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Zhang Y, Liu X, Shi Y, Lang L, Tao S, Zhang Q, Qin M, Wang K, Xu Y, Zheng L, Cao H, Wang H, Zhu Y, Song J, Li K, Xu A, Huang Z. The B-box transcription factor BnBBX22.A07 enhances salt stress tolerance by indirectly activating BnWRKY33.C03. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39189937 DOI: 10.1111/pce.15119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 06/21/2024] [Accepted: 08/15/2024] [Indexed: 08/28/2024]
Abstract
Salt stress has a detrimental impact on both plant growth and global crop yields. B-box proteins have emerged as pivotal players in plant growth and development regulation. Although the precise role of B-box proteins orchestrating salt stress responses in B. napus (Brassica napus) is not well understood in the current literature, further research and molecular explorations are required. Here, we isolated the B-box protein BnBBX22.A07 from B. napus. The overexpression of BnBBX22.A07 significantly improved the salt tolerance of Arabidopsis (Arabidopsis thaliana) and B. napus. Transcriptomic and histological analysis showed that BnBBX22.A07 enhanced the salt tolerance of B. napus by activating the expression of reactive oxygen species (ROS) scavenging-related genes and decreasing salt-induced superoxide anions and hydrogen peroxide. Moreover, BnBBX22.A07 interacted with BnHY5.C09, which specifically bound to and activated the promoter of BnWRKY33.C03. The presence of BnBBX22.A07 enhanced the activation of BnHY5.C09 on BnWRKY33.C03. Overexpression of BnHY5.C09 and BnWRKY33.C03 improved the salt tolerance of Arabidopsis. Functional analyses revealed that BnBBX22.A07-mediated salt tolerance was partly dependent on WRKY33. Taken together, we demonstrate that BnBBX22.A07 functions positively in salt responses not only by activating ROS scavenging-related genes but also by indirectly activating BnWRKY33.C03. Notably, our study offers a promising avenue for the identification of candidate genes that could be harnessed in breeding endeavours to develop salt-resistant transgenic crops.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Xiang Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Yiji Shi
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Lina Lang
- Shandong Seed Administration Station, Jinan, China
| | - Shunxian Tao
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Qi Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Mengfan Qin
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Kai Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Yu Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Lin Zheng
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Hanming Cao
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Han Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Yunlin Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Jia Song
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Keqi Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Aixia Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
| | - Zhen Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy, Northwest A&F University, Yangling, China
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Zhang A, Shang J, Xiao K, Zhang M, Wang S, Zhu W, Wu X, Zha D. WRKY transcription factor 40 from eggplant (Solanum melongena L.) regulates ABA and salt stress responses. Sci Rep 2024; 14:19289. [PMID: 39164381 PMCID: PMC11335892 DOI: 10.1038/s41598-024-69670-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 08/07/2024] [Indexed: 08/22/2024] Open
Abstract
Plants are affected by many environmental factors during their various stages of growth, among which salt stress is a key factor. WRKY transcription factors play important roles in the response to stress in plants. In this study, SmWRKY40 from eggplant (Solanum melongena L.) was found to belong to the subfamily of WRKY transcription factor group II, closely related to the evolution of wild tomato ScWRKY40 (Solanum chilense). The expression of SmWRKY40 could be induced by several abiotic stresses (drought, salt, and high temperature) and ABA to different degrees, with salt stress being the most significant. In Arabidopsis thaliana, the seed germination rate of SmWRKY40 overexpression seedlings was significantly higher than those of the wild type under high concentrations of NaCl and ABA, and root elongation of overexpression lines was also longer than wild type under NaCl treatments. SmWRKY40 overexpression lines were found to enhance Arabidopsis tolerance to salt with lower ROS, MDA, higher soluble protein, proline accumulation, and more active antioxidant enzymes. The expression level of genes related to stress and ABA signaling displayed significant differences in SmWRKY40 overexpression line than that of WT. These results indicate that SmWRKY40 regulates ABA and salt stress responses in Arabidopsis.
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Affiliation(s)
- Aidong Zhang
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Jing Shang
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Kai Xiao
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Min Zhang
- Horticultural Research Institute, Wuhan Academy of Agricultural Sciences, Wuhan, 430345, Hubei, China
| | - Shengjie Wang
- Shanghai Qiande Seed Industry Co., Ltd, Shanghai, 200235, China
| | - Weimin Zhu
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Xuexia Wu
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
| | - Dingshi Zha
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
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Luo L, Zheng Y, Li X, Chen Q, Yang D, Gu Z, Yang Y, Yang Y, Kong X, Yang Y. ICE1 interacts with IDD14 to transcriptionally activate QQS to increase pollen germination and viability. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:1801-1819. [PMID: 38940322 DOI: 10.1111/jipb.13725] [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: 04/08/2024] [Accepted: 05/23/2024] [Indexed: 06/29/2024]
Abstract
In flowering plants, sexual reproductive success depends on the production of viable pollen grains. However, the mechanisms by which QUA QUINE STARCH (QQS) regulates pollen development and how transcriptional activators facilitate the transcription of QQS in this process remain poorly understood. Here, we demonstrate that INDUCER OF CBF EXPRESSION 1 (ICE1), a basic helix-loop-helix (bHLH) transcription factor, acts as a key transcriptional activator and positively regulates QQS expression to increase pollen germination and viability in Arabidopsis thaliana by interacting with INDETERMINATE DOMAIN14 (IDD14). In our genetic and biochemical experiments, overexpression of ICE1 greatly promoted both the activation of QQS and high pollen viability mediated by QQS. IDD14 additively enhanced ICE1 function by promoting the binding of ICE1 to the QQS promoter. In addition, mutation of ICE1 significantly repressed QQS expression; the impaired function of QQS and the abnormal anther dehiscence jointly affected pollen development of the ice1-2 mutant. Our results also showed that the enhancement of pollen activity by ICE1 depends on QQS. Furthermore, QQS interacted with CUT1, the key enzyme for long-chain lipid biosynthesis. This interaction both promoted CUT1 activity and regulated pollen lipid metabolism, ultimately determining pollen hydration and fertility. Our results not only provide new insights into the key function of QQS in promoting pollen development by regulating pollen lipid metabolism, but also elucidate the mechanism that facilitates the transcription of QQS in this vital developmental process.
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Affiliation(s)
- Landi Luo
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Yan Zheng
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Xieshengyang Li
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
- School of Agriculture, Yunnan University, Kunming, 650091, China
| | - Qian Chen
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Danni Yang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhijia Gu
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Ya Yang
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Yunqiang Yang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Xiangxiang Kong
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
| | - Yongping Yang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Chinese Academy of Sciences, Xishuangbanna, 666303, China
- Germplasm Bank of Wild Species, Yunnan Key Laboratory for Crop Wild Relatives Omics, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, 650201, China
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Dong T, Su J, Li H, Du Y, Wang Y, Chen P, Duan H. Genome-Wide Identification of the WRKY Gene Family in Four Cotton Varieties and the Positive Role of GhWRKY31 in Response to Salt and Drought Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:1814. [PMID: 38999654 PMCID: PMC11243856 DOI: 10.3390/plants13131814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/14/2024]
Abstract
The WRKY gene family is ubiquitously distributed in plants, serving crucial functions in stress responses. Nevertheless, the structural organization and evolutionary dynamics of WRKY genes in cotton have not been fully elucidated. In this study, a total of 112, 119, 217, and 222 WRKY genes were identified in Gossypium arboreum, Gossypium raimondii, Gossypium hirsutum, and Gossypium barbadense, respectively. These 670 WRKY genes were categorized into seven distinct subgroups and unequally distributed across chromosomes. Examination of conserved motifs, domains, cis-acting elements, and gene architecture collectively highlighted the evolutionary conservation and divergence within the WRKY gene family in cotton. Analysis of synteny and collinearity further confirmed instances of expansion, duplication, and loss events among WRKY genes during cotton evolution. Furthermore, GhWRKY31 transgenic Arabidopsis exhibited heightened germination rates and longer root lengths under drought and salt stress. Silencing GhWRKY31 in cotton led to reduced levels of ABA, proline, POD, and SOD, along with downregulated expression of stress-responsive genes. Yeast one-hybrid and molecular docking assays confirmed the binding capacity of GhWRKY31 to the W box of GhABF1, GhDREB2, and GhRD29. The findings collectively offer a systematic and comprehensive insight into the evolutionary patterns of cotton WRKYs, proposing a suitable regulatory framework for developing cotton cultivars with enhanced resilience to drought and salinity stress.
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Affiliation(s)
- Tianyu Dong
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
- Henan International Joint Laboratory of Aquatic Toxicology and Health Protection, College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Jiuchang Su
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
- Henan International Joint Laboratory of Aquatic Toxicology and Health Protection, College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Haoyuan Li
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Yajie Du
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Ying Wang
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Peilei Chen
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
- Henan International Joint Laboratory of Aquatic Toxicology and Health Protection, College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Hongying Duan
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
- Henan International Joint Laboratory of Aquatic Toxicology and Health Protection, College of Life Science, Henan Normal University, Xinxiang 453007, China
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5
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Bai Y, Shi K, Shan D, Wang C, Yan T, Hu Z, Zheng X, Zhang T, Song H, Li R, Zhao Y, Deng Q, Dai C, Zhou Z, Guo Y, Kong J. The WRKY17-WRKY50 complex modulates anthocyanin biosynthesis to improve drought tolerance in apple. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 340:111965. [PMID: 38142750 DOI: 10.1016/j.plantsci.2023.111965] [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: 10/04/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023]
Abstract
Drought stress is increasing worldwide due to global warming, which severely reduces apple (Malus domestica) yield. Clarifying the basis of drought tolerance in apple could accelerate the molecular breeding of drought-tolerant cultivars to maintain apple production. We identified a transcription factor MdWRKY50 by yeast two-hybrid (Y2H) assays as an interactor of the drought-tolerant protein MdWRKY17, and confirmed their interaction by bimolecular fluorescence complementation (BiFC) and pull-down assays. MdWRKY50 was induced by drought and when overexpressed in apple, conferred transgenic apple plants enhanced drought tolerance by directly binding to the promoter of anthocyanin synthetic gene Chalcone synthase (MdCHS) to upregulate its expression for higher anthocyanin. Increased anthocyanin relieves apple plants from oxidative damage under drought stress. MdWRKY50 RNA-interference transgenic apple plants showed opposite phenotypes. The dimerization of MdWRKY50 with mutated MdWRKY17DP mimicking drought-induced phosphorylation by the mitogen-activated protein kinase kinase 2 (MEK2)-MPK6 cascade, compared with MdWRKY17AP and MdWRKY17, further promoted anthocyanin biosynthesis, suggesting dimerization with MdWRKY17 makes MdWRKY50 more powerful in promoting anthocyanin biosynthesis under drought stress. Taken together, we isolated an entire MEK2-MAPK6-MdWRKY17-MdWRKY50-MdCHS pathway for drought tolerance and generated transgenic apple germplasm with enhanced drought tolerance and higher anthocyanin levels.
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Affiliation(s)
- Yixue Bai
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Kun Shi
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Dongqian Shan
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Chanyu Wang
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Tianci Yan
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Zehui Hu
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Xiaodong Zheng
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Tong Zhang
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Handong Song
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Ruoxue Li
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yixuan Zhao
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Qian Deng
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Changjian Dai
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Zhaoyang Zhou
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yan Guo
- College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Jin Kong
- College of Horticulture, China Agricultural University, Beijing 100193, China.
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6
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Mostafa K, Yerlikaya BA, Abdulla MF, Aydin A, Yerlikaya S, Kavas M. Genome-wide analysis of PvMADS in common bean and functional characterization of PvMADS31 in Arabidopsis thaliana as a player in abiotic stress responses. THE PLANT GENOME 2024; 17:e20432. [PMID: 38327143 DOI: 10.1002/tpg2.20432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/15/2023] [Accepted: 01/02/2024] [Indexed: 02/09/2024]
Abstract
Changing climatic conditions with rising temperatures and altered precipitation patterns pose significant challenges to agricultural productivity, particularly for common bean crops. Transcription factors (TFs) are crucial regulators that can mitigate the impact of biotic and abiotic stresses on crop production. The MADS-box TFs family has been implicated in various plant physiological processes, including stress-responsive mechanisms. However, their role in common bean and their response to stressful conditions remain poorly understood. Here, we identified 35 MADS-box gene family members in common bean, with conserved MADS-box domains and other functional domains. Gene duplication events were observed, suggesting the significance of duplication in the evolutionary development of gene families. The analysis of promoter regions revealed diverse elements, including stress-responsive elements, indicating their potential involvement in stress responses. Notably, PvMADS31, a member of the PvMADS-box gene family, demonstrated rapid upregulation under various abiotic stress conditions, including NaCl, polyethylene glycol, drought, and abscisic acid (ABA) treatments. Transgenic plants overexpressing PvMADS31 displayed enhanced lateral root development, root elongation, and seed germination under stress conditions. Furthermore, PvMADS31 overexpression in Arabidopsis resulted in improved drought tolerance, likely attributed to the enhanced scavenging of ROS and increased proline accumulation. These findings suggest that PvMADS31 might play a crucial role in modulating seed germination, root development, and stress responses, potentially through its involvement in auxin and ABA signaling pathways. Overall, this study provides valuable insights into the potential roles of PvMADS-box genes in abiotic stress responses in common bean, offering prospects for crop improvement strategies to enhance resilience under changing environmental conditions.
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Affiliation(s)
- Karam Mostafa
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
- The Central Laboratory for Date Palm Research and Development, Agricultural Research Center (ARC), Giza, Egypt
| | - Bayram Ali Yerlikaya
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
| | - Mohamed Farah Abdulla
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
| | - Abdullah Aydin
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
| | - Seher Yerlikaya
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
| | - Musa Kavas
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
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7
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Lei L, Gordon SP, Liu L, Sade N, Lovell JT, Rubio Wilhelmi MDM, Singan V, Sreedasyam A, Hestrin R, Phillips J, Hernandez BT, Barry K, Shu S, Jenkins J, Schmutz J, Goodstein DM, Thilmony R, Blumwald E, Vogel JP. The reference genome and abiotic stress responses of the model perennial grass Brachypodium sylvaticum. G3 (BETHESDA, MD.) 2023; 14:jkad245. [PMID: 37883711 PMCID: PMC10755203 DOI: 10.1093/g3journal/jkad245] [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: 06/26/2023] [Revised: 09/12/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023]
Abstract
Perennial grasses are important forage crops and emerging biomass crops and have the potential to be more sustainable grain crops. However, most perennial grass crops are difficult experimental subjects due to their large size, difficult genetics, and/or their recalcitrance to transformation. Thus, a tractable model perennial grass could be used to rapidly make discoveries that can be translated to perennial grass crops. Brachypodium sylvaticum has the potential to serve as such a model because of its small size, rapid generation time, simple genetics, and transformability. Here, we provide a high-quality genome assembly and annotation for B. sylvaticum, an essential resource for a modern model system. In addition, we conducted transcriptomic studies under 4 abiotic stresses (water, heat, salt, and freezing). Our results indicate that crowns are more responsive to freezing than leaves which may help them overwinter. We observed extensive transcriptional responses with varying temporal dynamics to all abiotic stresses, including classic heat-responsive genes. These results can be used to form testable hypotheses about how perennial grasses respond to these stresses. Taken together, these results will allow B. sylvaticum to serve as a truly tractable perennial model system.
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Affiliation(s)
- Li Lei
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sean P Gordon
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Lifeng Liu
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nir Sade
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel
| | - John T Lovell
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | | | - Vasanth Singan
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Avinash Sreedasyam
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Rachel Hestrin
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jeremy Phillips
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Bryan T Hernandez
- Crop Improvement and Genetics Research Unit, USDA-ARS Western Regional Research Center, Albany, CA 94710, USA
| | - Kerrie Barry
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Shengqiang Shu
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jerry Jenkins
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Jeremy Schmutz
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - David M Goodstein
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Roger Thilmony
- Crop Improvement and Genetics Research Unit, USDA-ARS Western Regional Research Center, Albany, CA 94710, USA
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - John P Vogel
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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8
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Zhu Z, Dai Y, Yu G, Zhang X, Chen Q, Kou X, Mehareb EM, Raza G, Zhang B, Wang B, Wang K, Han J. Dynamic physiological and transcriptomic changes reveal memory effects of salt stress in maize. BMC Genomics 2023; 24:726. [PMID: 38041011 PMCID: PMC10690987 DOI: 10.1186/s12864-023-09845-w] [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: 09/11/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023] Open
Abstract
BACKGROUND Pre-exposing plants to abiotic stresses can induce stress memory, which is crucial for adapting to subsequent stress exposure. Although numerous genes involved in salt stress response have been identified, the understanding of memory responses to salt stress remains limited. RESULTS In this study, we conducted physiological and transcriptional assays on maize plants subjected to recurrent salt stress to characterize salt stress memory. During the second exposure to salt stress, the plants exhibited enhanced salt resistance, as evidenced by increased proline content and higher POD and SOD activity, along with decreased MDA content, indicative of physiological memory behavior. Transcriptional analysis revealed fewer differentially expressed genes and variations in response processes during the second exposure compared to the first, indicative of transcriptional memory behavior. A total of 2,213 salt stress memory genes (SMGs) were identified and categorized into four response patterns. The most prominent group of SMGs consisted of genes with elevated expression during the first exposure to salt stress but reduced expression after recurrent exposure to salt stress, or vice versa ([+ / -] or [- / +]), indicating that a revised response is a crucial process in plant stress memory. Furthermore, nine transcription factors (TFs) (WRKY40, WRKY46, WRKY53, WRKY18, WRKY33, WRKY70, MYB15, KNAT7, and WRKY54) were identified as crucial factors related to salt stress memory. These TFs regulate over 53% of SMGs, underscoring their potential significance in salt stress memory. CONCLUSIONS Our study demonstrates that maize can develop salt stress memory, and the genes identified here will aid in the genetic improvement of maize and other crops.
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Affiliation(s)
- Zhiying Zhu
- School of Life Sciences, Nantong University, Nantong, 226019, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yan Dai
- School of Life Sciences, Nantong University, Nantong, 226019, China
| | - Guangrun Yu
- School of Life Sciences, Nantong University, Nantong, 226019, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xin Zhang
- School of Life Sciences, Nantong University, Nantong, 226019, China
| | - Qi Chen
- School of Life Sciences, Nantong University, Nantong, 226019, China
| | - Xiaobing Kou
- School of Life Sciences, Nantong University, Nantong, 226019, China
| | - Eid M Mehareb
- Sugar Crops Research Institute, Agricultural Research Center, Giza, 12619, Egypt
| | - Ghulam Raza
- National Institute for Biotechnology and Genetic Engineering, College Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, 38000, Pakistan
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Baohua Wang
- School of Life Sciences, Nantong University, Nantong, 226019, China.
| | - Kai Wang
- School of Life Sciences, Nantong University, Nantong, 226019, China.
| | - Jinlei Han
- School of Life Sciences, Nantong University, Nantong, 226019, China.
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9
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Shu H, Altaf MA, Mushtaq N, Fu H, Lu X, Zhu G, Cheng S, Wang Z. Physiological and Transcriptome Analysis of the Effects of Exogenous Strigolactones on Drought Responses of Pepper Seedlings. Antioxidants (Basel) 2023; 12:2019. [PMID: 38136139 PMCID: PMC10740728 DOI: 10.3390/antiox12122019] [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: 10/17/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 12/24/2023] Open
Abstract
Drought stress significantly restricts the growth, yield, and quality of peppers. Strigolactone (SL), a relatively new plant hormone, has shown promise in alleviating drought-related symptoms in pepper plants. However, there is limited knowledge on how SL affects the gene expression in peppers when exposed to drought stress (DS) after the foliar application of SL. To explore this, we conducted a thorough physiological and transcriptome analysis investigation to uncover the mechanisms through which SL mitigates the effects of DS on pepper seedlings. DS inhibited the growth of pepper seedlings, altered antioxidant enzyme activity, reduced relative water content (RWC), and caused oxidative damage. On the contrary, the application of SL significantly enhanced RWC, promoted root morphology, and increased leaf pigment content. SL also protected pepper seedlings from drought-induced oxidative damage by reducing MDA and H2O2 levels and maintaining POD, CAT, and SOD activity. Moreover, transcriptomic analysis revealed that differentially expressed genes were enriched in ribosomes, ABC transporters, phenylpropanoid biosynthesis, and Auxin/MAPK signaling pathways in DS and DS + SL treatment. Furthermore, the results of qRT-PCR showed the up-regulation of AGR7, ABI5, BRI1, and PDR4 and down-regulation of SAPK6, NTF4, PYL6, and GPX4 in SL treatment compared with drought-only treatment. In particular, the key gene for SL signal transduction, SMXL6, was down-regulated under drought. These results elucidate the molecular aspects underlying SL-mediated plant DS tolerance, and provide pivotal strategies for effectively achieving pepper drought resilience.
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Affiliation(s)
- Huangying Shu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Muhammad Ahsan Altaf
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Naveed Mushtaq
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Huizhen Fu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Xu Lu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Guopeng Zhu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Shanhan Cheng
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Zhiwei Wang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
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10
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Wang S, Liu Y, Hao X, Wang Z, Chen Y, Qu Y, Yao H, Shen Y. AnWRKY29 from the desert xerophytic evergreen Ammopiptanthus nanus improves drought tolerance through osmoregulation in transgenic plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 336:111851. [PMID: 37648116 DOI: 10.1016/j.plantsci.2023.111851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/15/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
As a significant transcription factor family in plants, WRKYs have a crucial role in responding to different adverse environments. They have been repeatedly demonstrated to contribute to drought resistance. However, no systematic exploration of the WRKY family has been reported in the evergreen shrub Ammopiptanthus nanus under drought conditions. Here, we showed that AnWRKY29 expression is strongly induced under drought stress. AnWRKY29 belongs to the group IIe of WRKY gene family. To characterize the function of AnWRKY29, we generated transgenic plants overexpressing this gene in Arabidopsis thaliana. We determined that AnWRKY29 overexpression of mainly improves the drought resistance of transgenic plants to water stress by reducing water loss, preventing electrolyte leakage, and increasing the absorption of inorganic ions. In addition, the AnWRKY29 transgenic plants synthesized more trehalose under water stress. The overexpression of AnWRKY29 also enhanced the antioxidant and osmoregulation capacity of transgenic plants by increasing the activities of catalase, peroxidase and superoxide dismutase, thus increasing the scavenging of reactive oxygen species and propylene glycol synthesis aldehyde oxidase. In summary, our study shows that AnWRKY29 plays an important role in the drought tolerance pathway in plants.
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Affiliation(s)
- Shuyao Wang
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yahui Liu
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xin Hao
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Zhaoyuan Wang
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yingying Chen
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yue Qu
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Hongjun Yao
- National Engineering Research Center of Tree breeding and Ecological restoration, Beijing Forestry University, Beijing, China.
| | - Yingbai Shen
- National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.
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11
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Sun S, Liu X, Zhang T, Yang H, Yu B. Functional Characterisation of the Transcription Factor GsWRKY23 Gene from Glycine soja in Overexpressed Soybean Composite Plants and Arabidopsis under Salt Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:3030. [PMID: 37687277 PMCID: PMC10490167 DOI: 10.3390/plants12173030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
WRKY proteins are a superfamily of transcription factors (TFs) that play multiple roles in plants' growth, development, and environmental stress response. In this study, a novel WRKY gene called GsWRKY23 that is specifically upregulated in salt-tolerant Glycine soja accession BB52 seedlings was identified by transcriptomic analysis under salt stress. How the physiological functions and mechanisms of the GsWRKY23 gene affect salt tolerance was investigated using transformations of soybean hairy roots and Arabidopsis, including wild-type (WT) and atwrky23-mutant plants. The results showed that GsWRKY23 in the roots, stems, and leaves of BB52, along with its promoter in the cotyledons and root tips of GsWRKY23pro::GUS Arabidopsis seedlings, displayed enhanced induction under salt stress. GsWRKY23 localises to the nucleus and shows transcriptional activation ability in yeast cells. Compared to GsWRKY23-RNAi wild soybean hairy-root composite plants under salt stress, obvious improvements, such as superior growth appearance, plant height and fresh weight (FW), and leaf chlorophyll and relative water content (RWC), were displayed by GsWRKY23-overexpressing (OE) composite plants. Moreover, their relative electrolytic leakage (REL) values and malondialdehyde (MDA) contents in the roots and leaves declined significantly. Most of the contents of Na+ and Cl- in the roots, stems, and leaves of GsWRKY23-OE plants decreased significantly, while the content of K+ in the roots increased, and the content of NO3- displayed no obvious change. Ultimately, the Na+/K+ ratios of roots, stems, and leaves, along with the Cl-/NO3- ratios of roots and stems, decreased significantly. In the transgenic WT-GsWRKY23 and atwrky23-GsWRKY23 Arabidopsis seedlings, the salt-induced reduction in seed germination rate and seedling growth was markedly ameliorated; plant FW, leaf chlorophyll content, and RWC increased, and the REL value and MDA content in shoots decreased significantly. In addition, the accumulation of Na+ and Cl- decreased, and the K+ and NO3- levels increased markedly to maintain lower Na+/K+ and Cl-/NO3- ratios in the roots and shoots. Taken together, these results highlight the role of GsWRKY23 in regulating ionic homeostasis in NaCl-stressed overexpressed soybean composite plants and Arabidopsis seedlings to maintain lower Na+/K+ and Cl-/NO3- ratios in the roots and shoots, thus conferring improved salt tolerance.
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Affiliation(s)
- Shile Sun
- Lab of Plant Stress Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xun Liu
- Lab of Plant Stress Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Tianlei Zhang
- Lab of Plant Stress Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Yang
- Lab of Plant Stress Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Bingjun Yu
- Lab of Plant Stress Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
- College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
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12
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Rachowka J, Anielska-Mazur A, Bucholc M, Stephenson K, Kulik A. SnRK2.10 kinase differentially modulates expression of hub WRKY transcription factors genes under salinity and oxidative stress in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2023; 14:1135240. [PMID: 37621885 PMCID: PMC10445769 DOI: 10.3389/fpls.2023.1135240] [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: 12/31/2022] [Accepted: 05/30/2023] [Indexed: 08/26/2023]
Abstract
In nature, all living organisms must continuously sense their surroundings and react to the occurring changes. In the cell, the information about these changes is transmitted to all cellular compartments, including the nucleus, by multiple phosphorylation cascades. Sucrose Non-Fermenting 1 Related Protein Kinases (SnRK2s) are plant-specific enzymes widely distributed across the plant kingdom and key players controlling abscisic acid (ABA)-dependent and ABA-independent signaling pathways in the plant response to osmotic stress and salinity. The main deleterious effects of salinity comprise water deficiency stress, disturbances in ion balance, and the accompanying appearance of oxidative stress. The reactive oxygen species (ROS) generated at the early stages of salt stress are involved in triggering intracellular signaling required for the fast stress response and modulation of gene expression. Here we established in Arabidopsis thaliana that salt stress or induction of ROS accumulation by treatment of plants with H2O2 or methyl viologen (MV) induces the expression of several genes encoding transcription factors (TFs) from the WRKY DNA-Binding Protein (WRKY) family. Their induction by salinity was dependent on SnRK2.10, an ABA non-activated kinase, as it was strongly reduced in snrk2.10 mutants. The effect of ROS was clearly dependent on their source. Following the H2O2 treatment, SnRK2.10 was activated in wild-type (wt) plants and the induction of the WRKY TFs expression was only moderate and was enhanced in snrk2.10 lines. In contrast, MV did not activate SnRK2.10 and the WRKY induction was very strong and was similar in wt and snrk2.10 plants. A bioinformatic analysis indicated that the WRKY33, WRKY40, WRKY46, and WRKY75 transcription factors have a similar target range comprising numerous stress-responsive protein kinases. Our results indicate that the stress-related functioning of SnRK2.10 is fine-tuned by the source and intracellular distribution of ROS and the co-occurrence of other stress factors.
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Affiliation(s)
| | | | | | | | - Anna Kulik
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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13
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Sowders JM, Tanaka K. A histochemical reporter system to study extracellular ATP response in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1183335. [PMID: 37332691 PMCID: PMC10272726 DOI: 10.3389/fpls.2023.1183335] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/09/2023] [Indexed: 06/20/2023]
Abstract
When cells experience acute mechanical distress, they release ATP from their cellular compartment into the surrounding microenvironment. This extracellular ATP (eATP) can then act as a danger signal-signaling cellular damage. In plants, cells adjacent to damage detect rising eATP concentrations through the cell-surface receptor kinase, P2K1. Following eATP perception, P2K1 initiates a signaling cascade mobilizing plant defense. Recent transcriptome analysis revealed a profile of eATP-induced genes sharing pathogen- and wound-response hallmarks-consistent with a working model for eATP as a defense-mobilizing danger signal. To build on the transcriptional footprint and broaden our understanding of dynamic eATP signaling responses in plants, we aimed to i) generate a visual toolkit for eATP-inducible marker genes using a β-glucuronidase (GUS) reporter system and ii) evaluate the spatiotemporal response of these genes to eATP in plant tissues. Here, we demonstrate that the promoter activities of five genes, ATPR1, ATPR2, TAT3, WRKY46, and CNGC19, were highly sensitive to eATP in the primary root meristem and elongation zones with maximal responses at 2 h after treatment. These results suggest the primary root tip as a hub to study eATP-signaling activity and provide a proof-of-concept toward using these reporters to further dissect eATP and damage signaling in plants.
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Affiliation(s)
- Joel M. Sowders
- Department of Plant Pathology, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA, United States
- Molecular Plant Sciences Program, Washington State University, Pullman, WA, United States
| | - Kiwamu Tanaka
- Department of Plant Pathology, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA, United States
- Molecular Plant Sciences Program, Washington State University, Pullman, WA, United States
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14
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An X, Liu Q, Jiang H, Dong G, Tian D, Luo X, Chen C, Li W, Liu T, Zou L, Ying J, Zhou H, Zhu X, Chen X. Bioinformatics Analysis of WRKY Family Genes in Flax ( Linum usitatissimum). Life (Basel) 2023; 13:1258. [PMID: 37374041 DOI: 10.3390/life13061258] [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: 04/18/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
WRKY gene family is one of the largest transcription factor families involved in various physiological processes of plants. Flax (Linum usitatissimum) is an important stem fiber crop, and it is also an economically important crop in natural fiber and textile industries around the world. In this study, 105 WRKY genes were obtained by screening the whole genome of flax. There were 26 in group I, 68 in group II, 8 in group III and 3 in group UN. The characteristics of the WRKY motif and gene structure in each group are similar. The promoter sequence of WRKY genes includes photoresponsive elements, core regulatory elements and 12 cis-acting elements under abiotic stress. Similar to A. thaliana and Compositae plants, WRKY genes are evenly distributed on each chromosome, with segmental and tandem repeated events, which play a major role in the evolution of WRKY genes. The flax WRKY gene family is mainly concentrated in group I and group II. This study is mainly based on genome-wide information to classify and analyze the flax WRKY gene family, laying a foundation for further understanding the role of WRKY transcription factors in species evolution and functional analysis.
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Affiliation(s)
- Xia An
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Qin Liu
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Hui Jiang
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Guoyun Dong
- Zhangjiajie Research Institute of Agricultural Science and Technology, Zhangjiajie 427000, China
| | - Danqing Tian
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Xiahong Luo
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Changli Chen
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Wenlue Li
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Tingting Liu
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Lina Zou
- Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Jinyao Ying
- Hangzhou Xiaoshan District Agricultural (Forestry) Technology Promotion, Hangzhou 311203, China
| | - Huaping Zhou
- Hangzhou Xiaoshan District Agricultural (Forestry) Technology Promotion, Hangzhou 311203, China
| | - Xuan Zhu
- Dali Bai Autonomous Prefecture Agricultural Science Extension Research Institute, Dali 671699, China
| | - Xiaoyan Chen
- Dali Bai Autonomous Prefecture Agricultural Science Extension Research Institute, Dali 671699, China
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15
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Integrated Transcriptome and Metabolome Analysis of Rice Leaves Response to High Saline-Alkali Stress. Int J Mol Sci 2023; 24:ijms24044062. [PMID: 36835473 PMCID: PMC9960601 DOI: 10.3390/ijms24044062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/11/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Rice (Oryza sativa) is one of the most important crops grown worldwide, and saline-alkali stress seriously affects the yield and quality of rice. It is imperative to elucidate the molecular mechanisms underlying rice response to saline-alkali stress. In this study, we conducted an integrated analysis of the transcriptome and metabolome to elucidate the effects of long-term saline-alkali stress on rice. High saline-alkali stress (pH > 9.5) induced significant changes in gene expression and metabolites, including 9347 differentially expressed genes (DEGs) and 693 differentially accumulated metabolites (DAMs). Among the DAMs, lipids and amino acids accumulation were greatly enhanced. The pathways of the ABC transporter, amino acid biosynthesis and metabolism, glyoxylate and dicarboxylate metabolism, glutathione metabolism, TCA cycle, and linoleic acid metabolism, etc., were significantly enriched with DEGs and DAMs. These results suggest that the metabolites and pathways play important roles in rice's response to high saline-alkali stress. Our study deepens the understanding of mechanisms response to saline-alkali stress and provides references for molecular design breeding of saline-alkali resistant rice.
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16
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Takeda T, Shirai K, Kim YW, Higuchi-Takeuchi M, Shimizu M, Kondo T, Ushijima T, Matsushita T, Shinozaki K, Hanada K. A de novo gene originating from the mitochondria controls floral transition in Arabidopsis thaliana. PLANT MOLECULAR BIOLOGY 2023; 111:189-203. [PMID: 36306001 DOI: 10.1007/s11103-022-01320-6] [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: 09/05/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
De novo genes created in the plant mitochondrial genome have frequently been transferred into the nuclear genome via intergenomic gene transfer events. Therefore, plant mitochondria might be a source of de novo genes in the nuclear genome. However, the functions of de novo genes originating from mitochondria and the evolutionary fate remain unclear. Here, we revealed that an Arabidopsis thaliana specific small coding gene derived from the mitochondrial genome regulates floral transition. We previously identified 49 candidate de novo genes that induce abnormal morphological changes on overexpression. We focused on a candidate gene derived from the mitochondrial genome (sORF2146) that encodes 66 amino acids. Comparative genomic analyses indicated that the mitochondrial sORF2146 emerged in the Brassica lineage as a de novo gene. The nuclear sORF2146 emerged following an intergenomic gene transfer event in the A. thaliana after the divergence between Arabidopsis and Capsella. Although the nuclear and mitochondrial sORF2146 sequences are the same in A. thaliana, only the nuclear sORF2146 is transcribed. The nuclear sORF2146 product is localized in mitochondria, which may be associated with the pseudogenization of the mitochondrial sORF2146. To functionally characterize the nuclear sORF2146, we performed a transcriptomic analysis of transgenic plants overexpressing the nuclear sORF2146. Flowering transition-related genes were highly regulated in the transgenic plants. Subsequent phenotypic analyses demonstrated that the overexpression and knockdown of sORF2146 in transgenic plants resulted in delayed and early flowering, respectively. These findings suggest that a lineage-specific de novo gene derived from mitochondria has an important regulatory effect on floral transition.
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Affiliation(s)
- Tomoyuki Takeda
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-Shi, Fukuoka, 820-8502, Japan
| | - Kazumasa Shirai
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-Shi, Fukuoka, 820-8502, Japan
| | - You-Wang Kim
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-Shi, Fukuoka, 820-8502, Japan
| | | | - Minami Shimizu
- RIKEN Center for Sustainable Resource Science, Yokohama-Shi, Kanagawa, 230-0045, Japan
| | - Takayuki Kondo
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-Shi, Fukuoka, 820-8502, Japan
| | - Tomokazu Ushijima
- Department of Agricultural Science and Technology, Faculty of Agriculture, Setsunan University, Osaka, Japan
| | - Tomonao Matsushita
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Kazuo Shinozaki
- RIKEN Center for Sustainable Resource Science, Yokohama-Shi, Kanagawa, 230-0045, Japan
| | - Kousuke Hanada
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-Shi, Fukuoka, 820-8502, Japan.
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17
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Yang X, Zhao S, Ge W, Wang T, Fan Z, Wang Y. Genome-wide identification and expression analysis of the WRKY gene family in cabbage ( Brassica oleracea var. capitata L.). BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2110518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- Xuyan Yang
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Shuang Zhao
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Wendong Ge
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Tenghui Wang
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Zhenyu Fan
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Yushu Wang
- Department of Horticulture, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
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Cao Q, Huang L, Li J, Qu P, Tao P, Crabbe MJC, Zhang T, Qiao Q. Integrated transcriptome and methylome analyses reveal the molecular regulation of drought stress in wild strawberry (Fragaria nilgerrensis). BMC PLANT BIOLOGY 2022; 22:613. [PMID: 36575384 PMCID: PMC9795625 DOI: 10.1186/s12870-022-04006-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Fragaria nilgerrensis, which is a diploid wild strawberry with excellent drought-resistance, would provide useful candidate genes for improving drought resistance of cultivated strawberry. So far, its molecular regulatory networks involved in drought stress are unclear. We therefore investigated the drought response regulatory networks of F. nilgerrensis based on the integrated analysis of DNA methylation, transcriptome and physiological traits during four time points under drought stress. RESULTS: The most differentially expressed genes and the physiological changes were found at 8 days (T8) compared with 0 day (T0, control). Methylome analysis revealed slight dynamic changes in genome-wide mC levels under drought conditions, while the most hypomethylated and hypermethylated regions were identified at T4 and T8. Association analysis of the methylome and transcriptome revealed that unexpressed genes exhibited expected hypermethylation levels in mCHG and mCHH contexts, and highly expressed genes exhibited corresponding hypomethylation levels in the gene body, but mCG contexts showed the opposite trend. Then, 835 differentially methylated and expressed genes were identified and grouped into four clustering patterns to characterize their functions. The genes with either negative or positive correlation between methylation and gene expression were mainly associated with kinases, Reactive Oxygen Species (ROS) synthesis, scavenging, and the abscisic acid (ABA) signal pathway. Consistently, weighted gene co-expression network analysis (WGCNA) revealed Hub genes including NCED, CYP707A2, PP2Cs and others that play important roles in the ABA signaling pathway. CONCLUSION F. nilgerrensis drought is dominated by ABA-dependent pathways, possibly accompanied by ABA-independent crosstalk. DNA methylation may affect gene expression, but their correlation was more subtle and multiple types of association exist. Maintaining the balance between ROS regeneration and scavenging is an important factor in drought resistance in F. nilgerrensis. These results deepen our understanding of drought resistance and its application in breeding in strawberry plants.
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Affiliation(s)
- Qiang Cao
- School of Agriculture, Yunnan University, 650091, Kunming, China
| | - Lin Huang
- School of Agriculture, Yunnan University, 650091, Kunming, China
| | - Jiamin Li
- School of Agriculture, Yunnan University, 650091, Kunming, China
| | - Peng Qu
- School of Agriculture, Yunnan University, 650091, Kunming, China
| | - Pang Tao
- Horticultural Research Institute, Yunnan Academy of Agricultural Sciences, 650205, Kunming, China
| | - M James C Crabbe
- Wolfson College, Oxford University, Oxford, OX26UD, UK
- Institute of Biomedical and Environmental Science and Technology, School of Life Sciences, University of Bedfordshire, Park Square, LU1 3JU, Luton, UK
- School of Life Science, Shanxi University, 030006, Taiyuan, Shanxi, China
| | - Ticao Zhang
- College of Chinese Material Medica, Yunnan University of Chinese Medicine, 650500, Kunming, China.
| | - Qin Qiao
- College of Horticulture and Landscape, Yunnan Agricultural University, 650201, Kunming, China.
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Jia C, Guo B, Wang B, Li X, Yang T, Li N, Wang J, Yu Q. The LEA gene family in tomato and its wild relatives: genome-wide identification, structural characterization, expression profiling, and role of SlLEA6 in drought stress. BMC PLANT BIOLOGY 2022; 22:596. [PMID: 36536303 PMCID: PMC9762057 DOI: 10.1186/s12870-022-03953-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Late embryogenesis abundant (LEA) proteins are widely distributed in higher plants and play crucial roles in regulating plant growth and development processes and resisting abiotic stress. Cultivated tomato (Solanum lycopersicum) is an important vegetable crop worldwide; however, its growth, development, yield, and quality are currently severely constrained by abiotic stressors. In contrast, wild tomato species are more tolerant to abiotic stress and can grow normally in extreme environments. The main objective of this study was to identify, characterize, and perform gene expression analysis of LEA protein families from cultivated and wild tomato species to mine candidate genes and determine their potential role in abiotic stress tolerance in tomatoes. RESULTS Total 60, 69, 65, and 60 LEA genes were identified in S. lycopersicum, Solanum pimpinellifolium, Solanum pennellii, and Solanum lycopersicoides, respectively. Characterization results showed that these genes could be divided into eight clusters, with the LEA_2 cluster having the most members. Most LEA genes had few introns and were non-randomly distributed on chromosomes; the promoter regions contained numerous cis-acting regulatory elements related to abiotic stress tolerance and phytohormone responses. Evolutionary analysis showed that LEA genes were highly conserved and that the segmental duplication event played an important role in evolution of the LEA gene family. Transcription and expression pattern analyses revealed different regulatory patterns of LEA genes between cultivated and wild tomato species under normal conditions. Certain S. lycopersicum LEA (SlLEA) genes showed similar expression patterns and played specific roles under different abiotic stress and phytohormone treatments. Gene ontology and protein interaction analyses showed that most LEA genes acted in response to abiotic stimuli and water deficit. Five SlLEA proteins were found to interact with 11 S. lycopersicum WRKY proteins involved in development or resistance to stress. Virus-induced gene silencing of SlLEA6 affected the antioxidant and reactive oxygen species defense systems, increased the degree of cellular damage, and reduced drought resistance in S. lycopersicum. CONCLUSION These findings provide comprehensive information on LEA proteins in cultivated and wild tomato species and their possible functions under different abiotic and phytohormone stresses. The study systematically broadens our current understanding of LEA proteins and candidate genes and provides a theoretical basis for future functional studies aimed at improving stress resistance in tomato.
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Affiliation(s)
- Chunping Jia
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Bin Guo
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi, China
| | - Baike Wang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Xin Li
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi, China
| | - Tao Yang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Ning Li
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Juan Wang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China.
| | - Qinghui Yu
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China.
- College of Life Science and Technology, Xinjiang University, Urumqi, China.
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20
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Wu TY, Krishnamoorthi S, Boonyaves K, Al-Darabsah I, Leong R, Jones AM, Ishizaki K, Liao KL, Urano D. G protein controls stress readiness by modulating transcriptional and metabolic homeostasis in Arabidopsis thaliana and Marchantia polymorpha. MOLECULAR PLANT 2022; 15:1889-1907. [PMID: 36321200 DOI: 10.1016/j.molp.2022.10.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 10/03/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
The core G protein signaling module, which consists of Gα and extra-large Gα (XLG) subunits coupled with the Gβγ dimer, is a master regulator of various stress responses. In this study, we compared the basal and salt stress-induced transcriptomic, metabolomic and phenotypic profiles in Gα, Gβ, and XLG-null mutants of two plant species, Arabidopsis thaliana and Marchantia polymorpha, and showed that G protein mediates the shift of transcriptional and metabolic homeostasis to stress readiness status. We demonstrated that such stress readiness serves as an intrinsic protection mechanism against further stressors through enhancing the phenylpropanoid pathway and abscisic acid responses. Furthermore, WRKY transcription factors were identified as key intermediates of G protein-mediated homeostatic shifts. Statistical and mathematical model comparisons between A. thaliana and M. polymorpha revealed evolutionary conservation of transcriptional and metabolic networks over land plant evolution, whereas divergence has occurred in the function of plant-specific atypical XLG subunit. Taken together, our results indicate that the shifts in transcriptional and metabolic homeostasis at least partially act as the mechanisms of G protein-coupled stress responses that are conserved between two distantly related plants.
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Affiliation(s)
- Ting-Ying Wu
- Temasek Life Sciences Laboratory, Singapore, Singapore.
| | | | - Kulaporn Boonyaves
- Temasek Life Sciences Laboratory, Singapore, Singapore; Singapore-MIT Alliance for Research and Technology, Singapore, Singapore
| | - Isam Al-Darabsah
- Department of Mathematics, University of Manitoba, Winnipeg, MB, Canada
| | - Richalynn Leong
- Temasek Life Sciences Laboratory, Singapore, Singapore; Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore
| | - Alan M Jones
- Departments of Biology and Pharmacology, University of North Carolina, Chapel Hill, NC, USA
| | - Kimitsune Ishizaki
- Graduate School of Science, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Kang-Ling Liao
- Department of Mathematics, University of Manitoba, Winnipeg, MB, Canada.
| | - Daisuke Urano
- Temasek Life Sciences Laboratory, Singapore, Singapore; Singapore-MIT Alliance for Research and Technology, Singapore, Singapore; Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore.
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21
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Shen Y, Chi Y, Lu S, Lu H, Shi L. Involvement of JMJ15 in the dynamic change of genome-wide H3K4me3 in response to salt stress. FRONTIERS IN PLANT SCIENCE 2022; 13:1009723. [PMID: 36226276 PMCID: PMC9549339 DOI: 10.3389/fpls.2022.1009723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
Post-translational histone modifications play important roles in regulating chromatin structure and transcriptional regulation. Histone 3 lysine 4 trimethylation (H3K4me3) is a prominent histone modification mainly associated with gene activation. Here we showed that a histone demethylase, JMJ15, belonging to KDM5/JARID group, is involved in salt stress response in Arabidopsis thaliana. Jmj15 loss-of-function mutants displayed increased sensitivity to salt stress. Moreover, knockout of JMJ15 impaired the salt responsive gene expression program and affected H3K4me3 levels of many stress-related genes under salt-stressed condition. Importantly, we demonstrated that JMJ15 regulated the expression level of two WRKY transcription factors, WRKY46 and WRKY70, which were negatively involved in abiotic stress tolerance. Furthermore, JMJ15 directly bound to and demethylated H3K4me3 mark in the promoter and coding regions of WRKY46 and WRKY70, thereby repressing these two WRKY gene expression under salt stress. Overall, our study revealed a novel molecular function of the histone demethylase JMJ15 under salt stress in plants.
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Affiliation(s)
- Yuan Shen
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Yuhao Chi
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Shun Lu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Huijuan Lu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Lei Shi
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
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22
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Chen M, She Z, Aslam M, Liu T, Wang Z, Qi J, Niu X. Genomic insights of the WRKY genes in kenaf ( Hibiscus cannabinus L.) reveal that HcWRKY44 improves the plant's tolerance to the salinity stress. FRONTIERS IN PLANT SCIENCE 2022; 13:984233. [PMID: 36061791 PMCID: PMC9433988 DOI: 10.3389/fpls.2022.984233] [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: 07/01/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
The WRKY transcription factors (TFs) are among the most diverse TF families of plants. They are implicated in various processes related to plant growth and stress response. Kenaf (Hibiscus cannabinus L.), an important fiber crop, has many applications, including the phytoremediation of saline-alkaline soil. However, the roles of WRKY TFs in kenaf are rarely studied. In the present study, 46 kenaf WRKY genes were genome-widely identified and characterized by gene structure, phylogeny and expression pattern analysis. Furthermore, the HcWRKY44 gene was functionally characterized in Arabidopsis under salinity and drought stresses. HcWRKY44 is a nuclear-localized protein that is positively induced by salinity and drought, with roots showing maximum accumulation of its transcripts. Under NaCl and abscisic acid (ABA) stress conditions, plants overexpressing HcWRKY44 had higher germination rates, better root growth and increased survival than control plants; however, it did not improve the ability to withstand drought stress. Moreover, ABA signaling genes (ABI1, ABI2, and ABI5), ABA-responsive genes (ABF4, RD29B, COR15A, COR47, and RD22), stress-related genes (STZ, P5CS, and KIN1), and ionic homeostasis-related genes (SOS1, AHA1, AHA2, and HKT1) were positively induced in HcWRKY44 transgenic plants under NaCl treatment. These results suggest that HcWRKY44 improved plant's tolerance to salt stress but not osmotic stress through an ABA-mediated pathway. In summary, this study provides provided comprehensive information about HcWRKY genes and revealed that HcWRKY44 is involved in salinity tolerance and ABA signaling.
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Affiliation(s)
- Meixia Chen
- Industry and University Research Cooperation Demonstration Base in Fujian Province, College of Life Sciences, Ningde Normal University, Ningde, China
| | - Zeyuan She
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Mohammad Aslam
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ting Liu
- Industry and University Research Cooperation Demonstration Base in Fujian Province, College of Life Sciences, Ningde Normal University, Ningde, China
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zerong Wang
- Industry and University Research Cooperation Demonstration Base in Fujian Province, College of Life Sciences, Ningde Normal University, Ningde, China
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jianmin Qi
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiaoping Niu
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, China
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23
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Yang F, Lv G. Characterization of the gene expression profile response to drought stress in Haloxylon using PacBio single-molecule real-time and Illumina sequencing. FRONTIERS IN PLANT SCIENCE 2022; 13:981029. [PMID: 36051288 PMCID: PMC9424927 DOI: 10.3389/fpls.2022.981029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Haloxylon ammodendron and Haloxylon persicum are important drought-tolerant plants in northwest China. The whole-genome sequencing of H. ammodendron and H. persicum grown in their natural environment is incomplete, and their transcriptional regulatory network in response to drought environment remains unclear. To reveal the transcriptional responses of H. ammodendron and H. persicum to an arid environment, we performed single-molecule real-time (SMRT) and Illumina RNA sequencing. In total, 20,246,576 and 908,053 subreads and 435,938 and 210,334 circular consensus sequencing (CCS) reads were identified by SMRT sequencing of H. ammodendron and H. persicum, and 15,238 and 10,135 unigenes, respectively, were successfully obtained. In addition, 9,794 and 7,330 simple sequence repeats (SSRs) and 838 and 71 long non-coding RNAs were identified. In an arid environment, the growth of H. ammodendron was restricted; plant height decreased significantly; basal and branch diameters became thinner and hydrogen peroxide (H2O2) content and peroxidase (POD) activity were increased. Under dry and wet conditions, 11,803 and 15,217 differentially expressed genes (DEGs) were identified in H. ammodendron and H. persicum, respectively. There were 319 and 415 DEGs in the signal transduction pathways related to drought stress signal perception and transmission, including the Ca2+ signal pathway, the ABA signal pathway, and the MAPK signal cascade. In addition, 217 transcription factors (TFs) and 398 TFs of H. ammodendron and H. persicum were differentially expressed, including FAR1, MYB, and AP2/ERF. Bioinformatic analysis showed that under drought stress, the expression patterns of genes related to active oxygen [reactive oxygen species (ROS)] scavenging, functional proteins, lignin biosynthesis, and glucose metabolism pathways were altered. Thisis the first full-length transcriptome report concerning the responses of H. ammodendron and H. persicum to drought stress. The results provide a foundation for further study of the adaptation to drought stress. The full-length transcriptome can be used in genetic engineering research.
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Affiliation(s)
- Fang Yang
- School of Ecology and Environment, Xinjiang University, Ürümqi, China
- Key Laboratory of Oasis Ecology, Ministry of Education, Ürümqi, China
- Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Ürümqi, China
| | - Guanghui Lv
- School of Ecology and Environment, Xinjiang University, Ürümqi, China
- Key Laboratory of Oasis Ecology, Ministry of Education, Ürümqi, China
- Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Ürümqi, China
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24
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Zhang L, Zhang R, Ye X, Zheng X, Tan B, Wang W, Li Z, Li J, Cheng J, Feng J. Overexpressing VvWRKY18 from grapevine reduces the drought tolerance in Arabidopsis by increasing leaf stomatal density. JOURNAL OF PLANT PHYSIOLOGY 2022; 275:153741. [PMID: 35690029 DOI: 10.1016/j.jplph.2022.153741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 05/22/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The growth of grapevine [Vitis vinifera L.] is commonly limited by drought stress. The mechanisms by which grapevine copes with drought stress have not yet been extensively clarified. In this study, the drought and abscisic acid (ABA)-induced gene VvWRKY18 was demonstrated to decreased drought tolerance of Arabidopsis thaliana overexpression (VvWRKY18-OE) lines. Compared to wild-type plants, VvWRKY18-OE lines showed increased levels of malonaldehyde (MDA) and the reactive oxygen species (ROS) H2O2 and O2- decreased levels of proline, weakened activity of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), and decreased sensitivity to ABA with respect to stomatal closure.VvWRKY18-OE lines also showed an increase in stomatal density and a higher water loss rate. Negative regulators of stomatal development including SDD1, YDA, TMM, and MPK6, were downregulated in VvWRKY18-OE lines. Transcript levels of the stress-related genes DREB1A and CBF2 were significantly reduced in VvWRKY18-OE lines under drought stress. Taken together, these findings demonstrate that VvWRKY18 reduced drought tolerance in Arabidopsis. Our results contribute to understanding of the roles that WRKY genes play in drought stress and stomatal development.
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Affiliation(s)
- Langlang Zhang
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Rui Zhang
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Xia Ye
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Xianbo Zheng
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Bin Tan
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Wei Wang
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Zhiqian Li
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Jidong Li
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
| | - Jun Cheng
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China.
| | - Jiancan Feng
- College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China.
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25
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Su M, Wang S, Liu W, Yang M, Zhang Z, Wang N, Chen X. Interaction between MdWRKY55 and MdNAC17-L enhances salt tolerance in apple by activating MdNHX1 expression. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 320:111282. [PMID: 35643619 DOI: 10.1016/j.plantsci.2022.111282] [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: 12/03/2021] [Revised: 02/28/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
Salt stress greatly hinders plant growth and development, as well as crop production. To expand the planting area and choose salt-resistant varieties of apple (Malus×domestica), it is necessary to elucidate the salt-resistance mechanisms. Here, we identified a salt-responsive WRKY transcription factor, MdWRKY55. The overexpression of MdWRKY55 in apple calli significantly improved salt tolerance. MdWRKY55 bound to the MdNHX1 promoter, thereby enhancing its transcription. MdNAC17-L significantly promoted the effect of MdWRKY55 on the expression of downstream MdNHX1 by forming a protein complex. The functional analysis of MdWRKY55 provided valuable insights into the apple salt-tolerance regulatory network and established a theoretical basis for the molecular breeding of salt-tolerant apple.
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Affiliation(s)
- Mengyu Su
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China
| | - Shuo Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China
| | - Wenjun Liu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China
| | - Ming Yang
- College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, China
| | - Zongying Zhang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China
| | - Nan Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China
| | - Xuesen Chen
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, China.
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26
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Lu J, Sun L, Jin X, Islam MA, Guo F, Tang X, Zhao K, Hao H, Li N, Zhang W, Shi Y, Wang S, Sun D. Analysis of Physiological and Transcriptomic Differences between a Premature Senescence Mutant (GSm) and Its Wild-Type in Common Wheat (Triticum aestivum L.). BIOLOGY 2022; 11:biology11060904. [PMID: 35741425 PMCID: PMC9219967 DOI: 10.3390/biology11060904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Early leaf senescence is an important agronomic trait that affects crop yield and quality. To understand the molecular mechanism of early leaf senescence, a wheat (Triticum aestivum L.) premature leaf senescence mutant (GSm) and its wild type were employed in this study. We compared the physiological characteristics and transcriptome of wheat leaves between the wild type (WT) and the mutant at two-time points. Physiological characteristics and differentially expressed gene (DEG) analysis revealed many genes and metabolic pathways that were closely related to senescence. These results will not only support further gene cloning and functional analysis of GSm, but also facilitate the study of leaf senescence in wheat. Abstract Premature leaf senescence has a profound influence on crop yield and quality. Here, a stable premature senescence mutant (GSm) was obtained from the common wheat (Triticum aestivum L.) cultivar Chang 6878 by mutagenesis with ethyl methanesulfonate. The differences between the GSm mutant and its wild-type (WT) were analyzed in terms of yield characteristics, photosynthetic fluorescence indices, and senescence-related physiological parameters. RNA sequencing was used to reveal gene expression differences between GSm and WT. The results showed that the yield of GSm was considerably lower than that of WT. The net photosynthetic rate, transpiration rate, maximum quantum yield, non-photochemical quenching coefficient, photosynthetic electron transport rate, soluble protein, peroxidase activity, and catalase activity all remarkably decreased in flag leaves of GSm, whereas malondialdehyde content distinctively increased compared with those of WT. The analysis of differentially expressed genes indicated blockade of chlorophyll and carotenoid biosynthesis, accelerated degradation of chlorophyll, and diminished photosynthetic capacity in mutant leaves; brassinolide might facilitate chlorophyll breakdown and consequently accelerate leaf senescence. NAC genes positively regulated the senescence process. Compared with NAC genes, expression of WRKY and MYB genes was induced earlier in the mutant possibly due to increased levels of reactive oxygen species and plant hormones (e.g., brassinolide, salicylic acid, and jasmonic acid), thereby accelerating leaf senescence. Furthermore, the antioxidant system played a role in minimizing oxidative damage in the mutant. These results provides novel insight into the molecular mechanisms of premature leaf senescence in crops.
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27
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Arce RC, Carrillo N, Pierella Karlusich JJ. The chloroplast redox-responsive transcriptome of solanaceous plants reveals significant nuclear gene regulatory motifs associated to stress acclimation. PLANT MOLECULAR BIOLOGY 2022; 108:513-530. [PMID: 35044587 DOI: 10.1007/s11103-022-01240-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Transcriptomes of solanaceous plants expressing a plastid-targeted antioxidant protein were analysed to identify chloroplast redox networks modulating the expression of nuclear genes associated with stress acclimation. Plastid functions depend on the coordinated expression of nuclear genes, many of them associated to developmental and stress response pathways. Plastid-generated signals mediate this coordination via retrograde signaling, which includes sensing of chloroplast redox state and levels of reactive oxygen species (ROS), although it remains a poorly understood process. Chloroplast redox poise and ROS build-up can be modified by recombinant expression of a plastid-targeted antioxidant protein, i.e., cyanobacterial flavodoxin, with the resulting plants displaying increased tolerance to multiple environmental challenges. Here we analysed the transcriptomes of these flavodoxin-expressing plants to study the coordinated transcriptional responses of the nucleus to the chloroplast redox status and ROS levels during normal growth and stress responses (drought or biotic stress) in tobacco and potato, members of the economically important Solanaceae family. We compared their transcriptomes against those from stressed and mutant plants accumulating ROS in different subcellular compartments and found distinct ROS-related imprints modulated by flavodoxin expression and/or stress. By introducing our datasets in a large-scale interaction network, we identified transcriptional factors related to ROS and stress responses potentially involved in flavodoxin-associated signaling. Finally, we discovered identical cis elements in the promoters of many genes that respond to flavodoxin in the same direction as in wild-type plants under stress, suggesting a priming effect of flavodoxin before stress manifestation. The results provide a genome-wide picture illustrating the relevance of chloroplast redox status on biotic and abiotic stress responses and suggest new cis and trans targets to generate stress-tolerant solanaceous crops.
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Affiliation(s)
- Rocío C Arce
- Instituto de Biología Molecular y Celular de Rosario (IBR-UNR/CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), 2000, Rosario, Argentina
| | - Néstor Carrillo
- Instituto de Biología Molecular y Celular de Rosario (IBR-UNR/CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), 2000, Rosario, Argentina
| | - Juan J Pierella Karlusich
- Ecole Normale Supérieure, PSL Research University, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS UMR 8197, INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
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Pogány M, Dankó T, Hegyi-Kaló J, Kámán-Tóth E, Szám DR, Hamow KÁ, Kalapos B, Kiss L, Fodor J, Gullner G, Váczy KZ, Barna B. Redox and Hormonal Changes in the Transcriptome of Grape (Vitis vinifera) Berries during Natural Noble Rot Development. PLANTS 2022; 11:plants11070864. [PMID: 35406844 PMCID: PMC9003472 DOI: 10.3390/plants11070864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 01/18/2023]
Abstract
Noble rot is a favorable form of the interaction between grape (Vitis spp.) berries and the phytopathogenic fungus Botrytis cinerea. The transcriptome pattern of grapevine cells subject to natural noble rot development in the historic Hungarian Tokaj wine region has not been previously published. Furmint, a traditional white Tokaj variety suited to develop great quality noble rot was used in the experiments. Exploring a subset of the Furmint transcriptome redox and hormonal changes distinguishing between noble rot and bunch rot was revealed. Noble rot is defined by an early spike in abscisic acid (ABA) accumulation and a pronounced remodeling of ABA-related gene expression. Transcription of glutathione S-transferase isoforms is uniquely upregulated, whereas gene expression of some sectors of the antioxidative apparatus (e.g., catalases, carotenoid biosynthesis) is downregulated. These mRNA responses are lacking in berries exposed to bunch rot. Our results help to explain molecular details behind the fine and dynamic balance between noble rot and bunch rot development.
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Affiliation(s)
- Miklós Pogány
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
- Correspondence:
| | - Tamás Dankó
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Júlia Hegyi-Kaló
- Food and Wine Research Institute, Eszterházy Károly Catholic University, 3300 Eger, Hungary; (J.H.-K.); (K.Z.V.)
| | - Evelin Kámán-Tóth
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Dorottya Réka Szám
- Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary;
| | - Kamirán Áron Hamow
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Balázs Kalapos
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Levente Kiss
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
- Centre for Crop Health, University of Southern Queensland, Toowoomba, QLD 4350, Australia
| | - József Fodor
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Gábor Gullner
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
| | - Kálmán Zoltán Váczy
- Food and Wine Research Institute, Eszterházy Károly Catholic University, 3300 Eger, Hungary; (J.H.-K.); (K.Z.V.)
| | - Balázs Barna
- Centre for Agricultural Research, 2462 Martonvásár, Hungary; (T.D.); (E.K.-T.); (K.Á.H.); (B.K.); or (L.K.); (J.F.); (G.G.); (B.B.)
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Li Z, Zhu L, Zhao F, Li J, Zhang X, Kong X, Wu H, Zhang Z. Plant Salinity Stress Response and Nano-Enabled Plant Salt Tolerance. FRONTIERS IN PLANT SCIENCE 2022; 13:843994. [PMID: 35392516 PMCID: PMC8981240 DOI: 10.3389/fpls.2022.843994] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/25/2022] [Indexed: 05/27/2023]
Abstract
The area of salinized land is gradually expanding cross the globe. Salt stress seriously reduces the yield and quality of crops and endangers food supply to meet the demand of the increased population. The mechanisms underlying nano-enabled plant tolerance were discussed, including (1) maintaining ROS homeostasis, (2) improving plant's ability to exclude Na+ and to retain K+, (3) improving the production of nitric oxide, (4) increasing α-amylase activities to increase soluble sugar content, and (5) decreasing lipoxygenase activities to reduce membrane oxidative damage. The possible commonly employed mechanisms such as alleviating oxidative stress damage and maintaining ion homeostasis were highlighted. Further, the possible role of phytohormones and the molecular mechanisms in nano-enabled plant salt tolerance were discussed. Overall, this review paper aims to help the researchers from different field such as plant science and nanoscience to better understand possible new approaches to address salinity issues in agriculture.
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Affiliation(s)
- Zengqiang Li
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- Henan Collaborative Innovation Centre of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Lan Zhu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fameng Zhao
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiaqi Li
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xin Zhang
- Henan Collaborative Innovation Centre of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Xiangjun Kong
- Henan Collaborative Innovation Centre of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Honghong Wu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Zhiyong Zhang
- Henan Collaborative Innovation Centre of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
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Lee FC, Yeap WC, Appleton DR, Ho CL, Kulaveerasingam H. Identification of drought responsive Elaeis guineensis WRKY transcription factors with sensitivity to other abiotic stresses and hormone treatments. BMC Genomics 2022; 23:164. [PMID: 35219299 PMCID: PMC8882277 DOI: 10.1186/s12864-022-08378-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/08/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The ability of plants to withstand and thrive in an adverse environment is crucial to ensure their survivability and yield performance. The WRKY transcription factors (TFs) have crucial roles in plant growth, development and stress response, particularly drought stress. In oil palm, drought is recognized as one of the major yield limiting factors. However, the roles of WRKY TFs in the drought response of oil palm is unclear. RESULTS Herein, we studied the transcriptome of drought treated oil palm leaf and identified 40 differentially expressed genes (DEGs) of WRKY TFs, of which 32 DEGs were upregulated and 8 DEGs were downregulated in response to drought stress in oil palm. They were categorized into Groups I to IV based on the numbers of WRKY domain and the structural difference in the zinc finger domain. Multiple stress- and hormone-responsive cis-regulatory elements were detected in the drought responsive oil palm EgWRKY (Dro-EgWRKY) genes. Fourteen of the 15 selected oil palm WRKY (EgWRKY) genes demonstrated a tissue-specific expression profile except for EgWRKY28 (Group I), which was expressed in all tissues tested. The expression levels of 15 candidate EgWRKYs were upregulated upon salinity and heat treatments, while several genes were also inducible by abscisic acid, methyl jasmonate, salicylic acid and hydrogen peroxide treatments. Members of the Group III WRKY TFs including EgWRKY07, 26, 40, 52, 59, 73 and 81 displayed multiple roles in drought- and salinity-response under the modulation of phytohormones. CONCLUSIONS EgWRKY TFs of oil palm are involved in phytohormones and abiotic stress responses including drought, salinity and heat. EgWRKY07, 26, 59 and 81 from Group III maybe important regulators in modulating responses of different abiotic stresses. Further functional analysis is required to understand the underlying mechanism of WRKY TFs in the regulatory network of drought stress.
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Affiliation(s)
- Fong Chin Lee
- Sime Darby Plantation Technology Centre Sdn. Bhd, 43400, Serdang, Selangor, Malaysia.
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
| | - Wan Chin Yeap
- Sime Darby Plantation Technology Centre Sdn. Bhd, 43400, Serdang, Selangor, Malaysia
| | - David Ross Appleton
- Sime Darby Plantation Technology Centre Sdn. Bhd, 43400, Serdang, Selangor, Malaysia
| | - Chai-Ling Ho
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
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Tak H, Negi S, Ganapathi TR. The 5'-upstream region of WRKY18 transcription factor from banana is a stress-inducible promoter with strong expression in guard cells. PHYSIOLOGIA PLANTARUM 2021; 173:1335-1350. [PMID: 33421142 DOI: 10.1111/ppl.13326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/07/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
Increasing crop productivity in an ever-changing environmental scenario is a major challenge for maintaining the food supply worldwide. Generation of crops having broad-spectrum pathogen resistance with the ability to cope with water scarcity is the only solution to feed the expanding world population. Stomatal closure has implications on pathogen colonization and drought tolerance. Recent studies have provided novel insights into networks involved in stomatal closure which is being used in biotechnological applications for improving crop endurance. Despite that genetic engineering of stomata requires guard cell preferred or specific regulatory regions to avoid undesirable side effects. In the present study, we describe the 5'-upstream regulatory region of the WRKY18 transcription factor of banana and functionally analyzed its stress meditated activation and strong guard cell preferred activity. Expression of MusaWRKY18 is augmented in leaves of banana cultivars Karibale Monthan, Rasthali and Grand Nain under multiple stress conditions suggesting its role in stress responses of banana plants. Transgenic tobacco lines harboring PMusaWRKY18 -β-D-glucuronidase (GUS) were regenerated and GUS staining demonstrated substantial GUS expression in guard cells which corroborates with multiple Dof1 binding cis-elements in PMusaWRKY18 . Fluorescent β-galactosidase assay demonstrated the stress-mediated strong induction profiles of PMusaWRKY18 at different time points in transgenic tobacco lines exposed to drought, high-salinity, cold, and applications of abscisic acid, salicylic acid, methyl jasmonate, and ethephon. This study sheds novel insights into guard cell preferred expression of WRKY genes under stress and confirm the utility of PMusaWRKY18 for exploring guard cell functions and guard cell engineering.
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Affiliation(s)
- Himanshu Tak
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Sanjana Negi
- Department of Biotechnology, University of Mumbai, Mumbai, India
| | - Thumballi R Ganapathi
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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32
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Li Q, Wang M, Fang L. BASIC PENTACYSTEINE2 negatively regulates osmotic stress tolerance by modulating LEA4-5 expression in Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 168:373-380. [PMID: 34710757 DOI: 10.1016/j.plaphy.2021.10.030] [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: 07/28/2021] [Revised: 10/05/2021] [Accepted: 10/20/2021] [Indexed: 05/28/2023]
Abstract
Osmotic stress substantially affects plant growth and development. Study of plant transcription factors involved in osmotic stress can enhance our understanding of the mechanisms of plant osmotic stress tolerance and how the tolerance of plants to osmotic stress can be improved. Here, we identified the specific function of Arabidopsis thaliana BARLEY B RECOMBINANT/BASIC PENTACYSTEINE transcription factor, BPC2, in the osmotic stress response. Phenotypic analysis showed that loss-of-function of BPC2 led to an increase in osmotic stress tolerance in the seedling growth stage. Physiological analysis showed that mutation of BPC2 in Arabidopsis alleviated osmotic-induced increases in H2O2 accumulation, the malondialdehyde (MDA) content, and percent electrolyte leakage. BPC2 was localized in the nucleus. RNA-seq and qRT-PCR analysis showed that BPC2 could negatively regulate the expression of late embryogenesis abundant (LEA) genes (LEA3, LEA4-2, and LEA4-5). Further analysis showed that BPC2 could directly bind to the promoter of LEA4-5 in vitro and in vivo. Overexpression of BPC2 enhanced hypersensitivity to osmotic stress in the seedling growth stage. Overexpression of BPC2 led to decreases in LEA4-5 expression and aggravated osmotic-induced increases in H2O2 accumulation, the MDA content, and percent electrolyte leakage. Overall, our results indicate that BPC2 negatively regulates LEA4-5 expression to modulate osmotic-induced H2O2 accumulation, the MDA content, and percent electrolyte leakage, all of which affect the osmotic stress response in Arabidopsis thaliana.
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Affiliation(s)
- Qiaolu Li
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong, 510650, China
| | - Mengmeng Wang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing, 210042, China
| | - Lin Fang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong, 510650, China.
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Shan D, Wang C, Song H, Bai Y, Zhang H, Hu Z, Wang L, Shi K, Zheng X, Yan T, Sun Y, Zhu Y, Zhang T, Zhou Z, Guo Y, Kong J. The MdMEK2-MdMPK6-MdWRKY17 pathway stabilizes chlorophyll levels by directly regulating MdSUFB in apple under drought stress. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:814-828. [PMID: 34469599 DOI: 10.1111/tpj.15480] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/16/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Drought stress severely limits plant growth and production in apple (Malus domestica Borkh.). To breed water-deficit-tolerant apple cultivars that maintain high yields under slight or moderate drought stress, it is important to uncover the mechanisms underlying the transcriptional regulation of chlorophyll metabolism in apple. To explore this mechanism, we generated transgenic 'Gala3' apple plants with overexpression or knockdown of MdWRKY17, which encodes a transcription factor whose expression is significantly induced by water deficit. Under moderate drought stress, we observed significantly higher chlorophyll contents and photosynthesis rates in overexpression transgenic plants than in controls, whereas these were dramatically lower in the knockdown lines. MdWRKY17 directly regulates MdSUFB expression, as demonstrated by in vitro and in vivo experiments. MdSUFB, a key component of the sulfur mobilization (SUF) system that assembles Fe-S clusters, is essential for inhibiting chlorophyll degradation and stabilizing electron transport during photosynthesis, leading to higher chlorophyll levels in transgenic apple plants overexpressing MdWRKY17. The activated MdMEK2-MdMPK6 cascade by water-deficit stress fine-tunes the MdWRKY17-MdSUFB pathway by phosphorylating MdWRKY17 under water-deficit stress. This fine-tuning of the MdWRKY17-MdSUFB regulatory pathway is important for balancing plant survival and yield losses (chlorophyll degradation and reduced photosynthesis) under slight or moderate drought stress. The phosphorylation by MdMEK2-MdMPK6 activates the MdWRKY17-MdSUFB pathway at S66 (identified by LC-MS), as demonstrated by in vitro and in vivo experiments. Our findings reveal that the MdMEK2-MdMPK6-MdWRKY17-MdSUFB pathway stabilizes chlorophyll levels under moderate drought stress, which could facilitate the breeding of apple varieties that maintain high yields under drought stress.
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Affiliation(s)
- Dongqian Shan
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Chanyu Wang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Handong Song
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yixue Bai
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Haixia Zhang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Zehui Hu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Lin Wang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Kun Shi
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiaodong Zheng
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Tianci Yan
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yanzhao Sun
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yunpeng Zhu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Tong Zhang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Zhaoyang Zhou
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yan Guo
- College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jin Kong
- College of Horticulture, China Agricultural University, Beijing, 100193, China
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Sun L, Wei YQ, Wu KH, Yan JY, Xu JN, Wu YR, Li GX, Xu JM, Harberd NP, Ding ZJ, Zheng SJ. Restriction of iron loading into developing seeds by a YABBY transcription factor safeguards successful reproduction in Arabidopsis. MOLECULAR PLANT 2021; 14:1624-1639. [PMID: 34116221 DOI: 10.1016/j.molp.2021.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 05/13/2021] [Accepted: 06/06/2021] [Indexed: 06/12/2023]
Abstract
Iron (Fe) storage in plant seeds is not only necessary for seedling establishment following germination but is also a major source of dietary Fe for humans and other animals. Accumulation of Fe in seeds is known to be low during early seed development. However, the underlying mechanism and biological significance remain elusive. Here, we show that reduced expression of Arabidopsis YABBY transcription factor INNER NO OUTER (INO) increases embryonic Fe accumulation, while transgenic overexpression of INO results in the opposite effect. INO is highly expressed during early seed development, and decreased INO expression increases the expression of NATURAL RESISTANCE-ASSOCIATED MACROPHAGE PROTEIN 1 (NRAMP1), which encodes a transporter that contributes to seed Fe loading. The relatively high embryonic Fe accumulation conferred by decreased INO expression is rescued by the nramp1 loss-of-function mutation. We further demonstrated that INO represses NRAMP1 expression by binding to NRAMP1-specific promoter region. Interestingly, we found that excessive Fe loading into developing seeds of ino mutants results in greater oxidative damage, leading to increased cell death and seed abortion, a phenotype that can be rescued by the nramp1 mutation. Taken together, these results indicate that INO plays an important role in safeguarding reproduction by reducing Fe loading into developing seeds by repressing NRAMP1 expression.
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Affiliation(s)
- Li Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yun Qi Wei
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Kang Hao Wu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jing Ying Yan
- Agricultural Experimental Station, Zhejiang University, Hangzhou 310058, China
| | - Jie Na Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yun Rong Wu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Gui Xin Li
- College of Agronomy and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Ji Ming Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Nicholas P Harberd
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China; Department of Plant Science, University of Oxford, Oxford OX1 3RB, UK
| | - Zhong Jie Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Shao Jian Zheng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China; Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642.
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Wang J, Li Y, Wu T, Miao C, Xie M, Ding B, Li M, Bao S, Chen X, Hu Z, Xie X. Single-cell-type transcriptomic analysis reveals distinct gene expression profiles in wheat guard cells in response to abscisic acid. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:1087-1099. [PMID: 34551854 DOI: 10.1071/fp20368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 07/05/2021] [Indexed: 05/24/2023]
Abstract
Stomatal closure, driven by shrinking guard cells in response to the accumulation of abscisic acid (ABA) under drought stress, has a great impact on plant growth and environmental acclimation. However, the molecular regulatory mechanism underlying the turgor alteration of guard cells remains elusive, especially in cereal grasses. Here, we develop a modified enzyme digestion-based approach for the isolation of wheat (Triticum aestivum L.) guard cells. With this approach, we can remove mesophyll, pavement cells and subsidiary cells successively from the epidermis of the trichomeless coleoptile in wheat and preserve guard cells on the cuticle layers in an intact and physiologically active conditions. Using a robust single-cell-type RNA sequencing analysis, we discovered 9829 differentially expressed genes (DEGs) as significantly up- or down-regulated in guard cells in response to ABA treatment. Transcriptome analysis revealed a large percent of DEGs encoding multiple phytohormone signalling pathways, transporters, calcium signalling components, protein kinases and other ABA signalling-related proteins, which are primarily involved in key signalling pathways in ABA-regulated stomatal control and stress response. Our findings provide valuable resource for investigating the transcriptional regulatory mechanism underlying wheat guard cells in response to ABA.
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Affiliation(s)
- Junbin Wang
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China; and College of Basic Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Yang Li
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Tianwen Wu
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Chen Miao
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China
| | - Meijuan Xie
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Bo Ding
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Ming Li
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Shuguang Bao
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Xiaoqiang Chen
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
| | - Zhaorong Hu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE) and Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Xiaodong Xie
- International Joint Center for the Mechanismic Dissection and Genetic Improvement of Crop Stress Tolerance, College of Agriculture & Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300392, China
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Li B, Zeng Y, Cao W, Zhang W, Cheng L, Yin H, Wu Q, Wang X, Huang Y, Lau WCY, Yao ZP, Guo Y, Jiang L. A distinct giant coat protein complex II vesicle population in Arabidopsis thaliana. NATURE PLANTS 2021; 7:1335-1346. [PMID: 34621047 DOI: 10.1038/s41477-021-00997-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 07/29/2021] [Indexed: 05/20/2023]
Abstract
Plants live as sessile organisms with large-scale gene duplication events and subsequent paralogue divergence during evolution. Notably, plant paralogues are expressed tissue-specifically and fine-tuned by phytohormones during various developmental processes. The coat protein complex II (COPII) is a highly conserved vesiculation machinery mediating protein transport from the endoplasmic reticulum to the Golgi apparatus in eukaryotes1. Intriguingly, Arabidopsis COPII paralogues greatly outnumber those in yeast and mammals2-6. However, the functional diversity and underlying mechanism of distinct COPII paralogues in regulating protein endoplasmic reticulum export and coping with various adverse environmental stresses are poorly understood. Here we characterize a novel population of COPII vesicles produced in response to abscisic acid, a key phytohormone regulating abiotic stress responses in plants. These hormone-induced giant COPII vesicles are regulated by an Arabidopsis-specific COPII paralogue and carry stress-related channels/transporters for alleviating stresses. This study thus provides a new mechanism underlying abscisic acid-induced stress responses via the giant COPII vesicles and answers a long-standing question on the evolutionary significance of gene duplications in Arabidopsis.
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Affiliation(s)
- Baiying Li
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Yonglun Zeng
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Wenhan Cao
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Wenxin Zhang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Lixin Cheng
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
- Department of Critical Care Medicine, Shenzhen People's Hospital, The Second Clinical Medicine College of Ji'nan University, Shenzhen, China
| | - Haidi Yin
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Qian Wu
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Xiangfeng Wang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yan Huang
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China
| | - Wilson Chun Yu Lau
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Zhong-Ping Yao
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Yusong Guo
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China.
| | - Liwen Jiang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China.
- CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.
- Institute of Plant Molecular Biology and Agricultural Biotechnology, The Chinese University of Hong Kong, Hong Kong, China.
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Maize WRKY Transcription Factor ZmWRKY79 Positively Regulates Drought Tolerance through Elevating ABA Biosynthesis. Int J Mol Sci 2021; 22:ijms221810080. [PMID: 34576244 PMCID: PMC8468953 DOI: 10.3390/ijms221810080] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 11/17/2022] Open
Abstract
Drought stress causes heavy damages to crop growth and productivity under global climatic changes. Transcription factors have been extensively studied in many crops to play important roles in plant growth and defense. However, there is a scarcity of studies regarding WRKY transcription factors regulating drought responses in maize crops. Previously, ZmWRKY79 was identified as the regulator of maize phytoalexin biosynthesis with inducible expression under different elicitation. Here, we elucidated the function of ZmWRKY79 in drought stress through regulating ABA biosynthesis. The overexpression of ZmWRKY79 in Arabidopsis improved the survival rate under drought stress, which was accompanied by more lateral roots, lower stomatal aperture, and water loss. ROS scavenging was also boosted by ZmWRKY79 to result in less H2O2 and MDA accumulation and increased antioxidant enzyme activities. Further analysis detected more ABA production in ZmWRKY79 overexpression lines under drought stress, which was consistent with up-regulated ABA biosynthetic gene expression by RNA-seq analysis. ZmWRKY79 was observed to target ZmAAO3 genes in maize protoplast through acting on the specific W-boxes of the corresponding gene promoters. Virus-induced gene silencing of ZmWRKY79 in maize resulted in compromised drought tolerance with more H2O2 accumulation and weaker root system architecture. Together, this study substantiates the role of ZmWRKY79 in the drought-tolerance mechanism through regulating ABA biosynthesis, suggesting its broad functions not only as the regulator in phytoalexin biosynthesis against pathogen infection but also playing the positive role in abiotic stress response, which provides a WRKY candidate gene to improve drought tolerance for maize and other crop plants.
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Wani SH, Anand S, Singh B, Bohra A, Joshi R. WRKY transcription factors and plant defense responses: latest discoveries and future prospects. PLANT CELL REPORTS 2021; 40:1071-1085. [PMID: 33860345 DOI: 10.1007/s00299-021-02691-8] [Citation(s) in RCA: 183] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 03/28/2021] [Indexed: 05/24/2023]
Abstract
WRKY transcription factors are among the largest families of transcriptional regulators. In this review, their pivotal role in modulating various signal transduction pathways during biotic and abiotic stresses is discussed. Transcription factors (TFs) are important constituents of plant signaling pathways that define plant responses against biotic and abiotic stimuli besides playing a role in response to internal signals which coordinate different interacting partners during developmental processes. WRKY TFs, deriving their nomenclature from their signature DNA-binding sequence, represent one of the largest families of transcriptional regulators found exclusively in plants. By modulating different signal transduction pathways, these TFs contribute to various plant processes including nutrient deprivation, embryogenesis, seed and trichome development, senescence as well as other developmental and hormone-regulated processes. A growing body of research suggests transcriptional regulation of WRKY TFs in adapting plant to a variety of stressed environments. WRKY TFs can regulate diverse biological functions from receptors for pathogen triggered immunity, modulator of chromatin for specific interaction and signal transfer through a complicated network of genes. Latest discoveries illustrate the interaction of WRKY proteins with other TFs to form an integral part of signaling webs that regulate several seemingly disparate processes and defense-related genes, thus establishing their significant contributions to plant immune response. The present review starts with a brief description on the structural characteristics of WRKY TFs followed by the sections that present recent evidence on their roles in diverse biological processes in plants. We provide a comprehensive overview on regulatory crosstalks involving WRKY TFs during multiple stress responses in plants and future prospects of WRKY TFs as promising molecular diagnostics for enhancing crop improvement.
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Affiliation(s)
- Shabir H Wani
- Mountain Research Centre for Field Crops, Sher‑e‑Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, J&K 192101, India
| | - Shruti Anand
- Mountain Research Centre for Field Crops, Sher‑e‑Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, J&K 192101, India
| | - Balwant Singh
- National Institute for Plant Biotechnology, New Delhi, 110012, India
| | - Abhishek Bohra
- Crop Improvement Division, ICAR-Indian Institute of Pulses Research (IIPR), Kanpur, Uttar Pradesh, 208024, India
| | - Rohit Joshi
- Division of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad, Uttar Pradesh, 201002, India.
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Identification of the Group III WRKY Subfamily and the Functional Analysis of GhWRKY53 in Gossypium hirsutum L. PLANTS 2021; 10:plants10061235. [PMID: 34204463 PMCID: PMC8233714 DOI: 10.3390/plants10061235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 11/30/2022]
Abstract
WRKY transcription factors had multiple functions in plant secondary metabolism, leaf senescence, fruit ripening, adaptation to biotic and abiotic stress, and plant growth and development. However, knowledge of the group III WRKY subfamily in fiber development in upland cotton (Gossypium hirsutum L.) is largely absent. Previous studies have shown that there were 21 putative group III WRKY members in G. hirsutum L. These putative amino acid sequences from the III WRKY group were phylogenetically clustered into three clades. Multiple alignment, conservative motif analysis, and gene structure analysis showed that the members clustered together in the phylogenetic tree had similar motifs and gene structures. Expression pattern analysis revealed that variation in the expression levels of these genes in different tissues and fiber development stages. To better understand the functions of putative group III WRKY genes in G. hirsutum L., we selected the cotton fiber initiation-related gene GhWRKY53 for cloning and functional identification. The subcellular localization experiment of GhWRKY53 in Nicotiana tabacum leaves showed that it was located in the nucleus. The heterologous expression of GhWRKY53 in Arabidopsis thaliana could significantly increase the density of trichomes. Twelve proteins that interacted with GhWRKY53 were screened from the cotton fiber cDNA library by yeast two-hybrid experiment. This study findings lay a foundation for further research on the role of the GhWRKY53 during cotton fiber development and provide a new insight for further studying putative group III WRKY genes in G. hirsutum L. Our research results also provide vital information for the genetic mechanism of high-quality cotton fiber formation and essential genetic resources for cotton fiber quality improvement.
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Ahammed GJ, Li X, Mao Q, Wan H, Zhou G, Cheng Y. The SlWRKY81 transcription factor inhibits stomatal closure by attenuating nitric oxide accumulation in the guard cells of tomato under drought. PHYSIOLOGIA PLANTARUM 2021; 172:885-895. [PMID: 33063343 DOI: 10.1111/ppl.13243] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 05/07/2023]
Abstract
The WRKY transcription factors (TFs) play multifaceted roles in plant growth, development, and stress response. Previously, we found that SlWRKY81 negatively regulates tomato tolerance to drought; however, the mechanisms of stomatal regulation in response to drought remain largely unclear. Here, we showed that drought-induced upregulation in the SlWRKY81 transcripts induced photoinhibition and reduced the net photosynthetic rate in tomato leaves. However, silencing SlWRKY81 alleviated those inhibitions and minimized the drought-induced damage. A time-course of water loss showed that SlWRKY81 silencing significantly and consistently reduced leaf water loss, suggesting a role for SlWRKY81 in stomatal movement. Further analysis using light microscopy revealed that SlWRKY81 silencing significantly decreased stomatal aperture and increased the ratio of length to width of stomata under drought. Both biochemical assay and confocal laser scanning microscopy demonstrated that drought-induced upregulation in SlWRKY81 expression inhibited the nitric oxide (NO) accumulation in the guard cells, which was attributed to the simultaneous declines in the activity of nitrate reductase (NR) and NR expression in tomato leaves. The inspection of 3-kb sequences upstream of the predicted transcriptional start site of the NR identified three copies of the core W-box (TTGACC/T) sequence in the promoter region, indicating possible targets of SlWRKY81. Taken together, these data suggest that SlWRKY81 potentially represses NR transcription and thus reduces NO accumulation to attenuate stomatal closure and subsequent drought tolerance. These findings provide an improved understanding of the mechanism of WRKY-induced regulation of stomatal closure, which can be exploited in the future to enhance drought tolerance in crops.
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Affiliation(s)
- Golam Jalal Ahammed
- College of Forestry, Henan University of Science and Technology, Luoyang, China
| | - Xin Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Qi Mao
- College of Forestry, Henan University of Science and Technology, Luoyang, China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hongjian Wan
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Guozhi Zhou
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yuan Cheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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A WRKY Transcription Factor, EjWRKY17, from Eriobotrya japonica Enhances Drought Tolerance in Transgenic Arabidopsis. Int J Mol Sci 2021; 22:ijms22115593. [PMID: 34070474 PMCID: PMC8197471 DOI: 10.3390/ijms22115593] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/11/2021] [Accepted: 05/18/2021] [Indexed: 12/19/2022] Open
Abstract
The WRKY gene family, which is one of the largest transcription factor (TF) families, plays an important role in numerous aspects of plant growth and development, especially in various stress responses. However, the functional roles of the WRKY gene family in loquat are relatively unknown. In this study, a novel WRKY gene, EjWRKY17, was characterized from Eriobotrya japonica, which was significantly upregulated in leaves by melatonin treatment during drought stress. The EjWRKY17 protein, belonging to group II of the WRKY family, was localized in the nucleus. The results indicated that overexpression of EjWRKY17 increased cotyledon greening and root elongation in transgenic Arabidopsis lines under abscisic acid (ABA) treatment. Meanwhile, overexpression of EjWRKY17 led to enhanced drought tolerance in transgenic lines, which was supported by the lower water loss, limited electrolyte leakage, and lower levels of reactive oxygen species (ROS) and malondialdehyde (MDA). Further investigations showed that overexpression of EjWRKY17 promoted ABA-mediated stomatal closure and remarkably up-regulated ABA biosynthesis and stress-related gene expression in transgenic lines under drought stress. Overall, our findings reveal that EjWRKY17 possibly acts as a positive regulator in ABA-regulated drought tolerance.
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Mao Z, Jiang H, Wang S, Wang Y, Yu L, Zou Q, Liu W, Jiang S, Wang N, Zhang Z, Chen X. The MdHY5-MdWRKY41-MdMYB transcription factor cascade regulates the anthocyanin and proanthocyanidin biosynthesis in red-fleshed apple. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 306:110848. [PMID: 33775373 DOI: 10.1016/j.plantsci.2021.110848] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/18/2021] [Accepted: 02/03/2021] [Indexed: 05/25/2023]
Abstract
Red-fleshed apple fruits are popular because of their high flavonoid content. Although MdMYB10 and its homologs have been identified as crucial regulators of the fruit coloring process, other transcription factors (TFs) contributing to the differences in flesh coloration have not been fully characterized. In this study, we investigated the regulatory effects of MdWRKY41 on anthocyanin and proanthocyanidin (PA) synthesis in red-fleshed apples. The overexpression of MdWRKY41 in red-fleshed apple calli inhibited anthocyanin and PA accumulation by downregulating the expression of a MYB TF gene (MdMYB12) and specific structural genes (MdLAR, MdUFGT, and MdANR). Furthermore, MdWRKY41 was shown to interact with MdMYB16 to form a complex that can further suppress MdANR and MdUFGT expression. Interestingly, MdWRKY41 was targeted by the photoresponse factor MdHY5 and inhibited its transcription. Overall, our findings provide insights into a novel MdHY5-MdWRKY41-MdMYB regulatory module influencing anthocyanin and PA synthesis in red-fleshed apple fruits.
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Affiliation(s)
- Zuolin Mao
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Huiyan Jiang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Shuo Wang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Yicheng Wang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Lei Yu
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Qi Zou
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Wenjun Liu
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Shenghui Jiang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Nan Wang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China
| | - Zongying Zhang
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China.
| | - Xuesen Chen
- College of Horticulture, Shandong Agricultural University, Taian, 271000, Shandong, China.
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Wu L, Chang Y, Wang L, Wu J, Wang S. Genetic dissection of drought resistance based on root traits at the bud stage in common bean. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:1047-1061. [PMID: 33426592 DOI: 10.1007/s00122-020-03750-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
A whole-genome resequencing-derived SNP dataset used for genome-wide association analysis revealed 196 loci significantly associated with drought stress based on root traits. Candidate genes identified in the regions of these loci include homologs of known drought resistance genes in A. thaliana. Drought is the main abiotic constraint of the production of common bean. Improved adaptation to drought environments has become a main goal of crop breeding due to the increasing scarcity of water that will occur in the future. The overall objective of our study was to identify genomic regions associated with drought resistance based on root traits using genome-wide association analysis. A natural population of 438 common bean accessions was evaluated for root traits: root surface area, root average diameter, root volume, total root length, taproot length, lateral root number, root dry weight, lateral root length, special root weight/length, using seed germination pouches under drought conditions and in well-watered environments. The coefficient of variation ranged from 11.24% (root average diameter) to 38.19% (root dry weight) in the well-watered environment and from 9.61% (root average diameter) to 39.05% (lateral root length) under drought stress. A whole-genome resequencing-derived SNP dataset revealed 196 loci containing 230 candidate SNPs associated with drought resistance. Seventeen candidate SNPs were simultaneously associated with more than two traits. Forty-one loci were simultaneously associated with more than two traits, and eleven loci were colocated with loci previously reported to be related to drought resistance. Candidate genes of the associated loci included the ABA-responsive element-binding protein family, MYB, NAC, the protein kinase superfamily, etc. These results revealed promising alleles linked to drought resistance or root traits, providing insights into the genetic basis of drought resistance and roots, which will be useful for common bean improvement.
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Affiliation(s)
- Lei Wu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yujie Chang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lanfen Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jing Wu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shumin Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Lei P, Liu Z, Hu Y, Kim H, Liu S, Liu J, Xu L, Li J, Zhao Y, Yu Z, Qu Y, Huang F, Meng F. Transcriptome analysis of salt stress responsiveness in the seedlings of wild and cultivated Ricinus communis L. J Biotechnol 2021; 327:106-116. [PMID: 33421510 DOI: 10.1016/j.jbiotec.2020.12.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 12/30/2022]
Abstract
Soil salinity is one of the major environmental factors, influencing agricultural productivity of crops. As a non-edible and ideal oilseed crop, castor (Ricinus communis L.) has great industrial value in biofuel, but molecular mechanisms of salt stress regulation are still unknown. In this study, the differentially expressed genes (DEGs) for differential salt tolerance in two castor cultivar (wild castor : Y, cultivated castor 'Tongbi 5': Z) were identified. 12 libraries were sampled for Illumina high-throughput sequencing to consider 132,426 nonredundant unigenes and 31,221 gene loci. Multiple phytohormones and transcription factors (TFs) were correlated with salt-tolerance and differently enriched in these two genotypes. The type 2C protein phosphatases (PP2C) homologs were all upregulated under salt stress. Importantly, IAA (1), DELLA (1) and Jasmonate zim domain (JAZ) (1) were also identified and found to be differentially expressed. Based on the co-expressed module by regulatory networks and heatmap analysis, ERF/AP2, WRKY and bHLH families were prominently participate in high salt stress response of wild and cultivated castor. Finally, these results highlight that the hub DEGs and families were more accumulated in cultivated castor than those in wild castor, providing novel insights into the salinity adaptive mechanisms and genetic improvement in castor.
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Affiliation(s)
- Pei Lei
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Zhi Liu
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Yanbo Hu
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - HyokChol Kim
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Shuo Liu
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Jiaqi Liu
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Liping Xu
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Jianxin Li
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Yong Zhao
- College of Life Science, Inner Mongolia University for Nationalities, Tongliao, 028043, China; Inner Mongolia Key Laboratory of Castor Breeding, Tongliao, 028043, China.
| | - Zhenliang Yu
- Heilongjiang Hydraulic Research Institute, Harbin, 150080, China.
| | - Yanting Qu
- Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences (HAS), Harbin, 150040, China.
| | - Fenglang Huang
- College of Life Science, Inner Mongolia University for Nationalities, Tongliao, 028043, China; Inner Mongolia Key Laboratory of Castor Breeding, Tongliao, 028043, China.
| | - Fanjuan Meng
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
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Liu Z, Shi L, Yang S, Qiu S, Ma X, Cai J, Guan D, Wang Z, He S. A conserved double-W box in the promoter of CaWRKY40 mediates autoregulation during response to pathogen attack and heat stress in pepper. MOLECULAR PLANT PATHOLOGY 2021; 22:3-18. [PMID: 33151622 PMCID: PMC7749755 DOI: 10.1111/mpp.13004] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/01/2020] [Accepted: 09/07/2020] [Indexed: 05/11/2023]
Abstract
CaWRKY40 was previously found to be transcriptionally up-regulated by Ralstonia solanacearum inoculation (RSI) or heat stress (HS), but the underlying mechanism remains unknown. Herein, we report that a double-W box-element (DWE) in the promoter of CaWRKY40 is critical for these responses. The upstream W box unit WI of this composite element is crucial for preferential binding by CaWRKY40 and responsiveness to RSI or HS. DWE-driven CaWRKY40 can be transcriptionally and nonspecifically regulated by itself and by CaWRKY58 and CaWRKY27. The DWE was also found in the promoters of CaWRKY40 orthologs, including AtWRKY40, VvWRKY40, GmWRKY40, CplWRKY40, SaWRKY40, SpWRKY40, NtWRKY40, and NaWRKY40. DWEAtWRKY40 was analogous to DWECaWRKY40 by responding to RSI or HS and AtWRKY40 expression. These data suggest that a conserved response of plants to pathogen infection or HS is probably mediated by binding of the DWE by WRKY40.
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Affiliation(s)
- Zhi‐Qin Liu
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Lan‐Ping Shi
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Sheng Yang
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Shan‐Shan Qiu
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Xiao‐Ling Ma
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Jin‐Sen Cai
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - De‐Yi Guan
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Zong‐Hua Wang
- Fujian University Key Laboratory for Plant‐Microbe InteractionCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
- Institute of OceanographyMinjiang UniversityFuzhouChina
| | - Shui‐Lin He
- National Education Minster Key Laboratory of Plant Genetic Improvement and Comprehensive UtilizationFujian Agriculture and Forestry UniversityFuzhouChina
- College of AgricultureFujian Agriculture and Forestry UniversityFuzhouChina
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Bian Z, Wang Y, Zhang X, Grundy S, Hardy K, Yang Q, Lu C. A Transcriptome Analysis Revealing the New Insight of Green Light on Tomato Plant Growth and Drought Stress Tolerance. FRONTIERS IN PLANT SCIENCE 2021; 12:649283. [PMID: 34745154 PMCID: PMC8566944 DOI: 10.3389/fpls.2021.649283] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 09/23/2021] [Indexed: 05/13/2023]
Abstract
Light plays a pivotal role in plant growth, development, and stress responses. Green light has been reported to enhance plant drought tolerance via stomatal regulation. However, the mechanisms of green light-induced drought tolerance in plants remain elusive. To uncover those mechanisms, we investigated the molecular responses of tomato plants under monochromatic red, blue, and green light spectrum with drought and well-water conditions using a comparative transcriptomic approach. The results showed that compared with monochromatic red and blue light treated plants, green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity, and induced lower stomatal aperture and higher ABA accumulation in tomato leaves after 9 days of drought stress. A total of 3,850 differentially expressed genes (DEGs) was identified in tomato leaves through pairwise comparisons. Functional annotations revealed that those DEGs responses to green light under drought stress were enriched in plant hormone signal transduction, phototransduction, and calcium signaling pathway. The DEGs involved in ABA synthesis and ABA signal transduction both participated in the green light-induced drought tolerance of tomato plants. Compared with ABA signal transduction, more DEGs related to ABA synthesis were detected under different light spectral treatments. The bZIP transcription factor- HY5 was found to play a vital role in green light-induced drought responses. Furthermore, other transcription factors, including WRKY46 and WRKY81 might participate in the regulation of stomatal aperture and ABA accumulation under green light. Taken together, the results of this study might expand our understanding of green light-modulated tomato drought tolerance via regulating ABA accumulation and stomatal aperture.
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Affiliation(s)
- Zhonghua Bian
- Photobiology Research Center, The Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
- School of Animal, Rural and Environment Sciences, Nottingham Trent University, Brackenhurst Campus, Nottingham, United Kingdom
| | - Yu Wang
- School of Animal, Rural and Environment Sciences, Nottingham Trent University, Brackenhurst Campus, Nottingham, United Kingdom
| | - Xiaoyan Zhang
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Steven Grundy
- School of Animal, Rural and Environment Sciences, Nottingham Trent University, Brackenhurst Campus, Nottingham, United Kingdom
| | - Katherine Hardy
- School of Animal, Rural and Environment Sciences, Nottingham Trent University, Brackenhurst Campus, Nottingham, United Kingdom
| | - Qichang Yang
- Photobiology Research Center, The Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
- *Correspondence: Qichang Yang
| | - Chungui Lu
- School of Animal, Rural and Environment Sciences, Nottingham Trent University, Brackenhurst Campus, Nottingham, United Kingdom
- Chungui Lu
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Sooklal SA, Mpangase PT, Tomescu MS, Aron S, Hazelhurst S, Archer RH, Rumbold K. Functional characterisation of the transcriptome from leaf tissue of the fluoroacetate-producing plant, Dichapetalum cymosum, in response to mechanical wounding. Sci Rep 2020; 10:20539. [PMID: 33239700 PMCID: PMC7688953 DOI: 10.1038/s41598-020-77598-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 11/13/2020] [Indexed: 12/21/2022] Open
Abstract
Dichapetalum cymosum produces the toxic fluorinated metabolite, fluoroacetate, presumably as a defence mechanism. Given the rarity of fluorinated metabolites in nature, the biosynthetic origin and function of fluoroacetate have been of particular interest. However, the mechanism for fluorination in D. cymosum was never elucidated. More importantly, there is a severe lack in knowledge on a genetic level for fluorometabolite-producing plants, impeding research on the subject. Here, we report on the first transcriptome for D. cymosum and investigate the wound response for insights into fluorometabolite production. Mechanical wounding studies were performed and libraries of the unwounded (control) and wounded (30 and 60 min post wounding) plant were sequenced using the Illumina HiSeq platform. A combined reference assembly generated 77,845 transcripts. Using the SwissProt, TrEMBL, GO, eggNOG, KEGG, Pfam, EC and PlantTFDB databases, a 69% annotation rate was achieved. Differential expression analysis revealed the regulation of 364 genes in response to wounding. The wound responses in D. cymosum included key mechanisms relating to signalling cascades, phytohormone regulation, transcription factors and defence-related secondary metabolites. However, the role of fluoroacetate in inducible wound responses remains unclear. Bacterial fluorinases were searched against the D. cymosum transcriptome but transcripts with homology were not detected suggesting the presence of a potentially different fluorinating enzyme in plants. Nevertheless, the transcriptome produced in this study significantly increases genetic resources available for D. cymosum and will assist with future research into fluorometabolite-producing plants.
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Affiliation(s)
- Selisha A Sooklal
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, 2000, South Africa
| | - Phelelani T Mpangase
- Sydney Brenner Institute for Molecular Biosciences, University of the Witwatersrand, Johannesburg, 2000, South Africa
| | - Mihai-Silviu Tomescu
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, 2000, South Africa
| | - Shaun Aron
- Sydney Brenner Institute for Molecular Biosciences, University of the Witwatersrand, Johannesburg, 2000, South Africa
| | - Scott Hazelhurst
- Sydney Brenner Institute for Molecular Biosciences, University of the Witwatersrand, Johannesburg, 2000, South Africa
| | - Robert H Archer
- National Herbarium, South African National Biodiversity Institute, Pretoria, 0186, South Africa
| | - Karl Rumbold
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, 2000, South Africa.
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Neang S, de Ocampo M, Egdane JA, Platten JD, Ismail AM, Seki M, Suzuki Y, Skoulding NS, Kano-Nakata M, Yamauchi A, Mitsuya S. A GWAS approach to find SNPs associated with salt removal in rice leaf sheath. ANNALS OF BOTANY 2020; 126:1193-1202. [PMID: 33009812 PMCID: PMC7684702 DOI: 10.1093/aob/mcaa139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/02/2020] [Indexed: 05/30/2023]
Abstract
BACKGROUND AND AIMS The ability for salt removal at the leaf sheath level is considered to be one of the major mechanisms associated with salt tolerance in rice. Thus, understanding the genetic control of the salt removal capacity in leaf sheaths will help improve the molecular breeding of salt-tolerant rice varieties and speed up future varietal development to increase productivity in salt-affected areas. We report a genome-wide association study (GWAS) conducted to find single nucleotide polymorphisms (SNPs) associated with salt removal in leaf sheaths of rice. METHODS In this study, 296 accessions of a rice (Oryza sativa) diversity panel were used to identify salt removal-related traits and conduct GWAS using 36 901 SNPs. The sheath:blade ratio of Na+ and Cl- concentrations was used to determine the salt removal ability in leaf sheaths. Candidate genes were further narrowed via Gene Ontology and RNA-seq analysis to those whose putative function was likely to be associated with salt transport and were up-regulated in response to salt stress. KEY RESULTS For the association signals of the Na+ sheath:blade ratio, significant SNPs were found only in the indica sub-population on chromosome 5. Within candidate genes found in the GWAS study, five genes were upregulated and eight genes were downregulated in the internal leaf sheath tissues in the presence of salt stress. CONCLUSIONS These GWAS data imply that rice accessions in the indica variety group are the main source of genes and alleles associated with Na+ removal in leaf sheaths of rice under salt stress.
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Affiliation(s)
- Sarin Neang
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
| | | | - James A Egdane
- International Rice Research Institute, Los Baños, Laguna, Philippines
| | | | | | - Masahide Seki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Japan
| | - Yutaka Suzuki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Japan
| | | | - Mana Kano-Nakata
- International Center for Research and Education in Agriculture, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
| | - Akira Yamauchi
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
| | - Shiro Mitsuya
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
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Barros VA, Chandnani R, de Sousa SM, Maciel LS, Tokizawa M, Guimaraes CT, Magalhaes JV, Kochian LV. Root Adaptation via Common Genetic Factors Conditioning Tolerance to Multiple Stresses for Crops Cultivated on Acidic Tropical Soils. FRONTIERS IN PLANT SCIENCE 2020; 11:565339. [PMID: 33281841 PMCID: PMC7688899 DOI: 10.3389/fpls.2020.565339] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 10/20/2020] [Indexed: 06/01/2023]
Abstract
Crop tolerance to multiple abiotic stresses has long been pursued as a Holy Grail in plant breeding efforts that target crop adaptation to tropical soils. On tropical, acidic soils, aluminum (Al) toxicity, low phosphorus (P) availability and drought stress are the major limitations to yield stability. Molecular breeding based on a small suite of pleiotropic genes, particularly those with moderate to major phenotypic effects, could help circumvent the need for complex breeding designs and large population sizes aimed at selecting transgressive progeny accumulating favorable alleles controlling polygenic traits. The underlying question is twofold: do common tolerance mechanisms to Al toxicity, P deficiency and drought exist? And if they do, will they be useful in a plant breeding program that targets stress-prone environments. The selective environments in tropical regions are such that multiple, co-existing regulatory networks may drive the fixation of either distinctly different or a smaller number of pleiotropic abiotic stress tolerance genes. Recent studies suggest that genes contributing to crop adaptation to acidic soils, such as the major Arabidopsis Al tolerance protein, AtALMT1, which encodes an aluminum-activated root malate transporter, may influence both Al tolerance and P acquisition via changes in root system morphology and architecture. However, trans-acting elements such as transcription factors (TFs) may be the best option for pleiotropic control of multiple abiotic stress genes, due to their small and often multiple binding sequences in the genome. One such example is the C2H2-type zinc finger, AtSTOP1, which is a transcriptional regulator of a number of Arabidopsis Al tolerance genes, including AtMATE and AtALMT1, and has been shown to activate AtALMT1, not only in response to Al but also low soil P. The large WRKY family of transcription factors are also known to affect a broad spectrum of phenotypes, some of which are related to acidic soil abiotic stress responses. Hence, we focus here on signaling proteins such as TFs and protein kinases to identify, from the literature, evidence for unifying regulatory networks controlling Al tolerance, P efficiency and, also possibly drought tolerance. Particular emphasis will be given to modification of root system morphology and architecture, which could be an important physiological "hub" leading to crop adaptation to multiple soil-based abiotic stress factors.
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Affiliation(s)
- Vanessa A. Barros
- Embrapa Maize and Sorghum, Sete Lagoas, Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rahul Chandnani
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Laiane S. Maciel
- Embrapa Maize and Sorghum, Sete Lagoas, Brazil
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, Canada
| | - Mutsutomo Tokizawa
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Jurandir V. Magalhaes
- Embrapa Maize and Sorghum, Sete Lagoas, Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Leon V. Kochian
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, Canada
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Pang Q, Zhang T, Zhang A, Lin C, Kong W, Chen S. Proteomics and phosphoproteomics revealed molecular networks of stomatal immune responses. PLANTA 2020; 252:66. [PMID: 32979085 DOI: 10.1007/s00425-020-03474-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/15/2020] [Indexed: 05/20/2023]
Abstract
Dynamic protein and phosphoprotein profiles uncovered the overall regulation of stomata movement against pathogen invasion and phosphorylation states of proteins involved in ABA, SA, calcium and ROS signaling, which may modulate the stomatal immune response. Stomatal openings represent a major route of pathogen entry into the plant, and plants have evolved mechanisms to regulate stomatal aperture as innate immune response against bacterial invasion. However, the mechanisms underlying stomatal immunity are not fully understood. Taking advantage of high-throughput liquid chromatography mass spectrometry (LC-MS), we performed label-free proteomic and phosphoproteomic analyses of enriched guard cells in response to a bacterial pathogen Pseudomonas syringae pv. tomato (Pst) DC3000. In total, 495 proteins and 1229 phosphoproteins were identified as differentially regulated. These proteins are involved in a variety of signaling pathways, including abscisic acid and salicylic acid hormone signaling, calcium and reactive oxygen species signaling. We also showed that dynamic changes of phosphoprotein WRKY transcription factors may play a crucial role in regulating stomata movement in plant immunity. The identified proteins/phosphoproteins and the pathways form interactive molecular networks to regulate stomatal immunity. This study has provided new insights into the multifaceted mechanisms of stomatal immunity. The differential proteins and phosphoproteins are potential targets for engineering or breeding of crops for enhanced pathogen defense.
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Affiliation(s)
- Qiuying Pang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Tong Zhang
- Department of Biology, Genetics Institute, University of Florida, Gainesville, FL, USA
| | - Aiqin Zhang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Chuwei Lin
- Department of Biology, Genetics Institute, University of Florida, Gainesville, FL, USA
| | - Wenwen Kong
- Department of Biology, Genetics Institute, University of Florida, Gainesville, FL, USA
| | - Sixue Chen
- Department of Biology, Genetics Institute, University of Florida, Gainesville, FL, USA.
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, USA.
- Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, USA.
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