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Wang Z, Guo J, Luo W, Niu S, Qu L, Li J, Chen Y, Li G, Yang H, Lu D. Salicylic Acid Cooperates With Lignin and Sucrose Signals to Alleviate Waxy Maize Leaf Senescence Under Heat Stress. PLANT, CELL & ENVIRONMENT 2025; 48:4341-4355. [PMID: 39969247 DOI: 10.1111/pce.15437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2024] [Accepted: 02/02/2025] [Indexed: 02/20/2025]
Abstract
Leaf senescence induced by high temperature (HT) has become a primary factor limiting maize yield, particularly during the filling stage. Exogenous salicylic acid (SA) has emerged as an effective strategy to mitigate leaf senescence and HT-induced damage, though its underlying mechanisms remain unclear. This study investigated the regulatory mechanism of SA application on waxy maize subjected to HT during the early filling stage. Compared to HT alone, exogenous SA alleviated the inhibition of photosynthesis and oxidative damage by enhancing the activities of enzymes involved in photosynthesis and antioxidant system and modulating phytohormone metabolism and signal transduction pathways, thereby reducing leaf senescence and mitigating yield loss under HT. Transcriptomic and metabolomic analyses showed that HT downregulated most genes involved in the starch and sucrose metabolism pathway in leaves but promoted soluble sugar accumulation, which represents a plant strategy to cope with HT. Conversely, exogenous SA reversed this change and further enhanced soluble sugar accumulation in leaves. SA also regulated sugar metabolism by inhibiting trehalose-6-phosphate synthesis and activating SnRK1 to resist HT. Furthermore, SA stimulated lignin biosynthesis through the phenylpropanoid pathway, ensuring cell membrane integrity under HT. The relationship between SA signalling and plant heat tolerance was validated using a maize SA synthesis-synthetic mutant.
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Affiliation(s)
- Zitao Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Jian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Wenxuan Luo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Shiduo Niu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Lingling Qu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Jing Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Yanping Chen
- Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Guanghao Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Huan Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Dalei Lu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research, Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, China
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Zhang Q, Yu X, Wang R, Wu Y, Shi F, Zhang Y, Zhao H, Xu H, Pan J, Wang Y, Tu M, Chang J, Zhu Z, He G, Chen M, Chen L, Yang G, Li Y. TaPP2C-a6 interacts with TaDOG1Ls and regulates seed dormancy and germination in wheat. PLANT BIOTECHNOLOGY JOURNAL 2025. [PMID: 40418648 DOI: 10.1111/pbi.70144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 07/22/2024] [Accepted: 05/10/2025] [Indexed: 05/28/2025]
Abstract
Modern wheat cultivation requires seed to germinate rapidly and uniformly with weak dormancy. However, such varieties tend to undergo pre-harvest sprouting (PHS) if the harvest overlaps with the rainy season, causing substantial yield losses. Knowledge regarding the mechanisms of seed dormancy in wheat (Triticum aestivum L.) is limited, with only a few causal genes of the many PHS quantitative trait loci (QTLs) characterized. Here, we emphasize the involvement of ABA signalling core components in regulating seed dormancy and germination in wheat. TaPP2C-a6 was identified as the likely causal gene of wheat PHS-QTLs QPhs.wsu-1A/1B and QPhs1D.1_nwafu loci. Both TaPP2C-a6 and TaPP2C-a7 were highly expressed at embryonic developmental stages and germinating seeds, whereas TaPP2C-a6 was up-regulated during embryo maturation and seed germination. TaPP2C-a6 and TaPP2C-a7 were clade-A PP2Cs that interacted with TaPYLs and class III TaSnRK2s; however, TaPP2C-a6 showed stronger interactions with TaDOG1L members than those of TaPP2C-a7. TaPP2C-a6 overexpression in transgenic Arabidopsis thaliana caused a more severe reduction in ABA sensitivity than TaPP2C-a7 overexpression. Overexpression of TaPP2C-a6 in transgenic A. thaliana and wheat increased PHS levels, whereas TaPP2C-a7 transgenic A. thaliana did not affect PHS levels, confirming that TaPP2C-a6 is a novel regulator of wheat seed dormancy and germination. In summary, we demonstrated that leveraging the knowledge of seed dormancy and germination from model species could rapidly identify the causal genes of PHS-QTLs in wheat. Significantly, we showed that the TaPP2C-TaDOG1L interactions, particularly the interaction strength, could be a new aspect in the regulation of seed dormancy and germination.
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Affiliation(s)
- Qian Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaofen Yu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
| | - Ruibin Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Ya'nan Wu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Fu Shi
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yufan Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyan Zhao
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Huazhen Xu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jiao Pan
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yuesheng Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Min Tu
- Hubei Technical Engineering Research Center for Chemical Utilization and Engineering Development of Agricultural and Byproduct Resources, School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Zhanwang Zhu
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Mingjie Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Chen
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yin Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
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Yang Z, Han X, Xing Z, He F, Qi T, Wang X, Fu R, Du C, Feng X, Wang Y, Yuan Q, Li F, Lan W, Xu Y. Combining transcriptomics and metabolomics to analyse the mechanism of allelopathy in Cyclachaena xanthiifolia. BMC PLANT BIOLOGY 2025; 25:660. [PMID: 40389813 PMCID: PMC12087043 DOI: 10.1186/s12870-025-06704-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2025] [Accepted: 05/12/2025] [Indexed: 05/21/2025]
Abstract
As a vicious invasive plant, Cyclachaena xanthiifolia has caused severe ecological disruption and significant reductions in crop yield, necessitating urgent control measures. However, the underlying mechanisms of its allelopathic invasion remain unclear, representing the primary bottleneck in current management strategies. In this study, we used metabolomic and transcriptomic analyses to evaluate the differences in allelopathy and related physiological and biochemical indices among different extract fractions of C.xanthiifolia, and to investigate how the allelopathy of C.xanthiifolia inhibits seed germination and seedling growth by altering metabolic pathways. GC-MS results identified several compounds with allelopathic potential, including fatty acids, terpenes, esters, alkanes, and aldehydes. Among them, n-butanol phase extract (NE) treatment significantly inhibited the germination and water absorption of mustard (Brassica juncea) seeds, changed the balance of the endogenous hormones abscisic acid (ABA) and gibberellins (GA) in seeds, destroyed the antioxidant enzyme system, and caused plasma membrane damage. Moreover, transcriptomic and broadly targeted metabolomic analyses showed that NE treatment interfered with primary metabolism, significantly enriched the carotenoid biosynthetic pathway, and led to a significant accumulation of ABA. The quantitative real-time PCR (qRT-PCR) results showed that the expression levels of 7 key genes involved in ABA biosynthesis and metabolic pathways were relatively high. The results showed that C.xanthiifolia may exert its allelopathic effects by disrupting the antioxidant enzyme system and interfering with primary metabolism and hormone signalling, and that the modulation of the ABA signalling pathway appears to play a key role.
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Affiliation(s)
- Zelin Yang
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaoling Han
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Zhixiang Xing
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Fumeng He
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Tianshuai Qi
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Xue Wang
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Rao Fu
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Chong Du
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Xu Feng
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Yingnan Wang
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Qiang Yuan
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China
| | - Fenglan Li
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China.
- Heilongjiang Academy of Green Food Science, Harbin, 150023, China.
| | - Wei Lan
- School of Biology and Food Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, P. R. China.
- Anhui Engineering Research Center for Functional Fruit Drink and Ecological Fermentation, Fuyang, Anhui, 236037, P. R. China.
| | - Yongqing Xu
- College of Life Sciences, Northeast Agricultural University, Harbin, 150030, China.
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Luo Y, Wang K, Yao Y, Nan L. Exogenous GA 3 Promotes Germination by Reducing Endogenous Inhibitors in Sainfoin ( Onobrychis viciifolia) Seeds. PLANTS (BASEL, SWITZERLAND) 2025; 14:1464. [PMID: 40431028 PMCID: PMC12114959 DOI: 10.3390/plants14101464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2025] [Revised: 05/03/2025] [Accepted: 05/12/2025] [Indexed: 05/29/2025]
Abstract
Endogenous inhibitors can inhibit seed germination, and GA3 can promote seed germination. Whether GA3 can affect the changes in endogenous inhibitors has not been clarified. In order to study the effect of GA3 on the endogenous inhibitors in sainfoin (Onobrychis viciifolia) seeds, the systematic separation method and gas chromatography-mass pectrometry (GC-MS) method were used to determine the endogenous inhibitors using cabbage (Brassica rapa var. glabra Regel) as a bioassay model to validate the inhibitory activity in sainfoin seeds, and then the optimal concentration of GA3 was determined to promote seed germination. The results showed that endogenous inhibitors existed in the pod coat, seed coat, and seed embryo of sainfoin seeds, with the methanol and ethyl acetate phases showing the highest degree of inhibition. The organic compounds were mainly organic acids, phenols, lipids, and alkanes. The levels of changes in germination indicators, storage substances, and antioxidant enzymes determined that 600 mg/L GA3 was the optimum concentration to promote germination of sainfoin seed. It was also found that 600 mg/L GA3 reduced the relative content of endogenous inhibitors and changed the content of endogenous hormones. In summary, the presence of endogenous inhibitors may be one of the reasons for the low germination rate of sainfoin seeds, with 3-methoxycatechol and 4-nitrosodiphenylamine playing a major role. GA3 can reduce the relative content and types of endogenous inhibitors to promote the germination of sainfoin seeds. Our experimental results provide the basis for subsequent exploration of the mechanism of specific endogenous inhibitors and the identification of deeper molecular mechanisms.
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Affiliation(s)
| | | | | | - Lili Nan
- Pratacultural College, Gansu Agricultural University, Yinmen Village, Anning District, Lanzhou 730070, China; (Y.L.); (K.W.); (Y.Y.)
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Zhang Q, Yu X, Wu Y, Wang R, Zhang Y, Shi F, Zhao H, Yu P, Wang Y, Chen M, Chang J, Li Y, He G, Yang G. TaPP2C-a5 fine-tunes wheat seed dormancy and germination with a Triticeae-specific, alternatively spliced transcript. J Adv Res 2025:S2090-1232(25)00300-5. [PMID: 40345647 DOI: 10.1016/j.jare.2025.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2025] [Revised: 04/29/2025] [Accepted: 05/05/2025] [Indexed: 05/11/2025] Open
Abstract
INTRODUCTION The sessile plants often experience environmental conditions not ideal for growth, and therefore have evolved strategies to survive and adapt to stress conditions. Abscisic acid (ABA) regulates plant development and abiotic stress response. Clade A type 2C protein phosphatases (PP2Cs), act as co-receptors of ABA, negatively regulate ABA signalling. However, the biological function and detailed molecular mechanism of clade A PP2Cs in ABA signalling pathway remain to be elucidated in wheat. OBJECTIVES To analyze the mechanisms of stress response and development mediated by ABA signal precisely regulated by TaPP2C-a5 at the post-transcriptional level in wheat, providing candidate genes for wheat improvement. METHODS Based on our previous results of TaPP2Cs gene family analysis, the function and detailed regulation mechanisms of TaPP2C-a5 gene in seed dormancy and germination as well as drought response mediated by ABA signaling pathway were explored through reverse genetics technology. RESULTS We found that class A TaPP2C-a5 underwent alternative splicing (AS) to produce two transcripts encoding TaPP2C-a5.1 and TaPP2C-a5.2, respectively. Both TaPP2C-a5.1 and TaPP2C-a5.2 were highly expressed in mature seeds, and were upregulated by exogenous ABA in seedlings. Overexpression of TaPP2C-a5.1 and TaPP2C-a5.2 coordinately negatively regulated seed dormancy and ABA-mediated seed germination as well as post-germination developmental arrest in wheat. TaPP2C-a5.1 negatively regulated drought stress response, while TaPP2C-a5.2 did not participate in drought stress response. The homologous genes of TaPP2C-a5 underwent the same AS as TaPP2C-a5 in tetraploid wheat, but not in rice. CONCLUSION Our results revealed that TaPP2C-a5 gene underwent AS and was involved in the regulation of seed dormancy and germination, as well as drought stress response mediated by the ABA signaling at the post-transcriptional level. Our work not only provide a potential target gene to improve PHS resistance, but also emphasize alternative splicing as a strategy with evolution contexts to fine-tune ABA signaling and its involvement in certain biological process.
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Affiliation(s)
- Qian Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaofen Yu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Ya'nan Wu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ruibin Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yufan Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Fu Shi
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hongyan Zhao
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Puju Yu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuesheng Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Mingjie Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yin Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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Meng X, Wang Y, Tang B, Zhou J, Gu Y, Shen Q, Zhou Y, Wang B, Fang H, Cao Y. A Comprehensive Analysis of the Alternative Splicing Co-Factor U2AF65B Gene Family Reveals Its Role in Stress Responses and Root Development. Int J Mol Sci 2025; 26:3901. [PMID: 40332802 PMCID: PMC12027700 DOI: 10.3390/ijms26083901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2025] [Revised: 04/14/2025] [Accepted: 04/18/2025] [Indexed: 05/08/2025] Open
Abstract
U2AF65, a 65 kDa splicing co-factor, promotes spliceosome assembly. Although its role in alternative splicing (AS) is known, the function of U2AF65B (the large subunit of U2AF65) remains unclear. Therefore, we systematically identified and analyzed the U2AF65B gene family across 36 plant species, revealing 103 putative members with conserved structures and functions. Phylogenetic analysis divided the genes into two clades and five subgroups, indicating evolutionary divergence. Gene structure and conserved motif analyses showed that most U2AF65B genes have complex structures and shared similar motifs. Homology modeling and amino acid conservation analyses revealed significant conservation in U2AF65B amino acid sequences, particularly in Groups D and E. Cis-acting element analysis indicated that U2AF65B genes respond to various stimuli, supported by expression analysis under different stress conditions. Subcellular localization predictions indicated that U2AF65B proteins primarily localize in the nucleus and the cytoplasm. Alternative splicing (AS) profile analysis showed that the AS frequency likely varies between species. Functional analysis of the AtU2AF65B mutant in Arabidopsis revealed that AtU2AF65B function loss enhances root elongation and attenuates ABA-dependent germination suppression, indicating negatively regulated seedling growth and development. These findings provide insights into the evolutionary history, molecular mechanisms, and functional roles of the U2AF65B gene family in plants.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Hui Fang
- College of Life Sciences, Nantong University, Nantong 226019, China; (X.M.); (Y.W.); (B.T.); (J.Z.); (Y.G.); (Q.S.); (Y.Z.); (B.W.)
| | - Yunying Cao
- College of Life Sciences, Nantong University, Nantong 226019, China; (X.M.); (Y.W.); (B.T.); (J.Z.); (Y.G.); (Q.S.); (Y.Z.); (B.W.)
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Wang K, Cheng J, Chen JR, Luo YY, Yao YH, Nan LL. Genome-wide identification of pyrabactin resistance 1-like (PYL) gene family under phytohormones and drought stresses in alfalfa (Medicago sativa). BMC Genomics 2025; 26:383. [PMID: 40251513 PMCID: PMC12007309 DOI: 10.1186/s12864-025-11575-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2025] [Accepted: 04/07/2025] [Indexed: 04/20/2025] Open
Abstract
BACKGROUND The Pyrabactin resistance 1-like proteins (PYR/PYL/RCAR) protein plays a critical regulatory role in the ABA signal transduction pathway as a direct receptor of abscisic acid (ABA). Although PYL genes have been identified in a variety of plants, the evolution and structural characteristics of these genes in alfalfa (Medicago sativa) are largely unknown. Therefore, a comprehensive bioinformatics analysis of the PYL gene family was performed in this research. RESULTS The results indicated that 41 MsPYL genes were unevenly distributed across 24 chromosomes. According to gene structure, conservative features, and phylogenetic relationships, MsPYL proteins can be divided into 6 groups, all of which have PYR/PYL/RCAR domains, and MsPYL proteins are relatively small (molecular weight 19.59 kDa to 25.31 kDa). MsPYL genes contains cis-acting elements that has functions in plant growth and development, hormone regulation, and stress response. Furthermore, transcriptome data showed that drought stress affected the MsPYL genes' expression levels in alfalfa. Tissue specificity analysis revealed that all MsPYL genes exhibited varying responses to drought, abscisic acid (ABA), salicylic acid (SA), and indole-3-acetic acid (IAA). Additionally, all MsPYL genes were expressed to different extents in both the aboveground and underground tissues following stimulation. They were induced by IAA, ABA, and SA from 6 h to 12 h, and ABA induced MsPYL4 most significantly at the 12 h mark. MsPYL4, MsPYL8, MsPYL11, and MsPYL19 were expressed only after hormone treatment. CONCLUSIONS The results of this study indicate that the MsPYL genes are closely related to stress response and provide new candidate genes for further exploration of MsPYL genes function and improvement and innovation of drought-resistant alfalfa germplasm.
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Affiliation(s)
- Kun Wang
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China
| | - Jiao Cheng
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China
| | - Jing-Ru Chen
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China
| | - Yan-Yan Luo
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China
| | - Yu-Heng Yao
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China
| | - Li-Li Nan
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou, 730070, China.
- Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs (Co-sponsored by the Ministry and Gansu Province), Lanzhou, 730070, China.
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8
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Luo Y, Wang K, Cheng J, Nan L. Transcriptome Analysis of Onobrychis viciifolia During Seed Germination Reveals GA 3-Inducible Genes Associated with Phenylpropanoid and Hormone Pathways. Int J Mol Sci 2025; 26:2335. [PMID: 40076954 PMCID: PMC11900539 DOI: 10.3390/ijms26052335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2025] [Revised: 03/03/2025] [Accepted: 03/03/2025] [Indexed: 03/14/2025] Open
Abstract
Sainfoin (Onobrychis viciifolia) is a type of leguminous plant with high feeding value. It contains a high concentration of tannins at all growth stages, which can precipitate soluble proteins and form a large number of persistent foams in the rumen, so that ruminant livestock will not develop dilatation disease during green feeding and grazing. The germination rate of O. viciifolia seeds is very low under natural conditions. The preliminary experiment showed that 600 mg/L GA3 treatment significantly improved the germination rate and seed vitality of sainfoin seeds. In comparison to CK, GA3 significantly decreased the relative content of endogenous inhibitors, with the most notable reduction observed in 4-nitroso-N-phenyl-benzenamine. Therefore, we selected the dry seed stage (GZ), imbibition stage (XZ), split stage (LK), and radicle emergence stage (MF) of four different germination stages treated with GA3 for transcriptome analysis. RNA-seq identified 1392, 2534 and 4284 differentially expressed genes (DEGs) in GZ vs. XZ, XZ vs. LK, and LK vs. MF, respectively. During seed germination, DEGs are mainly enriched in hormone signaling and phenylalanine biosynthesis pathways, and up-down-regulation of these DEGs may alter hormone and secondary metabolite levels to promote germination. The results of weighted gene co-expression network construction (WGCNA) also indicate that plant hormone signal transduction and phenylpropanoid biosynthesis play a dominant role in GA3-induced seed germination. In conclusion, the combined analysis of transcriptomic and physiological indicators provided new insights into seed germination and a theoretical basis for further study of candidate genes.
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Affiliation(s)
| | | | | | - Lili Nan
- Pratacultural College, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China; (Y.L.); (K.W.); (J.C.)
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9
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Zhu R, Peng L, Xu Y, Liu C, Shao L, Liu T, Shou M, Lin Q, Wang B, Shi M, Kai G. Abscisic acid enhances SmAPK1-mediated phosphorylation of SmbZIP4 to positively regulate tanshinone biosynthesis in Salvia miltiorrhiza. THE NEW PHYTOLOGIST 2025; 245:1124-1144. [PMID: 39562534 DOI: 10.1111/nph.20274] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2024] [Accepted: 10/24/2024] [Indexed: 11/21/2024]
Abstract
Tanshinones, isolated from Salvia miltiorrhiza, is efficient to treat cardiovascular and cerebrovascular diseases. Abscisic acid (ABA) treatment is found to promote tanshinone biosynthesis; however, the underlying mechanism has not been fully elucidated. A protein kinase namely SmAPK1 was identified as an important positive regulator of ABA-induced tanshinone accumulation in S. miltiorrhiza. Using SmAPK1 as bait, a basic region leucine zipper (bZIP) family transcription factor SmbZIP4 was screened from the cDNA library. Functional identification reveals that SmbZIP4 negatively regulates tanshinone biosynthesis in hairy roots and transgenic plants through directly targeting SmGGPPS and SmCYP76AK1. SmAPK1 phosphorylates the Ser97 and Thr99 site of SmbZIP4, leading to its degradation via the 26S proteasome pathway, which is promoted by ABA-induced enhancement of SmAPK1 kinase activity. Degradation of SmbZIP4 upregulates the expression levels of SmGGPPS and SmCYP76AK1, resulting in increased tanshinone content. Taken together, our results reveal new molecular mechanism by which SmAPK1-SmbZIP4 module plays a crucial role in ABA-induced tanshinone accumulation. This study sheds new insights in the biosynthesis of bioactive compounds in medicinal plants.
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Affiliation(s)
- Ruiyan Zhu
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Lulu Peng
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Ying Xu
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Changle Liu
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Lili Shao
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Tingyao Liu
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Minyu Shou
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Qinzhe Lin
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Biao Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China
| | - Min Shi
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Guoyin Kai
- Laboratory of Medicinal Plant Biotechnology, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
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10
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Li X, Zhuang Y, Zhao W, Qu X, Wang J, Chang M, Shen J, Chen N, Huang S. Molecular and functional adaption of Arabidopsis villins. THE NEW PHYTOLOGIST 2025; 245:1158-1179. [PMID: 39574358 DOI: 10.1111/nph.20295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2024] [Accepted: 11/06/2024] [Indexed: 01/11/2025]
Abstract
Villins are versatile, multifunctional actin regulatory proteins. They promote actin stabilization and remodeling mainly via their actin bundling and Ca2+-dependent severing activities, respectively. Arabidopsis subclass II and III villins normally coexist in cells, but the biological significance of their coexistence remains unknown. Here we demonstrate that subclass II villin binds to Ca2+ with high affinity and exhibits strong severing but weak bundling activity compared to subclass III villin. Subclass II villin plays a dominant role in promoting actin remodeling, which requires its Ca2+-dependent severing activity. Subclass II villin is also strictly required for physiological processes including oriented organ growth and stress tolerance. By comparison, subclass III villin binds to Ca2+ with low affinity and exhibits weak severing but strong bundling activity, and acts as the major player in controlling actin stabilization and organization. Thus, we demonstrate that multifunctional villin isovariants have diverged biochemically to ensure exquisite control of the actin cytoskeleton to meet different cellular needs in plants. This study provides new insights into the role of villins in fine-tuning actin dynamics and plant development.
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Affiliation(s)
- Xin Li
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yuhui Zhuang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Wanying Zhao
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Xiaolu Qu
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070, Wuhan, China
| | - Juan Wang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Ming Chang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Jiangfeng Shen
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Naizhi Chen
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Shanjin Huang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
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11
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Fan X, Gao F, Liu Y, Huang W, Yang Y, Luo Z, Zhang J, Qi F, Lv J, Su X, Wang L, Song S, Ren G, Xing Y. The transcription factor CCT30 promotes rice preharvest sprouting by regulating sugar signalling to inhibit the ABA-mediated pathway. PLANT BIOTECHNOLOGY JOURNAL 2025; 23:579-591. [PMID: 39622700 PMCID: PMC11772322 DOI: 10.1111/pbi.14521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 10/28/2024] [Accepted: 11/06/2024] [Indexed: 01/29/2025]
Abstract
Seed dormancy is an important adaptive trait in plants. Proper seed dormancy enables the avoidance of preharvest sprouting in the undesirable conditions like rainfall frequently. In this study, qPSR8, a major QTL for preharvest sprouting, was isolated, and a previously reported heading-date gene, CCT30, was verified as the candidate gene. The CCT30 knockout mutants (CCT30-CR) enhanced seed dormancy and ABA sensitivity as compared with the wild-type ZH11. Conversely, CCT30 overexpressing plants had opposite phenotype changes and had a decreased ABA content. The expression of ABA synthesis genes such as OsNCEDs and ABA signalling genes such as ABI3 and ABI5 were upregulated and sugar metabolism-related genes such as amylase genes were downregulated in CCT30-CR. Correspondingly, fewer free sugars, such as monosaccharides and oligosaccharides, accumulated in CCT30-CR. The freshly harvested seeds from CCT30-CR had no ability to transmit sugar signals when treated with 1% exogenous glucose. In addition, CCT30 interacted with the transcription factor OsbZIP37, which negatively regulates seed dormancy. Overall, CCT30 promotes preharvest sprouting by enhancing sugar signals that inhibit the ABA-mediated pathway, and CCT30 is a good gene for breeding rice varieties resistant to preharvest sprouting.
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Affiliation(s)
- Xiaowei Fan
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Fangyuan Gao
- Environment‐Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research InstituteSichuan Academy of Agricultural SciencesChengduChina
| | - Yuexin Liu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Wen Huang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Ying Yang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Zhengliang Luo
- Environment‐Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research InstituteSichuan Academy of Agricultural SciencesChengduChina
| | - Jia Zhang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Feixiang Qi
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Jianqun Lv
- Environment‐Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research InstituteSichuan Academy of Agricultural SciencesChengduChina
| | - Xiangwen Su
- Environment‐Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research InstituteSichuan Academy of Agricultural SciencesChengduChina
| | - Lei Wang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Song Song
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
- Henan Agricultural UniversityZhengzhouChina
| | - Guangjun Ren
- Environment‐Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research InstituteSichuan Academy of Agricultural SciencesChengduChina
| | - Yongzhong Xing
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
- Yazhouwan National LaboratorySanyaChina
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12
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Hao CH, Pang C, Yang LN, Xiong F, Li S. Myosin-binding protein 13 mediates primary seed dormancy via abscisic acid biosynthesis and signaling in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 120:2193-2206. [PMID: 39476328 DOI: 10.1111/tpj.17112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2024] [Revised: 10/02/2024] [Accepted: 10/14/2024] [Indexed: 12/11/2024]
Abstract
Dormancy is an essential characteristic that enables seeds to survive in unfavorable conditions while germinating when conditions are favorable. Myosin-binding proteins (MyoBs) assist in the movement of organelles along actin microfilaments by attaching to both organelles and myosins. In contrast to studies on yeast and metazoans, research on plant MyoBs is still in its early stages and primarily focuses on tip-growing cells. In this study, we found that Arabidopsis MyoB13 is highly expressed in dry mature seeds. The myob13 mutant, created using CRISPR/Cas9, exhibits a preharvest sprouting phenotype, which can be mitigated by after-ripening treatment, indicating that MyoB13 plays a positive role in primary seed dormancy. Furthermore, we show that MyoB13 negatively regulates ABA biosynthesis and signaling pathways. Notably, the expression of MyoB13 orthologs from maize and soybean can completely restore the phenotype of the Arabidopsis myob13 mutant, suggesting that the function of MyoB13 in ABA-induced seed dormancy is evolutionarily conserved. Therefore, the functional characterization of MyoB13 offers an additional genetic resource to help prevent vivipary in crop species.
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Affiliation(s)
- Cui-Hong Hao
- Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Chen Pang
- State Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Li-Na Yang
- State Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Feng Xiong
- State Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Sha Li
- State Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
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13
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Wang G, Xu Y, Guan SL, Zhang J, Jia Z, Hu L, Zhai M, Mo Z, Xuan J. Comprehensive genomic analysis of CiPawPYL-PP2C-SnRK family genes in pecan (Carya illinoinensis) and functional characterization of CiPawSnRK2.1 under salt stress responses. Int J Biol Macromol 2024; 279:135366. [PMID: 39244129 DOI: 10.1016/j.ijbiomac.2024.135366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 09/04/2024] [Accepted: 09/04/2024] [Indexed: 09/09/2024]
Abstract
Abscisic acid (ABA) is a pivotal regulator of plant growth, development, and responses to environmental stresses. The ABA signaling pathway involves three key components: ABA receptors known as PYLs, PP2Cs, and SnRK2s, which are conserved across higher plants. This study comprehensively investigated the PYL-PP2C-SnRK gene family in pecan, identifying 14 PYL genes, 97 PP2C genes, and 44 SnRK genes, which were categorized into subgroups through phylogenetic and sequence structure analysis. Whole-genome duplication (WGD) and dispersed duplication (DSD) were identified as major drivers of family expansion, and purifying selection was the primary evolutionary force. Tissue-specific expression analysis suggested diverse functions in different pecan tissues. qRT-PCR validation confirmed the involvement of CiPawPYLs, CiPawPP2CAs, and CiPawSnRK2s in salt stress response. Subcellular localization analysis revealed CiPawPP2C1 in the nucleus and CiPawPYL1 and CiPawSnRK2.1 in both the nucleus and the plasma membrane. In addition, VIGS indicated that CiPawSnRK2.1-silenced pecan seedling leaves display significantly reduced salt tolerance. Y2H and LCI assays verified that CiPawPP2C3 can interact with CiPawPYL5, CiPawPYL8, and CiPawSnRK2.1. This study characterizes the role of CiPawSnRK2.1 in salt stress and lays the groundwork for exploring the CiPawPYL-PP2C-SnRK module, highlighting the need to investigate the roles of other components in the pecan ABA signaling pathway.
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Affiliation(s)
- Guoming Wang
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Ying Xu
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Sophia Lee Guan
- College of Computer, Mathematical, and Natural Sciences, University of Maryland, College Park, MD 20742, United States
| | - Jiyu Zhang
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Zhanhui Jia
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Longjiao Hu
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Min Zhai
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Zhenghai Mo
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
| | - Jiping Xuan
- Jiangsu Engineering Research Center for Germplasm Innovation and Utilization of Pecan, Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
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14
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Wang ZZ, Cao MJ, Yan J, Dong J, Chen MX, Yang JF, Li JH, Ying RN, Gao YY, Li L, Leng YN, Tian Y, Hewage KAH, Pei RJ, Huang ZY, Yin P, Zhu JK, Hao GF, Yang GF. Stabilization of dimeric PYR/PYL/RCAR family members relieves abscisic acid-induced inhibition of seed germination. Nat Commun 2024; 15:8077. [PMID: 39277642 PMCID: PMC11401921 DOI: 10.1038/s41467-024-52426-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 09/04/2024] [Indexed: 09/17/2024] Open
Abstract
Abscisic acid (ABA) is the primary preventing factor of seed germination, which is crucial to plant survival and propagation. ABA-induced seed germination inhibition is mainly mediated by the dimeric PYR/PYL/RCAR (PYLs) family members. However, little is known about the relevance between dimeric stability of PYLs and seed germination. Here, we reveal that stabilization of PYL dimer can relieve ABA-induced inhibition of seed germination using chemical genetic approaches. Di-nitrobensulfamide (DBSA), a computationally designed chemical probe, yields around ten-fold improvement in receptor affinity relative to ABA. DBSA reverses ABA-induced inhibition of seed germination mainly through dimeric receptors and recovers the expression of ABA-responsive genes. DBSA maintains PYR1 in dimeric state during protein oligomeric state experiment. X-ray crystallography shows that DBSA targets a pocket in PYL dimer interface and may stabilize PYL dimer by forming hydrogen networks. Our results illustrate the potential of PYL dimer stabilization in preventing ABA-induced seed germination inhibition.
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Affiliation(s)
- Zhi-Zheng Wang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Min-Jie Cao
- Institute of Advanced Biotechnology and School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Junjie Yan
- State Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jin Dong
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Mo-Xian Chen
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Jing-Fang Yang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Jian-Hong Li
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Rui-Ning Ying
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Yang-Yang Gao
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Li Li
- State Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ya-Nan Leng
- State Key Laboratory of Tree Genetics and Breeding, the Southern Modern Forestry Collaborative Innovation Center, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Life Sciences, Nanjing Forestry University, Nanjing, 210037, China
| | - Yuan Tian
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Kamalani Achala H Hewage
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Rong-Jie Pei
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Zhi-You Huang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China
| | - Ping Yin
- State Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jian-Kang Zhu
- Institute of Advanced Biotechnology and School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Ge-Fei Hao
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China.
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China.
| | - Guang-Fu Yang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, 430079, China.
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15
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Du SX, Wang LL, Yu WP, Xu SX, Chen L, Huang W. Appropriate induction of TOC1 ensures optimal MYB44 expression in ABA signaling and stress response in Arabidopsis. PLANT, CELL & ENVIRONMENT 2024; 47:3046-3062. [PMID: 38654596 DOI: 10.1111/pce.14922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/19/2024] [Accepted: 04/09/2024] [Indexed: 04/26/2024]
Abstract
Plants possess the remarkable ability to integrate the circadian clock with various signalling pathways, enabling them to quickly detect and react to both external and internal stress signals. However, the interplay between the circadian clock and biological processes in orchestrating responses to environmental stresses remains poorly understood. TOC1, a core component of the plant circadian clock, plays a vital role in maintaining circadian rhythmicity and participating in plant defences. Here, our study reveals a direct interaction between TOC1 and the promoter region of MYB44, a key gene involved in plant defence. TOC1 rhythmically represses MYB44 expression, thereby ensuring elevated MYB44 expression at dawn to help the plant in coping with lowest temperatures during diurnal cycles. Additionally, both TOC1 and MYB44 can be induced by cold stress in an Abscisic acid (ABA)-dependent and independent manner. TOC1 demonstrates a rapid induction in response to lower temperatures compared to ABA treatment, suggesting timely flexible regulation of TOC1-MYB44 regulatory module by the circadian clock in ensuring a proper response to diverse stresses and maintaining a balance between normal physiological processes and energy-consuming stress responses. Our study elucidates the role of TOC1 in effectively modulating expression of MYB44, providing insights into the regulatory network connecting the circadian clock, ABA signalling, and stress-responsive genes.
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Affiliation(s)
- Shen-Xiu Du
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
| | - Lu-Lu Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
| | - Wei-Peng Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
| | - Shu-Xuan Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
| | - Liang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
| | - Wei Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China
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16
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Díez AR, Szakonyi D, Lozano-Juste J, Duque P. Alternative splicing as a driver of natural variation in abscisic acid response. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:9-27. [PMID: 38659400 DOI: 10.1111/tpj.16773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/26/2024]
Abstract
Abscisic acid (ABA) is a crucial player in plant responses to the environment. It accumulates under stress, activating downstream signaling to implement molecular responses that restore homeostasis. Natural variance in ABA sensitivity remains barely understood, and the ABA pathway has been mainly studied at the transcriptional level, despite evidence that posttranscriptional regulation, namely, via alternative splicing, contributes to plant stress tolerance. Here, we identified the Arabidopsis accession Kn-0 as less sensitive to ABA than the reference Col-0, as shown by reduced effects of the hormone on seedling establishment, root branching, and stomatal closure, as well as by decreased induction of ABA marker genes. An in-depth comparative transcriptome analysis of the ABA response in the two variants revealed lower expression changes and fewer genes affected for the least ABA-sensitive ecotype. Notably, Kn-0 exhibited reduced levels of the ABA-signaling SnRK2 protein kinases and lower basal expression of ABA-reactivation genes, consistent with our finding that Kn-0 contains less endogenous ABA than Col-0. ABA also markedly affected alternative splicing, primarily intron retention, with Kn-0 being less responsive regarding both the number and magnitude of alternative splicing events, particularly exon skipping. We find that alternative splicing introduces a more ecotype-specific layer of ABA regulation and identify ABA-responsive splicing changes in key ABA pathway regulators that provide a functional and mechanistic link to the differential sensitivity of the two ecotypes. Our results offer new insight into the natural variation of ABA responses and corroborate a key role for alternative splicing in implementing ABA-mediated stress responses.
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Affiliation(s)
- Alba R Díez
- Instituto Gulbenkian de Ciência, 2780-156, Oeiras, Portugal
| | - Dóra Szakonyi
- Instituto Gulbenkian de Ciência, 2780-156, Oeiras, Portugal
| | - Jorge Lozano-Juste
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universitat Politècnica de València (UPV), Consejo Superior de Investigaciones Científicas (CSIC), 46022, Valencia, Spain
| | - Paula Duque
- Instituto Gulbenkian de Ciência, 2780-156, Oeiras, Portugal
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Gao X, Wu W, Yu L, Wu Y, Hong Y, Yuan X, Ming Q, Shen Z, Qin L, Zhu B. Transcriptome Analysis Reveals the Biocontrol Mechanism of Endophytic Bacterium AM201, Rhodococcus sp., against Root Rot Disease of Atractylodes macrocephala. Curr Microbiol 2024; 81:218. [PMID: 38856763 DOI: 10.1007/s00284-024-03742-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/14/2024] [Indexed: 06/11/2024]
Abstract
Atractylodes macrocephala Koidz (AMK) is a perennial herb from the plant family Asteraceae (formerly Compositae). This herb is mainly distributed in mountainous wetlands in Zhejiang, Sichuan, Yunnan, and Hunan provinces of China. Its medicinal production and quality, however, are severely impacted by root rot disease. In our previous study, endophytic bacterium designated AM201 exerted a high biocontrol effect on the root rot disease of AMK. However, the molecular mechanisms underlying this effect remain unclear. In this study, the identity of strain AM201 as Rhodococcus sp. was determined through analysis of its morphology, physiological and biochemical characteristics, as well as 16S rDNA sequencing. Subsequently, we performed transcriptome sequencing and bioinformatics analysis to compare and analyze the transcriptome profiles of root tissues from two groups: AM201 (AMK seedlings inoculated with Fusarium solani [FS] and AM201) and FS (AMK seedlings inoculated with FS alone). We also conducted morphological, physiological, biochemical, and molecular identification analyses for the AM201 strain. We obtained 1,560 differentially expressed genes, including 187 upregulated genes and 1,373 downregulated genes. We screened six key genes (GOLS2, CIPK25, ABI2, egID, PG1, and pgxB) involved in the resistance of AM201 against AMK root rot disease. These genes play a critical role in reactive oxygen species (ROS) clearance, Ca2+ signal transduction, abscisic acid signal inhibition, plant root growth, and plant cell wall defense. The strain AM201 was identified as Rhodococcus sp. based on its morphological characteristics, physiological and biochemical properties, and 16S rDNA sequencing results. The findings of this study could enable to prevent and control root rot disease in AMK and could offer theoretical guidance for the agricultural production of other medicinal herbs.
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Affiliation(s)
- Xiaoqi Gao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Wei Wu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
- Department of Pharmacy, Tiantai Hospital of Traditional Chinese Medicine, Taizhou, 317200, China
| | - Le Yu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yutong Wu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yueqing Hong
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xiaofeng Yuan
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Qianliang Ming
- School of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Zhanyun Shen
- School of Traditional Chinese Medicine, Zhejiang Pharmaceutical University, Ningbo, 315500, China
| | - Luping Qin
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Bo Zhu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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18
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Wu H, Wan X, Niu J, Cao Y, Wang S, Zhang Y, Guo Y, Xu H, Xue X, Yao J, Zhu C, Li Y, Li Q, Lu T, Yu H, Jiang W. Enhancing iron content and growth of cucumber seedlings with MgFe-LDHs under low-temperature stress. J Nanobiotechnology 2024; 22:268. [PMID: 38764056 PMCID: PMC11103931 DOI: 10.1186/s12951-024-02545-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 05/10/2024] [Indexed: 05/21/2024] Open
Abstract
The development of cost-effective and eco-friendly fertilizers is crucial for enhancing iron (Fe) uptake in crops and can help alleviate dietary Fe deficiencies, especially in populations with limited access to meat. This study focused on the application of MgFe-layered double hydroxide nanoparticles (MgFe-LDHs) as a potential solution. We successfully synthesized and characterized MgFe-LDHs and observed that 1-10 mg/L MgFe-LDHs improved cucumber seed germination and water uptake. Notably, the application of 10 mg/L MgFe-LDHs to roots significantly increased the seedling emergence rate and growth under low-temperature stress. The application of 10 mg/L MgFe-LDHs during sowing increased the root length, lateral root number, root fresh weight, aboveground fresh weight, and hypocotyl length under low-temperature stress. A comprehensive analysis integrating plant physiology, nutrition, and transcriptomics suggested that MgFe-LDHs improve cold tolerance by upregulating SA to stimulate CsFAD3 expression, elevating GA3 levels for enhanced nitrogen metabolism and protein synthesis, and reducing levels of ABA and JA to support seedling emergence rate and growth, along with increasing the expression and activity of peroxidase genes. SEM and FTIR further confirmed the adsorption of MgFe-LDHs onto the root hairs in the mature zone of the root apex. Remarkably, MgFe-LDHs application led to a 46% increase (p < 0.05) in the Fe content within cucumber seedlings, a phenomenon not observed with comparable iron salt solutions, suggesting that the nanocrystalline nature of MgFe-LDHs enhances their absorption efficiency in plants. Additionally, MgFe-LDHs significantly increased the nitrogen (N) content of the seedlings by 12% (p < 0.05), promoting nitrogen fixation in the cucumber seedlings. These results pave the way for the development and use of LDH-based Fe fertilizers.
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Affiliation(s)
- Hongyang Wu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Xiaoyang Wan
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jiefei Niu
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München, Neuherberg, 85764, Germany
- Faculty of Medicine, Ludwig- Maximilians-University München, Munich, 81377, Germany
| | - Yidan Cao
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shufang Wang
- Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yu Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yayu Guo
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Huimin Xu
- College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xian Xue
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, China
| | - Jun Yao
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou, 510520, China
| | - Cuifang Zhu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yang Li
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qiang Li
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tao Lu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongjun Yu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Weijie Jiang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- College of Horticulture, Xinjiang Agricultural University, Urumqi, 830052, China.
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19
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Gao Y, Qu D, Zhou M, Tang R, Ye J, Li X, Wang Y. Rhizobial-induced phosphatase GmPP2C61A positively regulates soybean nodulation. PHYSIOLOGIA PLANTARUM 2024; 176:e14341. [PMID: 38741264 DOI: 10.1111/ppl.14341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/16/2024]
Abstract
Symbiotic nitrogen fixation (SNF) is crucial for legumes, providing them with the nitrogen necessary for plant growth and development. Nodulation is the first step in the establishment of SNF. However, the determinant genes in soybean nodulation and the understanding of the underlying molecular mechanisms governing nodulation are still limited. Herein, we identified a phosphatase, GmPP2C61A, which was specifically induced by rhizobia inoculation. Using transgenic hairy roots harboring GmPP2C61A::GUS, we showed that GmPP2C61A was mainly induced in epidermal cells following rhizobia inoculation. Functional analysis revealed that knockdown or knock-out of GmPP2C61A significantly reduced the number of nodules, while overexpression of GmPP2C61A promoted nodule formation. Additionally, GmPP2C61A protein was mainly localized in the cytoplasm and exhibited conserved phosphatase activity in vitro. Our findings suggest that phosphatase GmPP2C61A serves as a critical regulator in soybean nodulation, highlighting its potential significance in enhancing symbiotic nitrogen fixation.
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Affiliation(s)
- Yongkang Gao
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Dejie Qu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Miaomiao Zhou
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Ruiheng Tang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Junjie Ye
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Xia Li
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
| | - Youning Wang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, P.R. China
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Agronomy, Northwest A&F University Yangling, Shaanxi Province, P.R. China
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20
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Chen D, Xu Y, Li J, Shiba H, Ezura H, Wang N. ERECTA Modulates Seed Germination and Fruit Development via Auxin Signaling in Tomato. Int J Mol Sci 2024; 25:4754. [PMID: 38731974 PMCID: PMC11084166 DOI: 10.3390/ijms25094754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Tomato (Solanum lycopersicum) breeding for improved fruit quality emphasizes selecting for desirable taste and characteristics, as well as enhancing disease resistance and yield. Seed germination is the initial step in the plant life cycle and directly affects crop productivity and yield. ERECTA (ER) is a receptor-like kinase (RLK) family protein known for its involvement in diverse developmental processes. We characterized a Micro-Tom EMS mutant designated as a knock-out mutant of sler. Our research reveals that SlER plays a central role in controlling critical traits such as inflorescence development, seed number, and seed germination. The elevation in auxin levels and alterations in the expression of ABSCISIC ACID INSENSITIVE 3 (ABI3) and ABI5 in sler seeds compared to the WT indicate that SlER modulates seed germination via auxin and abscisic acid (ABA) signaling. Additionally, we detected an increase in auxin content in the sler ovary and changes in the expression of auxin synthesis genes YUCCA flavin monooxygenases 1 (YUC1), YUC4, YUC5, and YUC6 as well as auxin response genes AUXIN RESPONSE FACTOR 5 (ARF5) and ARF7, suggesting that SlER regulates fruit development via auxin signaling.
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Affiliation(s)
- Daoyun Chen
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
| | - Yuqing Xu
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
| | - Jiawei Li
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
| | - Hiroshi Shiba
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan
| | - Hiroshi Ezura
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan
| | - Ning Wang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan; (D.C.); (Y.X.); (J.L.); (H.S.); (H.E.)
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba 305-8572, Ibaraki, Japan
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21
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Jia J, Luo Y, Wu Z, Ji Y, Liu S, Shu J, Chen B, Liu J. OsJMJ718, a histone demethylase gene, positively regulates seed germination in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:191-202. [PMID: 38116956 DOI: 10.1111/tpj.16600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 11/27/2023] [Accepted: 12/09/2023] [Indexed: 12/21/2023]
Abstract
Seed vigor has major impact on the rate and uniformity of seedling growth, crop yield, and quality. However, the epigenetic regulatory mechanism of crop seed vigor remains unclear. In this study, a (jumonji C) JmjC gene of the histone lysine demethylase OsJMJ718 was cloned in rice, and its roles in seed germination and its epigenetic regulation mechanism were investigated. OsJMJ718 was located in the nucleus and was engaged in H3K9 methylation. Histochemical GUS staining analysis revealed OsJMJ718 was highly expressed in seed embryos. Abiotic stress strongly induced the OsJMJ718 transcriptional accumulation level. Germination percentage and seedling vigor index of OsJMJ718 knockout lines (OsJMJ718-CR) were lower than those of the wild type (WT). Chromatin immunoprecipitation followed by sequencing (ChIP-seq) of seeds imbibed for 24 h showed an increase in H3K9me3 deposition of thousands of genes in OsJMJ718-CR. ChIP-seq results and transcriptome analysis showed that differentially expressed genes were enriched in ABA and ethylene signal transduction pathways. The content of ABA in OsJMJ718-CR was higher than that in WT seeds. OsJMJ718 overexpression enhanced sensitivity to ABA during germination and early seedling growth. In the seed imbibition stage, ABA and ethylene content diminished and augmented, separately, suggesting that OsJMJ718 may adjust rice seed germination through the ABA and ethylene signal transduction pathways. This study displayed the important function of OsJMJ718 in adjusting rice seed germination and vigor, which will provide an essential reference for practical issues, such as improving rice vigor and promoting direct rice sowing production.
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Affiliation(s)
- Junting Jia
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Yongjian Luo
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Zhiyuan Wu
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Yufang Ji
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Shuangxing Liu
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Jie Shu
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Bingxian Chen
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Jun Liu
- Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
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22
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Wang J, Mao L, Li Y, Lu K, Qu C, Tang Z, Li J, Liu L. Natural variation in BnaA9.NF-YA7 contributes to drought tolerance in Brassica napus L. Nat Commun 2024; 15:2082. [PMID: 38453909 PMCID: PMC10920887 DOI: 10.1038/s41467-024-46271-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/21/2024] [Indexed: 03/09/2024] Open
Abstract
Rapeseed (Brassica napus) is one of the important oil crops worldwide. Its production is often threatened by drought stress. Here, we identify a transcription factor (BnaA9.NF-YA7) that negatively regulates drought tolerance through genome-wide association study in B. napus. The presence of two SNPs within a CCAAT cis element leads to downregulation of BnaA9.NF-YA7 expression. In addition, the M63I (G-to-C) substitution in the transactivation domain can activate low level expression of BnaA4.DOR, which is an inhibitory factor of ABA-induced stomatal closure. Furthermore, we determine that Bna.ABF3/4s directly regulate the expression of BnaA9.NF-YA7, and BnaA9.NF-YA7 indirectly suppresses the expression of Bna.ABF3/4s by regulation of Bna.ASHH4s. Our findings uncover that BnaA9.NF-YA7 serves as a supplementary role for ABA signal balance under drought stress conditions, and provide a potential molecular target to breed drought-tolerant B. napus cultivars.
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Affiliation(s)
- Jia Wang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Lin Mao
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Yangyang Li
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Kun Lu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Cunmin Qu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Zhanglin Tang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Jiana Li
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China
| | - Liezhao Liu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China.
- Academy of Agricultural Science, Southwest University, Beibei, Chongqing, 400715, China.
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23
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Qiao Z, Deng F, Zeng H, Li X, Lu L, Lei Y, Li L, Chen Y, Chen J. MADS-Box Family Genes in Lagerstroemia indica and Their Involvement in Flower Development. PLANTS (BASEL, SWITZERLAND) 2024; 13:709. [PMID: 38475555 DOI: 10.3390/plants13050709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024]
Abstract
MADS-box is a key transcription factor regulating the transition to flowering and flower development. Lagerstroemia indica 'Xiang Yun' is a new cultivar of crape myrtle characterized by its non-fruiting nature. To study the molecular mechanism underlying the non-fruiting characteristics of 'Xiang Yun', 82 MADS-box genes were identified from the genome of L. indica. The physicochemical properties of these genes were examined using bioinformatics methods, and their expression as well as endogenous hormone levels at various stages of flower development were analyzed. The results showed that LiMADS genes were primarily classified into two types: type I and type II, with the majority being type II that contained an abundance of cis-acting elements in their promoters. By screening nine core proteins by predicted protein interactions and performing qRT-PCR analysis as well as in combination with transcriptome data, we found that the expression levels of most MADS genes involved in flower development were significantly lower in 'Xiang Yun' than in the wild type 'Hong Ye'. Hormonal analysis indicated that 'Xiang Yun' had higher levels of iP, IPR, TZR, and zeatin during its early stages of flower development than 'Hong Ye', whereas the MeJA content was substantially lower at the late stage of flower development of 'Hong Ye'. Finally, correlation analysis showed that JA, IAA, SA, and TZR were positively correlated with the expression levels of most type II genes. Based on these analyses, a working model for the non-fruiting 'Xiang Yun' was proposed. During the course of flower development, plant hormone response pathways may affect the expression of MADS genes, resulting in their low expression in flower development, which led to the abnormal development of the stamen and embryo sac and ultimately affected the fruiting process of 'Xiang Yun'.
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Affiliation(s)
- Zhongquan Qiao
- Hunan Provincial Key Laboratory of Forest Clonal Breeding, Hunan Academy of Forestry, Changsha 410004, China
| | - Fuyuan Deng
- Hunan Provincial Key Laboratory of Forest Clonal Breeding, Hunan Academy of Forestry, Changsha 410004, China
| | - Huijie Zeng
- Hunan Provincial Key Laboratory of Forest Clonal Breeding, Hunan Academy of Forestry, Changsha 410004, China
| | - Xuelu Li
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Liushu Lu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yuxing Lei
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lu Li
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yi Chen
- Hunan Provincial Key Laboratory of Forest Clonal Breeding, Hunan Academy of Forestry, Changsha 410004, China
| | - Jianjun Chen
- Mid-Florida Research and Education Center, Environmental Horticulture Department, University of Florida, 2725 S. Binion Road, Apopka, FL 32703, USA
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24
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Zhao H, Ma L, Shen J, Zhou H, Zheng Y. S-nitrosylation of the transcription factor MYB30 facilitates nitric oxide-promoted seed germination in Arabidopsis. THE PLANT CELL 2024; 36:367-382. [PMID: 37930821 PMCID: PMC10827312 DOI: 10.1093/plcell/koad276] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 08/28/2023] [Accepted: 10/04/2023] [Indexed: 11/08/2023]
Abstract
The gaseous signaling molecule nitric oxide (NO) plays an important role in breaking seed dormancy. NO induces a decrease in abscisic acid (ABA) content by transcriptionally activating its catabolic enzyme, the ABA 8'-hydroxylase CYP707A2. However, the underlying mechanism of this process remains unclear. Here, we report that the transcription factor MYB30 plays a critical role in NO-induced seed germination in Arabidopsis (Arabidopsis thaliana). MYB30 loss-of-function attenuates NO-mediated seed dormancy breaking. MYB30 triggers a NO-induced decrease in ABA content during germination by directly promoting CYP707A2 expression. NO induces S-nitrosylation at Cys-49 of MYB30 and enhances its transcriptional activity. Conversely, the ABA receptors PYRABACTIN RESISTANCE1 (PYR1)/PYR1-LIKE (PYL)/REGULATORY COMPONENTS OF ABA RECEPTORS (RCAR) interact with MYB30 and repress its transcriptional activity. ABA promotes the interaction between PYL4 and MYB30, whereas S-nitrosylation releases the PYL4-mediated inhibition of MYB30 by interfering with the PYL4-MYB30 interaction. Genetic analysis showed that MYB30 functions downstream of PYLs during seed dormancy and germination in response to NO. Furthermore, MYB30 mutation significantly represses the reduced dormancy phenotype and the enhanced CYP707A2 expression of the pyr1 pyl1 pyl2 pyl4 quadruple mutant. Our findings reveal that S-nitrosylation of MYB30 precisely regulates the balance of seed dormancy and germination, providing insights into the underlying mechanism of NO-promoted seed germination.
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Affiliation(s)
- Hongyun Zhao
- State Key Laboratory of Crop Stress Adaptation and Improvement, Key
Laboratory of Plant Stress Biology, School of Life Sciences, Henan
University, Kaifeng 475001, China
| | - Liang Ma
- State Key Laboratory of Plant Environmental Resilience, College of
Biological Sciences, China Agricultural University, Beijing
100193, China
| | - Jialu Shen
- State Key Laboratory of Crop Stress Adaptation and Improvement, Key
Laboratory of Plant Stress Biology, School of Life Sciences, Henan
University, Kaifeng 475001, China
| | - Huapeng Zhou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of
Education, College of Life Sciences, Sichuan University,
Chengdu 610064, China
| | - Yuan Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, Key
Laboratory of Plant Stress Biology, School of Life Sciences, Henan
University, Kaifeng 475001, China
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Fang J, Peng Y, Zheng L, He C, Peng S, Huang Y, Wang L, Liu H, Feng G. Chitosan-Se Engineered Nanomaterial Mitigates Salt Stress in Plants by Scavenging Reactive Oxygen Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:176-188. [PMID: 38127834 DOI: 10.1021/acs.jafc.3c06185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Soil salinity seriously hinders the sustainable development of green agriculture. The emergence of engineered nanomaterials has revolutionized agricultural research, providing a new means to overcome the limitations associated with current abiotic stress management and achieve highly productive agriculture. Herein, we synthesized a brand-new engineered nanomaterial (Cs-Se NMs) through the Schiff base reaction of oxidized chitosan with selenocystamine hydrochloride to alleviate salt stress in plants. After the addition of 300 mg/L Cs-Se NMs, the activity of superoxide dismutase, catalase, and peroxidase in rice shoots increased to 3.19, 1.79, and 1.85 times those observed in the NaCl group, respectively. Meanwhile, the MDA levels decreased by 63.9%. Notably, Cs-Se NMs also raised the transcription of genes correlated with the oxidative stress response and MAPK signaling in the transcriptomic analysis. In addition, Cs-Se NMs augmented the abundance and variety of rhizobacteria and remodeled the microbial community structure. These results provide insights into applying engineered nanomaterials in sustainable agriculture.
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Affiliation(s)
- Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Yuxin Peng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Lijuan Zheng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Chang He
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Shan Peng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Yuewen Huang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Lixiang Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Huipeng Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Guangfu Feng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
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Wang Y, Xu Y, Liao F, Li T, Li X, Wu B, Hong SB, Xu K, Zang Y, Zheng W. Genome-wide identification of GH9 gene family and the assessment of its role during fruit abscission zone formation in Vaccinium ashei. PLANT CELL REPORTS 2023; 42:1589-1609. [PMID: 37474780 DOI: 10.1007/s00299-023-03049-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023]
Abstract
KEY MESSAGE The genomic location and stage-specific expression pattern of GH9 genes reveal their critical roles during fruit abscission zone formation in Vaccinium ashei. Glycosyl hydrolase family 9 (GH9) cellulases play a crucial role in both cellulose synthesis and hydrolysis during plant growth and development. Despite this importance, there is currently no study on the involvement of GH9-encoding genes, specifically VaGH9s, in abscission zone formation of rabbiteye blueberries (Vaccinium ashei). In this study, we identified a total of 61 VaGH9s in the genome, which can be classified into 3 subclasses based on conserved motifs and domains, gene structures, and phylogenetic analyses. Our synteny analysis revealed that VaGH9s are more closely related to the GH9s of Populus L. than to those of Arabidopsis, Vitis vinifera, and Citrus sinensis. In silico structural analysis predicted that most of VaGH9s are hydrophilic, and localized in cell membrane and/or cell wall, and the variable sets of cis-acting regulatory elements and functional diversity with four categories of stress response, hormone regulation, growth and development, and transcription factor-related elements are present in the promoter sequence of VaGH9s genes. Transcriptomic analysis showed that there were 22 differentially expressed VaGH9s in fruit abscission zone tissue at the veraison stage, and the expression of VaGH9B2 and VaGH9C10 was continuously increased during fruit maturation, which were in parallel with the increasing levels of cellulase activity and oxidative stress indicators, suggesting that they are involved in the separation stage of fruit abscission in Vaccinium ashei. Our work identified 22 VaGH9s potentially involved in different stages of fruit abscission and would aid further investigation into the molecular regulation of abscission in rabbiteye blueberries fruit.
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Affiliation(s)
- Yingying Wang
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Yue Xu
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Fangfang Liao
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Ting Li
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Xiaolong Li
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Boping Wu
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Seung-Beom Hong
- Department of Biotechnology, University of Houston Clear Lake, Houston, TX, 77058-1098, USA
| | - Kai Xu
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Yunxiang Zang
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China
| | - Weiwei Zheng
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Wusu Road 666, Hangzhou, 311300, Zhejiang, China.
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27
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Peng M, Zhang S, Zhao K, Zheng Y, Li X. Plant Regulation Functions of Novel Phthalimide Compounds Based on AtPYL2. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12325-12332. [PMID: 37534830 DOI: 10.1021/acs.jafc.3c02809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Novel agents contain the structure of phthalimide, which has antibacterial, insecticidal, and herbicidal activities. Recently, studies reported that these compounds can bind to plant hormone receptors and play important regulatory roles. In this study, the functions of agents were studied with in vitro and in vivo assays. The abscisic acid (ABA) receptor pyrabactin resistant-like 2 (PYL2) protein in Arabidopsis thaliana was expressed, purified, and crystallized; the analysis results of the crystal structure showed three AtPYL2 subunits in each asymmetric unit. The affinity of compounds Z1-Z11 to the AtPYL2 protein was tested by microscale thermophoresis (MST) and then verified by isothermal titration calorimetry (ITC). Furthermore, the binding pockets were found using molecular docking to verify the target relationships. Relevant in vivo assays for seed germination and a root growth assay were conducted, with the plant samples being treated with target compounds. The results show that the compounds Z3, Z5, and Z10 target AtPYL2 and that the dissociation constants for binding by MST were 3.59, 3.54, and 3.97 μmol/L, respectively, among them, and the molecular docking results showed that compounds Z3, Z5, and Z10 formed hydrophobic interactions with amino acid residues through hydrogen or halogen bonding. This highlights their potential as an ABA receptor protein agonist. On the other hand, in vivo, compounds Z3, Z5, and Z10 had different inhibitory effects on seed germination, with compound Z5 inhibiting the root growth of A. thaliana and compound Z10 affecting root growth. In conclusion, these compounds could regulate plant growth and could be further developed as new plant-regulating agents.
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Affiliation(s)
- Mingyao Peng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
- College of Tea Science, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
| | - Shanqi Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
| | - Kunhong Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
| | - Yuguo Zheng
- Key Laboratory of Chemical Synthesis and Environmental Pollution Control Remediation Technology, Minzu Normal University of Xingyi, Xingyi, Guizhou 562400, People's Republic of China
| | - Xiangyang Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
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28
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Wang J, Li C, Li L, Gao L, Hu G, Zhang Y, Reynolds MP, Zhang X, Jia J, Mao X, Jing R. DIW1 encoding a clade I PP2C phosphatase negatively regulates drought tolerance by de-phosphorylating TaSnRK1.1 in wheat. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:1918-1936. [PMID: 37158049 DOI: 10.1111/jipb.13504] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/05/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023]
Abstract
Drought seriously impacts wheat production (Triticum aestivum L.), while the exploitation and utilization of genes for drought tolerance are insufficient. Leaf wilting is a direct reflection of drought tolerance in plants. Clade A PP2Cs are abscisic acid (ABA) co-receptors playing vital roles in the ABA signaling pathway, regulating drought response. However, the roles of other clade PP2Cs in drought tolerance, especially in wheat, remain largely unknown. Here, we identified a gain-of-function drought-induced wilting 1 (DIW1) gene from the wheat Aikang 58 mutant library by map-based cloning, which encodes a clade I protein phosphatase 2C (TaPP2C158) with enhanced protein phosphatase activity. Phenotypic analysis of overexpression and CRISPR/Cas9 mutant lines demonstrated that DIW1/TaPP2C158 is a negative regulator responsible for drought resistance. We found that TaPP2C158 directly interacts with TaSnRK1.1 and de-phosphorylates it, thus inactivating the TaSnRK1.1-TaAREB3 pathway. TaPP2C158 protein phosphatase activity is negatively correlated with ABA signaling. Association analysis suggested that C-terminal variation of TaPP2C158 changing protein phosphatase activity is highly correlated with the canopy temperature, and seedling survival rate under drought stress. Our data suggest that the favorable allele with lower phosphatase activity of TaPP2C158 has been positively selected in Chinese breeding history. This work benefits us in understanding the molecular mechanism of wheat drought tolerance, and provides elite genetic resources and molecular markers for improving wheat drought tolerance.
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Affiliation(s)
- Jingyi Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chaonan Li
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Long Li
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lifeng Gao
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ge Hu
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanfei Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Matthew P Reynolds
- International Maize and Wheat Improvement Center, Texcoco, 56237, Mexico
| | - Xueyong Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jizeng Jia
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xinguo Mao
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ruilian Jing
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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29
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Tuo D, Wu J, Zou J, Dong G, Zeng W, Li J, Du D. Analysis of Hormone Regulation on Seed Germination of Coix Based on Muli-Omics Analysis. PLANTS (BASEL, SWITZERLAND) 2023; 12:2700. [PMID: 37514314 PMCID: PMC10385750 DOI: 10.3390/plants12142700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/01/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023]
Abstract
Seed germination is an important stage of growth and reproduction and plays an important role in the life cycle of spermatophyte. It is co-determined by both genetic and environmental factors, and plant hormone regulation may be a highly conservative mechanism. Coix lachryrma-jobi (coix) is a grain with balanced nutrition for medicine and food and has substantial production value. It is an important part of agricultural production, and the efficiency of seed germination after sowing is a key link. In this study, coix species "small white shell Xingren" was used as the experimental material, and changes in gene expression levels and metabolite enrichment in seeds were identified by transcriptome and metabonomic analysis before and after seed germination. A total of 599 metabolites, including those from amino acid metabolism, sugar metabolism, and fatty acid metabolism, were significantly increased in germinating coix. Simultaneously, 10,929 differentially expressed genes (DEGs) were identified, and functional clusters of genes were also significantly clustered in hormone-signaling and glucose and fatty acid metabolism. In addition, this study found that a considerable number of hormone-signaling genes were significantly up-regulated during seed germination, activating multiple metabolic processes. The results of our conjoint analysis of multi omics showed that glucose and fatty acid metabolism played an important role in seed germination under hormone regulation.
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Affiliation(s)
- Donghao Tuo
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jiawen Wu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Juan Zou
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Guoqing Dong
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Wanyong Zeng
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jinhua Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Dengxiang Du
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
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30
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Bo C, Su C, Teng J, Sheng W, Xue T, Zhu Y, Xue J. Transcriptome Profiling Reveals Differential Gene Expression during the Process of Microtuber Formation in Pinellia ternata. Int J Mol Sci 2023; 24:11604. [PMID: 37511363 PMCID: PMC10380585 DOI: 10.3390/ijms241411604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Using petiole material as explants and directly inducing the formation of microtubers without going through the callus stage is an essential way to rapidly expand scarce medical plants such as Pinellia ternata. However, the early molecular mechanism underlying the formation of the microtuber is largely elusive. Here, we conducted cytology and dynamic transcriptome analyses of inchoate microtubers in Pinellia explants and identified 1092 differentially expressed genes after their cultivation in vitro for 0, 5, and 15 days. Compared with 0 day, the number and size of the microtuber cells were larger at 5 and 15 days of culture. Detailed categorization revealed that the differentially expressed genes were mainly related to responses to stimulus, biological regulation, organelles, membranes, transcription factor activity, and protein binding. Further analysis revealed that the microtuber at different incubation days exhibited quite a difference in both hormone signaling pathway transduction and the regulation pattern of transcription factors. Therefore, this study contributes to a better understanding of the early molecular regulation during the formation of the microtuber and provides new insights for the study of the rapid expansion of P. ternata and other medical plants.
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Affiliation(s)
- Chen Bo
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Chuandong Su
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Jingtong Teng
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Wei Sheng
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Tao Xue
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Yanfang Zhu
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Jianping Xue
- Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
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31
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Li J, Kong D, Song T, Hu Z, Li Q, Xiao B, Kessler F, Zhang Z, Xie G. OsFBN7-OsKAS I module promotes formation of plastoglobules clusters in rice chloroplasts. THE NEW PHYTOLOGIST 2023. [PMID: 37366020 DOI: 10.1111/nph.19081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 05/29/2023] [Indexed: 06/28/2023]
Abstract
Plastoglobules (PGs) contiguous with the outer leaflets of thylakoid membranes regulate lipid metabolism, plastid developmental transitions, and responses to environmental stimuli. However, the function of OsFBN7, a PG-core fibrillin gene in rice, has not been elucidated. Using molecular genetics and physiobiochemical approaches, we observed that OsFBN7 overexpression promoted PG clustering in rice chloroplasts. OsFBN7 interacted with two KAS I enzymes, namely OsKAS Ia and OsKAS Ib, in rice chloroplasts. Lipidomic analysis of chloroplast subcompartments, including PGs in the OsFBN7 overexpression lines, confirmed that levels of diacylglycerol (DAG), a chloroplast lipid precursor and monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG), the main chloroplast membrane lipids, were increased in PGs and chloroplasts. Furthermore, OsFBN7 enhanced the abundances of OsKAS Ia/Ib in planta and their stability under oxidative and heat stresses. In addition, RNA sequencing and real-time quantitative reverse-transcription polymerase chain reaction (qRT-PCR) analyses showed that the expression of the DAG synthetase gene PAP1 and MGDG synthase gene MDG2 was upregulated by OsFBN7. In conclusion, this study proposes a new model in which OsFBN7 binds to OsKAS Ia/Ib in chloroplast and enhances their abundance and stability, thereby regulating the chloroplast and PG membrane lipids involved in the formation of PG clusters.
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Affiliation(s)
- Jiajia Li
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Dongyan Kong
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ting Song
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhenzhu Hu
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qiang Li
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Benze Xiao
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Felix Kessler
- Laboratory of Plant Physiology, University of Neuchatel, Neuchatel, 2000, Switzerland
| | - Zhengfeng Zhang
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan, 430079, China
| | - Guosheng Xie
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
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32
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Hanson EK, Whelan RJ. Application of the Nicoya OpenSPR to Studies of Biomolecular Binding: A Review of the Literature from 2016 to 2022. SENSORS (BASEL, SWITZERLAND) 2023; 23:4831. [PMID: 37430747 DOI: 10.3390/s23104831] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/13/2023] [Accepted: 05/16/2023] [Indexed: 07/12/2023]
Abstract
The Nicoya OpenSPR is a benchtop surface plasmon resonance (SPR) instrument. As with other optical biosensor instruments, it is suitable for the label-free interaction analysis of a diverse set of biomolecules, including proteins, peptides, antibodies, nucleic acids, lipids, viruses, and hormones/cytokines. Supported assays include affinity/kinetics characterization, concentration analysis, yes/no assessment of binding, competition studies, and epitope mapping. OpenSPR exploits localized SPR detection in a benchtop platform and can be connected with an autosampler (XT) to perform automated analysis over an extended time period. In this review article, we provide a comprehensive survey of the 200 peer-reviewed papers published between 2016 and 2022 that use the OpenSPR platform. We highlight the range of biomolecular analytes and interactions that have been investigated using the platform, provide an overview on the most common applications for the instrument, and point out some representative research that highlights the flexibility and utility of the instrument.
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Affiliation(s)
- Eliza K Hanson
- Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA
| | - Rebecca J Whelan
- Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA
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33
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Zhang Y, Zhao Y, Hou X, Ni C, Han L, Du P, Xiao K. Wheat ABA Receptor TaPYL5 Constitutes a Signaling Module with Its Downstream Partners TaPP2C53/TaSnRK2.1/TaABI1 to Modulate Plant Drought Response. Int J Mol Sci 2023; 24:ijms24097969. [PMID: 37175676 PMCID: PMC10178726 DOI: 10.3390/ijms24097969] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Abscisic acid receptors (ABR) play crucial roles in transducing the ABA signaling initiated by osmotic stresses, which has a significant impact on plant acclimation to drought by modulating stress-related defensive physiological processes. We characterized TaPYL5, a member of the ABR family in wheat (Triticum aestivum), as a mediator of drought stress adaptation in plants. The signals derived from the fusion of TaPYL5-GFP suggest that the TaPYL5 protein was directed to various subcellular locations, namely stomata, plasma membrane, and nucleus. Drought stress significantly upregulated the TaPYL5 transcripts in roots and leaves. The biological roles of ABA and drought responsive cis-elements, specifically ABRE and recognition sites MYB, in mediating gene transcription under drought conditions were confirmed by histochemical GUS staining analysis for plants harbouring a truncated TaPYL5 promoter. Yeast two-hybrid and BiFC assays indicated that TaPYL5 interacted with TaPP2C53, a clade A member of phosphatase (PP2C), and the latter with TaSnRK2.1, a kinase member of the SnRK2 family, implying the formation of an ABA core signaling module TaPYL5/TaPP2C53/TaSnRK2.1. TaABI1, an ABA responsive transcription factor, proved to be a component of the ABA signaling pathway, as evidenced by its interaction with TaSnRK2.1. Transgene analysis of TaPYL5 and its module partners, as well as TaABI1, revealed that they have an effect on plant drought responses. TaPYL5 and TaSnRK2.1 positively regulated plant drought acclimation, whereas TaPP2C53 and TaABI1 negatively regulated it. This coincided with the osmotic stress-related physiology shown in their transgenic lines, such as stomata movement, osmolytes biosynthesis, and antioxidant enzyme function. TaPYL5 significantly altered the transcription of numerous genes involved in biological processes related to drought defense. Our findings suggest that TaPYL5 is one of the most important regulators in plant drought tolerance and a valuable target for engineering drought-tolerant cultivars in wheat.
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Affiliation(s)
- Yanyang Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Yingjia Zhao
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Xiaoyang Hou
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Chenyang Ni
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Le Han
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Pingping Du
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Kai Xiao
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
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Zhan Q, Shen J, Nie K, Zheng Y. MIW1 participates in ABA signaling through the regulation of MYB30 in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 332:111717. [PMID: 37105379 DOI: 10.1016/j.plantsci.2023.111717] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 04/22/2023] [Indexed: 05/09/2023]
Abstract
Seed germination and seedling establishment are critical biological processes, and their underlying molecular mechanisms have practical implications. The ABA signaling during seed germination and early seedling development is negatively regulated by transcription factor MYB30, but its interaction partners and downstream targets are not fully understood. In this study, we identified MIW1 (MYB30-interacting WD40 protein 1), a WD40 protein that could interact with MYB30 and promote its degradation. In the miw1 mutant, the MYB30 protein became more stable. MIW1 enhanced the ABA-mediated inhibition of postgerminative development. The miw1 mutants became hyposensitive to exogenous ABA, and this effect was suppressed by mutations in MYB30. Furthermore, we found that MYB30 negatively regulated the expression of the ABA receptor genes PYR1/PYL/RCARs. The changes in PYLs expression during early seedling development or under ABA treatment became more pronounced in the myb30 mutant. ChIP-qPCR analyses showed MYB30 could directly bind to the promoters of PYL11 and PYL12. Our study reveals that the WD40 protein MIW1 promotes the expression of PYLs by destabilizing MYB30, thus positively regulating the ABA signaling during postgermination in Arabidopsis.
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Affiliation(s)
- Qidi Zhan
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China; Sanya Institute of Henan University, Sanya, China
| | - Jialu Shen
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China; Sanya Institute of Henan University, Sanya, China
| | - Kaili Nie
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China; Sanya Institute of Henan University, Sanya, China
| | - Yuan Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China; Sanya Institute of Henan University, Sanya, China.
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Wen B, Zhao X, Gong X, Zhao W, Sun M, Chen X, Li D, Li L, Xiao W. The NAC transcription factor MdNAC4 positively regulates nitrogen deficiency-induced leaf senescence by enhancing ABA biosynthesis in apple. MOLECULAR HORTICULTURE 2023; 3:5. [PMID: 37789499 PMCID: PMC10514974 DOI: 10.1186/s43897-023-00053-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 02/22/2023] [Indexed: 10/05/2023]
Abstract
Although it is well established that nitrogen (N) deficiency induces leaf senescence, the molecular mechanism of N deficiency-induced leaf senescence remains largely unknown. Here, we show that an abscisic acid (ABA)-responsive NAC transcription factor (TF) is involved in N deficiency-induced leaf senescence. The overexpression of MdNAC4 led to increased ABA levels in apple calli by directly activating the transcription of the ABA biosynthesis gene MdNCED2. In addition, MdNAC4 overexpression promoted N deficiency-induced leaf senescence. Further investigation showed that MdNAC4 directly bound the promoter of the senescence-associated gene (SAG) MdSAG39 and upregulated its expression. Interestingly, the function of MdNAC4 in promoting N deficiency-induced leaf senescence was enhanced in the presence of ABA. Furthermore, we identified an interaction between the ABA receptor protein MdPYL4 and the MdNAC4 protein. Moreover, MdPYL4 showed a function similar to that of MdNAC4 in ABA-mediated N deficiency-induced leaf senescence. These findings suggest that ABA plays a central role in N deficiency-induced leaf senescence and that MdPYL4 interacts with MdNAC4 to enhance the response of the latter to N deficiency, thus promoting N deficiency-induced leaf senescence. In conclusion, our results provide new insight into how MdNAC4 regulates N deficiency-induced leaf senescence.
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Affiliation(s)
- Binbin Wen
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Xuehui Zhao
- College of Seed and Facility Agricultural Engineering, Weifang University, Weifang, 261061, Shandong, China
| | - Xingyao Gong
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Wenzhe Zhao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Mingyue Sun
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Xiude Chen
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Dongmei Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China
| | - Ling Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China.
| | - Wei Xiao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, Shandong, China.
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Yang Y, Abuauf H, Song S, Wang JY, Alagoz Y, Moreno JC, Mi J, Ablazov A, Jamil M, Ali S, Zheng X, Balakrishna A, Blilou I, Al-Babili S. The Arabidopsis D27-LIKE1 is a cis/cis/trans-β-carotene isomerase that contributes to Strigolactone biosynthesis and negatively impacts ABA level. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:986-1003. [PMID: 36602437 DOI: 10.1111/tpj.16095] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/06/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
The enzyme DWARF27 (D27) catalyzes the reversible isomerization of all-trans- into 9-cis-β-carotene, initiating strigolactone (SL) biosynthesis. Genomes of higher plants encode two D27-homologs, D27-like1 and -like2, with unknown functions. Here, we investigated the enzymatic activity and biological function of the Arabidopsis D27-like1. In vitro enzymatic assays and expression in Synechocystis sp. PCC6803 revealed an unreported 13-cis/15-cis/9-cis- and a 9-cis/all-trans-β-carotene isomerization. Although disruption of AtD27-like1 did not cause SL deficiency phenotypes, overexpression of AtD27-like1 in the d27 mutant restored the more-branching phenotype, indicating a contribution of AtD27-like1 to SL biosynthesis. Accordingly, generated d27 d27like1 double mutants showed a more pronounced branching phenotype compared to d27. The contribution of AtD27-like1 to SL biosynthesis is likely a result of its formation of 9-cis-β-carotene that was present at higher levels in AtD27-like1 overexpressing lines. By contrast, AtD27-like1 expression correlated negatively with the content of 9-cis-violaxanthin, a precursor of ABA, in shoots. Consistently, ABA levels were higher in shoots and also in dry seeds of the d27like1 and d27 d27like1 mutants. Transgenic lines expressing GUS driven by the AtD27LIKE1 promoter and transcript analysis of hormone-treated Arabidopsis seedlings revealed that AtD27LIKE1 is expressed in different tissues and affects ABA and auxin. Taken together, our work reports a cis/cis-β-carotene isomerase that affects the content of both cis-carotenoid-derived plant hormones, ABA and SLs.
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Affiliation(s)
- Yu Yang
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
- Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah, 23955, Saudi Arabia
| | - Haneen Abuauf
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
- Department of Biology, Faculty of Applied Sciences, Umm Al-Qura University, 8XH2+XVP, Mecca, 24382, Saudi Arabia
| | - Shanshan Song
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Jian You Wang
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Yagiz Alagoz
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Juan C Moreno
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Jianing Mi
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Abdugaffor Ablazov
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
- Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah, 23955, Saudi Arabia
| | - Muhammad Jamil
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Shawkat Ali
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
- Agriculture and Agri-Food Canada, Kentville Research and Development Centre, 32 Main Street, Kentville, NS, B4N 1J5, Canada
| | - Xiongjie Zheng
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Aparna Balakrishna
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Ikram Blilou
- Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah, 23955, Saudi Arabia
- The Laboratory of Plant Cell and Developmental Biology, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
| | - Salim Al-Babili
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Jeddah, 23955, Saudi Arabia
- Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah, 23955, Saudi Arabia
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Kumar M, Kumar S, Sandhu KS, Kumar N, Saripalli G, Prakash R, Nambardar A, Sharma H, Gautam T, Balyan HS, Gupta PK. GWAS and genomic prediction for pre-harvest sprouting tolerance involving sprouting score and two other related traits in spring wheat. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:14. [PMID: 37313293 PMCID: PMC10248620 DOI: 10.1007/s11032-023-01357-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 01/26/2023] [Indexed: 06/15/2023]
Abstract
In wheat, a genome-wide association study (GWAS) and genomic prediction (GP) analysis were conducted for pre-harvest sprouting (PHS) tolerance and two of its related traits. For this purpose, an association panel of 190 accessions was phenotyped for PHS (using sprouting score), falling number, and grain color over two years and genotyped with 9904 DArTseq based SNP markers. GWAS for main-effect quantitative trait nucleotides (M-QTNs) using three different models (CMLM, SUPER, and FarmCPU) and epistatic QTNs (E-QTNs) using PLINK were performed. A total of 171 M-QTNs (CMLM, 47; SUPER, 70; FarmCPU, 54) for all three traits, and 15 E-QTNs involved in 20 first-order epistatic interactions were identified. Some of the above QTNs overlapped the previously reported QTLs, MTAs, and cloned genes, allowing delineating 26 PHS-responsive genomic regions that spread over 16 wheat chromosomes. As many as 20 definitive and stable QTNs were considered important for use in marker-assisted recurrent selection (MARS). The gene, TaPHS1, for PHS tolerance (PHST) associated with one of the QTNs was also validated using the KASP assay. Some of the M-QTNs were shown to have a key role in the abscisic acid pathway involved in PHST. Genomic prediction accuracies (based on the cross-validation approach) using three different models ranged from 0.41 to 0.55, which are comparable to the results of previous studies. In summary, the results of the present study improved our understanding of the genetic architecture of PHST and its related traits in wheat and provided novel genomic resources for wheat breeding based on MARS and GP. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-023-01357-5.
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Affiliation(s)
- Manoj Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Sachin Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | | | - Neeraj Kumar
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC USA
| | - Gautam Saripalli
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD USA
| | - Ram Prakash
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Akash Nambardar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Hemant Sharma
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Tinku Gautam
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Harindra Singh Balyan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
| | - Pushpendra Kumar Gupta
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, UP India
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Wang QY, Yang L, Ge N, Jia JS, Huang RM, Chen C, Meng ZG, Li LG, Chen JW. Exogenous abscisic acid prolongs the dormancy of recalcitrant seed of Panax notoginseng. FRONTIERS IN PLANT SCIENCE 2023; 14:1054736. [PMID: 36866363 PMCID: PMC9971733 DOI: 10.3389/fpls.2023.1054736] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 01/20/2023] [Indexed: 06/12/2023]
Abstract
The seeds of Panax notoginseng (Burk.) F. H. Chen are typically characterized by their recalcitrance and after-ripening process and exhibit a high water content at harvest as well as a high susceptibility to dehydration. Storage difficulty and the low germination of recalcitrant seeds of P. notoginseng are known to cause an obstacle to agricultural production. In this study, the ratio of embryo to endosperm (Em/En) in abscisic acid (ABA) treatments (1 mg·l-1 and 10 mg·l-1, LA and HA) was 53.64% and 52.34%, respectively, which were lower than those in control check (CK) (61.98%) at 30 days of the after-ripening process (DAR). A total of 83.67% of seeds germinated in the CK, 49% of seeds germinated in the LA treatment, and 37.33% of seeds germinated in the HA treatment at 60 DAR. The ABA, gibberellin (GA), and auxin (IAA) levels were increased in the HA treatment at 0 DAR, while the jasmonic acid (JA) levels were decreased. ABA, IAA, and JA were increased, but GA was decreased with HA treatment at 30 DAR. A total of 4,742, 16,531, and 890 differentially expressed genes (DEGs) were identified between the HA-treated and CK groups, respectively, along with obvious enrichment in the ABA-regulated plant hormone pathway and the mitogen-activated protein kinase (MAPK) signaling pathway. The expression of pyracbactin resistance-like (PYL) and SNF1-related protein kinase subfamily 2 (SnRK2s) increased in the ABA-treated groups, whereas the expression of type 2C protein phosphatase (PP2C) decreased, both of which are related to the ABA signaling pathway. As a result of the changes in expression of these genes, increased ABA signaling and suppressed GA signaling could inhibit the growth of the embryo and the expansion of developmental space. Furthermore, our results demonstrated that MAPK signaling cascades might be involved in the amplification of hormone signaling. Meanwhile, our study uncovered that the exogenous hormone ABA could inhibit embryonic development, promote dormancy, and delay germination in recalcitrant seeds. These findings reveal the critical role of ABA in regulating the dormancy of recalcitrant seeds, and thereby provide a new insight into recalcitrant seeds in agricultural production and storage.
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Affiliation(s)
- Qing-Yan Wang
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Ling Yang
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Na Ge
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Jin-Shan Jia
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Rong-Mei Huang
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Cui Chen
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Zhen-Gui Meng
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Long-Gen Li
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
| | - Jun-Wen Chen
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, China
- National and Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, China
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Steiner PJ, Swift SD, Bedewitz M, Wheeldon I, Cutler SR, Nusinow DA, Whitehead TA. A Closed Form Model for Molecular Ratchet-Type Chemically Induced Dimerization Modules. Biochemistry 2023; 62:281-291. [PMID: 35675717 DOI: 10.1021/acs.biochem.2c00172] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Chemical-induced dimerization (CID) modules enable users to implement ligand-controlled cellular and biochemical functions for a number of problems in basic and applied biology. A special class of CID modules occur naturally in plants and involve a hormone receptor that binds a hormone, triggering a conformational change in the receptor that enables recognition by a second binding protein. Two recent reports show that such hormone receptors can be engineered to sense dozens of structurally diverse compounds. As a closed form model for molecular ratchets would be of immense utility in forward engineering of biological systems, here we have developed a closed form model for these distinct CID modules. These modules, which we call molecular ratchets, are distinct from more common CID modules called molecular glues in that they engage in saturable binding kinetics and are characterized well by a Hill equation. A defining characteristic of molecular ratchets is that the sensitivity of the response can be tuned by increasing the molar ratio of the hormone receptor to the binding protein. Thus, the same molecular ratchet can have a pico- or micromolar EC50 depending on the concentration of the different receptor and binding proteins. Closed form models are derived for a base elementary reaction rate model, for ligand-independent complexation of the receptor and binding protein, and for homodimerization of the hormone receptor. Useful governing equations for a variety of in vitro and in vivo applications are derived, including enzyme-linked immunosorbent assay-like microplate assays, transcriptional activation in prokaryotes and eukaryotes, and ligand-induced split protein complementation.
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Affiliation(s)
- Paul J Steiner
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Samuel D Swift
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Matthew Bedewitz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Ian Wheeldon
- Institute for Integrative Genome Biology, University of California Riverside, Riverside, California 92521, United States.,Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Sean R Cutler
- Institute for Integrative Genome Biology, University of California Riverside, Riverside, California 92521, United States.,Department of Botany and Plant Sciences, University of California Riverside, Riverside, California 92521, United States.,Center for Plant Cell Biology, University of California Riverside, Riverside, California 92521, United States
| | - Dmitri A Nusinow
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132, United States
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
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40
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Tian R, Sun X, Liu C, Chu J, Zhao M, Zhang WH. A Medicago truncatula lncRNA MtCIR1 negatively regulates response to salt stress. PLANTA 2023; 257:32. [PMID: 36602592 DOI: 10.1007/s00425-022-04064-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
A lncRNA MtCIR1 negatively regulates the response to salt stress in Medicago truncatula seed germination by modulating seedling growth and ABA metabolism and signaling by enhancing Na+ accumulation. Increasing evidence suggests that long non-coding RNAs (lncRNAs) are involved in the regulation of plant tolerance to varying abiotic stresses. A large number of lncRNAs that are responsive to abiotic stress have been identified in plants; however, the mechanisms underlying the regulation of plant responses to abiotic stress by lncRNAs are largely unclear. Here, we functionally characterized a salt stress-responsive lncRNA derived from the leguminous model plant M. truncatula, referred to as MtCIR1, by expressing MtCIR1 in Arabidopsis thaliana in which no such homologous sequence was observed. Expression of MtCIR1 rendered seed germination more sensitive to salt stress by enhanced accumulation of abscisic acid (ABA) due to suppressing the expression of the ABA catabolic enzyme CYP707A2. Expression of MtCIR1 also suppressed the expression of genes associated with ABA receptors and signaling. The ABA-responsive gene AtPGIP2 that was involved in degradation of cell wall during seed germination was up-regulated by expressing MtCIR1. On the other hand, expression of MtCIR1 in Arabidopsis thaliana enhanced foliar Na+ accumulation by down-regulating genes encoding Na+ transporters, thus rendering the transgenic plants more sensitive to salt stress. These results demonstrate that the M. truncatula lncRNA MtCIR1 negatively regulates salt stress response by targeting ABA metabolism and signaling during seed germination and foliar Na+ accumulation by affecting Na+ transport under salt stress during seedling growth. These novel findings would advance our knowledge on the regulatory roles of lncRNAs in response of plants to salt stress.
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Affiliation(s)
- Rui Tian
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, People's Republic of China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Xiaohan Sun
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, People's Republic of China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Cuimei Liu
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Mingui Zhao
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, People's Republic of China.
| | - Wen-Hao Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, People's Republic of China.
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
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Chen J, Wang Z, Wang L, Hu Y, Yan Q, Lu J, Ren Z, Hong Y, Ji H, Wang H, Wu X, Lin Y, Su C, Ott T, Li X. The B-type response regulator GmRR11d mediates systemic inhibition of symbiotic nodulation. Nat Commun 2022; 13:7661. [PMID: 36496426 PMCID: PMC9741591 DOI: 10.1038/s41467-022-35360-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Key to the success of legumes is the ability to form and maintain optimal symbiotic nodules that enable them to balance the trade-off between symbiosis and plant growth. Cytokinin is essential for homeostatic regulation of nodulation, but the mechanism remains incompletely understood. Here, we show that a B-type response regulator GmRR11d mediates systemic inhibition of nodulation. GmRR11d is induced by rhizobia and low level cytokinin, and GmRR11d can suppress the transcriptional activity of GmNSP1 on GmNIN1a to inhibit soybean nodulation. GmRR11d positively regulates cytokinin response and its binding on the GmNIN1a promoter is enhanced by cytokinin. Intriguingly, rhizobial induction of GmRR11d and its function are dependent upon GmNARK that is a CLV1-like receptor kinase and inhibits nodule number in shoots. Thus, GmRR11d governs a transcriptional program associated with nodulation attenuation and cytokinin response activation essential for systemic regulation of nodulation.
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Affiliation(s)
- Jiahuan Chen
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhijuan Wang
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Lixiang Wang
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China ,grid.412545.30000 0004 1798 1300College of Agriculture, Shanxi Agricultural University, Taigu, China
| | - Yangyang Hu
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiqi Yan
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jingjing Lu
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ziyin Ren
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yujie Hong
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hongtao Ji
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hui Wang
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xinying Wu
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanru Lin
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chao Su
- grid.5963.9University of Freiburg, Faculty of Biology, Cell Biology, Freiburg, Germany
| | - Thomas Ott
- grid.5963.9University of Freiburg, Faculty of Biology, Cell Biology, Freiburg, Germany ,grid.5963.9CIBSS - Centre of Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany
| | - Xia Li
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China ,grid.20561.300000 0000 9546 5767Guangdong Laboratory for Lingnan Modern Agriculture, Wushan Road, Guangzhou, Guangdong, PR China
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Zhang Z, Yang W, Chu Y, Yin X, Liang Y, Wang Q, Wang L, Han Z. AtHD2D, a plant-specific histone deacetylase involved in abscisic acid response and lateral root development. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:7380-7400. [PMID: 36125085 DOI: 10.1093/jxb/erac381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 09/18/2022] [Indexed: 06/15/2023]
Abstract
In eukaryotes, histone acetylation levels directly regulate downstream gene expression. As a plant-specific histone deacetylase (HDAC), HD2D is involved in plant development and abiotic stress. However, the response of HD2D to drought stress and its interacting proteins, is still unclear. In this study, we analysed HD2D gene expression patterns in Arabidopsis, revealing that HD2D gene was highly expressed in roots and rosette leaves, but poorly expressed in other tissues such as stems, flowers, and young siliques. The HD2D gene expression was induced by d-mannitol. We investigated the responses to drought stress in the wild-type plant, HD2D overexpression lines, and hd2d mutants. HD2D-overexpressing lines showed abscisic acid (ABA) hypersensitivity and drought tolerance, and these phenotypes were not present in hd2d mutants. RNA-seq analysis revealed the transcriptome changes caused by HD2D under drought stress, and showed that HD2D responded to drought stress via the ABA signalling pathway. In addition, we demonstrated that CASEIN KINASE II (CKA4) directly interacted with HD2D. The phosphorylation of Ser residues on HD2D by CKA4 enhanced HD2D enzymatic activity. Furthermore, the phosphorylation of HD2D was shown to contribute to lateral root development and ABA sensing in Arabidopsis, but, these phenotypes could not be reproduced by the overexpression of Ser-phospho-null HD2D lines. Collectively, this study suggests that HD2D responded to drought stress by regulating the ABA signalling pathway, and the expression of drought stress-related genes. The regulatory mechanism of HD2D mediated by CKII phosphorylation provides new insights into the ABA response and lateral root development in Arabidopsis.
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Affiliation(s)
- Zhaochen Zhang
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Weixia Yang
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Yueyang Chu
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Xiaotong Yin
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Yueqi Liang
- College of Innovation and Experiment, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Qiuping Wang
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Lei Wang
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
| | - Zhaofen Han
- College of Life Science, Northwest A & F University, Yangling, Shanxi 712100, China
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Chang YN, Wang Z, Ren Z, Wang CH, Wang P, Zhu JK, Li X, Duan CG. NUCLEAR PORE ANCHOR and EARLY IN SHORT DAYS 4 negatively regulate abscisic acid signaling by inhibiting Snf1-related protein kinase2 activity and stability in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:2060-2074. [PMID: 35984097 DOI: 10.1111/jipb.13349] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Abscisic acid (ABA) is a key regulator of plant responses to abiotic stresses, such as drought. Abscisic acid receptors and coreceptors perceive ABA to activate Snf1-related protein kinase2s (SnRK2s) that phosphorylate downstream effectors, thereby activating ABA signaling and the stress response. As stress responses come with fitness penalties for plants, it is crucial to tightly control SnRK2 kinase activity to restrict ABA signaling. However, how SnRK2 kinases are inactivated remains elusive. Here, we show that NUCLEAR PORE ANCHOR (NUA), a nuclear pore complex (NPC) component, negatively regulates ABA-mediated inhibition of seed germination and post-germination growth, and drought tolerance in Arabidopsis thaliana. The role of NUA in response to ABA depends on SnRK2.2 and SnRK2.3 for seed germination and on SnRK2.6 for drought. NUA does not directly inhibit the phosphorylation of these SnRK2s or affects their abundance. However, the NUA-interacting protein EARLY IN SHORT DAYS 4 (ESD4), a SUMO protease, negatively regulates ABA signaling by directly interacting with and inhibiting SnRK2 phosphorylation and protein levels. More importantly, we demonstrated that SnRK2.6 can be SUMOylated in vitro, and ESD4 inhibits its SUMOylation. Taken together, we identified NUA and ESD4 as SnRK2 kinase inhibitors that block SnRK2 activity, and reveal a mechanism whereby NUA and ESD4 negatively regulate plant responses to ABA and drought stress possibly through SUMOylation-dependent regulation of SnRK2s.
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Affiliation(s)
- Ya-Nan Chang
- Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences, the Chinese Academy of Science, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhijuan Wang
- National Key Laboratory of Crop Genetic and Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ziyin Ren
- National Key Laboratory of Crop Genetic and Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chun-Han Wang
- Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences, the Chinese Academy of Science, Shanghai, 201602, China
| | - Pengcheng Wang
- Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences, the Chinese Academy of Science, Shanghai, 201602, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences, the Chinese Academy of Science, Shanghai, 201602, China
- Department of Horticulture and Architecture Landscape, Purdue University, West Lafayette, IN 47907, USA
| | - Xia Li
- National Key Laboratory of Crop Genetic and Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Cheng-Guo Duan
- Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences, the Chinese Academy of Science, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Guan P, Xie C, Zhao D, Wang L, Zheng C. SES1 is vital for seedling establishment and post-germination growth under high-potassium stress conditions in Arabidopsis thaliana. PeerJ 2022; 10:e14282. [PMID: 36340207 PMCID: PMC9632470 DOI: 10.7717/peerj.14282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/30/2022] [Indexed: 11/20/2022] Open
Abstract
Background The potassium ion (K+) plays an important role in maintaining plant growth and development, while excess potassium in the soil can cause stress to plants. The understanding of the molecular mechanism of plant's response to high KCl stress is still limited. Methods At the seed stage, wild type (WT) and SENSITIVE TO SALT1 (SES1) mutants were exposed to different concentrations of potassium treatments. Tolerance was assayed as we compared their performances under stress using seedling establishment rate and root length. Na+content, K+content, and K+/Na+ ratio were determined using a flame atomic absorption spectrometer. In addition, the expressions of KCl-responding genes and ER stress-related genes were also detected and analyzed using qRT-PCR. Results SES1 mutants exhibited seedling establishment defects under high potassium concentration conditions and exogenous calcium partially restored the hypersensitivity phenotype of ses1 mutants. The expression of some K+ transporter/channel genes were higher in ses1-2, and the ratio of potassium to sodium (K+/Na+) in ses1-2 roots decreased after KCl treatment compared with WT. Further analysis showed that the ER stress marker genes were dramatically induced by high K+ treatment and much higher expression levels were detected in ses1-2, indicating ses1-2 suffers a more serious ER stress than WT, and ER stress may influence the seedling establishment of ses1-2 under high KCl conditions. Conclusion These results strongly indicate that SES1 is a potassium tolerance relevant molecule that may be related to maintaining the seedling K+/Na+ balance under high potassium conditions during seedling establishment and post-germination growth. Our results will provide a basis for further studies on the biological roles of SES1 in modulating potassium uptake, transport, and adaptation to stress conditions.
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Affiliation(s)
| | - Chen Xie
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
| | - Dongbo Zhao
- Dezhou Academy of Agricultural Sciences, Dezhou, China
| | | | - Chengchao Zheng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
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Identification of Key Genes during Ethylene-Induced Adventitious Root Development in Cucumber (Cucumis sativus L.). Int J Mol Sci 2022; 23:ijms232112981. [PMID: 36361778 PMCID: PMC9658848 DOI: 10.3390/ijms232112981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/20/2022] [Accepted: 10/24/2022] [Indexed: 12/04/2022] Open
Abstract
Ethylene (ETH), as a key plant hormone, plays critical roles in various processes of plant growth and development. ETH has been reported to induce adventitious rooting. Moreover, our previous studies have shown that exogenous ETH may induce plant adventitious root development in cucumber (Cucumis sativus L.). However, the key genes involved in this process are still unclear. To explore the key genes in ETH-induced adventitious root development, we employed a transcriptome technique and revealed 1415 differentially expressed genes (DEGs), with 687 DEGs up-regulated and 728 DEGs down-regulated. Using Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, we further identified critical pathways that were involved in ETH-induced adventitious root development, including carbon metabolism (starch and sucrose metabolism, glycolysis/gluconeogenesis, citrate cycle (TCA cycle), oxidative phosphorylation, fatty acid biosynthesis, and fatty acid degradation), secondary metabolism (phenylalanine metabolism and flavonoid biosynthesis) and plant hormone signal transduction. In carbon metabolism, ETH reduced the content of sucrose, glucose, starch, the activity of sucrose synthase (SS), sucrose–phosphate synthase (SPS) and hexokinase (HK), and the expressions of CsHK2, pyruvate kinase2 (CsPK2), and CsCYP86A1, whereas it enhanced the expressions of β-amylase 1 (CsBAM1) and β-amylase 3 (CsBAM3). In secondary metabolism, the transcript levels of phenylalanine ammonia-lyase (CsPAL) and flavonoid 3′-monooxygenase (CsF3′M) were negatively regulated, and that of primary-amine oxidase (CsPAO) was positively regulated by ETH. Additionally, the indole-3-acetic acid (IAA) content and the expressions of auxin and ETH signaling transduction-related genes (auxin transporter-like protein 5 (CsLAX5), CsGH3.17, CsSUAR50, and CsERS) were suppressed, whereas the abscisic acid (ABA) content and the expressions of ABA and BR signaling transduction-related genes (CsPYL1, CsPYL5, CsPYL8, BRI1-associated kinase 1 (CsBAK1), and CsXTH3) were promoted by ETH. Furthermore, the mRNA levels of these genes were confirmed by real-time PCR (RT-qPCR). These results indicate that genes related to carbon metabolism, secondary metabolite biosynthesis, and plant hormone signaling transduction are involved in ETH-induced adventitious root development. This work identified the key pathways and genes in ETH-induced adventitious rooting in cucumber, which may provide new insights into ETH-induced adventitious root development and will be useful for investigating the molecular roles of key genes in this process in further studies.
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Wen D, Bao L, Huang X, Qian X, Chen E, Shen B. OsABT Is Involved in Abscisic Acid Signaling Pathway and Salt Tolerance of Roots at the Rice Seedling Stage. Int J Mol Sci 2022; 23:10656. [PMID: 36142568 PMCID: PMC9504391 DOI: 10.3390/ijms231810656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 12/03/2022] Open
Abstract
Rice is a staple cereal crop worldwide, and increasing its yields is vital to ensuring global food security. Salinity is a major factor that affects rice yield. Therefore, it is necessary to investigate salt tolerance mechanisms in rice. Proteins containing WD40 repeats play important roles in eukaryotic development and environmental adaptation. Here, we showed that overexpression of OsABT, a gene encoding a WD40-repeat protein, enhanced salt tolerance in rice seedlings by regulating root activity, relative conductivity, malondialdehyde and H2O2 content, and O2•- production rate. Root ion concentrations indicated that OsABT overexpression lines could maintain lower Na+ and higher K+/Na+ ratios and upregulated expression of salt-related genes OsSOS1 and OsHAK5 compared with the wild-type (WT) Nipponbare plants. Furthermore, Overexpression of OsABT decreased the abscisic acid (ABA) content, while downregulating the ABA synthesis genes OsNCED3 and OsNCED4 and upregulating the ABA catabolic gene OsABA8ox2. The yeast two-hybrid and bimolecular fluorescence complementation analyses showed that OsABT interacted with the ABA receptor proteins OsPYL4, OsPYL10, and PP2C phosphatase OsABIL2. A transcriptome analysis revealed that the differentially expressed genes between OsABT overexpression lines and WT plants were enriched in plant hormone signal transduction, including ABA signaling pathway under salt stress. Thus, OsABT can improve the salt tolerance in rice seedling roots by inhibiting reactive oxygen species accumulation, thereby regulating the intracellular Na+/K+ balance, ABA content, and ABA signaling pathway.
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Affiliation(s)
- Danni Wen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Lingran Bao
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xuanzhu Huang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xueduo Qian
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Eryong Chen
- Life School of Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Bo Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
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Jing Y, Zhan M, Li C, Pei T, Wang Q, Li P, Ma F, Liu C. The apple FERONIA receptor-like kinase MdMRLK2 negatively regulates Valsa canker resistance by suppressing defence responses and hypersensitive reaction. MOLECULAR PLANT PATHOLOGY 2022; 23:1170-1186. [PMID: 35412700 PMCID: PMC9276949 DOI: 10.1111/mpp.13218] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 05/05/2023]
Abstract
Valsa canker, caused by the fungus Valsa mali, is one of the most destructive diseases of apple trees in China and other East Asian countries. The plant receptor-like kinase FERONIA is involved in plant cell growth, development, and immunity. However, little is known about the function of FERONIA in apple defence against V. mali. In this study, we found that MdMRLK2 was highly induced by V. mali in twigs of V. mali-susceptible Malus mellana but not in those of the resistant species Malus yunnaensis. 35S:MdMRLK2 apple plants showed compromised resistance relative to wild-type (WT) plants. Further analyses indicated that 35S:MdMRLK2 apple plants had enhanced abscisic acid (ABA) levels and reduced salicylic acid (SA) levels relative to the WT on V. mali infection. MdMRLK2 overexpression also suppressed polyphenol accumulation and inhibited the activities of phenylalanine ammonia-lyase (PAL), β-1,3-glucanase (GLU), and chitinase (CHT) during V. mali infection. Moreover, MdMRLK2 interacted with MdHIR1, a hypersensitive-induced response protein, and suppressed the MdHIR1-mediated hypersensitive reaction (HR), probably by impairing MdHIR1 self-interaction. Collectively, these findings demonstrate that overexpression of MdMRLK2 compromises Valsa canker resistance, probably by (a) altering ABA and SA levels, (b) suppressing polyphenol accumulation, (c) inhibiting PAL, GLU, and CHT activities, and (d) blocking MdHIR1-mediated HR by disrupting MdHIR1 self-interaction.
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Affiliation(s)
- Yuanyuan Jing
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Minghui Zhan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Chunrong Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Tingting Pei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Qi Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Pengmin Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Changhai Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
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Tian R, Kong Y, Shao Z, Zhang H, Li X, Zhang C. Discovery of genetic loci and causal genes for seed germination via deep re-sequencing in soybean. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2022; 42:45. [PMID: 37313514 PMCID: PMC10248669 DOI: 10.1007/s11032-022-01316-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
High seed germination is crucial for mechanical sowing, seedling establishment, growth potential, multiple resistances, and the formation of yield and quality. However, few genetic loci and candidate genes conferring seed germination were explored in soybean at present. In view of this, a natural population containing 199 accessions was assessed for the germination potential (GP) and germination rate (GR) and also was re-sequenced at the average sequencing depth of 18.4 × for each accession. In total, 5,665,469 SNPs were obtained for association analysis, and 470 SNPs in 55 loci on 18 chromosomes were identified to associate with seed germination. Of them, 85 SNPs on chromosomes 1, 10, and 14 were associated with mean value and BLUP value for GP and GR, simultaneously. Moreover, 324 SNPs (68.9% of the total) in four loci were located on chromosome 14 for seed germination, of which 11 SNPs were located in the exons, 30 in introns, 17 in 5'UTR or 3'UTR, and 46 in upstream or downstream. Based on these, 131 candidate genes flanking the associated SNPs were analyzed for gene annotation, SNP mutation, and RNA expression, and three causal genes, Glyma.14G069800 (RNA-binding protein), Glyma.14G071400 (bZIP transcription factor), and Glyma.17G033200 (nucleic acid-binding protein), were screened out and might be responsible for the seed germination. The closely associated SNPs and causal genes provided an important resource and dissecting of genetic basis for seed germination improvement in soybean. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-022-01316-6.
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Affiliation(s)
- Rui Tian
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
| | - Youbin Kong
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
| | - Zhenqi Shao
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
| | - Hua Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
| | - Xihuan Li
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
| | - Caiying Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Key Laboratory for Crop Germplasm Resources of Hebei, Hebei Agricultural University, Lekai South Street 2596, Baoding City, 071000 Hebei Province China
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49
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Bai YL, Xiong CF, Yin X, Ye T, Cai BD, Song WL, Feng YQ. Screening and Identification of Potential Abscisic Acid Catabolites by Chemical Labeling-Assisted Ultrahigh-Performance Liquid Chromatography Coupled with High-Resolution Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8808-8818. [PMID: 35796587 DOI: 10.1021/acs.jafc.2c02190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, a screening strategy was established based on ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry assisted by chemical isotope labeling (CIL-UPLC-HRMS) for screening and identifying abscisic acid (ABA) catabolites. Based on the structures of known ABA catabolites, this strategy first proposed the structures of catabolites to be discovered. Afterward, a pair of isotope reagents N,N-2-dimethylaminoethylamine (DMED) and d4-DMED were used as labeling reagents to label the carboxyl groups in ABA and its catabolites. Then, the mass-to-charge ratio (m/z) of DMED- and d4-DMED-labeled ABA catabolites was calculated based on the labeling schema. In light of the characteristic fragmentation patterns of the DMED-labeled standards of ABA and its catabolites, screening criteria were formulated. Using our strategy, ABA, t-ABA, and 18 ABA catabolites were identified from seven plant samples. Of the identified catabolites, 16 were known, and to our knowledge, 2 were previously unidentified. Our findings contribute to ABA catabolic network improvement.
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Affiliation(s)
- Ya-Li Bai
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Cai-Feng Xiong
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Xiaoming Yin
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Tiantian Ye
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bao-Dong Cai
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Wen-Li Song
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Yu-Qi Feng
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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50
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Sun Z, Feng Z, Ding Y, Qi Y, Jiang S, Li Z, Wang Y, Qi J, Song C, Yang S, Gong Z. RAF22, ABI1 and OST1 form a dynamic interactive network that optimizes plant growth and responses to drought stress in Arabidopsis. MOLECULAR PLANT 2022; 15:1192-1210. [PMID: 35668674 DOI: 10.1016/j.molp.2022.06.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/27/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Plants adapt to their ever-changing environment via positive and negative signals induced by environmental stimuli. Drought stress, for instance, induces accumulation of the plant hormone abscisic acid (ABA), triggering ABA signal transduction. However, the molecular mechanisms for switching between plant growth promotion and stress response remain poorly understood. Here we report that RAF (rapidly accelerated fibrosarcoma)-LIKE MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE 22 (RAF22) in Arabidopsis thaliana physically interacts with ABA INSENSITIVE 1 (ABI1) and phosphorylates ABI1 at Ser416 residue to enhance its phosphatase activity. Interestingly, ABI1 can also enhance the activity of RAF22 through dephosphorylation, reciprocally inhibiting ABA signaling and promoting the maintenance of plant growth under normal conditions. Under drought stress, however, the ABA-activated OPEN STOMATA1 (OST1) phosphorylates the Ser81 residue of RAF22 and inhibits its kinase activity, restraining its enhancement of ABI1 activity. Taken together, our study reveals that RAF22, ABI1, and OST1 form a dynamic regulatory network that plays crucial roles in optimizing plant growth and environmental adaptation under drought stress.
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Affiliation(s)
- Zhihui Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Zhenkai Feng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yanglin Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yuanpeng Qi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Shan Jiang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Zhen Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yu Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Junsheng Qi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Chunpeng Song
- Collaborative Innovation Center of Crop Stress Biology, Institute of Plant Stress Biology, Henan University, Kaifeng 475001, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China; School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding 100193, China.
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