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Zhang H, Wu J, Fu D, Zhang M, Wang L, Gong M. Prokaryotic expression, purification, and the in vitro and in vivo protection study of dehydrin WDHN2 from Triticum aestivum. PROTOPLASMA 2024; 261:771-781. [PMID: 38342804 DOI: 10.1007/s00709-024-01933-2] [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: 08/19/2023] [Accepted: 01/28/2024] [Indexed: 02/13/2024]
Abstract
Dehydrins proteins accumulate and play important protective roles in most plants during abiotic stresses. The objective of this study was to characterize a YSK2-type dehydrin gene, WDHN2, isolated from Triticum aestivum previously. In this work, wheat dehydrin WDHN2 was expressed in Escherichia coli and purified by immobilized metal affinity chromatography, which exhibited as a single band by sodium dodecyl sulfonate polyacrylamide gel electrophoresis and western blotting. We show that WDHN2 is capable of alleviating lactate dehydrogenase inactivation from heat and desiccation in vitro enzyme activity protection assay. In vivo assay of Escherichia coli viability demonstrates the enhancement of cell survival by the overexpression of WDHN2. The protein aggregation prevention assay explores that WDHN2 has a broad protective effect on the cellular proteome. The results show that WDHN2 is mainly accumulated in the nucleus and cytosol, suggesting that this dehydrin may exert its function in both cellular compartments. Our data suggest that WDHN2 acts as a chaperone molecular in vivo.
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Affiliation(s)
- Hongmei Zhang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
- Key Laboratory of Microbial Resources Exploitation and Utilization, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Jiafa Wu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
- Key Laboratory of Microbial Resources Exploitation and Utilization, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Dandan Fu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Min Zhang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Lunji Wang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Minggui Gong
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China.
- Key Laboratory of Microbial Resources Exploitation and Utilization, Henan University of Science and Technology, Luoyang, 471023, Henan, China.
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Han H, Wu W, Hou H, Zhang M, Guo A, Zhou Y, Liu J, Li K, Bai S, Li B, Li Z, Guo S, Wang P. Function analysis of transcription factor OSR1 regulating osmotic stress resistance in maize. Biochem Biophys Res Commun 2024; 714:149956. [PMID: 38663095 DOI: 10.1016/j.bbrc.2024.149956] [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: 01/20/2024] [Revised: 04/05/2024] [Accepted: 04/15/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Maize is a major cereal crop world widely, however, the yield of maize is frequently limited by dehydration and even death of plants, which resulted from osmotic stress such as drought and salinity. Dissection of molecular mechanisms controlling stress tolerance will enable plant scientists and breeders to increase crops yield by manipulating key regulatory components. METHODS The candidate OSR1 gene was identified by map-based cloning. The expression level of OSR1 was verified by qRT-PCR and digital PCR in WT and osr1 mutant. Electrophoretic mobility shift assay, transactivation activity assay, subcellular localization, transcriptome analysis and physiological characters measurements were conducted to analyze the function of OSR1 in osmotic stress resistance in maize. RESULTS The osr1 mutant was significantly less sensitive to osmotic stress than the WT plants and displayed stronger water-holding capacity, and the OSR1 homologous mutant in Arabidopsis showed a phenotype similar with maize osr1 mutant. Differentially expressed genes (DEGs) were identified between WT and osr1 under osmotic stress by transcriptome analysis, the expression levels of many genes, such as LEA, auxin-related factors, PPR family members, and TPR family members, changed notably, which may primarily involve in osmotic stress or promote root development. CONCLUSIONS OSR1 may serve as a negative regulatory factor in response to osmotic stress in maize. The present study sheds new light on the molecular mechanisms of osmotic stress in maize.
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Affiliation(s)
- Hongpeng Han
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China; School of Physical Education and Health Management, Henan Finance University, Zhengzhou, 450046, Henan, PR China
| | - Wenqiang Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Huijiao Hou
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Mingli Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Aiyu Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Yusen Zhou
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Jiong Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Kaiwen Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Shenglong Bai
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Baozhu Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Zhi Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Siyi Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Pengtao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China.
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Yu X, Zhao Y, Wang Y, Zou Z, Li F. Maize ZmHSP90 plays a role in acclimation to salt stress. PeerJ 2023; 11:e15819. [PMID: 37810777 PMCID: PMC10557940 DOI: 10.7717/peerj.15819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 07/10/2023] [Indexed: 10/10/2023] Open
Abstract
Background Maize is sensitive to salt stress, especially during the germination and seedling stages. Methods We conducted germination experiments on 60 maize materials under salt stress, and screened out the most salt-tolerant and salt-sensitive varieties based on germination indicators. Afterwards, transcriptome analysis was performed to screen for key regulators in the plumule and flag leaf at the germination and seedling stages, respectively. Following that, transgenic tobacco was developed to expose the roles and mechanisms of the candidate genes, enabling a deeper investigation of their functions. Results Out of the 60 inbred lines of maize, "975-12" exhibits the highest level of salt tolerance, while "GEMS64" displays the lowest. The application of salt stress resulted in a significant increase in the levels of antioxidant enzymes in both "975-12" and "GEMS64". ABA signal transduction and jasmonic acid pathways were the pathways that mainly affected by salt stress. In addition, a significant finding has been made indicating that when exposed to high levels of salt stress, the expression of ZmHSP90 in '975-12' increased while in 'GEMS64' decreased. Furthermore, in tobacco plants overexpressing ZmHSP90, there was an increase in antioxidant enzyme activity associated with salt tolerance. ZmHSP90 enhanced the expression levels of NtSOS1, NtHKT1, and NtNHX1 as compared to those in the salt treatment, causing the maintenance of Na+ and K+ homeostasis, suggesting that high expression of ZmHSP90 was conducive to regulate Na+ transporters to maintain K+/Na+ balanced in tobacco.
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Affiliation(s)
- Xinyan Yu
- Shenyang Agricultural University, Shenyang, China
- Win-all High-Tech Seed Company Limited, Hefei, China
| | - Yanxin Zhao
- Maize Research Center of Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing, China
| | - Yun Wang
- Shenyang Agricultural University, Shenyang, China
| | - Zhiqing Zou
- Win-all High-Tech Seed Company Limited, Hefei, China
| | - Fenghai Li
- Shenyang Agricultural University, Shenyang, China
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Sustek-Sánchez F, Rognli OA, Rostoks N, Sõmera M, Jaškūnė K, Kovi MR, Statkevičiūtė G, Sarmiento C. Improving abiotic stress tolerance of forage grasses - prospects of using genome editing. FRONTIERS IN PLANT SCIENCE 2023; 14:1127532. [PMID: 36824201 PMCID: PMC9941169 DOI: 10.3389/fpls.2023.1127532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Due to an increase in the consumption of food, feed, and fuel and to meet global food security needs for the rapidly growing human population, there is a necessity to obtain high-yielding crops that can adapt to future climate changes. Currently, the main feed source used for ruminant livestock production is forage grasses. In temperate climate zones, perennial grasses grown for feed are widely distributed and tend to suffer under unfavorable environmental conditions. Genome editing has been shown to be an effective tool for the development of abiotic stress-resistant plants. The highly versatile CRISPR-Cas system enables increasingly complex modifications in genomes while maintaining precision and low off-target frequency mutations. In this review, we provide an overview of forage grass species that have been subjected to genome editing. We offer a perspective view on the generation of plants resilient to abiotic stresses. Due to the broad factors contributing to these stresses the review focuses on drought, salt, heat, and cold stresses. The application of new genomic techniques (e.g., CRISPR-Cas) allows addressing several challenges caused by climate change and abiotic stresses for developing forage grass cultivars with improved adaptation to the future climatic conditions. Genome editing will contribute towards developing safe and sustainable food systems.
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Affiliation(s)
- Ferenz Sustek-Sánchez
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Odd Arne Rognli
- Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Nils Rostoks
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Latvia, Riga, Latvia
| | - Merike Sõmera
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Kristina Jaškūnė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, Lithuania
| | - Mallikarjuna Rao Kovi
- Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Gražina Statkevičiūtė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, Lithuania
| | - Cecilia Sarmiento
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
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Genome-wide study and functional characterization elucidates the potential association of late embryogenesis abundant (LEA) genes with lotus seed development. Int J Biol Macromol 2023; 226:1-13. [PMID: 36481329 DOI: 10.1016/j.ijbiomac.2022.11.301] [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: 09/24/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022]
Abstract
Late embryogenesis abundant (LEA) proteins are extremely hydrophilic proteins imperatively associated with plant growth and development, as well as cell protection from abiotic stress. However, the genome-wide characterization of LEA gene family remains limited, especially in aquatic species such as lotus (Nelumbo spp.). Here, 57 putative LEA genes, including 28 NnLEAs and 29 NlLEAs were identified in the N.nucifera and N.lutea genomes, respectively. A total of 27 homologous LEA gene pairs were identified, indicating high degree of sequence homologies between the two Nelumbo species. Secondary structure prediction indicated high prevalence of alpha (α) helix structure among LEA proteins in the LEA_1, LEA_4, and SMP groups. Screening of putative promoter cis-elements revealed that NnLEA genes were involved in diverse biological processes. Most NnLEA genes were predominantly expressed in the late cotyledons and plumules development stages, suggesting their potential vital roles in lotus seed maturation. In addition, genes co-expressed with NnLEAs were involved in ABA signaling, seed maturation, and development processes. Overall, this study provides new insights for the in-depth understanding of the functions of NnLEA proteins in lotus seed development, and could act as a useful reference for the molecular breeding of seeds with prolonged lifespan.
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Overexpression of ZmDHN15 Enhances Cold Tolerance in Yeast and Arabidopsis. Int J Mol Sci 2022; 24:ijms24010480. [PMID: 36613921 PMCID: PMC9820458 DOI: 10.3390/ijms24010480] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/12/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022] Open
Abstract
Maize (Zea mays L.) originates from the subtropical region and is a warm-loving crop affected by low-temperature stress. Dehydrin (DHN) protein, a member of the Group 2 LEA (late embryogenesis abundant proteins) family, plays an important role in plant abiotic stress. In this study, five maize DHN genes were screened based on the previous transcriptome sequencing data in our laboratory, and we performed sequence analysis and promoter analysis on these five DHN genes. The results showed that the promoter region has many cis-acting elements related to cold stress. The significantly upregulated ZmDHN15 gene has been further screened by expression pattern analysis. The subcellular localization results show that ZmDHN15 fusion protein is localized in the cytoplasm. To verify the role of ZmDHN15 in cold stress, we overexpressed ZmDHN15 in yeast and Arabidopsis. We found that the expression of ZmDHN15 can significantly improve the cold resistance of yeast. Under cold stress, ZmDHN15-overexpressing Arabidopsis showed lower MDA content, lower relative electrolyte leakage, and less ROS (reactive oxygen species) when compared to wild-type plants, as well as higher seed germination rate, seedling survival rate, and chlorophyll content. Furthermore, analysis of the expression patterns of ROS-associated marker genes and cold-response-related genes indicated that ZmDHN15 genes play an important role in the expression of these genes. In conclusion, the overexpression of the ZmDHN15 gene can effectively improve the tolerance to cold stress in yeast and Arabidopsis. This study is important for maize germplasm innovation and the genetic improvement of crops.
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Wang G, Gao G, Yang X, Yang X, Ma P. Casein kinase CK2 structure and activities in plants. JOURNAL OF PLANT PHYSIOLOGY 2022; 276:153767. [PMID: 35841742 DOI: 10.1016/j.jplph.2022.153767] [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: 04/26/2022] [Revised: 07/10/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
Casein kinase CK2 is a highly conserved serine/threonine protein kinase and exists in all eukaryotes. It has been demonstrated to be widely involved in the biological processes of plants. The CK2 holoenzyme is a heterotetramer consisting of two catalytic subunits (α and/or α') and two regulatory subunits (β). CK2 in plants is generally encoded by multiple genes, with monomeric and oligomeric forms present in the tissue. Various subunit genes of CK2 have been cloned and characterized from Arabidopsis thaliana, tobacco, maize, wheat, tomato, and other plants. This paper reviews the structural features of CK2, provides a clear classification of its physiological functions and mechanisms of action, and elaborates on the regulation of CK2 activity to provide a knowledge base for subsequent studies of CK2 in plants.
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Affiliation(s)
- Guanfeng Wang
- College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Geling Gao
- College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Xiangna Yang
- College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Xiangdong Yang
- Institute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China.
| | - Pengda Ma
- College of Life Sciences, Northwest A&F University, Yangling, 712100, China.
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Satyakam, Zinta G, Singh RK, Kumar R. Cold adaptation strategies in plants—An emerging role of epigenetics and antifreeze proteins to engineer cold resilient plants. Front Genet 2022; 13:909007. [PMID: 36092945 PMCID: PMC9459425 DOI: 10.3389/fgene.2022.909007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
Cold stress adversely affects plant growth, development, and yield. Also, the spatial and geographical distribution of plant species is influenced by low temperatures. Cold stress includes chilling and/or freezing temperatures, which trigger entirely different plant responses. Freezing tolerance is acquired via the cold acclimation process, which involves prior exposure to non-lethal low temperatures followed by profound alterations in cell membrane rigidity, transcriptome, compatible solutes, pigments and cold-responsive proteins such as antifreeze proteins. Moreover, epigenetic mechanisms such as DNA methylation, histone modifications, chromatin dynamics and small non-coding RNAs play a crucial role in cold stress adaptation. Here, we provide a recent update on cold-induced signaling and regulatory mechanisms. Emphasis is given to the role of epigenetic mechanisms and antifreeze proteins in imparting cold stress tolerance in plants. Lastly, we discuss genetic manipulation strategies to improve cold tolerance and develop cold-resistant plants.
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Yang Z, Mu Y, Wang Y, He F, Shi L, Fang Z, Zhang J, Zhang Q, Geng G, Zhang S. Characterization of a Novel TtLEA2 Gene From Tritipyrum and Its Transformation in Wheat to Enhance Salt Tolerance. FRONTIERS IN PLANT SCIENCE 2022; 13:830848. [PMID: 35444677 PMCID: PMC9014267 DOI: 10.3389/fpls.2022.830848] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/11/2022] [Indexed: 05/12/2023]
Abstract
Late embryogenesis-abundant (LEA) proteins are critical in helping plants cope with salt stress. "Y1805" is a salt-tolerant Tritipyrum. We identified a "Y1805"-specific LEA gene that was expressed highly and sensitively under salt stress using transcriptome analysis. The novel group 2 LEA gene (TtLEA2-1) was cloned from "Y1805." TtLEA2-1 contained a 453 bp open reading frame encoding an 151-amino-acid protein that showed maximum sequence identity (77.00%) with Thinopyrum elongatum by phylogenetic analysis. It was mainly found to be expressed highly in the roots by qRT-PCR analysis and was located in the whole cell. Forty-eight candidate proteins believed to interact with TtLEA2-1 were confirmed by yeast two-hybrid analysis. These interacting proteins were mainly enriched in "environmental information processing," "glycan biosynthesis and metabolism," and "carbohydrate metabolism." Protein-protein interaction analysis indicated that the translation-related 40S ribosomal protein SA was the central node. An efficient wheat transformation system has been established. A coleoptile length of 2 cm, an Agrobacteria cell density of 0.55-0.60 OD600, and 15 KPa vacuum pressure were ideal for common wheat transformation, with an efficiency of up to 43.15%. Overexpression of TaLEA2-1 in wheat "1718" led to greater height, stronger roots, and higher catalase activity than in wild type seedlings. TaLEA2-1 conferred enhanced salt tolerance in transgenic wheat and may be a valuable gene for genetic modification in crops.
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Affiliation(s)
- Zhifen Yang
- College of Agriculture, Guizhou University, Guiyang, China
| | - Yuanhang Mu
- College of Agriculture, Guizhou University, Guiyang, China
| | - Yiqin Wang
- College of Agriculture, Guizhou University, Guiyang, China
| | - Fang He
- College of Agriculture, Guizhou University, Guiyang, China
- Guizhou Subcenter of National Wheat Improvement Center, Guiyang, China
| | - Luxi Shi
- College of Agriculture, Guizhou University, Guiyang, China
| | - Zhongming Fang
- College of Agriculture, Guizhou University, Guiyang, China
| | - Jun Zhang
- College of Agriculture, Guizhou University, Guiyang, China
| | - Qingqin Zhang
- College of Agriculture, Guizhou University, Guiyang, China
| | - Guangdong Geng
- College of Agriculture, Guizhou University, Guiyang, China
- *Correspondence: Guangdong Geng,
| | - Suqin Zhang
- College of Agriculture, Guizhou University, Guiyang, China
- Guizhou Subcenter of National Wheat Improvement Center, Guiyang, China
- Suqin Zhang,
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Plant Dehydrins: Expression, Regulatory Networks, and Protective Roles in Plants Challenged by Abiotic Stress. Int J Mol Sci 2021; 22:ijms222312619. [PMID: 34884426 PMCID: PMC8657568 DOI: 10.3390/ijms222312619] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/18/2021] [Accepted: 11/20/2021] [Indexed: 11/16/2022] Open
Abstract
Dehydrins, also known as Group II late embryogenesis abundant (LEA) proteins, are classic intrinsically disordered proteins, which have high hydrophilicity. A wide range of hostile environmental conditions including low temperature, drought, and high salinity stimulate dehydrin expression. Numerous studies have furnished evidence for the protective role played by dehydrins in plants exposed to abiotic stress. Furthermore, dehydrins play important roles in seed maturation and plant stress tolerance. Hence, dehydrins might also protect plasma membranes and proteins and stabilize DNA conformations. In the present review, we discuss the regulatory networks of dehydrin gene expression including the abscisic acid (ABA), mitogen-activated protein (MAP) kinase cascade, and Ca2+ signaling pathways. Crosstalk among these molecules and pathways may form a complex, diverse regulatory network, which may be implicated in regulating the same dehydrin.
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