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Gelaw TA, Sanan-Mishra N. Molecular priming with H 2O 2 and proline triggers antioxidant enzyme signals in maize seedlings during drought stress. Biochim Biophys Acta Gen Subj 2024; 1868:130633. [PMID: 38762030 DOI: 10.1016/j.bbagen.2024.130633] [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: 11/30/2023] [Revised: 04/25/2024] [Accepted: 05/15/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND Drought and water stress impose major limitations to crops, including Maize, as they affect the plant biology at multiple levels. Drought activates the cellular signalling machinery to maintain the osmotic and ROS homeostasis for controlling plant response and adaptation to stress. Molecular priming of seeds plays a significant role in imparting stress tolerance by helping plants to remember the stress, which improves their response when they encounter stress again. METHODS In this study, we examined the effect of priming maize seeds with H2O2 and proline, individually or in combination, on response to drought stress. We investigated the role of molecular priming on the physiological, biochemical and molecular response of maize seedlings during drought stress. RESULTS We observed that seed-priming played a significant role in mediating stress tolerance of seedlings under drought stress as indicated by changes in growth, biochemical properties, pigment and osmolyte accumulation, antioxidant enzyme activities, gas exchange parameters and gene expression. Seed-priming resulted in reduced expression of specific miRNAs to increase target transcripts associated with synthesis of osmolytes and maintenance of ROS homeostasis for reducing potential damage to the cellular components. CONCLUSIONS Seed-priming induced changes in the growth, biochemical properties, pigment and osmolyte accumulation, antioxidant enzyme activities, gas exchange parameters and gene expression, though the response was dependent on the genotype, as well as concentration and combination of the priming agents.
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Affiliation(s)
- Temesgen Assefa Gelaw
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, 110067 New Delhi, India; Department of Biotechnology, College of Agriculture and Natural Resource Sciences, Debre Birhan University, 445 Debre Birhan, Ethiopia
| | - Neeti Sanan-Mishra
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, 110067 New Delhi, India.
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Liu Z, Xu R, Fan Y, Dong W, Han Y, Xie Q, Li J, Liu B, Wang C, Wang Y, Fu Y, Gao C. Bp-miR408a participates in osmotic and salt stress responses by regulating BpBCP1 in Betula platyphylla. TREE PHYSIOLOGY 2024; 44:tpad159. [PMID: 38145489 DOI: 10.1093/treephys/tpad159] [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: 07/10/2023] [Accepted: 12/12/2023] [Indexed: 12/27/2023]
Abstract
The microRNAs, which are small RNAs of 18-25 nt in length, act as key regulatory factors in posttranscriptional gene expression during plant growth and development. However, little is known about their regulatory roles in response to stressful environments in birch (Betula platyphylla). Here, we characterized and further explored miRNAs from osmotic- and salt-stressed birch. Our analysis revealed a total of 190 microRNA (miRNA) sequences, which were classified into 180 conserved miRNAs and 10 predicted novel miRNAs based on sequence homology. Furthermore, we identified Bp-miR408a under osmotic and salt stress and elucidated its role in osmotic and salt stress responses in birch. Notably, under osmotic and salt stress, Bp-miR408a contributed to osmotic and salt tolerance sensitivity by mediating various physiological changes, such as increases in reactive oxygen species accumulation, osmoregulatory substance contents and Na+ accumulation. Additionally, molecular analysis provided evidence of the in vivo targeting of BpBCP1 (blue copper protein) transcripts by Bp-miR408a. The overexpression of BpBCP1 in birch enhanced osmotic and salt tolerance by increasing the antioxidant enzyme activity, maintaining cellular ion homeostasis and decreasing lipid peroxidation and cell death. Thus, we reveal a Bp-miR408a-BpBCP1 regulatory module that mediates osmotic and salt stress responses in birch.
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Affiliation(s)
- Zhongyuan Liu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
- Key Laboratory of Forestry Plant Ecology, Ministry of Education (Northeast Forestry University), Harbin 150040, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization (Northeast Forestry University), Harbin 150040, PR China
| | - Ruiting Xu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Yingbo Fan
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Wenfang Dong
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Yating Han
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Qingjun Xie
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Jinghang Li
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Baichao Liu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Chao Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Yucheng Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
| | - Yujie Fu
- Key Laboratory of Forestry Plant Ecology, Ministry of Education (Northeast Forestry University), Harbin 150040, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization (Northeast Forestry University), Harbin 150040, PR China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, PR China
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Fan K, Wang Z, Sze CC, Niu Y, Wong FL, Li MW, Lam HM. MicroRNA 4407 modulates nodulation in soybean by repressing a root-specific ISOPENTENYLTRANSFERASE (GmIPT3). THE NEW PHYTOLOGIST 2023; 240:1034-1051. [PMID: 37653681 DOI: 10.1111/nph.19222] [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: 12/13/2022] [Accepted: 07/28/2023] [Indexed: 09/02/2023]
Abstract
MicroRNAs (miRNAs) are important regulators of plant biological processes, including soybean nodulation. One miRNA, miR4407, was identified in soybean roots and nodules. However, the function of miR4407 in soybean is still unknown. MiR4407, unique to soybean, positively regulates lateral root emergence and root structures and represses a root-specific ISOPENTENYLTRANSFERASE (GmIPT3). By altering the expression of miR4407 and GmIPT3, we investigated the role of miR4407 in lateral root and nodule development. Both miR4407 and GmIPT3 are expressed in the inner root cortex and nodule primordia. Upon rhizobial inoculation, miR4407 was downregulated while GmIPT3 was upregulated. Overexpressing miR4407 reduced the number of nodules in transgenic soybean hairy roots while overexpressing the wild-type GmIPT3 or a miR4407-resistant GmIPT3 mutant (mGmIPT3) significantly increased the nodule number. The mechanism of miR4407 and GmIPT3 functions was also linked to autoregulation of nodulation (AON), where miR4407 overexpression repressed miR172c and activated its target, GmNNC1, turning on AON. Exogenous CK mimicked the effects of GmIPT3 overexpression on miR172c, supporting the notion that GmIPT3 regulates nodulation by enhancing root-derived CK. Overall, our data revealed a new miRNA-mediated regulatory mechanism of nodulation in soybean. MiR4407 showed a dual role in lateral root and nodule development.
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Affiliation(s)
- Kejing Fan
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Zhili Wang
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Ching-Ching Sze
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Yongchao Niu
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Fuk-Ling Wong
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Man-Wah Li
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Hon-Ming Lam
- School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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Balyan S, Kansal S, Jajo R, Behere PR, Chatterjee R, Raghuvanshi S. Delineating the tissue-mediated drought stress governed tuning of conserved miR408 and its targets in rice. Funct Integr Genomics 2023; 23:187. [PMID: 37243818 DOI: 10.1007/s10142-023-01111-2] [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: 12/30/2022] [Revised: 05/13/2023] [Accepted: 05/16/2023] [Indexed: 05/29/2023]
Abstract
Engineering drought tolerance in rice needs to focus on regulators that enhance tolerance while boosting plant growth and vigor. The present study delineated the concealed function and tissue-mediated interplay of the miR408/target module in imparting drought stress tolerance in rice. The plant miR408 family comprises three dominant mature forms (21 nt), including a distinct monocot variant (F-7 with 5' C) and is divided into six groups. miR408 majorly cleaves genes belonging to the blue copper protein in addition to several other species-specific targets in plants. Comparative sequence analysis in 4726 rice accessions identified 22 sequence variants (SNP and InDELs) in its promoter (15) and pre-miR408 region. Haplotype analysis of the sequence variants indicated eight haplotypes (three: Japonica-specific and five: Indica-specific) of the miR408 promoter. In drought-tolerant Nagina 22, miR408 follows flag leaf preferential expression. Under drought conditions, its levels are upregulated in flag leaf and roots which seems to be regulated by a differential fraction of methylated cytosines (mCs) in the precursor region. The active pool of miR408 regulated targets under control and drought conditions is impacted by the tissue type. Comparative expression analysis of the miR408/target module under different sets of conditions features 83 targets exhibiting antagonistic expression in rice, out of which 12 genes, including four PLANTACYANINS (OsUCL6, 7, 9 and 30), PIRIN, OsLPR1, OsCHUP1, OsDOF12, OsBGLU1, glycine-rich cell wall gene, OsDUT, and OsERF7, are among the high confidence targets. Further, overexpression of MIR408 in drought-sensitive rice cultivar (PB1) leads to the massive enhancement of vegetative growth in rice with improved ETR and Y(II) and enhanced dehydration stress tolerance. The above results suggest that miR408 is likely to act as a positive regulator of growth and vigor, as well as dehydration stress, making it a potential candidate for engineering drought tolerance in rice.
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Affiliation(s)
- Sonia Balyan
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Shivani Kansal
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Ringyao Jajo
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Pratyush Rajiv Behere
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Rishika Chatterjee
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Saurabh Raghuvanshi
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India.
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Bai Y, Ali S, Liu S, Zhou J, Tang Y. Characterization of plant laccase genes and their functions. Gene 2023; 852:147060. [PMID: 36423777 DOI: 10.1016/j.gene.2022.147060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
Laccase is a copper-containing polyphenol oxidase found in different organisms. The multigene family that encodes laccases is widely distributed in plant genomes. Plant laccases oxidize monolignols to produce lignin which is important for plant growth and stress responses. Industrial applications of fungal and bacterial laccases are extensively explored and addressed. Recently many studies have focused on the significance of plant laccase, particularly in crop yield, and its functions in different environmental conditions. This review summarizes the transcriptional and posttranscriptional regulation of plant laccase genes and their functions in plant growth and development. It especially describes the responses of laccase genes to various stresses and their contributions to plant biotic and abiotic stress resistance. In-depth explanations and scientific advances will serve as foundations for research into plant laccase genes' function, mechanism, and possible applications.
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Affiliation(s)
- Yongsheng Bai
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Shahid Ali
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuai Liu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi 710003, China
| | - Jiajie Zhou
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Yulin Tang
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China.
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Gillani SFA, Zhuang Z, Rasheed A, Haq IU, Abbasi A, Ahmed S, Wang Y, Khan MT, Sardar R, Peng Y. Brassinosteroids induced drought resistance of contrasting drought-responsive genotypes of maize at physiological and transcriptomic levels. FRONTIERS IN PLANT SCIENCE 2022; 13:961680. [PMID: 36388543 PMCID: PMC9641234 DOI: 10.3389/fpls.2022.961680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
The present study investigated the brassinosteroid-induced drought resistance of contrasting drought-responsive maize genotypes at physiological and transcriptomic levels. The brassinosteroid (BR) contents along with different morphology characteristics, viz., plant height (PH), shoot dry weight (SDW), root dry weight (RDW), number of leaves (NL), the specific mass of the fourth leaf, and antioxidant activities, were investigated in two maize lines that differed in their degree of drought tolerance. In response to either control, drought, or brassinosteroid treatments, the KEGG enrichment analysis showed that plant hormonal signal transduction and starch and sucrose metabolism were augmented in both lines. In contrast, the phenylpropanoid biosynthesis was augmented in lines H21L0R1 and 478. Our results demonstrate drought-responsive molecular mechanisms and provide valuable information regarding candidate gene resources for drought improvement in maize crop. The differences observed for BR content among the maize lines were correlated with their degree of drought tolerance, as the highly tolerant genotype showed higher BR content under drought stress.
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Affiliation(s)
| | - Zelong Zhuang
- Gansu Provincial Key Lab of Arid Land Crop Science, College of Agronomy, Lanzhou, China
| | - Adnan Rasheed
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Crop Breeding Department, Jilin Changfa Modern Agricultural Science and Technology Group, co., Ltd., Changchun, China
| | - Inzamam Ul Haq
- College of Plant Protection, Gansu Agricultural University, Lanzhou, China
| | - Asim Abbasi
- Department of Environmental Sciences, Kohsar University, Murree, Pakistan
| | - Shakil Ahmed
- Institute of Botany, University of the Punjab, Lahore, Pakistan
| | - Yinxia Wang
- Gansu Provincial Key Lab of Arid Land Crop Science, College of Agronomy, Lanzhou, China
| | - Muhammad Tajammal Khan
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Rehana Sardar
- Institute of Botany, University of the Punjab, Lahore, Pakistan
| | - Yunling Peng
- Gansu Provincial Key Lab of Arid Land Crop Science, College of Agronomy, Lanzhou, China
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7
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He Z, Liu C, Zhang Z, Wang R, Chen Y. Integration of mRNA and miRNA analysis reveals the differentially regulatory network in two different Camellia oleifera cultivars under drought stress. FRONTIERS IN PLANT SCIENCE 2022; 13:1001357. [PMID: 36247533 PMCID: PMC9562160 DOI: 10.3389/fpls.2022.1001357] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
Camellia oleifera Abel. (C. oleifera) is an edible oil tree species that provide an important guarantee for targeted poverty alleviation strategy in China. Severe difficulties in irrigation leading to drought stress have become a major obstacle to the development of the C. oleifera planting industry. Breeding of drought-tolerant cultivars is the main idea for solving the problem of water shortage stress in C. oleifera cultivation. The photosynthetic physiology traits of C. oleifera cultivars 'Xianglin No.1' and 'Hengdong No.2' were affected by drought stress to different degrees, which demonstrated that the two cultivars suffered different degrees of damage. In the present study, we applied mRNA-seq and miRNA-seq to analyze the difference in molecular responses between drought stress and control, drought-tolerant and -sensitive cultivars, at mRNA and miRNA levels. The differentially expressed genes (DEGs) involved in photosynthesis-related, porphyrin, and chlorophyll metabolism, circadian rhythm system, and plant hormone signal transduction pathways were identified that might be candidates for drought stress tolerance genes. Subsequently, the miRNA-mRNA regulatory networks connected the differentially expressed miRNAs (DEMs) to their predicted target genes were established. miR398 and miR408-3p in C. oleifera showed that associated with the response to drought stress by negatively regulating genes encoding Downy Mildew Resistance 6 (DMR6) and Enhanced Disease Resistance 2 (EDR2), respectively, which might further improve drought tolerance via crosstalk between different stress-responsive pathways. The quantitation results of miRNA and mRNA were validated by quantitative real-time PCR (qRT-PCR). In summary, the integrated mRNA-seq and miRNA-seq analysis deepen our understanding of the regulatory network response to drought stress and variety-specific responses improving drought tolerance in C. oleifera.
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Affiliation(s)
- Zhilong He
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- National Engineering Research Center for Oil Tea Camellia, Changsha, China
| | - Caixia Liu
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- National Engineering Research Center for Oil Tea Camellia, Changsha, China
| | - Zhen Zhang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- National Engineering Research Center for Oil Tea Camellia, Changsha, China
| | - Rui Wang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- National Engineering Research Center for Oil Tea Camellia, Changsha, China
| | - Yongzhong Chen
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- National Engineering Research Center for Oil Tea Camellia, Changsha, China
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Siddiqui MH, Khan MN, Singh VP. Hot and dry: how plants can thrive in future climates. PLANT CELL REPORTS 2022; 41:497-499. [PMID: 35175359 DOI: 10.1007/s00299-022-02843-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Affiliation(s)
- Manzer H Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - M Nasir Khan
- Department of Biology, College of Haql, University of Tabuk, Tabuk, Saudi Arabia
| | - Vijay Pratap Singh
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India
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