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Luan Y, Chen Z, Fang Z, Meng J, Tao J, Zhao D. PoWRKY69-PoVQ11 module positively regulates drought tolerance by accumulating fructose in Paeonia ostii. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:1782-1799. [PMID: 38975960 DOI: 10.1111/tpj.16884] [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: 04/19/2023] [Revised: 05/24/2024] [Accepted: 06/03/2024] [Indexed: 07/09/2024]
Abstract
Drought is a detrimental environmental factor that restricts plant growth and threatens food security throughout the world. WRKY transcription factors play vital roles in abiotic stress response. However, the roles of IIe subgroup members from WRKY transcription factor family in soluble sugar mediated drought response are largely elusive. In this study, we identified a drought-responsive IIe subgroup WRKY transcription factor, PoWRKY69, from Paeonia ostii. PoWRKY69 functioned as a positive regulator in response to drought stress with nucleus expression and transcriptional activation activity. Silencing of PoWRKY69 increased plants sensitivity to drought stress, whereas conversely, overexpression of PoWRKY69 enhanced drought tolerance in plants. As revealed by yeast one-hybrid, electrophoretic mobility shift assay, and luciferase reporter assays, PoWRKY69 could directly bind to the W-box element of fructose-1,6-bisphosphate aldolase 5 (PoFBA5) promoter, contributing to a cascade regulatory network to activate PoFBA5 expression. Furthermore, virus-induced gene silencing and overexpression assays demonstrated that PoFBA5 functioned positively in response to drought stress by accumulating fructose to alleviate membrane lipid peroxidation and activate antioxidant defense system, these changes resulted in reactive oxygen species scavenging. According to yeast two-hybrid, bimolecular fluorescence complementation, and firefly luciferase complementation imaging assays, valine-glutamine 11 (PoVQ11) physically interacted with PoWRKY69 and led to an enhanced activation of PoWRKY69 on PoFBA5 promoter activity. This study broadens our understanding of WRKY69-VQ11 module regulated fructose accumulation in response to drought stress and provides feasible molecular measures to create novel drought-tolerant germplasm of P. ostii.
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Affiliation(s)
- Yuting Luan
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Zijie Chen
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Ziwen Fang
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Jiasong Meng
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Jun Tao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Daqiu Zhao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
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2
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Zhao Z, Wang R, Su W, Sun T, Qi M, Zhang X, Wei F, Yu Z, Xiao F, Yan L, Yang C, Zhang J, Wang D. A comprehensive analysis of the WRKY family in soybean and functional analysis of GmWRKY164-GmGSL7c in resistance to soybean mosaic virus. BMC Genomics 2024; 25:620. [PMID: 38898399 PMCID: PMC11188170 DOI: 10.1186/s12864-024-10523-8] [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: 12/13/2023] [Accepted: 06/14/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Soybean mosaic disease caused by soybean mosaic virus (SMV) is one of the most devastating and widespread diseases in soybean producing areas worldwide. The WRKY transcription factors (TFs) are widely involved in plant development and stress responses. However, the roles of the GmWRKY TFs in resistance to SMV are largely unclear. RESULTS Here, 185 GmWRKYs were characterized in soybean (Glycine max), among which 60 GmWRKY genes were differentially expressed during SMV infection according to the transcriptome data. The transcriptome data and RT-qPCR results showed that the expression of GmWRKY164 decreased after imidazole treatment and had higher expression levels in the incompatible combination between soybean cultivar variety Jidou 7 and SMV strain N3. Remarkably, the silencing of GmWRKY164 reduced callose deposition and enhanced virus spread during SMV infection. In addition, the transcript levels of the GmGSL7c were dramatically lower upon the silencing of GmWRKY164. Furthermore, EMSA and ChIP-qPCR revealed that GmWRKY164 can directly bind to the promoter of GmGSL7c, which contains the W-box element. CONCLUSION Our findings suggest that GmWRKY164 plays a positive role in resistance to SMV infection by regulating the expression of GmGSL7c, resulting in the deposition of callose and the inhibition of viral movement, which provides guidance for future studies in understanding virus-resistance mechanisms in soybean.
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Affiliation(s)
- Zhihua Zhao
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Rongna Wang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Weihua Su
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Tianjie Sun
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Mengnan Qi
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Xueyan Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Fengju Wei
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Zhouliang Yu
- School of Life Sciences, Yunnan University, Kunming, 650500, China
| | - Fuming Xiao
- Handan Municipal Academy of Agricultural Sciences, Hebei Province, Handan, 056001, China
| | - Long Yan
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050031, China
| | - Chunyan Yang
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050031, China
| | - Jie Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China.
| | - Dongmei Wang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China.
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3
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Yan X, Zhao J, Huang W, Liu C, Hao X, Gao C, Deng M, Wen J. Genome-Wide Identification of WRKY Transcription Factor Family in Chinese Rose and Response to Drought, Heat, and Salt Stress. Genes (Basel) 2024; 15:800. [PMID: 38927736 PMCID: PMC11203230 DOI: 10.3390/genes15060800] [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: 04/27/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
The WRKY gene family is a key transcription factor family for plant development and the stress response. However, few studies have investigated the WRKY gene family in Chinese rose (Rosa chinensis). In this study, 68 RcWRKY genes were identified from the Chinese rose genome and classified into three primary groups and five subgroups based on the structural and phylogenetic characteristics. The analysis of the conserved domains, motifs, and gene structure revealed that the RcWRKY genes within the same group had the same exon-intron organization and composition. Chromosome mapping and gene duplication revealed that the RcWRKY genes were randomly dispersed across seven chromosomes. Fragment duplication and refined selection may have influenced the evolution of the WRKY gene family in Chinese rose. The cis-acting elements in the WRKY promoter region revealed that the RcWRKY genes contained numerous abiotic stress response elements. The results of qRT-PCR revealed that the expression of RcWRKY was tissue-specific, with high expression being observed under drought, heat, and salt stress. Notably, RcWRKY49's expression increased more than fivefold following salt stress, indicating that it is a crucial gene mediating the salt stress response of Chinese rose. These findings shed light on the regulatory role of RcWRKY in the growth and development of Chinese rose, and they serve as a foundation for future molecular breeding programs and gene discovery.
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Affiliation(s)
- Xinyu Yan
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
| | - Jiahui Zhao
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
| | - Wei Huang
- College of Agronomy and Life Sciences, Kunming University, Kunming 650021, China;
| | - Cheng Liu
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
| | - Xuan Hao
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
| | - Chengye Gao
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
| | - Minghua Deng
- Key Laboratory of Vegetable Biology of Yunnan Province, College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, China
| | - Jinfen Wen
- Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming 650021, China; (X.Y.); (J.Z.); (C.L.); (X.H.); (C.G.)
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Yang J, Miao J, Li N, Zhou Z, Dai K, Ji F, Yang M, Tan C, Liu J, Wang H, Tang W. Genetic dissection of cold tolerance at the budding stage of rice in an indica-japonica recombination inbred line population. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108086. [PMID: 37890228 DOI: 10.1016/j.plaphy.2023.108086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/07/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023]
Abstract
Rice is highly cold-sensitive, and thus, the promotion of cold resistance in buds is essential. In this study, we conducted a mapping analysis to identify quantitative trait loci (QTLs) associated with cold tolerance in buds. The analysis was performed using a recombinant inbred line (RIL) population consisting of 192 lines derived from the cold-tolerant strain 02428 and the cold-sensitive strain YZX. Seven additive loci on chromosomes 1, 4, 5, and 6 were identified, of which loci 3 and 7 were found in two crop seasons, indicating stability. Three epistatic interactions, one present over two seasons, were found. Loci 3 and 7 pyramided with two main-effect QTLs observed to control the rate of low-temperature germination in our previous study. Two materials with good cold resistance at the germination and bud stages were obtained, namely, G93 and G146. Transcriptome sequencing analysis of the two parent buds after cold treatment found that genes expressed differentially between the two parents were related to photosynthesis, energy metabolism, and reactive oxygen scavenging. Five candidate genes, namely, Os01g0385400, Os01g0388000, Os06g0287700, Os06g0289200, and Os06g0291100, were selected in the two stable intervals based on gene expression profiles and annotations. These genetic loci exhibit strong potential as targets for breeding cold tolerance in buds and require additional investigation. In conclusion, this work provides valuable genetic resources that can be utilized to improve the cold tolerance of rice.
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Affiliation(s)
- Jing Yang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Jiahao Miao
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Nan Li
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Zixian Zhou
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Kunyan Dai
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Faru Ji
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Min Yang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Chen Tan
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China
| | - Jing Liu
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China.
| | - Hongyang Wang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China.
| | - Wei Tang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming 650500, China.
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Song X, Hou X, Zeng Y, Jia D, Li Q, Gu Y, Miao H. Genome-wide identification and comprehensive analysis of WRKY transcription factor family in safflower during drought stress. Sci Rep 2023; 13:16955. [PMID: 37805641 PMCID: PMC10560227 DOI: 10.1038/s41598-023-44340-y] [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: 05/19/2023] [Accepted: 10/06/2023] [Indexed: 10/09/2023] Open
Abstract
The WRKY family is an important family of transcription factors in plant development and stress response. Currently, there are few reports on the WRKY gene family in safflower (Carthamus tinctorius L.). In this study, a total of 82 CtWRKY genes were identified from the safflower genome and could be classified into 3 major groups and 5 subgroups based on their structural and phylogenetic characteristics. The results of gene structure, conserved domain and motif analyses indicated that CtWRKYs within the same subfamily maintained a consistent exon/intron organization and composition. Chromosomal localization and gene duplication analysis results showed that CtWRKYs were randomly localized on 12 chromosomes and that fragment duplication and purification selection may have played an important role in the evolution of the WRKY gene family in safflower. Promoter cis-acting element analysis revealed that the CtWRKYs contain many abiotic stress response elements and hormone response elements. Transcriptome data and qRT-PCR analyses revealed that the expression of CtWRKYs showed tissue specificity and a strong response to drought stress. Notably, the expression level of the CtWRKY55 gene rapidly increased more than eightfold under drought treatment and rehydration, indicating that it may be a key gene in response to drought stress. These results provide useful insights for investigating the regulatory function of the CtWRKY gene in safflower growth and development, as well as identifying key genes for future molecular breeding programmes.
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Affiliation(s)
- Xianming Song
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science & Technology, Xinjiang University, Urumqi, 830046, China
| | - Xianfei Hou
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Youling Zeng
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science & Technology, Xinjiang University, Urumqi, 830046, China.
| | - Donghai Jia
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
| | - Qiang Li
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
| | - Yuanguo Gu
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Haocui Miao
- Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
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Liu Q, Wang S, Wen J, Chen J, Sun Y, Dong S. Genome-wide identification and analysis of the WRKY gene family and low-temperature stress response in Prunus sibirica. BMC Genomics 2023; 24:358. [PMID: 37370033 DOI: 10.1186/s12864-023-09469-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/20/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND WRKY transcription factors are a prominent gene family in plants, playing a crucial role in various biological processes including development, metabolism, defense, differentiation, and stress response. Although the WRKY gene family has been extensively studied and analysed in numerous plant species, research on Prunus sibirica's WRKY genes (PsWRKY) remains lacking. RESULTS This study analysed the basic physicochemical properties, phylogeny, gene structure, cis-acting elements, and Gene ontology (GO) annotation of PsWRKY gene family members using bioinformatics methods based on the whole-genome data of P. sibirica. In total, 55 WRKYs were identified in P. sibirica and were heterogeneously distributed on eight chromosomes. Based on the phylogenetic analysis, these WRKYs were classified into three major groups: Group I, Group II (II-a, II-b, II-c, II-d, II-e), and Group III. Members of different subfamilies have different cis-acting elements, conserved motifs, and intron-exon structures, indicating functional heterogeneity of the WRKY family. Prediction of subcellular localisation indicated that PsWRKYs were mainly located in the nucleus. Twenty pairs of duplicated genes were identified, and segmental duplication events may play an important role in PsWRKY gene family expansion. Analysis of the Ka/Ks ratio showed that the PsWRKY family's homologous genes were primarily purified by selection. Additionally, GO annotation analysis showed that the WRKY gene family was mainly involved in responses to stimuli, immune system processes, and reproductive processes. Furthermore, quantitative real-time PCR (qRT-PCR) analysis showed that 23 PsWRKYs were highly expressed in one or more tissues (pistils and roots) and PsWRKYs showed specific expression patterns under different low-temperature stress conditions. CONCLUSIONS Our results provide a scientific basis for the further exploration and functional validation of WRKYs in P. sibirica.
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Affiliation(s)
- Quangang Liu
- College of Forestry, Shenyang Agricultural University, Shenyang, China
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China
| | - Shipeng Wang
- College of Forestry, Shenyang Agricultural University, Shenyang, China
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China
| | - Jiaxing Wen
- College of Forestry, Shenyang Agricultural University, Shenyang, China
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China
| | - Jianhua Chen
- College of Forestry, Shenyang Agricultural University, Shenyang, China
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China
| | - Yongqiang Sun
- College of Forestry, Shenyang Agricultural University, Shenyang, China
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China
| | - Shengjun Dong
- College of Forestry, Shenyang Agricultural University, Shenyang, China.
- Key Laboratory for Silviculture of Liaoning Province, Shenyang Agricultural University, Shenyang, China.
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7
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Islam F, Khan MSS, Ahmed S, Abdullah M, Hannan F, Chen J. OsLPXC negatively regulates tolerance to cold stress via modulating oxidative stress, antioxidant defense and JA accumulation in rice. Free Radic Biol Med 2023; 199:2-16. [PMID: 36775108 DOI: 10.1016/j.freeradbiomed.2023.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/28/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Exposure of crops to low temperature (LT) during emerging and reproductive stages influences their growth and development. In this study, we have isolated a cold induced, nucleus-localized lipid A gene from rice named OsLPXC, which encodes a protein of 321 amino acids. Knockout of OsLPXC resulted in enhance sensitivity to LT stress in rice, with increased accumulation of reactive oxygen species (ROS), malondialdehyde and electrolyte leakage, while expression and activities of antioxidant enzymes were significantly suppressed. The accumulation of chlorophyll content and net photosynthetic rate of knockout plants were also decreased compared with WT under LT stress. The functional analysis of differentially expressed genes (DEGs), showed that numerous genes associated with antioxidant defense, photosynthesis, cold signaling were solely expressed and downregulated in oslpxc plants compared with WT under LT. The accumulation of methyl jasmonate (MeJA) in leave and several DEGs related to the jasmonate biosynthesis pathway were significantly downregulated in OsLPXC knockout plants, which showed differential levels of MeJA regulation in WT and knockout plants in response to cold stress. These results indicated that OsLPXC positively regulates cold tolerance in rice via stabilizing the expression and activities of ROS scavenging enzymes, photosynthetic apparatus, cold signaling genes, and jasmonate biosynthesis.
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Affiliation(s)
- Faisal Islam
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China
| | | | - Sulaiman Ahmed
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China
| | - Muhammad Abdullah
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China
| | - Fakhir Hannan
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jian Chen
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
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The WRKY Transcription Factor OsWRKY54 Is Involved in Salt Tolerance in Rice. Int J Mol Sci 2022; 23:ijms231911999. [PMID: 36233306 PMCID: PMC9569829 DOI: 10.3390/ijms231911999] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/02/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
Salt stress is a critical limiting factor for rice growth and production. Although numerous salt-tolerant genes have been identified, the mechanism underlying salt stress tolerance in rice remains unclear. This study reports the need for an uncharacterized WRKY transcription factor OsWRKY54 for rice salt-tolerance. Salt stress resulted in a rapid induction of OsWRKY54 expression in roots. Immunostaining analysis showed that it was mainly expressed in the stele. The loss of OsWRKY54 resulted in greater Na accumulation in shoots and enhanced sensitivity of rice plants to salt stress. The real-time quantitative PCR (qRT-PCR) and transcriptome analysis revealed that OsWRKY54 regulated the expression of some essential genes related to salt tolerance, such as OsNHX4 and OsHKT1;5. Furthermore, OsWRKY54 was found to regulate OsHKT1;5 expression by directly binding to the W-box motif in its promoter. Thus, these results indicated that OsWRKY54 was a critical regulatory factor in salt tolerance in rice.
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Guo Z, Yao J, Cheng Y, Zhang W, Xu Z, Li M, Huang J, Ma D, Zhao M. Identification of QTL under Brassinosteroid-Combined Cold Treatment at Seedling Stage in Rice Using Genotyping-by-Sequencing (GBS). PLANTS (BASEL, SWITZERLAND) 2022; 11:2324. [PMID: 36079705 PMCID: PMC9460439 DOI: 10.3390/plants11172324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/21/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Cold stress is a major threat to the sustainability of rice yield. Brassinosteroids (BR) application can enhance cold tolerance in rice. However, the regulatory mechanism related to cold tolerance and the BR signaling pathway in rice has not been clarified. In the current study, the seedling shoot length (SSL), seedling root length (SRL), seedling dry weight (SDW), and seedling wet weight (SWW) were used as the indices for identifying cold tolerance under cold stress and BR-combined cold treatment in a backcross recombinant inbred lines (BRIL) population. According to the phenotypic characterization for cold tolerance and a high-resolution SNP genetic map obtained from the GBS technique, a total of 114 QTLs were identified, of which 27 QTLs were detected under cold stress and 87 QTLs under BR-combined cold treatment. Among them, the intervals of many QTLs were coincident under different treatments, as well as different traits. A total of 13 candidate genes associated with cold tolerance or BR pathway, such as BRASSINAZOLE RESISTANT1 (OsBZR1), OsWRKY77, AP2 domain-containing protein, zinc finger proteins, basic helix-loop-helix (bHLH) protein, and auxin-induced protein, were predicted. Among these, the expression levels of 10 candidate genes were identified under different treatments in the parents and representative BRIL individuals. These results were helpful in understanding the regulation relationship between cold tolerance and BR pathway in rice.
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Affiliation(s)
- Zhifu Guo
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Biosciences and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
| | - Jialu Yao
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Biosciences and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
| | - Yishan Cheng
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Biosciences and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
| | - Wenzhong Zhang
- Rice Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhengjin Xu
- Rice Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Maomao Li
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
| | - Jing Huang
- Department of Agronomy, College of Agriculture, Purdue University, West Lafayette, IN 47907, USA
| | - Dianrong Ma
- Rice Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Minghui Zhao
- Rice Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
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Zhu Z, Wang T, Lan J, Ma J, Xu H, Yang Z, Guo Y, Chen Y, Zhang J, Dou S, Yang M, Li L, Liu G. Rice MPK17 Plays a Negative Role in the Xa21-Mediated Resistance Against Xanthomonas oryzae pv. oryzae. RICE (NEW YORK, N.Y.) 2022; 15:41. [PMID: 35920921 PMCID: PMC9349333 DOI: 10.1186/s12284-022-00590-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Rice bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the most serious diseases affecting rice production worldwide. Xa21 was the first disease resistance gene cloned in rice, which encodes a receptor kinase and confers broad resistance against Xoo stains. Dozens of components in the Xa21-mediated pathway have been identified in the past decades, however, the involvement of mitogen-activated protein kinase (MAPK) genes in the pathway has not been well described. To identify MAPK involved in Xa21-mediated resistance, the level of MAPK proteins was profiled using Western blot analysis. The abundance of OsMPK17 (MPK17) was found decreased during the rice-Xoo interaction in the background of Xa21. To investigate the function of MPK17, MPK17-RNAi and over-expression (OX) transgenic lines were generated. The RNAi lines showed an enhanced resistance, while OX lines had impaired resistance against Xoo, indicating that MPK17 plays negative role in Xa21-mediated resistance. Furthermore, the abundance of transcription factor WRKY62 and pathogenesis-related proteins PR1A were changed in the MPK17 transgenic lines when inoculated with Xoo. We also observed that the MPK17-RNAi and -OX rice plants showed altered agronomic traits, indicating that MPK17 also plays roles in the growth and development. On the basis of the current study and published results, we propose a "Xa21-MPK17-WRKY62-PR1A" signaling that functions in the Xa21-mediated disease resistance pathway. The identification of MPK17 advances our understanding of the mechanism underlying Xa21-mediated immunity, specifically in the mid- and late-stages.
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Affiliation(s)
- Zheng Zhu
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Tianxingzi Wang
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Jinping Lan
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Research Center for Life Sciences, Hebei North University, Zhangjiakou, 075000, Hebei, China
| | - Jinjiao Ma
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Haiqing Xu
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Zexi Yang
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Yalu Guo
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518116, Guangdong, China
| | - Yue Chen
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Jianshuo Zhang
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Shijuan Dou
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Ming Yang
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China
| | - Liyun Li
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China.
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China.
| | - Guozhen Liu
- College of Life Sciences, Hebei Agricultural University, 2596 Lekai South Street, West Campus, Baoding, 071001, Hebei, China.
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, 071001, China.
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Genome-Wide Identification and Analysis of the WRKY Gene Family and Cold Stress Response in Acer truncatum. Genes (Basel) 2021; 12:genes12121867. [PMID: 34946815 PMCID: PMC8701280 DOI: 10.3390/genes12121867] [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: 10/18/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 11/17/2022] Open
Abstract
WRKY transcription factors constitute one of the largest gene families in plants and are involved in many biological processes, including growth and development, physiological metabolism, and the stress response. In earlier studies, the WRKY gene family of proteins has been extensively studied and analyzed in many plant species. However, information on WRKY transcription factors in Acer truncatum has not been reported. In this study, we conducted genome-wide identification and analysis of the WRKY gene family in A. truncatum, 54 WRKY genes were unevenly located on all 13 chromosomes of A. truncatum, the highest number was found in chromosomes 5. Phylogenetic relationships, gene structure, and conserved motif identification were constructed, and the results affirmed 54 AtruWRKY genes were divided into nine subgroup groups. Tissue species analysis of AtruWRKY genes revealed which were differently exhibited upregulation in flower, leaf, root, seed and stem, and the upregulation number were 23, 14, 34, 18, and 8, respectively. In addition, the WRKY genes expression in leaf under cold stress showed that more genes were significantly expressed under 0, 6 and 12 h cold stress. The results of this study provide a new insight the regulatory function of WRKY genes under abiotic and biotic stresses.
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12
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Hu YB, Sperotto RA. Regulatory hubs in plant stress adaptation. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23 Suppl 1:3-6. [PMID: 34038601 DOI: 10.1111/plb.13263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 05/11/2023]
Affiliation(s)
- Y B Hu
- Northeast Forestry University, Harbin City, China
| | - R A Sperotto
- University of Taquari Valley - Univates, Lajeado, Brazil
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