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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 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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Han H, Wu W, Hou H, Zhang M, Guo A, Zhou Y, Liu J, Li K, Bai S, Li B, Li Z, Guo S, Wang P. Function analysis of transcription factor OSR1 regulating osmotic stress resistance in maize. Biochem Biophys Res Commun 2024; 714:149956. [PMID: 38663095 DOI: 10.1016/j.bbrc.2024.149956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/05/2024] [Accepted: 04/15/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Maize is a major cereal crop world widely, however, the yield of maize is frequently limited by dehydration and even death of plants, which resulted from osmotic stress such as drought and salinity. Dissection of molecular mechanisms controlling stress tolerance will enable plant scientists and breeders to increase crops yield by manipulating key regulatory components. METHODS The candidate OSR1 gene was identified by map-based cloning. The expression level of OSR1 was verified by qRT-PCR and digital PCR in WT and osr1 mutant. Electrophoretic mobility shift assay, transactivation activity assay, subcellular localization, transcriptome analysis and physiological characters measurements were conducted to analyze the function of OSR1 in osmotic stress resistance in maize. RESULTS The osr1 mutant was significantly less sensitive to osmotic stress than the WT plants and displayed stronger water-holding capacity, and the OSR1 homologous mutant in Arabidopsis showed a phenotype similar with maize osr1 mutant. Differentially expressed genes (DEGs) were identified between WT and osr1 under osmotic stress by transcriptome analysis, the expression levels of many genes, such as LEA, auxin-related factors, PPR family members, and TPR family members, changed notably, which may primarily involve in osmotic stress or promote root development. CONCLUSIONS OSR1 may serve as a negative regulatory factor in response to osmotic stress in maize. The present study sheds new light on the molecular mechanisms of osmotic stress in maize.
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Affiliation(s)
- Hongpeng Han
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China; School of Physical Education and Health Management, Henan Finance University, Zhengzhou, 450046, Henan, PR China
| | - Wenqiang Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Huijiao Hou
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Mingli Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Aiyu Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Yusen Zhou
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Jiong Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Kaiwen Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Shenglong Bai
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Baozhu Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Zhi Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Siyi Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China
| | - Pengtao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, PR China.
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3
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Sun Y, Tian Z, Zuo D, Wang Q, Song G. GhUBC10-2 mediates GhGSTU17 degradation to regulate salt tolerance in cotton (Gossypium hirsutum). PLANT, CELL & ENVIRONMENT 2024; 47:1606-1624. [PMID: 38282268 DOI: 10.1111/pce.14839] [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: 06/27/2023] [Revised: 01/13/2024] [Accepted: 01/17/2024] [Indexed: 01/30/2024]
Abstract
Ubiquitin-conjugating enzyme (UBC) is a crucial component of the ubiquitin-proteasome system, which contributes to plant growth and development. While some UBCs have been identified as potential regulators of abiotic stress responses, the underlying mechanisms of this regulation remain poorly understood. Here, we report a cotton (Gossypium hirsutum) UBC gene, GhUBC10-2, which negatively regulates the salt stress response. We found that the gain of function of GhUBC10-2 in both Arabidopsis (Arabidopsis thaliana) and cotton leads to reduced salinity tolerance. Additionally, GhUBC10-2 interacts with glutathione S-transferase (GST) U17 (GhGSTU17), forming a heterodimeric complex that promotes GhGSTU17 degradation. Intriguingly, GhUBC10-2 can be self-polyubiquitinated, suggesting that it possesses E3-independent activity. Our findings provide new insights into the PTM of plant GST-mediated salt response pathways. Furthermore, we found that the WRKY transcription factor GhWRKY13 binds to the GhUBC10-2 promoter and suppresses its expression under salt conditions. Collectively, our study unveils a regulatory module encompassing GhWRKY13-GhUBC10-2-GhGSTU17, which orchestrates the modulation of reactive oxygen species homeostasis to enhance salt tolerance.
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Affiliation(s)
- Yaru Sun
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Zailong Tian
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan, China
| | - Dongyun Zuo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Qiaolian Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Guoli Song
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan, China
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
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4
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Saidi A, Safaeizadeh M, Hajibarat Z. Differential expression of the genes encoding immune system components in response to Pseudomonas syringae and Pseudomonas aeruginosa in Arabidopsis thaliana. 3 Biotech 2024; 14:11. [PMID: 38098678 PMCID: PMC10716095 DOI: 10.1007/s13205-023-03852-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 11/08/2023] [Indexed: 12/17/2023] Open
Abstract
In innate immunity, the first layer of defense against any microbial infection is triggered by the perception of pathogen-associated molecular patterns by highly specific pattern recognition receptors. The Pseudomonas syringae pv. tomato and Pseudomonas aeruginosa are plant-pathogenic bacterial species that include pathogenic strains in a wide range of different plant species. In the current study, extensive analysis including gene expression of 12 hub genes, gene ontology, protein-protein interaction, and cis-element prediction to dissect the Arabidopsis response to above-mentioned bacteria were performed. Further, we evaluated weighted co-expression network analysis (WGCNA) in the wild-type plants and coi-1 mutant line and determined changes in responsive genes at two time-points (4 and 8 h) of post-treatment with P. syringae and P. aeruginosa. Compared to the wild-type plants, coi-1 mutant showed significant expression in most of the genes involved, indicating that their protein products have important role in innate immunity and RNA silencing pathways. Our findings showed that 12 hub genes were co-expressed in response to P. syringae and P. aeruginosa infections. Based on the network analysis, transcription factors, receptors, protein kinase, and pathogenesis-related protein (PR1) were involved in the immunity system. Gene ontology related to each module was involved in defense response, protein serine kinase activity, and primary miRNA processing. Based on the cis-elements prediction, MYB, MYC, WRE3, W-box, STRE, and ARE contained the most number of cis-elements in co-expressed network genes. Also, in coi-1 mutant, most responsive genes against theses pathogens were up-regulated. The knowledge gained in the gene expression analysis in response to P. syringae and P. aeruginosa in the model plant, i.e., Arabidopsis, is essential to allow us to gain more insight about the innate immunity in other crops.
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Affiliation(s)
- Abbas Saidi
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Mehdi Safaeizadeh
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Zohreh Hajibarat
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
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Saha B, Nayak J, Srivastava R, Samal S, Kumar D, Chanwala J, Dey N, Giri MK. Unraveling the involvement of WRKY TFs in regulating plant disease defense signaling. PLANTA 2023; 259:7. [PMID: 38012461 DOI: 10.1007/s00425-023-04269-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/18/2023] [Indexed: 11/29/2023]
Abstract
MAIN CONCLUSION This review article explores the intricate role, regulation, and signaling mechanisms of WRKY TFs in response to biotic stress, particularly emphasizing their pivotal role in the trophism of plant-pathogen interactions. Transcription factors (TFs) play a vital role in governing both plant defense and development by controlling the expression of various downstream target genes. Early studies have shown the differential expression of certain WRKY transcription factors by microbial infections. Several transcriptome-wide studies later demonstrated that diverse sets of WRKYs are significantly activated in the early stages of viral, bacterial, and fungal infections. Furthermore, functional investigations indicated that overexpression or silencing of certain WRKY genes in plants can drastically alter disease symptoms as well as pathogen multiplication rates. Hence the new aspects of pathogen-triggered WRKY TFs mediated regulation of plant defense can be explored. The already recognized roles of WRKYs include transcriptional regulation of defense-related genes, modulation of hormonal signaling, and participation in signal transduction pathways. Some WRKYs have been shown to directly bind to pathogen effectors, acting as decoys or resistance proteins. Notably, the signaling molecules like salicylic acid, jasmonic acid, and ethylene which are associated with plant defense significantly increase the expression of several WRKYs. Moreover, induction of WRKY genes or heightened WRKY activities is also observed during ISR triggered by the beneficial microbes which protect the plants from subsequent pathogen infection. To understand the contribution of WRKY TFs towards disease resistance and their exact metabolic functions in infected plants, further studies are required. This review article explores the intrinsic transcriptional regulation, signaling mechanisms, and hormonal crosstalk governed by WRKY TFs in plant disease defense response, particularly emphasizing their specific role against different biotrophic, hemibiotrophic, and necrotrophic pathogen infections.
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Affiliation(s)
- Baisista Saha
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India
| | - Jagatjeet Nayak
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India
| | - Richa Srivastava
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Swarnmala Samal
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Deepak Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Jeky Chanwala
- Institute of Life Sciences, NALCO Nagar Road, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha, 751023, India
| | - Nrisingha Dey
- Institute of Life Sciences, NALCO Nagar Road, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha, 751023, India
| | - Mrunmay Kumar Giri
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India.
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Chen Y, Zhang X, Fan Y, Sui D, Jiang J, Wang L. The role of WRKY transcription factors in exogenous potassium (K +) response to NaCl stress in Tamarix ramosissima. Front Genet 2023; 14:1274288. [PMID: 38054027 PMCID: PMC10694239 DOI: 10.3389/fgene.2023.1274288] [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: 08/08/2023] [Accepted: 10/30/2023] [Indexed: 12/07/2023] Open
Abstract
Introduction: Soil salinization poses a significant challenge to plant growth and vitality. Plants like Tamarix ramosissima Ledeb (T. ramosissima), which are halophytes, are often integrated into planting schemes tailored for saline environments. Yet, the role of WRKY transcription factors in T. ramosissima, especially under sodium chloride (NaCl) stress mitigated by exogenous K+ application, is not well-understood. This research endeavors to bridge this knowledge gap. Methods: Using Pfam protein domain prediction and physicochemical property analysis, we delved into the WRKY genes in T. ramosissima roots that are implicated in counteracting NaCl stress when aided by exogenous K+ applications. By observing shifts in the expression levels of WRKY genes annotated to the KEGG pathway under NaCl stress at 0, 48, and 168 h, we aimed to identify potential key WRKY genes. Results: We found that the expression of 56 WRKY genes in T. ramosissima roots responded to exogenous K+ application during NaCl stress at the indicated time points. Particularly, the expression levels of these genes were primarily upregulated within 168 h. From these, 10 WRKY genes were found to be relevant in the KEGG pathways. Moreover, six genes, namely Unigene0024962, Unigene0024963, Unigene0010090, Unigene0007135, Unigene0070215, and Unigene0077293, were annotated to the Plant-pathogen interaction pathway or the MAPK signaling pathway in plants. These genes exhibited dynamic expression regulation at 48 h with the application of exogenous K+ under NaCl stress. Discussion: Our research highlights that WRKY transcription factors can modulate the activation or inhibition of related genes during NaCl stress with the application of exogenous K+. This regulation enhances the plant's adaptability to saline environments and mitigates the damage induced by NaCl. These findings provide valuable gene resources for future salt-tolerant Tamarix breeding and expand our understanding of the molecular mechanisms of WRKY transcription factors in alleviating NaCl toxicity.
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Affiliation(s)
- Yahui Chen
- Jiangsu Academy of Forestry, Nanjing, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Xuanyi Zhang
- Jiangsu Academy of Forestry, Nanjing, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Yunlong Fan
- Faculty of Science Department of Statistics, University of British Columbia, Vancouver, BC, Canada
| | - Dezong Sui
- Jiangsu Academy of Forestry, Nanjing, China
| | - Jiang Jiang
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Lei Wang
- Jiangsu Academy of Forestry, Nanjing, China
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7
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Zhou Q, Guo Z, Zhou X, Zhou L, Wang D, Bo K, Zhu P. Genome-Wide Identification and Characterization of the WRKY Gene Family in Cucurbita maxima. Genes (Basel) 2023; 14:2030. [PMID: 38002973 PMCID: PMC10671635 DOI: 10.3390/genes14112030] [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: 09/08/2023] [Revised: 10/22/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
In higher plants, WRKY transcription factors are broadly involved in a variety of life activities and play an important role in both biotic and abiotic stress responses. However, little is known about the functions of WRKY genes in the popular species, such as Cucurbita maxima (pumpkin), which is planted worldwide. In the present study, 102 CmWRKY genes were identified in the C. maxima genome. Chromosome location, multiple sequence alignment, phylogenetic analysis, and synteny analysis of the CmWRKYs were performed. Notably, we found that silencing CmWRKY22 promoted cucumber mosaic virus (CMV) infection, whereas overexpression of CmWRKY22 inhibited the CMV infection. Subsequently, an electrophoretic mobility shift assay (EMSA) confirmed that CmWRKY22 was able to bind to the W-box at the promoter of CmPR1b, which is a responsive gene of the salicylic acid (SA) signaling pathway. In summary, this study has provided a foundation for the antiviral functions of WRKY transcription factors in C. maxima.
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Affiliation(s)
- Qin Zhou
- Jinhua Academy of Agricultural Sciences, Jinhua 321000, China
| | - Ziqing Guo
- Jinhua Academy of Agricultural Sciences, Jinhua 321000, China
| | - Xiaojun Zhou
- Jinhua Academy of Agricultural Sciences, Jinhua 321000, China
| | - Lei Zhou
- Anhui Provincial Key Laboratory of Melons and Vegetables Germplasm Resource Innovation and Intelligent Technology, Hefei 230031, China
| | - Duanhua Wang
- Hunan Vegetable Research Institute, Changsha 410125, China
| | - Kailiang Bo
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Pu Zhu
- Jinhua Academy of Agricultural Sciences, Jinhua 321000, China
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Rai GK, Mishra S, Chouhan R, Mushtaq M, Chowdhary AA, Rai PK, Kumar RR, Kumar P, Perez-Alfocea F, Colla G, Cardarelli M, Srivastava V, Gandhi SG. Plant salinity stress, sensing, and its mitigation through WRKY. FRONTIERS IN PLANT SCIENCE 2023; 14:1238507. [PMID: 37860245 PMCID: PMC10582725 DOI: 10.3389/fpls.2023.1238507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 08/31/2023] [Indexed: 10/21/2023]
Abstract
Salinity or salt stress has deleterious effects on plant growth and development. It imposes osmotic, ionic, and secondary stresses, including oxidative stress on the plants and is responsible for the reduction of overall crop productivity and therefore challenges global food security. Plants respond to salinity, by triggering homoeostatic mechanisms that counter salt-triggered disturbances in the physiology and biochemistry of plants. This involves the activation of many signaling components such as SOS pathway, ABA pathway, and ROS and osmotic stress signaling. These biochemical responses are accompanied by transcriptional modulation of stress-responsive genes, which is mostly mediated by salt-induced transcription factor (TF) activity. Among the TFs, the multifaceted significance of WRKY proteins has been realized in many diverse avenues of plants' life including regulation of plant stress response. Therefore, in this review, we aimed to highlight the significance of salinity in a global perspective, the mechanism of salt sensing in plants, and the contribution of WRKYs in the modulation of plants' response to salinity stress. This review will be a substantial tool to investigate this problem in different perspectives, targeting WRKY and offering directions to better manage salinity stress in the field to ensure food security.
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Affiliation(s)
- Gyanendra Kumar Rai
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Sonal Mishra
- Department of Botany, School of Life Sciences, Central University of Jammu, Samba, Jammu & Kashmir, India
| | - Rekha Chouhan
- Infectious Diseases Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu, India
| | - Muntazir Mushtaq
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Aksar Ali Chowdhary
- Department of Botany, School of Life Sciences, Central University of Jammu, Samba, Jammu & Kashmir, India
| | - Pradeep K. Rai
- Advance Center for Horticulture Research, Udheywala, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu & Kashmir, India
| | - Ranjeet Ranjan Kumar
- Division of Biochemistry, Indian Council of Agricultural Research (ICAR), Indian Agricultural Research Institute, New Delhi, India
| | - Pradeep Kumar
- Division of Integrated Farming System, Central Arid Zone Research Institute, Indian Council of Agricultural Research (ICAR), Jodhpur, India
| | - Francisco Perez-Alfocea
- Department of Nutrition, Centre for Applied Soil Science and Biology of the Segura (CEBAS), of the Spanish National Research Council (CSIC), Murcia, Spain
| | - Giuseppe Colla
- Department of Agriculture and Forest Sciences, University of Tuscia, Viterbo, Italy
| | | | - Vikas Srivastava
- Department of Botany, School of Life Sciences, Central University of Jammu, Samba, Jammu & Kashmir, India
| | - Sumit G. Gandhi
- Infectious Diseases Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu, India
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9
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Liu J, Li G, Wang R, Wang G, Wan Y. Genome-Wide Analysis of WRKY Transcription Factors Involved in Abiotic Stress and ABA Response in Caragana korshinskii. Int J Mol Sci 2023; 24:ijms24119519. [PMID: 37298467 DOI: 10.3390/ijms24119519] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
The WRKY transcription factor family plays a vital role in plant development and environmental response. However, the information of WRKY genes at the genome-wide level is rarely reported in Caragana korshinskii. In this study, we identified and renamed 86 CkWRKY genes, which were further classified into three groups through phylogenetic analysis. Most of these WRKY genes were clustered and distributed on eight chromosomes. Multiple sequence alignment revealed that the conserved domain (WRKYGQK) of the CkWRKYs was basically consistent, but there were also six variation types (WRKYGKK, GRKYGQK, WRMYGQK, WRKYGHK, WKKYEEK and RRKYGQK) that appeared. The motif composition of the CkWRKYs was quite conservative in each group. In general, the number of WRKY genes gradually increased from lower to higher plant species in the evolutionary analysis of 28 species, with some exceptions. Transcriptomics data and RT-qPCR analysis showed that the CkWRKYs in different groups were involved in abiotic stresses and ABA response. Our results provided a basis for the functional characterization of the CkWRKYs involved in stress resistance in C. korshinskii.
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Affiliation(s)
- Jinhua Liu
- Key Laboratory of Plants Adversity Adaptation and Genetic Improvement in Cold and Arid Regions of Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Guojing Li
- Key Laboratory of Plants Adversity Adaptation and Genetic Improvement in Cold and Arid Regions of Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Ruigang Wang
- Key Laboratory of Plants Adversity Adaptation and Genetic Improvement in Cold and Arid Regions of Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Guangxia Wang
- Key Laboratory of Plants Adversity Adaptation and Genetic Improvement in Cold and Arid Regions of Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Yongqing Wan
- Key Laboratory of Plants Adversity Adaptation and Genetic Improvement in Cold and Arid Regions of Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010018, China
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10
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Wen F, Wu X, Zhang L, Xiao J, Li T, Jia M. Molecular Cloning and Characterization of WRKY12, A Pathogen Induced WRKY Transcription Factor from Akebia trifoliata. Genes (Basel) 2023; 14:genes14051015. [PMID: 37239375 DOI: 10.3390/genes14051015] [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: 03/09/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
WRKY transcription factors (TFs), which are plant-specific TFs, play significant roles in plant defense. Here, a pathogen-induced WRKY gene, named AktWRKY12, which was the homologous gene of AtWRKY12, was isolated from Akebia trifoliata. The AktWRKY12 gene has a total length of 645 nucleotides and an open reading frame (ORF) encoding 214 amino acid polypeptides. The characterizations of AktWRKY12 were subsequently performed with the ExPASy online tool Compute pI/Mw, PSIPRED and SWISS-MODEL softwares. The AktWRKY12 could be classified as a member of WRKY group II-c TFs based on sequence alignment and phylogenetic analysis. The results of tissue-specific expression analysis revealed that the AktWRKY12 gene was expressed in all the tested tissues, and the highest expression level was detected in A. trifoliata leaves. Subcellular localization analysis showed that AktWRKY12 was a nuclear protein. Results showed that the expression level of AktWRKY12 significantly increased in A. trifoliata leaves with pathogen infection. Furthermore, heterologous over-expression of AktWRKY12 in tobacco resulted in suppressed expression of lignin synthesis key enzyme genes. Based on our results, we speculate that AktWRKY12 might play a negative role in A. trifoliata responding to biotic stress by regulating the expression of lignin synthesis key enzyme genes during pathogen infection.
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Affiliation(s)
- Feng Wen
- Anhui Chuju Planting and Deep Processing Engineering Research Center, School of Biological Science and Food Engineering, Chuzhou University, Chuzhou 239000, China
| | - Xiaozhu Wu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Key Laboratory of Biopesticides and Chemical Biology, Ministry of Education, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332000, China
| | - Lishen Zhang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332000, China
| | - Jiantao Xiao
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332000, China
| | - Tongjian Li
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332000, China
| | - Mingliang Jia
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332000, China
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11
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Wang H, Zhang S, Fu Q, Wang Z, Liu X, Sun L, Zhao Z. Transcriptomic and Metabolomic Analysis Reveals a Protein Module Involved in Pre-harvest Apple Peel Browning. PLANT PHYSIOLOGY 2023:kiad064. [PMID: 36722358 DOI: 10.1093/plphys/kiad064] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Peel browning is a natural phenomenon that adversely affects the appearance of fruits. Research on the regulation of browning in apples (Malus × domestica Borkh.) has mainly focused on post-harvest storage, while studies at the pre-harvest stage are relatively rare. Apple is an economically important horticultural crop prone to peel browning during growth, especially when the fruits are bagged (dark conditions). The present study's integrated transcriptomics and metabolomics analysis revealed that pre-harvest apple peel browning was primarily due to changes in phenolics and flavonoids. The detailed analysis identified MdLAC7's (laccase 7) role in the pre-harvest apple peel browning process. Transient injection, overexpression, and CRISPR/Cas9 knockout of the MdLAC7 gene in apple fruit and calli identified vallinic acid, anthocyanidin, tannic acid, sinapic acid, and catechinic acid as its catalytic substrates. In addition, yeast one-hybrid (Y1H) assay, electrophoretic mobility shift assay (EMSA), luciferase (LUC) reporter assay, and ChIP-PCR analysis revealed that MdWRKY31 binds to the promoter of MdLAC7 and positively regulates its activity to promote peel browning of bagged fruits (dark conditions). Interestingly, upon light exposure, the light-responsive transcription factor MdHY5 (ELONGATED HYPOCOTYL 5) bound to the promoter of MdWRKY31 and inhibited the gene's expression, thereby indirectly inhibiting the function of MdLAC7. Subsequent analysis showed that MdHY5 binds to the MdLAC7 promoter at the G-box1/2 site and directly inhibits its expression in vivo. Thus, the study revealed the MdLAC7-mediated mechanism regulating pre-harvest apple peel browning and demonstrated the role of light in inhibiting MdLAC7 activity and subsequently reducing peel browning. These results provide theoretical guidance for producing high-quality apple fruits.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Shuhui Zhang
- College of Horticultural Science and Engineering, Shandong Agricultural University State Key Laboratory of Crop Biology, Taian, Shandong, 271000, China
| | - Qingqing Fu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zidun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaojie Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lulong Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhengyang Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
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12
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Yang Z, Gao C, Zhang Y, Yan Q, Hu W, Yang L, Wang Z, Li F. Recent progression and future perspectives in cotton genomic breeding. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:548-569. [PMID: 36226594 DOI: 10.1111/jipb.13388] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/11/2022] [Indexed: 05/26/2023]
Abstract
Upland cotton is an important global cash crop for its long seed fibers and high edible oil and protein content. Progress in cotton genomics promotes the advancement of cotton genetics, evolutionary studies, functional genetics, and breeding, and has ushered cotton research and breeding into a new era. Here, we summarize high-impact genomics studies for cotton from the last 10 years. The diploid Gossypium arboreum and allotetraploid Gossypium hirsutum are the main focus of most genetic and genomic studies. We next review recent progress in cotton molecular biology and genetics, which builds on cotton genome sequencing efforts, population studies, and functional genomics, to provide insights into the mechanisms shaping abiotic and biotic stress tolerance, plant architecture, seed oil content, and fiber development. We also suggest the application of novel technologies and strategies to facilitate genome-based crop breeding. Explosive growth in the amount of novel genomic data, identified genes, gene modules, and pathways is now enabling researchers to utilize multidisciplinary genomics-enabled breeding strategies to cultivate "super cotton", synergistically improving multiple traits. These strategies must rise to meet urgent demands for a sustainable cotton industry.
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Affiliation(s)
- Zhaoen Yang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Chenxu Gao
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
| | - Yihao Zhang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
| | - Qingdi Yan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Wei Hu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
| | - Lan Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Zhi Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang, 455000, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, 572000, China
- Sanya Institute, Zhengzhou University, Sanya, 572000, China
| | - Fuguang Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450000, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang, 455000, China
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13
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Ehsan A, Naqvi RZ, Azhar M, Awan MJA, Amin I, Mansoor S, Asif M. Genome-Wide Analysis of WRKY Gene Family and Negative Regulation of GhWRKY25 and GhWRKY33 Reveal Their Role in Whitefly and Drought Stress Tolerance in Cotton. Genes (Basel) 2023; 14:171. [PMID: 36672912 PMCID: PMC9859137 DOI: 10.3390/genes14010171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/01/2023] [Accepted: 01/05/2023] [Indexed: 01/10/2023] Open
Abstract
The WRKY transcription factor family is marked by its significant responsiveness to both biotic and abiotic plant stresses. In the present study, the WRKY family of Gossypium hirsutum has been identified and classified into three groups based on the number of conserved WRKY domains and the type of zinc finger motif. This classification is further validated by conserved domain and phylogenetic analysis. Two members of the WRKY family, WRKY25 and WRKY33, have been targeted through VIGS in G. hirsutum. VIGS-infiltrated plants were evaluated under drought stress and whitefly infestation. It was observed that GhWRKY33-downregulated plants showed a decrease in whitefly egg and nymph population, and GhWRKY33 was found to be a strong negative regulator of whitefly and drought stress, while GhWRKY25 was found to be a moderate negative regulator of whitefly and drought stress. As the targeted genes are transcription factors influencing the expression of other genes, the relative expression of other stress-responsive genes, namely MPK6, WRKY40, HSP, ERF1, and JAZ1, was also analyzed through qRT-PCR. It was found elevated in GhWRKY33-downregulated plants, while GhWRKY25-downregulated plants through VIGS showed the elevated expression of ERF1 and WRKY40, a slightly increased expression of HSP, and a lower expression level of MPK6. Overall, this study provides an important insight into the WRKY TF family and the role of two WRKY TFs in G. hirsutum under drought stress and whitefly infestation. The findings will help to develop crops resilient to drought and whitefly stress.
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Affiliation(s)
| | | | | | | | | | | | - Muhammad Asif
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
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14
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Zhou W, Yang S, Yang L, Xiao R, Chen S, Wang D, Wang S, Wang Z. Genome-Wide Identification of the Hypericum perforatum WRKY Gene Family Implicates HpWRKY85 in Drought Resistance. Int J Mol Sci 2022; 24:ijms24010352. [PMID: 36613796 PMCID: PMC9820127 DOI: 10.3390/ijms24010352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/09/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
WRKY, named for its special heptapeptide conserved sequence WRKYGOK, is one of the largest transcription factor families in plants and is widely involved in plant responses to biotic, abiotic, and hormonal stresses, especially the important regulatory function in response to drought stress. However, there is no complete comprehensive analysis of this family in H. perforatum, which is one of the most extensively studied plants and is probably the best-known herbal medicine on the market today, serving as an antidepressant, neuroprotective, an antineuralgic, and an antiviral. Here, we identified 86 HpWRKY genes according to the whole genome database of H. perforatum, and classified them into three groups through phylogenetic analysis. Gene structure, conserved domain, motif, cis-elements, gene ontology, and expression profiling were performed. Furthermore, it was found that HpWRKY85, a homologous gene of AtWRKY75, showed obvious responses to drought treatment. Subcellular localization analysis indicated that this protein was localized in the nucleus by the Arabidopsis protoplasts transient transfection. Meanwhile, HpWRKY85-overexpressing Arabidopsis plants showed a stronger ability of root growth and scavenging endogenous reactive oxygen species. The results provide a reference for further understanding the role of HpWRKY85 in the molecular mechanism of drought resistance of H. perforatum.
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Affiliation(s)
- Wen Zhou
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Shu Yang
- Shaanxi Engineering Research Centre for Conservation and Utilization of Botanical Resources, Xi’an Botanical Garden of Shaanxi Province, Institute of Botany of Shaanxi Province, Xi’an 710061, China
| | - Lei Yang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Ruyi Xiao
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Shiyi Chen
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Donghao Wang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Shiqiang Wang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
| | - Zhezhi Wang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi’an 710062, China
- Correspondence:
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15
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Isolation of Salvia miltiorrhiza Kaurene Synthase-like ( KSL) Gene Promoter and Its Regulation by Ethephon and Yeast Extract. Genes (Basel) 2022; 14:genes14010054. [PMID: 36672795 PMCID: PMC9859234 DOI: 10.3390/genes14010054] [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: 11/24/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
The presented study describes the regulation of the promoter region of the Salvia miltiorrhiza kaurene synthase-like gene (SmKSL) by ethylene and yeast extract. The isolated fragment is 897 bp and is composed of a promoter (763 bp), 5'UTR (109 bp), and a short CDS (25 bp). The initial in silico analysis revealed the presence of numerous putative cis-active sites for trans-factors responding to different stress conditions. However, this study examines the influence of ethylene and yeast extract on SmKSL gene expression and tanshinone biosynthesis regulation. The results of 72h RT-PCR indicate an antagonistic interaction between ethylene, provided as ethephon (0.05, 0.10, 0.25, and 0.50 mM), and yeast extract (0.5%) on SmKSL gene expression in callus cultures of S. miltiorrhiza. A similar antagonistic effect was observed on total tanshinone concentration for up to 60 days. Ethylene provided as ethephon (0.05, 0.10, 0.25, and 0.50 mM) is a weak inducer of total tanshinone biosynthesis, increasing them only up to the maximum value of 0.67 ± 0.04 mg g-1 DW (60-day induction with 0.50 mM ethephon). Among the tanshinones elicited by ethephon, cryptotanshinone (52.21%) dominates, followed by dihydrotanshinone (45.00%) and tanshinone IIA (3.79%). In contrast, the 0.5% yeast extract strongly increases the total tanshinone concentration up to a maximum value of 13.30 ± 1.09 mg g-1 DW, observed after 50 days of induction. Yeast extract and ethylene appear to activate different fragments of the tanshinone biosynthesis route; hence the primary tanshinones induced by yeast extract were cryptotanshinone (81.42%), followed by dihydrotanshinone (17.06%) and tanshinone IIA (1.52%).
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16
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Transcriptome analysis of response strategy in Hemerocallis fulva under drought stress. Genes Genomics 2022; 45:593-610. [PMID: 36348249 DOI: 10.1007/s13258-022-01335-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 10/20/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Hemerocallis fulva is an important ground cover plant widely used in urban greening. The analysis of the molecular mechanism underlying the drought response of H. fulva can lay a foundation for improving its adaptability and expanding its planting area. OBJECTIVE To reveal the drought response mechanisms of H. fulva, identify candidate unigenes associated with drought response, and lay a foundation for further unigenes functional study and drought resistance improvement of H. fulva via genetic engineering. METHODS RNA was isolated from H. fulva under different experimental conditions. De novo transcriptomic analysis of the samples was performed to screen drought response unigenes. The transcriptional changes of candidate drought response unigenes were verified by quantitative real-time PCR. RESULTS The differentially expressed unigenes and their functions were analyzed after H. fulva treated by PEG-simulated drought stress and rewatering. The candidate unigenes, associated with H. fulva drought response, were identified after transcriptome analysis. Then, the transcription level of drought response unigenes of H. fulva under different conditions was further verified. Abscisic acid, protein phosphorylation, sterol biosynthesis and ion transport were involved in drought response with quick restore in H. fulva. The response unigenes, involved in hormone (ABA, JA, CK and GA) signaling pathways, defense response, high light response, karrikin response and leaf shaping, can maintain at changed expression levels even after stress withdraw. CONCLUSION Hemerocallis fulva has unique drought response mechanism. Negative regulation mechanism may play more important roles in drought response of H. fulva. The analysis of candidate unigenes, associated with drought response, lays a foundation for further drought resistance improvement of H. fulva.
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Khoso MA, Hussain A, Ritonga FN, Ali Q, Channa MM, Alshegaihi RM, Meng Q, Ali M, Zaman W, Brohi RD, Liu F, Manghwar H. WRKY transcription factors (TFs): Molecular switches to regulate drought, temperature, and salinity stresses in plants. FRONTIERS IN PLANT SCIENCE 2022; 13:1039329. [PMID: 36426143 PMCID: PMC9679293 DOI: 10.3389/fpls.2022.1039329] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/19/2022] [Indexed: 06/01/2023]
Abstract
The WRKY transcription factor (TF) belongs to one of the major plant protein superfamilies. The WRKY TF gene family plays an important role in the regulation of transcriptional reprogramming associated with plant stress responses. Change in the expression patterns of WRKY genes or the modifications in their action; participate in the elaboration of numerous signaling pathways and regulatory networks. WRKY proteins contribute to plant growth, for example, gamete formation, seed germination, post-germination growth, stem elongation, root hair growth, leaf senescence, flowering time, and plant height. Moreover, they play a key role in many types of environmental signals, including drought, temperature, salinity, cold, and biotic stresses. This review summarizes the current progress made in unraveling the functions of numerous WRKY TFs under drought, salinity, temperature, and cold stresses as well as their role in plant growth and development.
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Affiliation(s)
- Muneer Ahmed Khoso
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
- Department of Life Science, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Amjad Hussain
- College of Plant Science and Technology, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei, China
| | | | - Qurban Ali
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | | | - Rana M. Alshegaihi
- Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Qinglin Meng
- Department of Biology and Food Engineering, Bozhou University, Bozhou, China
| | - Musrat Ali
- Department of Plant Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad Pakistan, Islamabad, Pakistan
| | - Wajid Zaman
- Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea
| | - Rahim Dad Brohi
- Department of Animal Reproduction/Theriogenology, Faculty of Veterinary Science, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Pakistan
| | - Fen Liu
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
| | - Hakim Manghwar
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
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Lv M, Luo W, Ge M, Guan Y, Tang Y, Chen W, Lv J. A Group I WRKY Gene, TaWRKY133, Negatively Regulates Drought Resistance in Transgenic Plants. Int J Mol Sci 2022; 23:ijms231912026. [PMID: 36233327 PMCID: PMC9569464 DOI: 10.3390/ijms231912026] [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: 08/15/2022] [Revised: 09/19/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022] Open
Abstract
WRKYs are one of the largest transcription factor (TF) families and play an important role in plant resistance to various stresses. TaWRKY133, a group I WRKY protein, responds to a variety of abiotic stresses, including PEG treatment. The TaWRKY133 protein is located in the nucleus of tobacco epidermal cells, and both its N-terminal and C-terminal domains exhibit transcriptional activation activity. Overexpression of TaWRKY133 reduced drought tolerance in Arabidopsis thaliana, as reflected by a lower germination rate, shorter roots, higher stomatal aperture, poorer growth and lower antioxidant enzyme activities under drought treatment. Moreover, expression levels of stress-related genes (DREB2A, RD29A, RD29B, ABF1, ABA2, ABI1, SOD (Cu/Zn), POD1 and CAT1) were downregulated in transgenic Arabidopsis under drought stress. Gene silencing of TaWRKY133 enhanced the drought tolerance of wheat, as reflected in better growth, higher antioxidant enzyme activities, and higher expression levels of stress-related genes including DREB1, DREB3, ABF, ERF3, SOD (Fe), POD, CAT and P5CS. In conclusion, these results suggest that TaWRKY133 might reduce drought tolerance in plants by regulating the expression of stress-related genes.
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Affiliation(s)
| | | | | | | | | | - Weimin Chen
- Correspondence: (W.C.); (J.L.); Tel.: +86-180-0924-4163 (W.C.); +86-135-7219-6187 (J.L.)
| | - Jinyin Lv
- Correspondence: (W.C.); (J.L.); Tel.: +86-180-0924-4163 (W.C.); +86-135-7219-6187 (J.L.)
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19
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Maryum Z, Luqman T, Nadeem S, Khan SMUD, Wang B, Ditta A, Khan MKR. An overview of salinity stress, mechanism of salinity tolerance and strategies for its management in cotton. FRONTIERS IN PLANT SCIENCE 2022; 13:907937. [PMID: 36275563 PMCID: PMC9583260 DOI: 10.3389/fpls.2022.907937] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 09/20/2022] [Indexed: 05/14/2023]
Abstract
Salinity stress is one of the primary threats to agricultural crops resulting in impaired crop growth and development. Although cotton is considered as reasonably salt tolerant, it is sensitive to salt stress at some critical stages like germination, flowering, boll formation, resulting in reduced biomass and fiber production. The mechanism of partial ion exclusion (exclusion of Na+ and/or Cl-) in cotton appears to be responsible for the pattern of uptake and accumulation of harmful ions (Na+ and Cl) in tissues of plants exposed to saline conditions. Maintaining high tissue K+/Na+ and Ca2+/Na+ ratios has been proposed as a key selection factor for salt tolerance in cotton. The key adaptation mechanism in cotton under salt stress is excessive sodium exclusion or compartmentation. Among the cultivated species of cotton, Egyptian cotton (Gossypium barbadense L.) exhibit better salt tolerance with good fiber quality traits as compared to most cultivated cotton and it can be used to improve five quality traits and transfer salt tolerance into Upland or American cotton (Gossypium hirsutum L.) by interspecific introgression. Cotton genetic studies on salt tolerance revealed that the majority of growth, yield, and fiber traits are genetically determined, and controlled by quantitative trait loci (QTLs). Molecular markers linked to genes or QTLs affecting key traits have been identified, and they could be utilized as an indirect selection criterion to enhance breeding efficiency through marker-assisted selection (MAS). Transfer of genes for compatible solute, which are an important aspect of ion compartmentation, into salt-sensitive species is, theoretically, a simple strategy to improve tolerance. The expression of particular stress-related genes is involved in plant adaptation to environmental stressors. As a result, enhancing tolerance to salt stress can be achieved by marker assisted selection added with modern gene editing tools can boost the breeding strategies that defend and uphold the structure and function of cellular components. The intent of this review was to recapitulate the advancements in salt screening methods, tolerant germplasm sources and their inheritance, biochemical, morpho-physiological, and molecular characteristics, transgenic approaches, and QTLs for salt tolerance in cotton.
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Affiliation(s)
- Zahra Maryum
- Nuclear Institute for Agriculture and Biology-Constituent College (NIAB-C), Pakistan Institute of Engineering and Applied Science Nilore, Islamabad, Pakistan
| | - Tahira Luqman
- Nuclear Institute for Agriculture and Biology-Constituent College (NIAB-C), Pakistan Institute of Engineering and Applied Science Nilore, Islamabad, Pakistan
| | - Sahar Nadeem
- Nuclear Institute for Agriculture and Biology-Constituent College (NIAB-C), Pakistan Institute of Engineering and Applied Science Nilore, Islamabad, Pakistan
| | - Sana Muhy Ud Din Khan
- Plant Breeding and Genetics Division, Cotton Group, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Baohua Wang
- School of Life Sciences, Nantong University, Nantong, China
| | - Allah Ditta
- Nuclear Institute for Agriculture and Biology-Constituent College (NIAB-C), Pakistan Institute of Engineering and Applied Science Nilore, Islamabad, Pakistan
- Plant Breeding and Genetics Division, Cotton Group, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Muhammad Kashif Riaz Khan
- Nuclear Institute for Agriculture and Biology-Constituent College (NIAB-C), Pakistan Institute of Engineering and Applied Science Nilore, Islamabad, Pakistan
- Plant Breeding and Genetics Division, Cotton Group, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
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Molecular Pathways of WRKY Genes in Regulating Plant Salinity Tolerance. Int J Mol Sci 2022; 23:ijms231810947. [PMID: 36142857 PMCID: PMC9502527 DOI: 10.3390/ijms231810947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
Salinity is a natural and anthropogenic process that plants overcome using various responses. Salinity imposes a two-phase effect, simplified into the initial osmotic challenges and subsequent salinity-specific ion toxicities from continual exposure to sodium and chloride ions. Plant responses to salinity encompass a complex gene network involving osmotic balance, ion transport, antioxidant response, and hormone signaling pathways typically mediated by transcription factors. One particular transcription factor mega family, WRKY, is a principal regulator of salinity responses. Here, we categorize a collection of known salinity-responding WRKYs and summarize their molecular pathways. WRKYs collectively play a part in regulating osmotic balance, ion transport response, antioxidant response, and hormone signaling pathways in plants. Particular attention is given to the hormone signaling pathway to illuminate the relationship between WRKYs and abscisic acid signaling. Observed trends among WRKYs are highlighted, including group II WRKYs as major regulators of the salinity response. We recommend renaming existing WRKYs and adopting a naming system to a standardized format based on protein structure.
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Guo X, Ullah A, Siuta D, Kukfisz B, Iqbal S. Role of WRKY Transcription Factors in Regulation of Abiotic Stress Responses in Cotton. Life (Basel) 2022; 12:life12091410. [PMID: 36143446 PMCID: PMC9504182 DOI: 10.3390/life12091410] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
Environmental factors are the major constraints in sustainable agriculture. WRKY proteins are a large family of transcription factors (TFs) that regulate various developmental processes and stress responses in plants, including cotton. On the basis of Gossypium raimondii genome sequencing, WRKY TFs have been identified in cotton and characterized for their functions in abiotic stress responses. WRKY members of cotton play a significant role in the regulation of abiotic stresses, i.e., drought, salt, and extreme temperatures. These TFs either activate or repress various signaling pathways such as abscisic acid, jasmonic acid, salicylic acid, mitogen-activated protein kinases (MAPK), and the scavenging of reactive oxygen species. WRKY-associated genes in cotton have been genetically engineered in Arabidopsis, Nicotiana, and Gossypium successfully, which subsequently enhanced tolerance in corresponding plants against abiotic stresses. Although a few review reports are available for WRKY TFs, there is no critical report available on the WRKY TFs of cotton. Hereby, the role of cotton WRKY TFs in environmental stress responses is studied to enhance the understanding of abiotic stress response and further improve in cotton plants.
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Affiliation(s)
- Xiaoqiang Guo
- College of Life Science and Technology, Longdong University, Qingyang 745000, China
- Correspondence: (X.G.); (A.U.)
| | - Abid Ullah
- Department of Botany, Post Graduate College Dargai, Malakand 23060, Khyber Pakhtunkhwa, Pakistan
- Correspondence: (X.G.); (A.U.)
| | - Dorota Siuta
- Faculty of Process and Environmental Engineering, Lodz University of Technology, Wolczanska Str. 213, 90-924 Lodz, Poland
| | - Bożena Kukfisz
- Faculty of Security Engineering and Civil Protection, The Main School of Fire Service, 01-629 Warsaw, Poland
| | - Shehzad Iqbal
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Gao Y, Jiang Z, Shi M, Zhou Y, Huo L, Li X, Xu K. Comparative transcriptome provides insight into responding mechanism of waterlogging stress in Actinidia valvata Dunn. Gene 2022; 845:146843. [PMID: 36041594 DOI: 10.1016/j.gene.2022.146843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/20/2022] [Accepted: 08/23/2022] [Indexed: 11/04/2022]
Abstract
Kiwifruit is one of the most popular fruits, and the area of its cultivation in China has grown rapidly over the last decade. However, kiwifruit vines are vulnerable to waterlogging, especially in the extensive areas of south China where it is grown. This has become an important factor limiting yields. Therefore, it is necessary to clarify the responses of kiwifruit to waterlogging. Here, we have selected Actinidia valvata Dunn which is able to withstand waterlogging conditions and the waterlogging-susceptible Actinidia deliciosa to perform the RNA-seq of roots under waterlogging stress. Seedling roots of Actinidia valvata Dunn and Actinidia deliciosa presented distinct root phenotypes after waterlogging treatments. Genome mapping showed a large genome difference between Actinidia valvata Dunn and Actinidia deliciosa. Transcription factors MYB, MYB-related, AP2-EREBP, bHLH, WRKY, and NAC were identified as the key genes involved in the response to waterlogging stress of kiwifruit. Meanwhile, the MAPK signaling pathway and the glycolysis/gluconeogenesis pathway were identified as the vital pathways involved in the response to waterlogging, and key genes were identified from these two pathways. These results will broaden our understanding of transcriptional response of waterlogging stress and will provide new insights into the molecular mechanisms associated with waterlogging stress. Furthermore, identification of the genes responsible will assist in the breeding of kiwifruit tolerant of waterlogging.
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Affiliation(s)
- Yongbin Gao
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China
| | - Zeyu Jiang
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China
| | - Mengqi Shi
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China
| | - Yifei Zhou
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China
| | - Liuqing Huo
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China
| | - Xiaolong Li
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China.
| | - Kai Xu
- College of Horticulture Science, Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A & F University, Hangzhou, 311300, China.
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23
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A novel WRKY34-bZIP3 module regulates phenolic acid and tanshinone biosynthesis in Salvia miltiorrhiza. Metab Eng 2022; 73:182-191. [DOI: 10.1016/j.ymben.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/26/2022] [Accepted: 08/01/2022] [Indexed: 11/18/2022]
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Lim C, Kang K, Shim Y, Yoo SC, Paek NC. Inactivating transcription factor OsWRKY5 enhances drought tolerance through abscisic acid signaling pathways. PLANT PHYSIOLOGY 2022; 188:1900-1916. [PMID: 34718775 PMCID: PMC8968288 DOI: 10.1093/plphys/kiab492] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 09/27/2021] [Indexed: 05/18/2023]
Abstract
During crop cultivation, water-deficit conditions retard growth, thus reducing crop productivity. Therefore, uncovering the mechanisms behind drought tolerance is a critical task for crop improvement. Here, we show that the rice (Oryza sativa) WRKY transcription factor OsWRKY5 negatively regulates drought tolerance. We determined that OsWRKY5 was mainly expressed in developing leaves at the seedling and heading stages, and that its expression was reduced by drought stress and by treatment with NaCl, mannitol, and abscisic acid (ABA). Notably, the genome-edited loss-of-function alleles oswrky5-2 and oswrky5-3 conferred enhanced drought tolerance, measured as plant growth under water-deficit conditions. Conversely, the overexpression of OsWRKY5 in the activation-tagged line oswrky5-D resulted in higher susceptibility under the same conditions. The loss of OsWRKY5 activity increased sensitivity to ABA, thus promoting ABA-dependent stomatal closure. Transcriptome deep sequencing and reverse transcription quantitative polymerase chain reaction analyses demonstrated that the expression of abiotic stress-related genes including rice MYB2 (OsMYB2) was upregulated in oswrky5 knockout mutants and downregulated in oswrky5-D mutants. Moreover, dual-luciferase, yeast one-hybrid, and chromatin immunoprecipitation assays showed that OsWRKY5 directly binds to the W-box sequences in the promoter region of OsMYB2 and represses OsMYB2 expression, thus downregulating genes downstream of OsMYB2 in the ABA signaling pathways. Our results demonstrate that OsWRKY5 functions as a negative regulator of ABA-induced drought stress tolerance, strongly suggesting that inactivation of OsWRKY5 or manipulation of key OsWRKY5 targets could be useful to improve drought tolerance in rice cultivars.
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Affiliation(s)
| | | | - Yejin Shim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Soo-Cheul Yoo
- Department of Plant Life and Environmental Science, Hankyong National University, Anseong 17579, Republic of Korea
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Jia C, Wang Z, Wang J, Miao H, Zhang J, Xu B, Liu J, Jin Z, Liu J. Genome-Wide Analysis of the Banana WRKY Transcription Factor Gene Family Closely Related to Fruit Ripening and Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11050662. [PMID: 35270130 PMCID: PMC8912484 DOI: 10.3390/plants11050662] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/14/2022] [Accepted: 02/24/2022] [Indexed: 05/11/2023]
Abstract
WRKY transcription factors (TFs) play an important role in plant responses to biotic and abiotic stress as well as in plant growth and development. In the present study, bioinformatics methods were used to identify members of the WRKY transcription factor family in the Musa acuminata (DH-Pahang) genome (version 2). A total of 164 MaWRKYs were identified and phylogenetic analysis showed that MaWRKYs could be categorized into three subfamilies. Overall, the 162 MaWRKYs were distributed on 11 chromosomes, and 2 genes were not located on the chromosome. There were 31 collinear genes from segmental duplication and 7 pairs of genes from tandem duplication. RNA-sequencing was used to analyze the expression profiles of MaWRKYs in different fruit development, ripening stages, under various abiotic and biotic stressors. Most of the MaWRKYs showed a variety of expression patterns in the banana fruit development and ripening stages. Some MaWRKYs responded to abiotic stress, such as low temperature, drought, and salt stress. Most differentially expressed MaWRKYs were downregulated during banana's response to Foc TR4 infection, which plays an important role in physiological regulation to stress. Our findings indicate that MaWRKY21 directly binds to the W-box of the MaICS promoter to decrease MaICS transcription and then reduce the enzyme activity. These studies have improved our understanding of the molecular basis for the development and stress resistance of an important banana variety.
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Affiliation(s)
- Caihong Jia
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
| | - Zhuo Wang
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresource, Hainan Academy of Tropical Agricultural Resource, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jingyi Wang
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
| | - Hongxia Miao
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresource, Hainan Academy of Tropical Agricultural Resource, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jianbin Zhang
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
| | - Biyu Xu
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
| | - Juhua Liu
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresource, Hainan Academy of Tropical Agricultural Resource, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Correspondence: (J.L.); (Z.J.); (J.L.)
| | - Zhiqiang Jin
- Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (Z.W.); (J.W.); (H.M.); (J.Z.); (B.X.)
- Correspondence: (J.L.); (Z.J.); (J.L.)
| | - Jihong Liu
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China;
- Correspondence: (J.L.); (Z.J.); (J.L.)
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Yu S, Lan X, Zhou J, Gao K, Zhong C, Xie J. Dioscorea composita WRKY3 positively regulates salt-stress tolerance in transgenic Arabidopsis thaliana. JOURNAL OF PLANT PHYSIOLOGY 2022; 269:153592. [PMID: 34923363 DOI: 10.1016/j.jplph.2021.153592] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 05/27/2023]
Abstract
Dioscorea composita (D. composita) is a perennial dioecious herb with strong biotic and abiotic stress tolerance. However, what roles WRKY transcription factors might play in regulating abiotic stress responses in this medicinal plant is unknown. Here, we isolated DcWRKY3 from D. composita and analyzed its role in stress tolerance. DcWRKY3 is a group I WRKY transcription factor that localized to the nucleus and specifically bound to the W-box cis-elements, but lacked transcriptional activation activity in yeast cells. The expression of DcWRKY3 was strongly affected by salt stress. The heterologous expression of DcWRKY3 strongly enhanced the seed germination rate and root length of Arabidopsis thaliana under salt stress. The DcWRKY3-expressing transgenic lines (DcWRKY3-OEs) also showed higher proline content and antioxidant enzyme activity but lower malondialdehyde and reactive oxygen (ROS) levels compared with the wild type. Moreover, these plants showed upregulated expression of genes related to the salt-stress response and ROS clearance. These findings indicate that DcWRKY3 plays a positive role in the salt-stress response by improving the ROS scavenging ability and maintaining the balance of osmotic pressure in plants. Further studies showed that DcWRKY3 binds to the promoter of AtP5CS1, but not AtSOD and AtRD22, suggesting that DcWRKY3 improves salt tolerance in plants by directly or indirectly regulating the expression of downstream genes. This functional characterization of DcWRKY3 provides new insight into the molecular mechanism underlying the response of D. composita to salt stress.
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Affiliation(s)
- Shangjie Yu
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China
| | - Xin Lan
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China
| | - Jianchan Zhou
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China
| | - Kaixiang Gao
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China
| | - Chunmei Zhong
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China.
| | - Jun Xie
- Institute of Biomass Engineering, South China Agricultural University; Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs; Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Guangzhou 510642, PR China.
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Wang W, Li T, Chen Q, Yao S, Deng L, Zeng K. CsWRKY25 Improves Resistance of Citrus Fruit to Penicillium digitatum via Modulating Reactive Oxygen Species Production. FRONTIERS IN PLANT SCIENCE 2022; 12:818198. [PMID: 35082819 PMCID: PMC8784754 DOI: 10.3389/fpls.2021.818198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/15/2021] [Indexed: 05/27/2023]
Abstract
WRKY transcription factors (TFs) play crucial roles in the regulation of biotic stress. Citrus is the most productive fruit in the world. It is of great value to investigate the regulatory molecular mechanism of WRKYs in improving disease resistance. In this research, the transcription level of CsWRKY25 was upregulated in P. digitatum infected citrus peel, and CsWRKY25 activated the expression of three target genes (RbohB, RbohD, and PR10). Besides, the Agrobacterium-mediated transient overexpression of CsWRKY25 has also been shown to enhance resistance to P. digitatum in citrus, and caused the accumulation of hydrogen peroxide and lignin. The accumulation of ROS also activated the antioxidant system, the catalase (CAT), peroxidase (POD), and cinnamyl alcohol dehydrogenase (CAD) genes were significant upregulated, leading to activation of antioxidant enzymes. In addition, the up-regulated expression of MPK5 and MPK6 genes suggested that the regulatory role of CsWRKY25 might be related to the phosphorylation process. In conclusion, CsWRKY25 could enhance the resistance to P. digitatum via modulating ROS production and PR genes in citrus peel.
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Affiliation(s)
- Wenjun Wang
- College of Food Science, Southwest University, Chongqing, China
| | - Ting Li
- College of Food Science, Southwest University, Chongqing, China
| | - Qi Chen
- College of Food Science, Southwest University, Chongqing, China
| | - Shixiang Yao
- College of Food Science, Southwest University, Chongqing, China
- Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Lili Deng
- College of Food Science, Southwest University, Chongqing, China
- Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing, China
- Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
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Liang Y, Wei K, Wei F, Qin S, Deng C, Lin Y, Li M, Gu L, Wei G, Miao J, Zhang Z. Integrated transcriptome and small RNA sequencing analyses reveal a drought stress response network in Sophora tonkinensis. BMC PLANT BIOLOGY 2021; 21:566. [PMID: 34856930 PMCID: PMC8641164 DOI: 10.1186/s12870-021-03334-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Sophora tonkinensis Gagnep is a traditional Chinese medical plant that is mainly cultivated in southern China. Drought stress is one of the major abiotic stresses that negatively impacts S. tonkinensis growth. However, the molecular mechanisms governing the responses to drought stress in S. tonkinensis at the transcriptional and posttranscriptional levels are not well understood. RESULTS To identify genes and miRNAs involved in drought stress responses in S. tonkinensis, both mRNA and small RNA sequencing was performed in root samples under control, mild drought, and severe drought conditions. mRNA sequencing revealed 66,476 unigenes, and the differentially expressed unigenes (DEGs) were associated with several key pathways, including phenylpropanoid biosynthesis, sugar metabolism, and quinolizidine alkaloid biosynthesis pathways. A total of 10 and 30 transcription factors (TFs) were identified among the DEGs under mild and severe drought stress, respectively. Moreover, small RNA sequencing revealed a total of 368 miRNAs, including 255 known miRNAs and 113 novel miRNAs. The differentially expressed miRNAs and their target genes were involved in the regulation of plant hormone signal transduction, the spliceosome, and ribosomes. Analysis of the regulatory network involved in the response to drought stress revealed 37 differentially expressed miRNA-mRNA pairs. CONCLUSION This is the first study to simultaneously profile the expression patterns of mRNAs and miRNAs on a genome-wide scale to elucidate the molecular mechanisms of the drought stress responses of S. tonkinensis. Our results suggest that S. tonkinensis implements diverse mechanisms to modulate its responses to drought stress.
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Affiliation(s)
- Ying Liang
- College of Agriculture, Fujian Agriculture and Forestry University, No. 15 Shangxiadian Road, Cangshan District, Fuzhou, 350002, People's Republic of China
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Kunhua Wei
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Fan Wei
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Shuangshuang Qin
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Chuanhua Deng
- Guangxi Forest Inventory and Planning Institute, Nanning, 530011, China
| | - Yang Lin
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Mingjie Li
- College of Agriculture, Fujian Agriculture and Forestry University, No. 15 Shangxiadian Road, Cangshan District, Fuzhou, 350002, People's Republic of China
| | - Li Gu
- College of Agriculture, Fujian Agriculture and Forestry University, No. 15 Shangxiadian Road, Cangshan District, Fuzhou, 350002, People's Republic of China
| | - Guili Wei
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China
| | - Jianhua Miao
- Guangxi key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, No. 189 Changgang Road, Xingning District, Nanning, 530023, People's Republic of China.
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, 530023, China.
| | - Zhongyi Zhang
- College of Agriculture, Fujian Agriculture and Forestry University, No. 15 Shangxiadian Road, Cangshan District, Fuzhou, 350002, People's Republic of China.
- Key Laboratory of Genetics, Breeding and Comprehensive Utilization of Crops, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Shu P, Zhang S, Li Y, Wang X, Yao L, Sheng J, Shen L. Over-expression of SlWRKY46 in tomato plants increases susceptibility to Botrytis cinerea by modulating ROS homeostasis and SA and JA signaling pathways. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:1-9. [PMID: 34087740 DOI: 10.1016/j.plaphy.2021.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
WRKY, as one of the largest families of transcription factors (TFs), binds to cis-acting elements of downstream genes to regulate biotic and abiotic stress. However, the role of SlWRKY46 in fungal disease response induced by Botrytis cinerea (B.cinerea) and potential mechanism remains obscure. To ascertain the role of SlWRKY46 in response to B.cinerea, we constructed SlWRKY46-overexpression plants, which were then inoculated with B.cinerea. SlWRKY46-overexpression plants were more susceptible to B.cinerea and accompanied by the inhibited activities of phenylalanine ammonialyase (PAL), polyphenol oxidase (PPO), chitinase (CHI), and β-1,3-glucanase (GLU). Additionally, SlWRKY46-overexpression plants showed the decreased activities of ascorbate peroxidase (APX), superoxide dismutase (SOD) and the content of H2O2, and the increased content of O2•-. Moreover, over-expression of SlWRKY46 suppressed the salicylic acid (SA) and jasmonic acid (JA) marker genes, pathogenesis related protein (PR1), and proteinase inhibitors (PI Ⅰ and PI Ⅱ) and consequently aggravated the disease symptoms. Therefore, we speculated that SlWRKY46 played negative regulatory roles in B. cinerea infection probably by inhibiting the activities of antioxidants and disease resistance enzymes, regulating SA and JA signaling pathways and modulating reactive oxygen (ROS) homeostasis.
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Affiliation(s)
- Pan Shu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Shujuan Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yujing Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Xinyu Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Lan Yao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Jiping Sheng
- School of Agricultural Economics and Rural Development, Renmin University of China, Beijing, 100872, China
| | - Lin Shen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
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Wang J, Sheng J, Zhu J, Hu Z, Diao Y. Comparative transcriptome analysis and identification of candidate adaptive evolution genes of Miscanthus lutarioriparius and Miscanthus sacchariflorus. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1499-1512. [PMID: 34366592 PMCID: PMC8295449 DOI: 10.1007/s12298-021-01030-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
UNLABELLED Miscanthus species are perennial C4 grasses that are considered promising energy crops because of their high biomass yields, excellent adaptability and low management costs. Miscanthus lutarioriparius and Miscanthus sacchariflorus are closely related subspecies that are distributed in different habitats. However, there are only a few reports on the mechanisms by which Miscanthus adapts to different environments. Here, comparative transcriptomic and morphological analyses were used to study the evolutionary adaptation of M. lutarioriparius and M. sacchariflorus to different habitats. In total, among 7586 identified orthologs, 2060 orthologs involved in phenylpropanoid biosynthesis and plant hormones were differentially expressed between the two species. Through an analysis of the Ka/Ks ratios of the orthologs, we estimated that the divergence time between the two species was approximately 4.37 Mya. In addition, 37 candidate positively selected orthologs (PSGs) that played important roles in the adaptation of these species to different habitats were identified. Then, the expression levels of 20 PSGs in response to flooding and drought stress were analyzed, and the analysis revealed significant changes in their expression levels. These results facilitate our understanding of the evolutionary adaptation to habitats and the speciation of M. lutarioriparius and M. sacchariflorus. We hypothesise that lignin synthesis genes are the main cause of the morphological differences between the two species. In summary, the plant nonspecific phospholipase C gene family and the receptor-like protein kinase gene family played important roles in the evolution of these two species. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-01030-1.
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Affiliation(s)
- Jia Wang
- School of Medicine, Anhui University of Science and Technology, Huainan, 232001 People’s Republic of China
| | - Jiajing Sheng
- College of Life Sciences, Nantong University, Nantong, 226019 People’s Republic of China
| | - Jianyong Zhu
- College of Forestry and Life Sciences, Chongqing University of Arts and Sciences, Chongqing, 402160 People’s Republic of China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Ying Diao
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
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Manna M, Thakur T, Chirom O, Mandlik R, Deshmukh R, Salvi P. Transcription factors as key molecular target to strengthen the drought stress tolerance in plants. PHYSIOLOGIA PLANTARUM 2021; 172:847-868. [PMID: 33180329 DOI: 10.1111/ppl.13268] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/23/2020] [Accepted: 11/07/2020] [Indexed: 05/03/2023]
Abstract
Amid apprehension of global climate change, crop plants are inevitably confronted with a myriad of abiotic stress factors during their growth that inflicts a serious threat to their development and overall productivity. These abiotic stresses comprise extreme temperature, pH, high saline soil, and drought stress. Among different abiotic stresses, drought is considered the most calamitous stressor with its serious impact on the crops' yield stability. The development of climate-resilient crops that withstands reduced water availability is a major focus of the scientific fraternity to ensure the food security of the sharply increasing population. Numerous studies aim to recognize the key regulators of molecular and biochemical processes associated with drought stress tolerance response. A few potential candidates are now considered as promising targets for crop improvement. Transcription factors act as a key regulatory switch controlling the gene expression of diverse biological processes and, eventually, the metabolic processes. Understanding the role and regulation of the transcription factors will facilitate the crop improvement strategies intending to develop and deliver agronomically-superior crops. Therefore, in this review, we have emphasized the molecular avenues of the transcription factors that can be exploited to engineer drought tolerance potential in crop plants. We have discussed the molecular role of several transcription factors, such as basic leucine zipper (bZIP), dehydration responsive element binding (DREB), DNA binding with one finger (DOF), heat shock factor (HSF), MYB, NAC, TEOSINTE BRANCHED1/CYCLOIDEA/PCF (TCP), and WRKY. We have also highlighted candidate transcription factors that can be used for the development of drought-tolerant crops.
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Affiliation(s)
- Mrinalini Manna
- National Institute of Plant Genome Research, New Delhi, India
| | - Tanika Thakur
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Oceania Chirom
- National Institute of Plant Genome Research, New Delhi, India
| | - Rushil Mandlik
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Rupesh Deshmukh
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Prafull Salvi
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
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Mota APZ, Brasileiro ACM, Vidigal B, Oliveira TN, da Cunha Quintana Martins A, Saraiva MADP, de Araújo ACG, Togawa RC, Grossi-de-Sá MF, Guimaraes PM. Defining the combined stress response in wild Arachis. Sci Rep 2021; 11:11097. [PMID: 34045561 PMCID: PMC8160017 DOI: 10.1038/s41598-021-90607-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/11/2021] [Indexed: 02/04/2023] Open
Abstract
Nematodes and drought are major constraints in tropical agriculture and often occur simultaneously. Plant responses to these stresses are complex and require crosstalk between biotic and abiotic signaling pathways. In this study, we explored the transcriptome data of wild Arachis species subjected to drought (A-metaDEG) and the root-knot nematode Meloidogyne arenaria (B-metaDEG) via meta-analysis, to identify core-stress responsive genes to each individual and concurrent stresses in these species. Transcriptome analysis of a nematode/drought bioassay (cross-stress) showed that the set of stress responsive DEGs to concurrent stress is distinct from those resulting from overlapping A- and B-metaDEGs, indicating a specialized and unique response to combined stresses in wild Arachis. Whilst individual biotic and abiotic stresses elicit hormone-responsive genes, most notably in the jasmonic and abscisic acid pathways, combined stresses seem to trigger mainly the ethylene hormone pathway. The overexpression of a cross-stress tolerance candidate gene identified here, an endochitinase-encoding gene (AsECHI) from Arachis stenosperma, reduced up to 30% of M. incognita infection and increased post-drought recovery in Arabidopsis plants submitted to both stresses. The elucidation of the network of cross-stress responsive genes in Arachis contributes to better understanding the complex regulation of biotic and abiotic responses in plants facilitating more adequate crop breeding for combined stress tolerance.
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Affiliation(s)
- Ana Paula Zotta Mota
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.8532.c0000 0001 2200 7498Universidade Federal do Rio Grande do Sul, Porto Alegre, RS Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil ,grid.8183.20000 0001 2153 9871Present Address: CIRAD, UMR AGAP, 34398 Montpellier, France ,grid.463758.b0000 0004 0445 8705Present Address: AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Ana Cristina Miranda Brasileiro
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Bruna Vidigal
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Thais Nicolini Oliveira
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Andressa da Cunha Quintana Martins
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Mario Alfredo de Passos Saraiva
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Ana Claudia Guerra de Araújo
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Roberto C. Togawa
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Maria Fatima Grossi-de-Sá
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil ,grid.411952.a0000 0001 1882 0945Universidade Católica de Brasília (UCB)-Genomic Sciences and Biotechnology, Brasilia, DF Brazil
| | - Patricia Messenberg Guimaraes
- grid.460200.00000 0004 0541 873XEMBRAPA Recursos Geneticos e Biotecnologia, Brasilia, DF Brazil ,grid.468194.6National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
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Validation of molecular response of tuberization in response to elevated temperature by using a transient Virus Induced Gene Silencing (VIGS) in potato. Funct Integr Genomics 2021; 21:215-229. [PMID: 33611637 DOI: 10.1007/s10142-021-00771-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/25/2020] [Accepted: 01/30/2021] [Indexed: 10/22/2022]
Abstract
Temperature plays an important role in potato tuberization. The ideal night temperature for tuber formation is ~17 °C while temperature beyond 22 °C drastically reduces the tuber yield. Moreover, high temperature has several undesirable effects on the plant and tubers. Investigation of the genes involved in tuberization under heat stress can be helpful in the generation of heat-tolerant potato varieties. Five genes, including StSSH2 (succinic semialdehyde reductase isoform 2), StWTF (WRKY transcription factor), StUGT (UDP-glucosyltransferase), StBHP (Bel1 homeotic protein), and StFLTP (FLOWERING LOCUS T protein), involved in tuberization and heat stress in potato were investigated. The results of our microarray analysis suggested that these genes regulate and function as transcriptional factors, hormonal signaling, cellular homeostasis, and mobile tuberization signals under elevated temperature in contrasting KS (Kufri Surya) and KCM (Kufri Chandramukhi) potato cultivars. However, no detailed report is available which establishes functions of these genes in tuberization under heat stress. Thus, the present study was designed to validate the functions of these genes in tuber signaling and heat tolerance using virus-induced gene silencing (VIGS). Results indicated that VIGS transformed plants had a consequential reduction in StSSH2, StWTF, StUGT, StBHP, and StFLTP transcripts compared to the control plants. Phenotypic observations suggest an increase in plant senescence, reductions to both number and size of tubers, and a decrease in plant dry matter compared to the control plants. We also establish the potency of VIGS as a high-throughput technique for functional validation of genes.
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Ramos RN, Martin GB, Pombo MA, Rosli HG. WRKY22 and WRKY25 transcription factors are positive regulators of defense responses in Nicotiana benthamiana. PLANT MOLECULAR BIOLOGY 2021; 105:65-82. [PMID: 32909182 DOI: 10.1007/s11103-020-01069-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 09/02/2020] [Indexed: 06/11/2023]
Abstract
KEY MESSAGE NbWRKY22 and NbWRKY25 are required for full activation of bacteria-associated pattern- and effector-triggered immunity as well as for the response to other non-bacterial defense elicitors. Plants defend themselves against pathogens using a two-layered immune system. Pattern-triggered immunity (PTI) can be activated upon recognition of epitopes from flagellin including flg22. Pseudomonas syringae pv. tomato (Pst) delivers effector proteins into the plant cell to promote host susceptibility. However, some plants express resistance (R) proteins that recognize specific effectors leading to the activation of effector-triggered immunity (ETI). Resistant tomato lines such as Rio Grande-PtoR (RG-PtoR) recognize two Pst effectors, AvrPto and AvrPtoB, and activate ETI through the Pto/Prf protein complex. Using RNA-seq, we identified two tomato WRKY transcription factor genes, SlWRKY22 and SlWRKY25, whose expression is increased during Pst-induced ETI. Silencing of the WRKY25/22 orthologous genes in Nicotiana benthamiana led to a delay in programmed cell death normally associated with AvrPto recognition or several non-bacterial effector/R protein pairs. An increase in disease symptoms was observed in silenced plants infiltrated with Pseudomonas syringae pv. tabaci expressing AvrPto or HopQ1-1. Expression of both tomato WRKY genes is also induced upon treatment with flg22 and callose deposition and cell death suppression assays in WRKY25/22-silenced N. benthamiana plants supported their involvement in PTI. Our results reveal an important role for two WRKYs as positive regulators of plant immunity against bacterial and potentially non-bacterial pathogens.
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Affiliation(s)
- Romina N Ramos
- INFIVE, Instituto de Fisiología Vegetal, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina
- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Gregory B Martin
- Boyce Thompson Institute for Plant Research, 533 Tower Road, Ithaca, NY, 14853, USA
- Section of Plant Pathology and Plant-Microbe Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Marina A Pombo
- INFIVE, Instituto de Fisiología Vegetal, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina.
| | - Hernan G Rosli
- INFIVE, Instituto de Fisiología Vegetal, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina
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Billah M, Li F, Yang Z. Regulatory Network of Cotton Genes in Response to Salt, Drought and Wilt Diseases ( Verticillium and Fusarium): Progress and Perspective. FRONTIERS IN PLANT SCIENCE 2021; 12:759245. [PMID: 34912357 PMCID: PMC8666531 DOI: 10.3389/fpls.2021.759245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/13/2021] [Indexed: 05/11/2023]
Abstract
In environmental conditions, crop plants are extremely affected by multiple abiotic stresses including salinity, drought, heat, and cold, as well as several biotic stresses such as pests and pathogens. However, salinity, drought, and wilt diseases (e.g., Fusarium and Verticillium) are considered the most destructive environmental stresses to cotton plants. These cause severe growth interruption and yield loss of cotton. Since cotton crops are central contributors to total worldwide fiber production, and also important for oilseed crops, it is essential to improve stress tolerant cultivars to secure future sustainable crop production under adverse environments. Plants have evolved complex mechanisms to respond and acclimate to adverse stress conditions at both physiological and molecular levels. Recent progresses in molecular genetics have delivered new insights into the regulatory network system of plant genes, which generally includes defense of cell membranes and proteins, signaling cascades and transcriptional control, and ion uptake and transport and their relevant biochemical pathways and signal factors. In this review, we mainly summarize recent progress concerning several resistance-related genes of cotton plants in response to abiotic (salt and drought) and biotic (Fusarium and Verticillium wilt) stresses and classify them according to their molecular functions to better understand the genetic network. Moreover, this review proposes that studies of stress related genes will advance the security of cotton yield and production under a changing climate and that these genes should be incorporated in the development of cotton tolerant to salt, drought, and fungal wilt diseases (Verticillium and Fusarium).
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Affiliation(s)
- Masum Billah
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Fuguang Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- *Correspondence: Fuguang Li,
| | - Zhaoen Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- Zhaoen Yang,
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Yang QQ, Yang F, Zhao YQ, Lu XJ, Liu CY, Zhang BW, Ge J, Fan JD. Genome-wide identification and functional characterization of WRKY transcription factors involved in the response to salt and heat stress in garlic ( Allium sativum L). BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2022.2045218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Qing-Qing Yang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Feng Yang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Yong-Qiang Zhao
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Xin-Juan Lu
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Can-Yu Liu
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Bi-Wei Zhang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Jie Ge
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
| | - Ji-De Fan
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, Jiangsu, PR China
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Strawberry FaWRKY25 Transcription Factor Negatively Regulated the Resistance of Strawberry Fruits to Botrytis cinerea. Genes (Basel) 2020; 12:genes12010056. [PMID: 33396436 PMCID: PMC7824073 DOI: 10.3390/genes12010056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/12/2020] [Accepted: 12/29/2020] [Indexed: 01/01/2023] Open
Abstract
WRKY genes and jasmonic acid (JA) play a crucial role in plants’ responses against biotic and abiotic stress. However, the regulating mechanism of WRKY genes on strawberry fruits’ resistance against Botrytis cinerea is largely unknown, and few studies have been performed on their effect on the JA-mediated defense mechanism against B. cinerea. This study explored the effect of FaWRKY25 on the JA-mediated strawberry resistance against B. cinerea. Results showed that the JA content decreased significantly as the fruits matured, whereas the FaWRKY25 expression rose substantially, which led to heightened susceptibility to B. cinerea and in strawberries. External JA treatment significantly increased the JA content in strawberries and reduced the FaWRKY25 expression, thereby enhancing the fruits’ resistance against B. cinerea. FaWRKY25 overexpression significantly lowered the fruits’ resistance against B. cinerea, whereas FaWRKY25 silencing significantly increased resistance. Moreover, FaWRKY25 overexpression significantly lowered the JA content, whereas FaWRKY25 silencing significantly increased it. FaWRKY25 expression level substantially affects the expression levels of genes related to JA biosynthesis and metabolism, other members of the WRKY family, and defense genes. Accordingly, FaWRKY25 plays a crucial role in regulating strawberries’ resistance against B. cinerea and may negatively regulate their JA-mediated resistance mechanism against B. cinerea.
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Wang D, Wang L, Su W, Ren Y, You C, Zhang C, Que Y, Su Y. A class III WRKY transcription factor in sugarcane was involved in biotic and abiotic stress responses. Sci Rep 2020; 10:20964. [PMID: 33262418 PMCID: PMC7708483 DOI: 10.1038/s41598-020-78007-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/19/2020] [Indexed: 01/03/2023] Open
Abstract
WRKY transcription factors play significant roles in plant stress responses. In this study, a class III WRKY gene ScWRKY5, was successfully isolated from sugarcane variety ROC22. The ScWRKY5 was a nucleus protein with transcriptional activation activity. The ScWRKY5 gene was constitutively expressed in all the sugarcane tissues, with the highest expression level in the stem epidermis and the lowest in the root. After inoculation with Sporisorium scitamineum for 1 d, the expression level of ScWRKY5 was significantly increased in two smut-resistant varieties (YZ01-1413 and LC05-136), while it was decreased in three smut-susceptible varieties (ROC22, YZ03-103, and FN40). Besides, the expression level of ScWRKY5 was increased by the plant hormones salicylic acid (SA) and abscisic acid (ABA), as well as the abiotic factors polyethylene glycol (PEG) and sodium chloride (NaCl). Transient overexpression of the ScWRKY5 gene enhanced the resistance of Nicotiana benthamiana to the tobacco bacterial pathogen Ralstonia solanacearum, however the transiently overexpressed N. benthamiana was more sensitive to the tobacco fungal pathogen Fusarium solani var. coeruleum. These results provide a reference for further research on the resistance function of sugarcane WRKY genes.
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Affiliation(s)
- Dongjiao Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Ling Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Weihua Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yongjuan Ren
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Chuihuai You
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Chang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
- Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
| | - Yachun Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
- Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
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Function and Mechanism of WRKY Transcription Factors in Abiotic Stress Responses of Plants. PLANTS 2020; 9:plants9111515. [PMID: 33171689 PMCID: PMC7695288 DOI: 10.3390/plants9111515] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/30/2020] [Accepted: 11/04/2020] [Indexed: 12/20/2022]
Abstract
The WRKY gene family is a plant-specific transcription factor (TF) group, playing important roles in many different response pathways of diverse abiotic stresses (drought, saline, alkali, temperature, and ultraviolet radiation, and so forth). In recent years, many studies have explored the role and mechanism of WRKY family members from model plants to agricultural crops and other species. Abiotic stress adversely affects the growth and development of plants. Thus, a review of WRKY with stress responses is important to increase our understanding of abiotic stress responses in plants. Here, we summarize the structural characteristics and regulatory mechanism of WRKY transcription factors and their responses to abiotic stress. We also discuss current issues and future perspectives of WRKY transcription factor research.
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Liu M, Zhang Q, Wang C, Meng T, Wang L, Chen C, Ren Z. CsWRKY10 mediates defence responses to Botrytis cinerea infection in Cucumis sativus. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 300:110640. [PMID: 33180717 DOI: 10.1016/j.plantsci.2020.110640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/16/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Cucumber (Cucumis sativus) is one of the most widely cultivated vegetable crops in the world, and its yield is often reduced due to the infection of Botrytis cinerea (B. cinerea), which causes a serious disease. However, few genes involved in the response to B. cinerea have been identified in cucumber. In this study, we identified that CsWRKY10 plays a key role in the cucumber resistance to B. cinerea because that the overexpression of CsWRKY10 significantly increased the susceptibility to B. cinerea in cucumber. After the pathogen infection, the enzyme activities of catalase, superoxide dismutase and peroxidase in transgenic plants were affected, resulting in the decrease in reactive oxygen species (ROS) contents. In addition, the light microscopic images showed that overexpression of CsWRKY10 promoted the spore germination and mycelia elongation of B. cinerea in cucumber. Importantly, after B. cinerea infection, the contents of jasmonic acid (JA) are decreased, and the expression levels of JA- and salicylic acid- related defence genes significantly changed in transgenic plants. In contrast, overexpression of CsWRKY10 enhanced resistance to Corynespora cassiicola in cucumber. Collectively, this study indicated that CsWRKY10 negatively regulates the resistance of cucumber to B. cinerea by reducing the ROS contents and inhibiting the JA-mediated resistance signalling pathway, but strengthens resistance to Corynespora cassiicola.
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Affiliation(s)
- Mengyu Liu
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Qingxia Zhang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Can Wang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Tianqi Meng
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Lina Wang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Chunhua Chen
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| | - Zhonghai Ren
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
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Sun H, Sun X, Wang H, Ma X. Advances in salt tolerance molecular mechanism in tobacco plants. Hereditas 2020; 157:5. [PMID: 32093781 PMCID: PMC7041081 DOI: 10.1186/s41065-020-00118-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 02/18/2020] [Indexed: 02/01/2023] Open
Abstract
Tobacco, an economic crop and important model plant, has received more progress in salt tolerance with the aid of transgenic technique. Salt stress has become a key research field in abiotic stress. The study of tobacco promotes the understanding about the important adjustment for survival in high salinity environments, including cellular ion transport, osmotic regulation, antioxidation, signal transduction and expression regulation, and protection of cells from stress damage. Genes, which response to salt, have been studied using targeted transgenic technologies in tobacco plants to investigate the molecular mechanisms. The transgenic tobacco plants exhibited higher seed germination and survival rates, better root and shoot growth under salt stress treatments. Transgenic approach could be the promising option for enhancing tobacco production under saline condition. This review highlighted the salt tolerance molecular mechanisms of tobacco.
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Affiliation(s)
- Haiji Sun
- School of Life Science, Shandong Normal University, Jinan, 250014 China
| | - Xiaowen Sun
- School of Life Science, Shandong Normal University, Jinan, 250014 China
| | - Hui Wang
- School of Life Science, Shandong Normal University, Jinan, 250014 China
| | - Xiaoli Ma
- Central laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, 250013 China
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Mahmood T, Khalid S, Abdullah M, Ahmed Z, Shah MKN, Ghafoor A, Du X. Insights into Drought Stress Signaling in Plants and the Molecular Genetic Basis of Cotton Drought Tolerance. Cells 2019; 9:E105. [PMID: 31906215 PMCID: PMC7016789 DOI: 10.3390/cells9010105] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 12/25/2019] [Accepted: 12/28/2019] [Indexed: 01/09/2023] Open
Abstract
Drought stress restricts plant growth and development by altering metabolic activity and biological functions. However, plants have evolved several cellular and molecular mechanisms to overcome drought stress. Drought tolerance is a multiplex trait involving the activation of signaling mechanisms and differentially expressed molecular responses. Broadly, drought tolerance comprises two steps: stress sensing/signaling and activation of various parallel stress responses (including physiological, molecular, and biochemical mechanisms) in plants. At the cellular level, drought induces oxidative stress by overproduction of reactive oxygen species (ROS), ultimately causing the cell membrane to rupture and stimulating various stress signaling pathways (ROS, mitogen-activated-protein-kinase, Ca2+, and hormone-mediated signaling). Drought-induced transcription factors activation and abscisic acid concentration co-ordinate the stress signaling and responses in cotton. The key responses against drought stress, are root development, stomatal closure, photosynthesis, hormone production, and ROS scavenging. The genetic basis, quantitative trait loci and genes of cotton drought tolerance are presented as examples of genetic resources in plants. Sustainable genetic improvements could be achieved through functional genomic approaches and genome modification techniques such as the CRISPR/Cas9 system aid the characterization of genes, sorted out from stress-related candidate single nucleotide polymorphisms, quantitative trait loci, and genes. Exploration of the genetic basis for superior candidate genes linked to stress physiology can be facilitated by integrated functional genomic approaches. We propose a third-generation sequencing approach coupled with genome-wide studies and functional genomic tools, including a comparative sequenced data (transcriptomics, proteomics, and epigenomic) analysis, which offer a platform to identify and characterize novel genes. This will provide information for better understanding the complex stress cellular biology of plants.
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Affiliation(s)
- Tahir Mahmood
- State Key Laboratory of Cotton Biology, Institute of Cotton Research (ICR), Chinese Academy of Agricultural Sciences (CAAS), Anyang 455000, China;
- Department of Plant Breeding and Genetics, Pir Mehar Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan; (S.K.); (M.A.)
| | - Shiguftah Khalid
- Department of Plant Breeding and Genetics, Pir Mehar Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan; (S.K.); (M.A.)
- National Agriculture Research Center (NARC), Pakistan Agriculture Research Council, Islamabad 44000, Pakistan
| | - Muhammad Abdullah
- Department of Plant Breeding and Genetics, Pir Mehar Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan; (S.K.); (M.A.)
| | - Zubair Ahmed
- National Agriculture Research Center (NARC), Pakistan Agriculture Research Council, Islamabad 44000, Pakistan
| | - Muhammad Kausar Nawaz Shah
- Department of Plant Breeding and Genetics, Pir Mehar Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan; (S.K.); (M.A.)
| | - Abdul Ghafoor
- Member of Plant Sciences Division, Pakistan Agricultural Council (PARC), Islamabad 44000, Pakistan
| | - Xiongming Du
- State Key Laboratory of Cotton Biology, Institute of Cotton Research (ICR), Chinese Academy of Agricultural Sciences (CAAS), Anyang 455000, China;
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
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Li Y, Zhang L, Zhu P, Cao Q, Sun J, Li Z, Xu T. Genome-wide identification, characterisation and functional evaluation of WRKY genes in the sweet potato wild ancestor Ipomoea trifida (H.B.K.) G. Don. under abiotic stresses. BMC Genet 2019; 20:90. [PMID: 31795942 PMCID: PMC6889533 DOI: 10.1186/s12863-019-0789-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/14/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND WRKY DNA-binding protein (WRKY) is a large gene family involved in plant responses and adaptation to salt, drought, cold and heat stresses. Sweet potato from the genus Ipomoea is a staple food crop, but the WRKY genes in Ipomoea species remain unknown to date. Hence, we carried out a genome-wide analysis of WRKYs in Ipomoea trifida (H.B.K.) G. Don., the wild ancestor of sweet potato. RESULTS A total of 83 WRKY genes encoding 96 proteins were identified in I. trifida, and their gene distribution, duplication, structure, phylogeny and expression patterns were studied. ItfWRKYs were distributed on 15 chromosomes of I. trifida. Gene duplication analysis showed that segmental duplication played an important role in the WRKY gene family expansion in I. trifida. Gene structure analysis showed that the intron-exon model of the ItfWRKY gene was highly conserved. Meanwhile, the ItfWRKYs were divided into five groups (I, IIa + IIb, IIc, IId + IIe and III) on the basis of the phylogenetic analysis on I. trifida and Arabidopsis thaliana WRKY proteins. In addition, gene expression profiles confirmed by quantitative polymerase chain reaction showed that ItfWRKYs were highly up-regulated or down-regulated under salt, drought, cold and heat stress conditions, implying that these genes play important roles in response and adaptation to abiotic stresses. CONCLUSIONS In summary, genome-wide identification, gene structure, phylogeny and expression analysis of WRKY gene in I. trifida provide basic information for further functional studies of ItfWRKYs and for the molecular breeding of sweet potato.
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Affiliation(s)
- Yuxia Li
- Key lab of phylogeny and comparative genomics of the Jiangsu province, Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, China
| | - Lei Zhang
- Key lab of phylogeny and comparative genomics of the Jiangsu province, Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, China
| | - Panpan Zhu
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, 500-757, South Korea
| | - Qinghe Cao
- Xuzhou Academy of Agricultural Sciences/Sweet Potato Research Institute, CAAS, Xuzhou, 221121, Jiangsu, China
| | - Jian Sun
- Key lab of phylogeny and comparative genomics of the Jiangsu province, Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, China
| | - Zongyun Li
- Key lab of phylogeny and comparative genomics of the Jiangsu province, Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, China.
| | - Tao Xu
- Key lab of phylogeny and comparative genomics of the Jiangsu province, Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, China.
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Liu X, Li D, Zhang S, Xu Y, Zhang Z. Genome-wide characterization of the rose (Rosa chinensis) WRKY family and role of RcWRKY41 in gray mold resistance. BMC PLANT BIOLOGY 2019; 19:522. [PMID: 31775626 PMCID: PMC6882016 DOI: 10.1186/s12870-019-2139-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 11/14/2019] [Indexed: 05/10/2023]
Abstract
BACKGROUND The WRKYs are a major family of plant transcription factors that play roles in the responses to biotic and abiotic stresses; however, a comprehensive study of the WRKY family in roses (Rosa sp.) has not previously been performed. RESULTS In the present study, we performed a genome-wide analysis of the WRKY genes in the rose (Rosa chinensis), including their phylogenetic relationships, gene structure, chromosomal locations, and collinearity. Using a phylogenetic analysis, we divided the 56 RcWRKY genes into three subgroups. The RcWRKYs were unevenly distributed across all seven rose chromosomes, and a study of their collinearity suggested that genome duplication may have played a major role in RcWRKY gene duplication. A Ka/Ks analysis indicated that they mainly underwent purifying selection. Botrytis cinerea infection induced the expression of 19 RcWRKYs, most of which had undergone gene duplication during evolution. These RcWRKYs may regulate rose resistance against B. cinerea. Based on our phylogenetic and expression analyses, RcWRKY41 was identified as a candidate regulatory gene in the response to B. cinerea infection, which was confirmed using virus-induced gene silencing. CONCLUSIONS This study provides useful information to facilitate the further study of the function of the rose WRKY gene family.
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Affiliation(s)
- Xintong Liu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Dandan Li
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Shiya Zhang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Yaling Xu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Zhao Zhang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China.
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Liu G, Zeng H, Li X, Wei Y, Shi H. Functional Analysis of MaWRKY24 in Transcriptional Activation of Autophagy-Related Gene 8f/g and Plant Disease Susceptibility to Soil-Borne Fusarium oxysporum f. sp. cubense. Pathogens 2019; 8:pathogens8040264. [PMID: 31775365 PMCID: PMC6963284 DOI: 10.3390/pathogens8040264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/16/2019] [Accepted: 11/20/2019] [Indexed: 11/16/2022] Open
Abstract
WRKYs play important roles in plant development and stress responses. Although MaWRKYs have been comprehensively identified in the banana (Musa acuminata), their in vivo roles and direct targets remain elusive. In this study, a transcript profile analysis indicated the common regulation of MaWRKYs transcripts in response to fungal pathogen Fusarium oxysporum f. sp. cubense (Foc). Among these MaWRKYs, MaWRKY24 was chosen for further analysis due to its higher expression in response to Foc. The specific nucleus subcellular location and transcription activated activity on W-box indicated that MaWRKY24 was a transcription factor. The correlation analysis of gene expression indicated that MaWRKYs were closely related to autophagy-associated genes (MaATG8s). Further analysis showed that MaWRKY24 directly regulated the transcriptional level of MaATG8f/g through binding to W-box in their promoters, as evidenced by quantitative real-time Polymerase Chain Reaction (PCR), dual luciferase assay, and electrophoretic mobility shift assay. In addition, overexpression of MaWRKY24 and MaATG8f/g resulted in disease susceptibility to Foc, which might be related to the activation of autophagic activity. This study highlights the positive regulation of MaWRKY24 in transcriptional activation of autophagy-related gene 8f/g in the banana and their common roles in disease susceptibility to soil-borne Foc, indicating the effects of MaWRKY24 on autophagy and disease susceptibility.
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Affiliation(s)
| | | | | | | | - Haitao Shi
- Correspondence: ; Tel.: +86-898-66160721
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Transcription Factor GarWRKY5 Is Involved in Salt Stress Response in Diploid Cotton Species ( Gossypium aridum L.). Int J Mol Sci 2019; 20:ijms20215244. [PMID: 31652670 PMCID: PMC6862181 DOI: 10.3390/ijms20215244] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/15/2019] [Accepted: 10/20/2019] [Indexed: 12/12/2022] Open
Abstract
Cotton is one of the most economically important crops in the world, and it is exposed to various abiotic stresses during its lifecycle, especially salt stress. However, the molecular mechanisms underlying cotton tolerance to salt stress are still not fully understood due to the complex nature of salt response. Therefore, identification of salt stress tolerance-related functional genes will help us understand key components involved in stress response and provide valuable genes for improving salt stress tolerance via genetic engineering in cotton. In the present study, virus-induced gene silencing of GhWRKY5 in cotton showed enhanced salt sensitivity compared to wild-type plants under salt stress. Overexpression of GarWRKY5 in Arabidopsis positively regulated salt tolerance at the stages of seed germination and vegetative growth. Additionally, GarWRKY5-overexpressing plants exhibited higher activities of superoxide dismutase (SOD) and peroxidase (POD) under salt stress. The transcriptome sequencing analysis of transgenic Arabidopsis plants and wild-type plants revealed that there was enriched coexpression of genes involved in reactive oxygen species (ROS) scavenging (including glutamine S-transferases (GSTs) and SODs) and altered response to jasmonic acid and salicylic acid in the GarWRKY5-OE lines. GarWRKY5 is involved in salt stress response by the jasmonic acid- or salicylic acid-mediated signaling pathway based on overexpression of GarWRKY5 in Arabidopsis and virus-induced gene silencing of GarWRKY5 in cotton.
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Wu GQ, Li ZQ, Cao H, Wang JL. Genome-wide identification and expression analysis of the WRKY genes in sugar beet ( Beta vulgaris L.) under alkaline stress. PeerJ 2019; 7:e7817. [PMID: 31632850 PMCID: PMC6796966 DOI: 10.7717/peerj.7817] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/03/2019] [Indexed: 12/15/2022] Open
Abstract
Background The WRKY transcription factor family plays crucial roles in many aspects of physiological processes and adaption to environment. Although the WRKY genes have been widely identified in various plant species, the structure and function of the WRKY family in sugar beet (Beta vulgaris L.) remains unknown. Methods In the present study, the WRKY genes were identified from the sugar beet genome by bioinformatics. A phylogenetic tree was constructed by MEGA7.0. A distribution map of these genes was displayed by MapInspect 1.0. Furthermore, the exon-intron structure and the conserved motifs were predicted by GSDS 2.0 and MEME 5.0.5, respectively. Additionally, the expression levels of nine selected genes in shoots and roots of sugar beet seedlings exposed to alkaline stress were assayed by qRT-PCR. Results A total of 58 putative BvWRKY genes are identified in the sugar beet genome. The coding sequences of these genes ranged from 558 to 2,307 bp and molecular weights (MWs) varied from 21.3 to 84. The BvWRKY genes are clustered into three major groups I, II, and III, with 11, 40, and seven members, based on the primary amino acid sequences. The number of introns in the BvWRKY genes ranged from 1 to 5, with a majority of BvWRKY (27/58) containing three exons. All the BvWRKY genes have one or two conserved WRKY domains and zinc-finger structure. Moreover, the selected BvWRKY genes showed a variety of expression patterns in shoots and roots of seedlings under various concentrations of NaHCO3. Importantly, BvWRKY10 in shoots and BvWRKY16 in roots were remarkably up-regulated by alkaline stress. Taken together, our findings extend understandings of the BvWRKY genes family and provide useful information for subsequent research on their functions in sugar beet under alkaline stress.
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Affiliation(s)
- Guo-Qiang Wu
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
| | - Zhi-Qiang Li
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
| | - Han Cao
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
| | - Jin-Long Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
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Transcription Factor OpWRKY3 Is Involved in the Development and Biosynthesis of Camptothecin and Its Precursors in Ophiorrhiza pumila Hairy Roots. Int J Mol Sci 2019; 20:ijms20163996. [PMID: 31426351 PMCID: PMC6719216 DOI: 10.3390/ijms20163996] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/25/2019] [Accepted: 08/13/2019] [Indexed: 12/13/2022] Open
Abstract
The plant Ophiorrhiza pumila produces camptothecin (CPT), a kind of terpene indole alkaloid (TIAs) that has been widely used in treatment of cancer. Tryptophan-arginine-lysine-tyrosine (WRKY) transcription factors have been reported to play important roles in plant metabolism and development. In this study, a novel WRKY transcription factor named OpWRKY3 was isolated from O. pumila, with full-length open reading frame (ORF) of 1128 bp, encoding 375 amino acids. Phylogenetic tree analysis revealed that OpWRKY3 shared the highest homology with VvWRKY30, and it is a significant feature belonging to group III. OpWRKY3 was responsive to various treatments, including gibberellin (GA3), methyl jasmonate (MJ), acetylsalicylic acid (ASA), salicylic acid (SA), and abscisic acid (ABA). Besides, OpWRKY3 is expressed predominantly in stems. Subcellular localization analysis showed that OpWRKY3 localized in the nucleus. The biomass of OpWRKY3-SRDX transgenic hairy roots (S line) was visibly suppressed, while there were slight changes between overexpression of the OpWRKY3 line (OE line) and the control. In addition, the concentration and total production of camptothecin precursors including loganin and secologanin were significantly changed in both OE and S lines while total production of CPT was significantly changed in most transgenic lines. Thus, the present work revealed that OpWRKY3 may act as a regulator in the growth and development of O. pumila, and in production of camptothecin and its precursors.
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Guo Y, Ping W, Chen J, Zhu L, Zhao Y, Guo J, Huang Y. Meta-analysis of the effects of overexpression of WRKY transcription factors on plant responses to drought stress. BMC Genet 2019; 20:63. [PMID: 31349781 PMCID: PMC6660937 DOI: 10.1186/s12863-019-0766-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 07/17/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The tryptophan-arginine-lysine-tyrosine (WRKY) transcription factors play important roles in plants, allowing them to adapt to environmental conditions that are not normally conducive to plant growth; in particular, drought. There has been extensive research on WRKY transcription factors and the effects of their overexpression in plants on resistance to drought stress. However, due to the materials (the type and species of donor and receptor, promoters) and treatments (the type and time of stress) used, different and often confounding results have been obtained between studies. Meta-analysis is a powerful statistical tool that can be used to summarize results from numerous independent experiments on the same research topic while accounting for variability across experiments. RESULTS We carried out a meta-analysis of 16 measured parameters that affect drought resistance in plants overexpressing WRKY transcription factors and wild-type plants. We found that only one of these parameters was significantly different between transgenic and wild-type plants under drought and control conditions at a 95% confidence interval (p = 0.000, p = 0.009, respectively). Eleven of the sixteen parameters were obviously different in WRKY transgenic plants under drought and control conditions (SV, p = 0.023, SSC, p = 0.000, SOD, p = 0.012, SFW, p = 0.000, RL, p = 0.016, Pro, p = 0.000, POD, p = 0.027, MDA, p = 0.000, H2O2, p = 0.003, EL, p = 0.000, CHC, p = 0.000, respectively), seven of the eleven obviously different parameters showed positive effect (SSC, SOD, Pro, POD, MDA, H2O2, EL), four of them revealed negative effect (SV, SFW, RL, CHC). CONCLUSION We have found that only one of these parameters was significantly different between transgenic and wild-type plants under drought and control conditions respectively, at a 95% confidence interval. And eleven of sixteen parameters showed obviously different of WRKY-overexpressed plants under different conditions (water-stressed and normal), suggesting that WRKY transcription factors play an important role in plant responses to drought stress. These findings also provide a theoretical basis for further study of the role of WRKY transcription factors in the regulation of plant responses to environmental stress.
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Affiliation(s)
- Yuan Guo
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Wenjing Ping
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Jingtang Chen
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Liying Zhu
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Yongfeng Zhao
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Jinjie Guo
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
| | - Yaqun Huang
- Hebei Branch of Chinese National Maize Improvement Center, Hebei Agricultural University, Baoding, People’s Republic of China
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Szczepaniec A, Finke D. Plant-Vector-Pathogen Interactions in the Context of Drought Stress. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00262] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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