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Jeong S, Lim CW, Lee SC. The Pepper MAP Kinase CaAIMK1 Positively Regulates ABA and Drought Stress Responses. FRONTIERS IN PLANT SCIENCE 2020; 11:720. [PMID: 32528517 PMCID: PMC7264397 DOI: 10.3389/fpls.2020.00720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/06/2020] [Indexed: 05/08/2023]
Abstract
Protein phosphorylation and dephosphorylation are important mechanisms that regulate many cellular processes. Protein kinases usually function in the regulation of the stress responses by adjusting activity via phosphorylation of target proteins. Here, we isolated CaAIMK1 (Capsicum annuum ABA Induced MAP Kinase 1) from the pepper leaves that had been subjected to drought stress. CaAIMK1 transcripts were induced by drought, abscisic acid (ABA), high salinity, and H2O2; further, the CaAIMK1-Green fluorescent protein localized in the nucleus and cytoplasm. We performed genetic studies using CaAIMK1-silenced pepper plants and CaAIMK1-overexpressing (OX) Arabidopsis plants. CaAIMK1-silenced pepper plants showed a drought-sensitive phenotype characterized by altered ABA signaling, including low leaf temperatures, and large stomatal apertures. CaAIMK1-OX plants exhibited a contrasting drought-tolerant phenotype characterized by decreased levels of transpirational water loss and increased expression levels of Arabidopsis stress-related genes. In CaAIMK1 K32N-OX transgenic Arabidopsis plants, sensitivity to ABA and drought was restored. Collectively, these results demonstrate that CaAIMK1 positively regulates the drought stress responses via an ABA-dependent pathway.
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Fan K, Mao Z, Zheng J, Chen Y, Li Z, Lin W, Zhang Y, Huang J, Lin W. Molecular Evolution and Expansion of the KUP Family in the Allopolyploid Cotton Species Gossypium hirsutum and Gossypium barbadense. FRONTIERS IN PLANT SCIENCE 2020; 11:545042. [PMID: 33101325 PMCID: PMC7554350 DOI: 10.3389/fpls.2020.545042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 09/14/2020] [Indexed: 05/07/2023]
Abstract
The comprehensive analysis of gene family evolution will elucidate the origin and evolution of gene families. The K+ uptake (KUP) gene family plays important roles in K+ uptake and transport, plant growth and development, and abiotic stress responses. However, the current understanding of the KUP family in cotton is limited. In this study, 51 and 53 KUPs were identified in Gossypium barbadense and Gossypium hirsutum, respectively. These KUPs were divided into five KUP subfamilies, with subfamily 2 containing three groups. Different subfamilies had different member numbers, conserved motifs, gene structures, regulatory elements, and gene expansion and loss rates. A paleohexaploidization event caused the expansion of GhKUP and GbKUP in cotton, and duplication events in G. hirsutum and G. barbadense have happened in a common ancestor of Gossypium. Meanwhile, the KUP members of the two allopolyploid subgenomes of G. hirsutum and G. barbadense exhibited unequal gene proportions, gene structural diversity, uneven chromosomal distributions, asymmetric expansion rates, and biased gene loss rates. In addition, the KUP families of G. hirsutum and G. barbadense displayed evolutionary conservation and divergence. Taken together, these results illustrated the molecular evolution and expansion of the KUP family in allopolyploid cotton species.
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Affiliation(s)
- Kai Fan
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Zhijun Mao
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Jiaxin Zheng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Yunrui Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Zhaowei Li
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Weiwei Lin
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Yongqiang Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
| | - Jinwen Huang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
- *Correspondence: Jinwen Huang, ; Wenxiong Lin,
| | - Wenxiong Lin
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, China
- *Correspondence: Jinwen Huang, ; Wenxiong Lin,
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203
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Ju YL, Yue XF, Min Z, Wang XH, Fang YL, Zhang JX. VvNAC17, a novel stress-responsive grapevine (Vitis vinifera L.) NAC transcription factor, increases sensitivity to abscisic acid and enhances salinity, freezing, and drought tolerance in transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 146:98-111. [PMID: 31734522 DOI: 10.1016/j.plaphy.2019.11.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/24/2019] [Accepted: 11/02/2019] [Indexed: 05/07/2023]
Abstract
Drought stress is the primary factor limiting the growth and fruit quality of grapevines worldwide. However, the biological function of the NAC [No apical meristem (NAM), Arabidopsis transcription activation factor (ATAF), Cup-shaped cotyledon (CUC)] transcription factor (TF) in grapevine is not clear. In this study, we reported that VvNAC17, a novel NAC transcription factor, was expressed in various tissues following drought, high temperature (45 °C), freezing (4 °C), salicylic acid (SA), and abscisic acid (ABA) treatments in grapevine. The VvNAC17 protein was localized in the nucleus of Arabidopsis thaliana protoplasts and demonstrated transcriptional activation activities at its C-terminus in yeast. The VvNAC17 gene was overexpressed in Arabidopsis thaliana. Under mannitol and salt stress, the germination rates of the VvNAC17-overexpression lines were higher than those of the wild-type plants, as were the root lengths. The VvNAC17-overexpression lines showed greater tolerance to freezing stress along with a higher survival rate. Following ABA treatment, the seed germination rate and the root length of the VvNAC17-overexpression lines were inhibited, and the stomatal opening and stomatal density were reduced. When subjected to drought and dehydration stress, the VvNAC17-overexpression lines showed improved survival and reduced water loss rates in comparison to the wild-type plants. Under drought conditions, the VvNAC17-overexpression lines had lower malondialdehyde and H2O2 contents, but higher peroxidase, superoxide dismutase, and catalase activities as well as higher proline content. Moreover, the expression of marker genes, including ABI5, AREB1, COR15A, COR47, P5CS, RD22, and RD29A, was up-regulated in the VvNAC17-overexpression lines when subjected to ABA and drought treatments. The results suggest that in transgenic Arabidopsis over-expression of VvNAC17 enhances resistance to drought while up-regulating the expression of ABA- and stress-related genes.
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Affiliation(s)
- Yan-Lun Ju
- College of Enology, Northwest A & F University, Yangling, Shaanxi, 712100, China.
| | - Xiao-Feng Yue
- College of Enology, Northwest A & F University, Yangling, Shaanxi, 712100, China.
| | - Zhuo Min
- Department of Brewing Engineering, Moutai University, Renhuai, Guizhou, 564507, China.
| | - Xian-Hang Wang
- College of Enology, Northwest A & F University, Yangling, Shaanxi, 712100, China.
| | - Yu-Lin Fang
- College of Enology, Northwest A & F University, Yangling, Shaanxi, 712100, China.
| | - Jun-Xiang Zhang
- Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan, Ningxia, 750000, China.
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204
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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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205
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Zhao P, Hou S, Guo X, Jia J, Yang W, Liu Z, Chen S, Li X, Qi D, Liu G, Cheng L. A MYB-related transcription factor from sheepgrass, LcMYB2, promotes seed germination and root growth under drought stress. BMC PLANT BIOLOGY 2019; 19:564. [PMID: 31852429 PMCID: PMC6921572 DOI: 10.1186/s12870-019-2159-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/25/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Drought is one of the most serious factors limiting plant growth and production. Sheepgrass can adapt well to various adverse conditions, including drought. However, during germination, sheepgrass young seedlings are sensitive to these adverse conditions. Therefore, the adaptability of seedlings is very important for plant survival, especially in plants that inhabit grasslands or the construction of artificial grassland. RESULTS In this study, we found a sheepgrass MYB-related transcription factor, LcMYB2 that is up-regulated by drought stress and returns to a basal level after rewatering. The expression of LcMYB2 was mainly induced by osmotic stress and was localized to the nucleus. Furthermore, we demonstrate that LcMYB2 promoted seed germination and root growth under drought and ABA treatments. Additionally, we confirmed that LcMYB2 can regulate LcDREB2 expression in sheepgrass by binding to its promoter, and it activates the expression of the osmotic stress marker genes AtDREB2A, AtLEA14 and AtP5CS1 by directly binding to their promoters in transgenic Arabidopsis. CONCLUSIONS Based on these results, we propose that LcMYB2 improves plant drought stress tolerance by increasing the accumulation of osmoprotectants and promoting root growth. Therefore, LcMYB2 plays pivotal roles in plant responses to drought stress and is an important candidate for genetic manipulation to create drought-resistant crops, especially during seed germination.
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Affiliation(s)
- Pincang Zhao
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- College of Management Science And Engineering, Hebei University of Economics and Business, Shijiazhuang, China
| | - Shenglin Hou
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- Institute of Millet Crops, Hebei Academy of Agricultural & Forestry Sciences, Shijiazhuang, China
| | - Xiufang Guo
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Junting Jia
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Weiguang Yang
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Zhujiang Liu
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Shuangyan Chen
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Xiaoxia Li
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Dongmei Qi
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Gongshe Liu
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Liqin Cheng
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
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206
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Kumar M, Kesawat MS, Ali A, Lee SC, Gill SS, Kim HU. Integration of Abscisic Acid Signaling with Other Signaling Pathways in Plant Stress Responses and Development. PLANTS (BASEL, SWITZERLAND) 2019; 8:E592. [PMID: 31835863 PMCID: PMC6963649 DOI: 10.3390/plants8120592] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 11/26/2019] [Accepted: 12/10/2019] [Indexed: 12/30/2022]
Abstract
Plants are immobile and, to overcome harsh environmental conditions such as drought, salt, and cold, they have evolved complex signaling pathways. Abscisic acid (ABA), an isoprenoid phytohormone, is a critical signaling mediator that regulates diverse biological processes in various organisms. Significant progress has been made in the determination and characterization of key ABA-mediated molecular factors involved in different stress responses, including stomatal closure and developmental processes, such as seed germination and bud dormancy. Since ABA signaling is a complex signaling network that integrates with other signaling pathways, the dissection of its intricate regulatory network is necessary to understand the function of essential regulatory genes involved in ABA signaling. In the present review, we focus on two aspects of ABA signaling. First, we examine the perception of the stress signal (abiotic and biotic) and the response network of ABA signaling components that transduce the signal to the downstream pathway to respond to stress tolerance, regulation of stomata, and ABA signaling component ubiquitination. Second, ABA signaling in plant development processes, such as lateral root growth regulation, seed germination, and flowering time regulation is investigated. Examining such diverse signal integration dynamics could enhance our understanding of the underlying genetic, biochemical, and molecular mechanisms of ABA signaling networks in plants.
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Affiliation(s)
- Manu Kumar
- Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul 05006, Korea
| | | | - Asjad Ali
- Southern Cross Plant Science, Southern Cross University, East Lismore NSW 2480, Australia;
| | | | - Sarvajeet Singh Gill
- Stress Physiology and Molecular Biology Lab, Centre for Biotechnology, MD University, Rohtak 124001, India;
| | - Hyun Uk Kim
- Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul 05006, Korea
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207
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Lin J, Dang F, Chen Y, Guan D, He S. CaWRKY27 negatively regulates salt and osmotic stress responses in pepper. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 145:43-51. [PMID: 31665666 DOI: 10.1016/j.plaphy.2019.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 07/29/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
WRKY transcription factors are key regulatory components of plant responses to both biotic and abiotic stresses. In pepper (Capsicum annuum), CaWRKY27 positively regulates resistance to the pathogenic bacterium Ralstonia solanacearum and negatively regulates thermotolerance. Here, we report that CaWRKY27 functions in the response to salinity and osmotic stress. CaWRKY27 transcription was induced by salinity, osmotic, and abscisic acid (ABA) treatments, as determined using qPCR and GUS assays. Transgenic Arabidopsis thaliana and tobacco (Nicotiana tabacum) plants heterologously expressing CaWRKY27 had an increased sensitivity to salinity and osmotic stress, with a higher inhibition of both root elongation and whole plant growth, more severe chlorosis and wilting, lower germination rates, and an enhanced germination sensitivity to ABA than the corresponding wild-type plants. Furthermore, most marker genes associated with reactive oxygen species (ROS) detoxification and polyamine and ABA biosynthesis, as well as stress-responsive genes NtDREB3, were downregulated in plants transgenically expressing CaWRKY27 upon exposure to salinity or osmotic stress. Consistently, silencing of CaWRKY27 using virus-induced gene silencing conferred tolerance to salinity and osmotic stress in pepper plants. These findings suggest that CaWRKY27 acts as a molecular link in the antagonistic crosstalk regulating the expression of defense-related genes in the responses to both abiotic and biotic stresses by acting either as a transcriptional activator or repressor in pepper.
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Affiliation(s)
- Jinhui Lin
- Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization of the Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Fengfeng Dang
- Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization of the Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Yongping Chen
- College of Horticulture Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Deyi Guan
- Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization of the Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Shuilin He
- Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization of the Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
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208
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Genome-wide characterization of the AP2/ERF gene family in radish (Raphanus sativus L.): Unveiling evolution and patterns in response to abiotic stresses. Gene 2019; 718:144048. [DOI: 10.1016/j.gene.2019.144048] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 12/16/2022]
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209
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Dong W, Liu X, Lv J, Gao T, Song Y. The expression of alfalfa MsPP2CA1 gene confers ABA sensitivity and abiotic stress tolerance on Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 143:176-182. [PMID: 31513951 DOI: 10.1016/j.plaphy.2019.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Although clade A phosphatase 2Cs (PP2CAs) are well known to regulate abscisic acid (ABA) signaling, few members of this family have been identified in alfalfa so far. Here, the isolation and characterization of the gene MsPP2CA1 from alfalfa is described. Its transcription was found to be highly inducible by treatment with abscisic acid, salt, hydrogen peroxide and polyethylene glycol. The constitutive expression of MsPP2CA1 in Arabidopsis thaliana seedlings mitigates root growth imposed by either salinity or oxidative stress, while also raising the level of sensitivity to ABA during germination and early seedling development, and promoting stomatal closure. In transgenic plants, many ABA-dependent stress-responsive genes were activated, and the expressions of catalase and peroxidase which involved in reactive oxygen scavenging were promoted. MsPP2CA1 is suggested as a candidate for the genetic manipulation of salinity tolerance in legume species.
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Affiliation(s)
- Wei Dong
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Xijiang Liu
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jiao Lv
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Tianxue Gao
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Yuguang Song
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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210
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Huang Y, Jiao Y, Xie N, Guo Y, Zhang F, Xiang Z, Wang R, Wang F, Gao Q, Tian L, Li D, Chen L, Liang M. OsNCED5, a 9-cis-epoxycarotenoid dioxygenase gene, regulates salt and water stress tolerance and leaf senescence in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110188. [PMID: 31481229 DOI: 10.1016/j.plantsci.2019.110188] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/07/2019] [Accepted: 07/10/2019] [Indexed: 05/08/2023]
Abstract
9-cis-epoxycarotenoid dioxygenase (NCED) is a rate-limiting enzyme for abscisic acid (ABA) biosynthesis. However, the molecular mechanisms of NCED5 that modulate plant development and abiotic stress tolerance are still unclear, particular in rice. Here, we demonstrate that a rice NCED gene, OsNCED5, was expressed in all tissues we tested, and was induced by exposure to salt stress, water stress, and darkness. Mutational analysis showed that nced5 mutants reduced ABA level and decreased tolerance to salt and water stress and delayed leaf senescence. However, OsNCED5 overexpression increased ABA level, enhanced tolerance to the stresses, and accelerated leaf senescence. Transcript analysis showed that OsNCED5 regulated ABA-dependent abiotic stress and senescence-related gene expression. Additionally, ectopic expression of OsNCED5 tested in Arabidopsis thaliana altered plant size and leaf morphology and delayed seed germination and flowering time. Thus, OsNCED5 may regulate plant development and stress resistance through control of ABA biosynthesis. These findings contribute to our understanding of the molecular mechanisms by which NCED regulates plant development and responses to abiotic stress in different crop species.
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Affiliation(s)
- Yuan Huang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Yang Jiao
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Ningkun Xie
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Yiming Guo
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Feng Zhang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Zhipan Xiang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Rong Wang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Feng Wang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Qinmei Gao
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Lianfu Tian
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Dongping Li
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China
| | - Liangbi Chen
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China.
| | - Manzhong Liang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Hunan Normal University, Changsha, 410081, PR China.
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Nguyen QTC, Lee SJ, Choi SW, Na YJ, Song MR, Hoang QTN, Sim SY, Kim MS, Kim JI, Soh MS, Kim SY. Arabidopsis Raf-Like Kinase Raf10 Is a Regulatory Component of Core ABA Signaling. Mol Cells 2019; 42:646-660. [PMID: 31480825 PMCID: PMC6776158 DOI: 10.14348/molcells.2019.0173] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 08/09/2019] [Indexed: 11/27/2022] Open
Abstract
Abscisic acid (ABA) is a phytohormone essential for seed development and seedling growth under unfavorable environmental conditions. The signaling pathway leading to ABA response has been established, but relatively little is known about the functional regulation of the constituent signaling components. Here, we present several lines of evidence that Arabidopsis Raf-like kinase Raf10 modulates the core ABA signaling downstream of signal perception step. In particular, Raf10 phosphorylates subclass III SnRK2s (SnRK2.2, SnRK2.3, and SnRK2.6), which are key positive regulators, and our study focused on SnRK2.3 indicates that Raf10 enhances its kinase activity and may facilitate its release from negative regulators. Raf10 also phosphorylates transcription factors (ABI5, ABF2, and ABI3) critical for ABAregulted gene expression. Furthermore, Raf10 was found to be essential for the in vivo functions of SnRK2s and ABI5. Collectively, our data demonstrate that Raf10 is a novel regulatory component of core ABA signaling.
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Affiliation(s)
- Quy Thi Cam Nguyen
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Sun-ji Lee
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Seo-wha Choi
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Yeon-ju Na
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Mi-ran Song
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Quyen Thi Ngoc Hoang
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Seo Young Sim
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988,
Korea
| | - Min-Sik Kim
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988,
Korea
| | - Jeong-Il Kim
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Moon-Soo Soh
- Department of Molecular Biology, Sejong University, Seoul 05006,
Korea
| | - Soo Young Kim
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
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212
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Involvement of abscisic acid-responsive element-binding factors in cassava (Manihot esculenta) dehydration stress response. Sci Rep 2019; 9:12661. [PMID: 31477771 PMCID: PMC6718394 DOI: 10.1038/s41598-019-49083-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 08/19/2019] [Indexed: 02/04/2023] Open
Abstract
Cassava (Manihot esculenta) is a major staple food, animal feed and energy crop in the tropics and subtropics. It is one of the most drought-tolerant crops, however, the mechanisms of cassava drought tolerance remain unclear. Abscisic acid (ABA)-responsive element (ABRE)-binding factors (ABFs) are transcription factors that regulate expression of target genes involved in plant tolerance to drought, high salinity, and osmotic stress by binding ABRE cis-elements in the promoter regions of these genes. However, there is little information about ABF genes in cassava. A comprehensive analysis of Manihot esculenta ABFs (MeABFs) described the phylogeny, genome location, cis-acting elements, expression profiles, and regulatory relationship between these factors and Manihot esculenta betaine aldehyde dehydrogenase genes (MeBADHs). Here we conducted genome-wide searches and subsequent molecular cloning to identify seven MeABFs that are distributed unevenly across six chromosomes in cassava. These MeABFs can be clustered into three groups according to their phylogenetic relationships to their Arabidopsis (Arabidopsis thaliana) counterparts. Analysis of the 5′-upstream region of MeABFs revealed putative cis-acting elements related to hormone signaling, stress, light, and circadian clock. MeABF expression profiles displayed clear differences among leaf, stem, root, and tuberous root tissues under non-stress and drought, osmotic, or salt stress conditions. Drought stress in cassava leaves and roots, osmotic stress in tuberous roots, and salt stress in stems induced expression of the highest number of MeABFs showing significantly elevated expression. The glycine betaine (GB) content of cassava leaves also was elevated after drought, osmotic, or salt stress treatments. BADH1 is involved in GB synthesis. We show that MeBADH1 promoter sequences contained ABREs and that MeBADH1 expression correlated with MeABF expression profiles in cassava leaves after the three stress treatments. Taken together, these results suggest that in response to various dehydration stresses, MeABFs in cassava may activate transcriptional expression of MeBADH1 by binding the MeBADH1 promoter that in turn promotes GB biosynthesis and accumulation via an increase in MeBADH1 gene expression levels and MeBADH1 enzymatic activity. These responses protect cells against dehydration stresses by preserving an osmotic balance that enhances cassava tolerance to dehydration stresses.
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213
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Ding P, Fang L, Wang G, Li X, Huang S, Gao Y, Zhu J, Xiao L, Tong J, Chen F, Xia G. Wheat methionine sulfoxide reductase A4.1 interacts with heme oxygenase 1 to enhance seedling tolerance to salinity or drought stress. PLANT MOLECULAR BIOLOGY 2019; 101:203-220. [PMID: 31297725 DOI: 10.1007/s11103-019-00901-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
Here, a functional characterization of a wheat MSR has been presented: this protein makes a contribution to the plant's tolerance of abiotic stress, acting through its catalytic capacity and its modulation of ROS and ABA pathways. The molecular mechanism and function of certain members of the methionine sulfoxide reductase (MSR) gene family have been defined, however, these analyses have not included the wheat equivalents. The wheat MSR gene TaMSRA4.1 is inducible by salinity and drought stress and in this study, we demonstrate that its activity is restricted to the Met-S-SO enantiomer, and its subcellular localization is in the chloroplast. Furthermore, constitutive expression of TaMSRA4.1 enhanced the salinity and drought tolerance of wheat and Arabidopsis thaliana. In these plants constitutively expressing TaMSRA4.1, the accumulation of reactive oxygen species (ROS) was found to be influenced through the modulation of genes encoding proteins involved in ROS signaling, generation and scavenging, while the level of endogenous abscisic acid (ABA), and the sensitivity of stomatal guard cells to exogenous ABA, was increased. A yeast two-hybrid screen, bimolecular fluorescence complementation and co-immunoprecipitation assays demonstrated that heme oxygenase 1 (HO1) interacted with TaMSRA4.1, and that this interaction depended on a TaHO1 C-terminal domain. In plants subjected to salinity or drought stress, TaMSRA4.1 reversed the oxidation of TaHO1, activating ROS and ABA signaling pathways, but not in the absence of HO1. The aforementioned properties advocate TaMSRA4.1 as a candidate for plant genetic enhancement.
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Affiliation(s)
- Pengcheng Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Linlin Fang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Guangling Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Xiang Li
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Shu Huang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Yankun Gao
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Jiantang Zhu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones, Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, 410128, China
| | - Jianhua Tong
- Hunan Provincial Key Laboratory of Phytohormones, Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, 410128, China
| | - Fanguo Chen
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China.
| | - Guangmin Xia
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
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214
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Wan Zakaria WNA, Aizat WM, Goh HH, Mohd Noor N. Protein replenishment in pitcher fluids of Nepenthes × ventrata revealed by quantitative proteomics (SWATH-MS) informed by transcriptomics. JOURNAL OF PLANT RESEARCH 2019; 132:681-694. [PMID: 31422552 DOI: 10.1007/s10265-019-01130-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/07/2019] [Indexed: 05/19/2023]
Abstract
Carnivorous plants capture and digest insects for nutrients, allowing them to survive in soil deprived of nitrogenous nutrients. Plants from the genus Nepenthes produce unique pitchers containing secretory glands, which secrete enzymes into the digestive fluid. We performed RNA-seq analysis on the pitcher tissues and liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis on the pitcher fluids of Nepenthes × ventrata to study protein expression in this carnivory organ during early days of pitcher opening. This transcriptome provides a sequence database for pitcher fluid protein identification. A total of 32 proteins of diverse functions were successfully identified in which 19 proteins can be quantified based on label-free quantitative proteomics (SWATH-MS) analysis while 16 proteins were not reported previously. Our findings show that certain proteins in the pitcher fluid were continuously secreted or replenished after pitcher opening, even without any prey or chitin induction. We also discovered a new aspartic proteinase, Nep6, secreted into pitcher fluid. This is the first SWATH-MS analysis of protein expression in Nepenthes pitcher fluid using a species-specific reference transcriptome. Taken together, our study using a gel-free shotgun proteomics informed by transcriptomics (PIT) approach showed the dynamics of endogenous protein secretion in the digestive organ of N. × ventrata and provides insights on protein regulation during early pitcher opening prior to prey capture.
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Affiliation(s)
- Wan Nor Adibah Wan Zakaria
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor Darul Ehsan, Malaysia
| | - Wan Mohd Aizat
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor Darul Ehsan, Malaysia
| | - Hoe-Han Goh
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor Darul Ehsan, Malaysia.
| | - Normah Mohd Noor
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor Darul Ehsan, Malaysia
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215
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Liu Y, Yang T, Lin Z, Gu B, Xing C, Zhao L, Dong H, Gao J, Xie Z, Zhang S, Huang X. A WRKY transcription factor PbrWRKY53 from Pyrus betulaefolia is involved in drought tolerance and AsA accumulation. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1770-1787. [PMID: 30801865 PMCID: PMC6686137 DOI: 10.1111/pbi.13099] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 02/07/2019] [Accepted: 02/16/2019] [Indexed: 05/03/2023]
Abstract
WRKY comprises a large family of transcription factors in plants, but most WRKY members are still poorly understood. In this study, we report the identification and functional characterization of PbrWRKY53 isolated from Pyrus betulaefolia. PbrWRKY53 was greatly up-regulated by drought and abscisic acid, but slightly induced by salt and cold. Subcellar localization analyses showed that PbrWRKY53 was located in the nucleus. Ectopic expression of PbrWRKY53 in tobacco and Pyrus ussuriensis conferred enhanced tolerance to drought stress. The transgenic plants exhibited better water status, less reactive oxygen species generation and higher levels of antioxidant enzyme activities and metabolites than the wild type. In addition, overexpression of PbrWRKY53 in transgenic tobacco resulted in enhanced expression level of PbrNCED1, and led to the increase in larger amount of vitamin C accumulation in comparison to WT. Knock-down of PbrWRKY53 in P. ussuriensis down-regulated PbrNCED1 abundance, accompanied by compromised drought tolerance. Yeast one-hybrid assay, EMSA and transient expression analysis demonstrated that PbrWRKY53 could bind to the W-box element in the promoter region of PbrNCED1. Taken together, these results demonstrated that PbrWRKY53 plays a positive role in drought tolerance, which might be, at least in part, promoting production of vitamin C via regulating PbrNCED1 expression.
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Affiliation(s)
- Yue Liu
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Tianyuan Yang
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
- State Key Laboratory of Tea Plant Biology and UtilizationAnhui Agricultural UniversityHefeiChina
| | - Zekun Lin
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Bingjie Gu
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Caihua Xing
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Liangyi Zhao
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Huizhen Dong
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Junzhi Gao
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Zhihua Xie
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Shaoling Zhang
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
| | - Xiaosan Huang
- College of HorticultureState Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
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216
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Wang G, Xu X, Wang H, Liu Q, Yang X, Liao L, Cai G. A tomato transcription factor, SlDREB3 enhances the tolerance to chilling in transgenic tomato. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 142:254-262. [PMID: 31326718 DOI: 10.1016/j.plaphy.2019.07.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/09/2019] [Accepted: 07/16/2019] [Indexed: 05/23/2023]
Abstract
The dehydration response factor (DREB) transcription factor (TF) family can function in response to multiple cues around environment in plants. Nevertheless, the functions of dehydration response factor (DREB protein) in plant cold tolerance, especially in tomatoes (Solanum lycopersicum), have been rarely studied. In this study, the functions of tomato DREB TF (SlDREB3) in cold resistance were studied using transgenic tomatoes. The level of transcripts revealed that SlDREB3 was triggered by H2O2 and 4 °C treatments, indicating that SlDREB3 participates in response to cold stress in plants. SlDREB3-overexpressing plants exhibited high fresh mass, chlorophyll content, Fv/Fm, and O2-evolving activity; low membrane damage; and reactive oxygen species accumulation under chilling stress. Furthermore, the high expression levels of late embryogenesis-abundant genes SlLEA9 and SlLEA26 were detected in transgenic plants in response to cold stress. These findings revealed that SlDREB3 overexpression improved the tolerance to cold stress in transgenic plants possibly by upregulating SlLEAs expression.
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Affiliation(s)
- Guodong Wang
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China.
| | - Xinping Xu
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China
| | - Hao Wang
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China
| | - Qi Liu
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China
| | - Xiaotong Yang
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China
| | - Lixiang Liao
- College of Biological Science, Jining Medical University, Ri'zhao, Shandong, 276800, PR China
| | - Guohua Cai
- College of Life Science, Nanjing University, Nan'jing, Jiangshu, 210046, PR China.
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217
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Abdellaoui N, Kim MJ, Choi TJ. Transcriptome analysis of gene expression in Chlorella vulgaris under salt stress. World J Microbiol Biotechnol 2019; 35:141. [PMID: 31463611 DOI: 10.1007/s11274-019-2718-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 08/22/2019] [Indexed: 12/24/2022]
Abstract
Chlorella vulgaris is an important freshwater alga that is widely used as a food source for humans and animals. High-salinity environments can cause accumulation of lipids and proteins in this species, but the mechanism of this accumulation and the salt response remain unclear. In this work, transcriptome analysis was performed for the C. vulgaris response to salt stress (1% and 3% NaCl) applied for different times (2 h and 4 h). In total, 5232 and 9196 were differentially expressed after 1% NaCl for 2 and 4 h, and 3968 and 9035 unigenes were differentially expressed after 3% NaCl for 2 and 4 h, respectively. The number of upregulated genes after 4 h of salinity stress was greater than the number of downregulated genes, suggesting that the alteration of gene expression may be related to a mechanism of adaptation to a high-salinity environment. Furthermore, gene ontology and KEGG pathway analyses revealed that numerous biological pathways are affected by salt stress. Among the upregulated pathways, the cytoplasmic calcium signaling pathway, which is involved in the regulation of homeostasis, was highly upregulated. Genes involved in the photosystem I light-harvesting pathway were downregulated under salt stress. These results provide foundational information on the effects of salt stress on C. vulgaris metabolism and its possible mechanism of surviving high concentrations of NaCl.
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Affiliation(s)
- Najib Abdellaoui
- Department of Microbiology, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 48513, South Korea
| | - Min Jeong Kim
- Department of Microbiology, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 48513, South Korea
| | - Tae Jin Choi
- Department of Microbiology, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 48513, South Korea.
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218
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Jin X, Lv Z, Gao J, Zhang R, Zheng T, Yin P, Li D, Peng L, Cao X, Qin Y, Persson S, Zheng B, Chen P. AtTrm5a catalyses 1-methylguanosine and 1-methylinosine formation on tRNAs and is important for vegetative and reproductive growth in Arabidopsis thaliana. Nucleic Acids Res 2019; 47:883-898. [PMID: 30508117 PMCID: PMC6344853 DOI: 10.1093/nar/gky1205] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 11/20/2018] [Indexed: 12/21/2022] Open
Abstract
Modified nucleosides on tRNA are critical for decoding processes and protein translation. tRNAs can be modified through 1-methylguanosine (m1G) on position 37; a function mediated by Trm5 homologs. We show that AtTRM5a (At3g56120) is a Trm5 ortholog in Arabidopsis thaliana. AtTrm5a is localized to the nucleus and its function for m1G and m1I methylation was confirmed by mutant analysis, yeast complementation, m1G nucleoside level on single tRNA, and tRNA in vitro methylation. Arabidopsis attrm5a mutants were dwarfed and had short filaments, which led to reduced seed setting. Proteomics data indicated differences in the abundance of proteins involved in photosynthesis, ribosome biogenesis, oxidative phosphorylation and calcium signalling. Levels of phytohormone auxin and jasmonate were reduced in attrm5a mutant, as well as expression levels of genes involved in flowering, shoot apex cell fate determination, and hormone synthesis and signalling. Taken together, loss-of-function of AtTrm5a impaired m1G and m1I methylation and led to aberrant protein translation, disturbed hormone homeostasis and developmental defects in Arabidopsis plants.
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Affiliation(s)
- Xiaohuan Jin
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
| | - Zhengyi Lv
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
| | - Junbao Gao
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
| | - Rui Zhang
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
| | - Ting Zheng
- College of Life Science, HuaZhong Agricultural University, Wuhan 430070, China.,National Key Laboratory of Crop Genetic Improvement, HuaZhong Agricultural University, Wuhan 430070, China
| | - Ping Yin
- College of Life Science, HuaZhong Agricultural University, Wuhan 430070, China.,National Key Laboratory of Crop Genetic Improvement, HuaZhong Agricultural University, Wuhan 430070, China
| | - Dongqin Li
- National Key Laboratory of Crop Genetic Improvement, HuaZhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
| | - Xintao Cao
- Institute of Biophysics, Chinese Academy of Sciences, China
| | - Yan Qin
- Institute of Biophysics, Chinese Academy of Sciences, China
| | - Staffan Persson
- School of Biosciences, University of Melbourne, Parkville 3010, VIC, Australia.,Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bo Zheng
- College of Horticulture and Forestry Sciences, HuaZhong Agricultural University, Wuhan 430070, China
| | - Peng Chen
- College of Plant Science and Technology, HuaZhong Agricultural University, Wuhan 430070, China.,Biomass and Bioenergy Research Centre, HuaZhong Agricultural University, Wuhan 430070, China
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219
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Identification of Maize CC-Type Glutaredoxins That Are Associated with Response to Drought Stress. Genes (Basel) 2019; 10:genes10080610. [PMID: 31409044 PMCID: PMC6722656 DOI: 10.3390/genes10080610] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/01/2019] [Accepted: 08/07/2019] [Indexed: 12/22/2022] Open
Abstract
Global maize cultivation is often adversely affected by drought stress. The CC-type glutaredoxin (GRX) genes form a plant-specific subfamily that regulate plant growth and respond to environmental stresses. However, how maize CC-type GRX (ZmGRXCC) genes respond to drought stress remains unclear. We performed a TBLASTN search to identify ZmGRXCCs in the maize genome and verified the identified sequences using the NCBI conservative domain database (CDD). We further established a phylogenetic tree using Mega7 and surveyed known cis-elements in the promoters of ZmGRXCCs using the PlantCARE database. We found twenty-one ZmGRXCCs in the maize genome by a genome-wide investigation and compared their phylogenetic relationships with rice, maize, and Arabidopsis. The analysis of their redox active sites showed that most of the 21 ZmGRXCCs share similar structures with their homologs. We assessed their expression at young seedlings and adult leaves under drought stress and their expression profiles in 15 tissues, and found that they were differentially expressed, indicating that different ZmGRXCC genes have different functions. Notably, ZmGRXCC14 is up-regulated at seedling, V12, V14, V16, and R1 stages. Importantly, significant associations between genetic variation in ZmGRXCC14 and drought tolerance are found at the seedling stage. These results will help to advance the study of the function of ZmGRXCCs genes under drought stress and understand the mechanism of drought resistance in maize.
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220
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Chang HC, Tsai MC, Wu SS, Chang IF. Regulation of ABI5 expression by ABF3 during salt stress responses in Arabidopsis thaliana. BOTANICAL STUDIES 2019; 60:16. [PMID: 31399930 PMCID: PMC6689043 DOI: 10.1186/s40529-019-0264-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 07/31/2019] [Indexed: 05/02/2023]
Abstract
Background Basic region/leucine zippers (bZIPs) are transcription factors (TFs) encoded by a large gene family in plants. ABF3 and ABI5 are Group A bZIP TFs that are known to be important in abscisic acid (ABA) signaling. However, questions of whether ABF3 regulates ABI5 are still present. Results In vitro kinase assay results showed that Thr-128, Ser-134, and Thr-451 of ABF3 are calcium-dependent protein kinase phosphorylation sites. Bimolecular fluorescence complementation (BiFC) analysis results showed a physical interaction between ABF3 and 14-3-3ω. A Thr-451 to Ala point mutation abolished the interaction but did not change the subcellular localization. In addition, the Arabidopsis protoplast transactivation assay using a luciferase reporter exhibited ABI5 activation by either ABF3 alone or by co-expression of ABF3 and 14-3-3ω. Moreover, chromatin immunoprecipitation-qPCR results showed that in Arabidopsis, ABI5 ABA-responsive element binding proteins (ABREs) of the promoter region (between − 1376 and − 455) were enriched by ABF3 binding under normal and 150 mM NaCl salt stress conditions. Conclusion Taken together, our results demonstrated that ABI5 expression is regulated by ABF3, which could contribute to salt stress tolerance in Arabidopsis thaliana. Electronic supplementary material The online version of this article (10.1186/s40529-019-0264-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hui-Chun Chang
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Min-Chieh Tsai
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Sih-Sian Wu
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Ing-Feng Chang
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
- Department of Life Science, National Taiwan University, Taipei, Taiwan
- Genome and Systems Biology Degree Program, National Taiwan University and Academia Sinica, Taipei, Taiwan
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221
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Yu D, Wildhagen H, Tylewicz S, Miskolczi PC, Bhalerao RP, Polle A. Abscisic acid signalling mediates biomass trade-off and allocation in poplar. THE NEW PHYTOLOGIST 2019; 223:1192-1203. [PMID: 31050802 DOI: 10.1111/nph.15878] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
Abscisic acid (ABA) is a well known stress hormone regulating drought adaptation of plants. Here, we hypothesised that genetic engineering of genes involved in ABA stress signalling and photoperiodic regulation affected drought resistance by trade-off with biomass production in perennial poplar trees. We grew Populus tremula × tremuloides wild-type (T89) and various transgenic lines (two transformation events of 35S::abi1-1, 35S::RCAR, RCAR:RNAi, 35S::ABI3, 35S::AREB3, 35S::FDL1, FDL1:RNAi, 35S::FDL2 and FDL2:RNAi) outdoors and exposed them to drought in the second growth period. After the winter, the surviving lines showed a huge variation in stomatal conductance, leaf size, whole-plant leaf area, tree height, stem diameter, and biomass. Whole-plant leaf area was a strong predictor for woody biomass production. The 35S::AREB3 lines were compromised in biomass production under well irrigated conditions compared with wild-type poplars but were resilient to drought. ABA signalling regulated FDL1 and FDL2 expression under stress. Poplar lines overexpressing FDL1 or FDL2 were drought-sensitive; they shed leaves and lost root biomass, whereas the FDL RNAi lines showed higher biomass allocation to roots under drought. These results assign a new function in drought acclimation to FDL genes aside from photoperiodic regulation. Our results imply a critical role for ABA-mediated processes in balancing biomass production and climate adaptation.
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Affiliation(s)
- Dade Yu
- Forest Botany and Tree Physiology, University of Goettingen, 37077, Göttingen, Germany
| | - Henning Wildhagen
- Forest Botany and Tree Physiology, University of Goettingen, 37077, Göttingen, Germany
| | - Szymon Tylewicz
- Forest Genetics and Plant Physiology, Umea Plant Science Centre, 90736, Umea, Sweden
| | - Pal C Miskolczi
- Forest Genetics and Plant Physiology, Umea Plant Science Centre, 90736, Umea, Sweden
| | - Rishikesh P Bhalerao
- Forest Genetics and Plant Physiology, Umea Plant Science Centre, 90736, Umea, Sweden
| | - Andrea Polle
- Forest Botany and Tree Physiology, University of Goettingen, 37077, Göttingen, Germany
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222
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Han G, Yuan F, Guo J, Zhang Y, Sui N, Wang B. AtSIZ1 improves salt tolerance by maintaining ionic homeostasis and osmotic balance in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 285:55-67. [PMID: 31203894 DOI: 10.1016/j.plantsci.2019.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 05/20/2023]
Abstract
C2H2-type zinc finger proteins play important roles in plant growth, development, and abiotic stress tolerance. Here, we explored the role of the C2H2-type zinc finger protein SALT INDUCED ZINC FINGER PROTEIN1 (AtSIZ1; At3G25910) in Arabidopsis thaliana under salt stress. AtSIZ1 expression was induced by salt treatment. During the germination stage, the germination rate, germination energy, germination index, cotyledon growth rate, and root length were significantly higher in AtSIZ1 overexpression lines than in the wild type under various stress treatments, whereas these indices were significantly reduced in AtSIZ1 loss-of-function mutants. At the mature seedling stage, the overexpression lines maintained higher levels of K+, proline, and soluble sugar, lower levels of Na+ and MDA, and lower Na+/K+ ratios than the wild type. Stress-related marker genes such as SOS1, AtP5CS1, AtGSTU5, COR15A, RD29A, and RD29B were expressed at higher levels in the overexpression lines than the wild type and loss-of-function mutants under salt treatment. These results indicate that AtSIZ1 improves salt tolerance in Arabidopsis by helping plants maintain ionic homeostasis and osmotic balance.
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Affiliation(s)
- Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Fang Yuan
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Yi Zhang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China.
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223
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Guan H, Liu X, Niu F, Zhao Q, Fan N, Cao D, Meng D, He W, Guo B, Wei Y, Fu Y. OoNAC72, a NAC-Type Oxytropis ochrocephala Transcription Factor, Conferring Enhanced Drought and Salt Stress Tolerance in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:890. [PMID: 31354764 PMCID: PMC6637385 DOI: 10.3389/fpls.2019.00890] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 06/21/2019] [Indexed: 05/23/2023]
Abstract
The NAC proteins form one of the largest families of plant-specific transcription factors (TFs) and play essential roles in developmental processes and stress responses. In this study, we characterized a NAC domain transcription factor, OoNAC72, from a legume Oxytropis ochrocephala. OoNAC72 was proved to be localized in the nuclei in tobacco lower epidermal cells and had transcriptional activation activity in yeast, confirming its transcription activity. OoNAC72 expression could be induced by drought, salinity and exogenous abscisic acid (ABA) in O. ochrocephala seedlings. Furthermore, over-expression of OoNAC72 driven by CaMV35S promoter in Arabidopsis resulted in ABA hypersensitivity and enhanced tolerance to drought and salt stresses during seed germination and post-germinative growth periods. In addition, over-expression of OoNAC72 enhanced the expression of stress-responsive genes such as RD29A, RD29B, RD26, LEA14, ANACOR19, ZAT10, PP2CA, and NCED3. These results highlight the important regulatory role of OoNAC72 in multiple abiotic stress tolerance, and may provide an underlying reason for the spread of O. ochrocephala.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yahui Wei
- Department of Life Science, Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Xi’an, China
| | - Yanping Fu
- Department of Life Science, Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Xi’an, China
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224
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Pérez-Díaz J, Pérez-Díaz JR, Medeiros DB, Zuther E, Hong CY, Nunes-Nesi A, Hincha DK, Ruiz-Lara S, Casaretto JA. Transcriptome analysis reveals potential roles of a barley ASR gene that confers stress tolerance in transgenic rice. JOURNAL OF PLANT PHYSIOLOGY 2019; 238:29-39. [PMID: 31129469 DOI: 10.1016/j.jplph.2019.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 05/29/2023]
Abstract
Control of gene expression and induction of cellular protection mechanisms are two important processes that plants employ to protect themselves against abiotic stresses. ABA-, stress, and ripening-induced (ASR) proteins have been identified to participate in such responses. Previous studies have proposed that these proteins can act as transcription factors and as molecular chaperones protecting transgenic plants against stresses; however a gene network regulated by ASRs has not been explored. To expand our knowledge on the function of these proteins in cereals, we present the functional characterization of a barley ASR gene. Expression of HvASR5 was almost ubiquitous in different organs and responded to ABA and to different stress treatments. When expressed ectopically, HvASR5 was able to confer drought and salt stress tolerance to Arabidopsis thaliana and to improve growth performance of rice plants under stress conditions. A transcriptomic analysis with two transgenic rice lines overexpressing HvASR5 helped to identify potential downstream targets and understand ASR-regulated cellular processes. HvASR5 up-regulated the expression of a distinct set of genes associated with stress responses, metabolic processes (particularly carbohydrate metabolism), as well as reproduction and development. These data, together with the confirmed nuclear and cytoplasmic localization of HvASR5, further support the hypothesis that HvASR5 can also carry out roles as molecular protector and transcriptional regulator.
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Affiliation(s)
- Jorge Pérez-Díaz
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | | | - David B Medeiros
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Ellen Zuther
- Max-Planck-Institute of Molecular Plant Physiology, 14476, Potsdam-Golm, Germany
| | - Chwan-Yang Hong
- Department of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Dirk K Hincha
- Max-Planck-Institute of Molecular Plant Physiology, 14476, Potsdam-Golm, Germany
| | - Simón Ruiz-Lara
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - José A Casaretto
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile; Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
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225
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Rigoulot SB, Petzold HE, Williams SP, Brunner AM, Beers EP. Populus trichocarpa clade A PP2C protein phosphatases: their stress-induced expression patterns, interactions in core abscisic acid signaling, and potential for regulation of growth and development. PLANT MOLECULAR BIOLOGY 2019; 100:303-317. [PMID: 30945147 DOI: 10.1007/s11103-019-00861-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/26/2019] [Indexed: 05/26/2023]
Abstract
Overexpression of the poplar PP2C protein phosphatase gene PtrHAB2 resulted in increased tree height and altered leaf morphology and phyllotaxy, implicating PP2C phosphatases as growth regulators functioning under favorable conditions. We identified and studied Populus trichocarpa genes, PtrHAB1 through PtrHAB15, belonging to the clade A PP2C family of protein phosphatases known to regulate abscisic acid (ABA) signaling. PtrHAB1 through PtrHAB3 and PtrHAB12 through PtrHAB15 were the most highly expressed genes under non-stress conditions. The poplar PP2C genes were differentially regulated by drought treatments. Expression of PtrHAB1 through PtrHAB3 was unchanged or downregulated in response to drought, while all other PtrHAB genes were weakly to strongly upregulated in response to drought stress treatments. Yeast two-hybrid assays involving seven ABA receptor proteins (PtrRCAR) against 12 PtrHAB proteins detected 51 interactions involving eight PP2Cs and all PtrRCAR proteins with 22 interactions requiring the addition of ABA. PtrHAB2, PtrHAB12, PtrHAB13 and PtrHAB14 also interacted with the sucrose non-fermenting related kinase 2 proteins PtrSnRK2.10 and PtrSnRK2.11, supporting conservation of a SnRK2 signaling cascade regulated by PP2C in poplar. Additionally, PtrHAB2, PtrHAB12, PtrHAB13 and PtrHAB14 interacted with the mitogen-activated protein kinase protein PtrMPK7. Due to its interactions with PtrSnRK2 and PtrMPK7 proteins, and its reduced expression during drought stress, PtrHAB2 was overexpressed in poplar to test its potential as a growth regulator under non-stress conditions. 35S::PtrHAB2 transgenics exhibited increased growth rate for a majority of transgenic events and alterations in leaf phyllotaxy and morphology. These results indicate that PP2Cs have additional roles which extend beyond canonical ABA signaling, possibly coordinating plant growth and development in response to environmental conditions.
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Affiliation(s)
- Stephen B Rigoulot
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, 37996, USA
| | - H Earl Petzold
- Department of Forest Resources and Environmental Conservation, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Sarah P Williams
- Department of Biochemistry, Virginia Tech, Blacksburg, VA, 24061, USA
- Department of Biology, College of William and Mary, Williamsburg, VA, 23187, USA
| | - Amy M Brunner
- Department of Forest Resources and Environmental Conservation, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Eric P Beers
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24061, USA.
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226
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Zhou X, Ni L, Liu Y, Jiang M. Phosphorylation of bip130 by OsMPK1 regulates abscisic acid-induced antioxidant defense in rice. Biochem Biophys Res Commun 2019; 514:750-755. [PMID: 31078272 DOI: 10.1016/j.bbrc.2019.04.183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 04/27/2019] [Indexed: 10/26/2022]
Abstract
In rice (Oryza sativa), the mitogen-activated protein kinase 1, OsMPK1, has been shown to play an important role in abscisic acid (ABA)-induced antioxidant defense and to enhance the tolerance of plants to drought, salinity and oxidative stress. However, its downstream molecular mechanisms are poorly understood. Here, we identified a BRI1-KD interacting protein 130, bip130, which interacts with OsMPK1 in vitro and in vivo. A transient expression analysis in combination with mutant analysis in rice protoplasts revealed that bip130 is required for ABA-induced antioxidant defense in an OsMPK1-dependent manner. Furthermore, bip130 can be phosphorylated by OsMPK1 at Thr-153 in vitro, and Thr-153 is essential for the ABA-induced antioxidant defense by OsMPK1. These results reveal that OsMPK1 phosphorylates bip130 at Thr-153 to regulate ABA-induced antioxidant defense.
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Affiliation(s)
- Xin Zhou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lan Ni
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yaqin Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingyi Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.
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227
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Zhang P, Fan Y, Sun X, Chen L, Terzaghi W, Bucher E, Li L, Dai M. A large-scale circular RNA profiling reveals universal molecular mechanisms responsive to drought stress in maize and Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 98:697-713. [PMID: 30715761 DOI: 10.1111/tpj.14267] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/23/2019] [Accepted: 01/28/2019] [Indexed: 05/19/2023]
Abstract
Drought is a major abiotic stress that threatens global food security. Circular RNAs (circRNAs) are endogenous RNAs. How these molecules influence plant stress responses remains elusive. Here, a large-scale circRNA profiling identified 2174 and 1354 high-confidence circRNAs in maize and Arabidopsis, respectively, and most were differentially expressed in response to drought. A substantial number of drought-associated circRNA-hosting genes were involved in conserved or species-specific pathways in drought responses. Comparative analysis revealed that circRNA biogenesis was more complex in maize than in Arabidopsis. In most cases, maize circRNAs were negatively correlated with sRNA accumulation. In 368 maize inbred lines, the circRNA-hosting genes were enriched for single nucleotide polymorphisms (SNPs) associated with circRNA expression and drought tolerance, implying either important roles of circRNAs in maize drought responses or their potential use as biomarkers for breeding drought-tolerant maize. Additionally, the expression levels of circRNAs derived from drought-responsible genes encoding calcium-dependent protein kinase and cytokinin oxidase/dehydrogenase were significantly associated with drought tolerance of maize seedlings. Specifically, Arabidopsis plants overexpressing circGORK (Guard cell outward-rectifying K+ -channel) were hypersensitive to abscisic acid, but insensitive to drought, suggesting a positive role of circGORK in drought tolerance. We report the transcriptomic profiling and transgenic studies of circRNAs in plant drought responses, and provide evidence highlighting the universal molecular mechanisms involved in plant drought tolerance.
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Affiliation(s)
- Pei Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yuan Fan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaopeng Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lu Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - William Terzaghi
- Department of Biology, Wilkes University, Wilkes-Barre, PA, 18766, USA
| | - Etienne Bucher
- IRHS, Université d'Angers, INRA, AGROCAMPUS-Ouest, SFR4207 QUASAV, Université Bretagne Loire, 49045, Angers, France
| | - Lin Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mingqiu Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
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228
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Li Z, Li L, Zhou K, Zhang Y, Han X, Din Y, Ge X, Qin W, Wang P, Li F, Ma Z, Yang Z. GhWRKY6 Acts as a Negative Regulator in Both Transgenic Arabidopsis and Cotton During Drought and Salt Stress. Front Genet 2019; 10:392. [PMID: 31080461 PMCID: PMC6497802 DOI: 10.3389/fgene.2019.00392] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/10/2019] [Indexed: 11/16/2022] Open
Abstract
Drought and high salinity are key limiting factors for cotton production. Therefore, research is increasingly focused on the underlying stress response mechanisms of cotton. We first identified and cloned a novel gene encoding the 525 amino acids in cotton, namely GhWRKY6. qRT-PCR analysis indicated that GhWRKY6 was induced by NaCl, PEG 6000 and ABA. Analyses of germination rate and root length indicated that overexpression of GhWRKY6 in Arabidopsis resulted in hypersensitivity to ABA, NaCl, and PEG 6000. In contrast, the loss-of-function mutant wrky6 was insensitive and had slightly longer roots than the wild-type did under these treatment conditions. Furthermore, GhWRKY6 overexpression in Arabidopsis modulated salt- and drought-sensitive phenotypes and stomatal aperture by regulating ABA signaling pathways, and reduced plant tolerance to abiotic stress through reactive oxygen species (ROS) enrichment, reduced proline content, and increased electrolytes and malondialdehyde (MDA). The expression levels of a series of ABA-, salt- and drought-related marker genes were altered in overexpression seedlings. Virus-induced gene silencing (VIGS) technology revealed that down-regulation of GhWRKY6 increased salt tolerance in cotton. These results demonstrate that GhWRKY6 is a negative regulator of plant responses to abiotic stress via the ABA signaling pathway.
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Affiliation(s)
- Zhi Li
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Lei Li
- Anyang Hospital of Traditional Chinese Medicine, Anyang, China
| | - Kehai Zhou
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Yihao Zhang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiao Han
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Yanpeng Din
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiaoyang Ge
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Wenqiang Qin
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Peng Wang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Fuguang Li
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Zhiying Ma
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Zhaoen Yang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
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229
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What Makes the Wood? Exploring the Molecular Mechanisms of Xylem Acclimation in Hardwoods to an Ever-Changing Environment. FORESTS 2019. [DOI: 10.3390/f10040358] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Wood, also designated as secondary xylem, is the major structure that gives trees and other woody plants stability for upright growth and maintains the water supply from the roots to all other plant tissues. Over recent decades, our understanding of the cellular processes of wood formation (xylogenesis) has substantially increased. Plants as sessile organisms face a multitude of abiotic stresses, e.g., heat, drought, salinity and limiting nutrient availability that require them to adjust their wood structure to maintain stability and water conductivity. Because of global climate change, more drastic and sudden changes in temperature and longer periods without precipitation are expected to impact tree productivity in the near future. Thus, it is essential to understand the process of wood formation in trees under stress. Many traits, such as vessel frequency and size, fiber thickness and density change in response to different environmental stimuli. Here, we provide an overview of our current understanding of how abiotic stress factors affect wood formation on the molecular level focussing on the genes that have been identified in these processes.
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230
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Li Y, Zhang S, Zhang N, Zhang W, Li M, Liu B, Shi Z. MYB-CC transcription factor, TaMYBsm3, cloned from wheat is involved in drought tolerance. BMC PLANT BIOLOGY 2019; 19:143. [PMID: 30987595 PMCID: PMC6466810 DOI: 10.1186/s12870-019-1751-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 03/31/2019] [Indexed: 05/21/2023]
Abstract
BACKGROUND MYB-CC transcription factors (TFs) genes have been demonstrated to be involved in the response to inorganic phosphate (Pi) starvation and regulate some Pi-starvation-inducible genes. However, their role in drought stress has not been investigated in bread wheat. In this study, the TaMYBsm3 genes, including TaMYBsm3-A, TaMYBsm3-B, and TaMYBsm3-D, encoding MYB-CC TF proteins in bread wheat, were isolated to investigate the possible molecular mechanisms related to drought-tolerance in plants. RESULTS TaMYBsm3-A, TaMYBsm3-B, and TaMYBsm3-D were mapped on chromosomes 6A, 6B, and 6D in wheat, respectively. TaMYBsm3 genes belonged to MYB-CC TFs, containing a conserved MYB DNA-binding domain and a conserved coiled-coil domain. TaMYBsm3-D was localized in the nucleus, and the N-terminal region was a transcriptional activation domain. TaMYBsm3 genes were ubiquitously expressed in different tissues of wheat, and especially highly expressed in the stamen and pistil. Under drought stress, transgenic plants exhibited milder wilting symptoms, higher germination rates, higher proline content, and lower MDA content comparing with the wild type plants. P5CS1, DREB2A, and RD29A had significantly higher expression in transgenic plants than in wild type plants. CONCLUSION TaMYBsm3-A, TaMYBsm3-B, and TaMYBsm3-D were associated with enhanced drought tolerance in bread wheat. Overexpression of TaMYBsm3-D increases the drought tolerance of transgenic Arabidopsis through up-regulating P5CS1, DREB2A, and RD29A.
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Affiliation(s)
- Yaqing Li
- Shijiazhuang Academy of Agriculture and Forestry Sciences, No.479 Shengli North Street, Chang’an district, Shijiazhuang, 050041 Hebei Province China
| | - Shichang Zhang
- Shijiazhuang Academy of Agriculture and Forestry Sciences, No.479 Shengli North Street, Chang’an district, Shijiazhuang, 050041 Hebei Province China
| | - Nan Zhang
- Shijiazhuang Academy of Agriculture and Forestry Sciences, No.479 Shengli North Street, Chang’an district, Shijiazhuang, 050041 Hebei Province China
| | - Wenying Zhang
- Dryland Farming Institute, Hebei Academy of Agriculture and Forestry Sciences, Hengshui, 053000 China
| | - Mengjun Li
- Shijiazhuang Academy of Agriculture and Forestry Sciences, No.479 Shengli North Street, Chang’an district, Shijiazhuang, 050041 Hebei Province China
| | - Binhui Liu
- Dryland Farming Institute, Hebei Academy of Agriculture and Forestry Sciences, Hengshui, 053000 China
| | - Zhanliang Shi
- Shijiazhuang Academy of Agriculture and Forestry Sciences, No.479 Shengli North Street, Chang’an district, Shijiazhuang, 050041 Hebei Province China
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231
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Joo H, Lim CW, Lee SC. A pepper RING-type E3 ligase, CaASRF1, plays a positive role in drought tolerance via modulation of CaAIBZ1 stability. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 98:5-18. [PMID: 30548716 DOI: 10.1111/tpj.14191] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 05/11/2023]
Abstract
Plants have evolved complex defense mechanisms to adapt and survive under adverse growth conditions. Abscisic acid (ABA) is a phytohormone that plays a pivotal role in the stress response, especially regulation of the stomatal aperture in response to drought. Here, we identified the pepper CaASRF1 (Capsicum annuum ABA Sensitive RING Finger E3 ligase 1) gene, which modulates drought stress tolerance via ABA-mediated signaling. CaASRF1 contains a C3H2C3-type RING finger domain, which functions as an E3 ligase by attaching ubiquitins to the target proteins. CaASRF1 expression was enhanced after exposure to ABA, drought and NaCl. Loss-of-function in pepper plants and gain-of-function in Arabidopsis plants revealed that CaASRF1 positively modulates ABA signaling and the drought stress response. Moreover, CaASRF1 interacted with and was associated with degradation of the bZIP transcription factor CaAIBZ1 (Capsicum annuum ASRF1-Interacting bZIP transcription factor 1). Contrary to CaASRF1 phenotypes, CaAIBZ1-silenced pepper and CaAIBZ1-overexpressing Arabidopsis exhibited drought-tolerant and drought-sensitive phenotypes, respectively. Taken together, our data indicate that CaASRF1 positively modulates ABA signaling and the drought stress response via modulation of CaAIBZ1 stability.
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Affiliation(s)
- Hyunhee Joo
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, 06974, Korea
| | - Chae Woo Lim
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, 06974, Korea
| | - Sung Chul Lee
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, 06974, Korea
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Ding Z, Fu L, Tie W, Yan Y, Wu C, Hu W, Zhang J. Extensive Post-Transcriptional Regulation Revealed by Transcriptomic and Proteomic Integrative Analysis in Cassava under Drought. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3521-3534. [PMID: 30830777 DOI: 10.1021/acs.jafc.9b00014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cassava is a major tropical/subtropical food crop and its yield is greatly restrained by drought; however, the mechanism underlying the drought stress remains largely unknown. In this study, totally 1242 and 715 differentially expressed genes (DEGs), together with 237 and 307 differentially expressed proteins (DEPs), were respectively identified in cassava leaves and roots through RNA-seq and iTRAQ techniques. The majority of DEGs and DEPs were exclusively regulated at the mRNA and protein level, respectively, whereas only a few were commonly regulated, indicating the major involvement of post-transcriptional regulation under drought. Subsequently, the functions of these specifically or commonly regulated DEGs and DEPs were analyzed, and the post-transcriptional regulation of genes involved in heat shock protein, secondary metabolism biosynthesis, and hormone biosynthesis was extensively discussed. This is the first report on an integration of transcriptomic and proteomic analysis in cassava, and it provides new insights into the post-transcriptional regulation of cassava drought stress.
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Affiliation(s)
- Zehong Ding
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
| | - Lili Fu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
| | - Weiwei Tie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
| | - Yan Yan
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
| | - Chunlai Wu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
- Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Chinese National Center of Plant Gene Research (Wuhan) HUST Part, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Wei Hu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
| | - Jiaming Zhang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology , Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4 , Haikou , Hainan 571101 , China
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233
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Swift J, Adame M, Tranchina D, Henry A, Coruzzi GM. Water impacts nutrient dose responses genome-wide to affect crop production. Nat Commun 2019; 10:1374. [PMID: 30914651 PMCID: PMC6435674 DOI: 10.1038/s41467-019-09287-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 02/26/2019] [Indexed: 01/20/2023] Open
Abstract
Changes in nutrient dose have dramatic effects on gene expression and development. One outstanding question is whether organisms respond to changes in absolute nutrient amount (moles) vs. its concentration in water (molarity). This question is particularly relevant to plants, as soil drying can alter nutrient concentration, without changing its absolute amount. To compare the effects of amount vs. concentration, we expose rice to a factorial matrix varying the dose of nitrogen (N) and water (W) over a range of combinations, and quantify transcriptome and phenotype responses. Using linear models, we identify distinct dose responses to either N-moles, W-volume, N-molarity (N/W), or their synergistic interaction (N×W). Importantly, genes whose expression patterns are best explained by N-dose and W interactions (N/W or N×W) in seedlings are associated with crop outcomes in replicated field trials. Such N-by-W responsive genes may assist future efforts to develop crops resilient to increasingly arid, low nutrient soils.
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Affiliation(s)
- Joseph Swift
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, 10003, NY, USA
| | - Mark Adame
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, 10003, NY, USA
| | - Daniel Tranchina
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, 10003, NY, USA
- Courant Institute for Mathematical Sciences, New York University, New York, 10012, NY, USA
| | - Amelia Henry
- International Rice Research Institute, Los Banos, 4031, Laguna, Philippines
| | - Gloria M Coruzzi
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, 10003, NY, USA.
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Han M, Lu X, Yu J, Chen X, Wang X, Malik WA, Wang J, Wang D, Wang S, Guo L, Chen C, Cui R, Yang X, Ye W. Transcriptome Analysis Reveals Cotton ( Gossypium hirsutum) Genes That Are Differentially Expressed in Cadmium Stress Tolerance. Int J Mol Sci 2019; 20:ijms20061479. [PMID: 30909634 PMCID: PMC6470502 DOI: 10.3390/ijms20061479] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 12/24/2022] Open
Abstract
High concentrations of heavy metals in the soil should be removed for environmental safety. Cadmium (Cd) is a heavy metal that pollutes the soil when its concentration exceeds 3.4 mg/kg. Although the potential use of cotton to remediate heavy Cd-polluted soils is known, little is understood about the molecular mechanisms of Cd tolerance. In this study, transcriptome analysis was used to identify Cd tolerance genes and their potential mechanisms in cotton. We exposed cotton plants to excess Cd and identified 4627 differentially expressed genes (DEGs) in the root, 3022 DEGs in the stem and 3854 DEGs in the leaves through RNA-Seq analysis. Among these genes were heavy metal transporter coding genes (ABC, CDF, HMA, etc.), annexin genes and heat shock genes (HSP), amongst others. Gene ontology (GO) analysis showed that the DEGs were mainly involved in the oxidation–reduction process and metal ion binding. The DEGs were mainly enriched in two pathways, the influenza A and pyruvate pathway. GhHMAD5, a protein containing a heavy-metal binding domain, was identified in the pathway to transport or to detoxify heavy metal ions. We constructed a GhHMAD5 overexpression system in Arabidopsis thaliana that showed longer roots compared to control plants. GhHMAD5-silenced cotton plants showed more sensitivity to Cd stress. The results indicate that GhHMAD5 is involved in Cd tolerance, which gives a preliminary understanding of the Cd tolerance mechanism in upland cotton. Overall, this study provides valuable information for the use of cotton to remediate soils polluted with Cd and potentially other heavy metals.
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Affiliation(s)
- Mingge Han
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Xuke Lu
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - John Yu
- USDA-ARS Southern Plains Agricultural Research Center, College Station, TX 77845, USA.
| | - Xiugui Chen
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Xiaoge Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Waqar Afzal Malik
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Junjuan Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Delong Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Shuai Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Lixue Guo
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Chao Chen
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Ruifeng Cui
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Xiaoming Yang
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
| | - Wuwei Ye
- Institute of Cotton Research of Chinese Academy of Agricultural Science, State Key Laboratory of Cotton Biology, Key Laboratory for Cotton Genetic Improvement, Anyang 455000, Henan, China.
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235
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Populus euphratica JRL Mediates ABA Response, Ionic and ROS Homeostasis in Arabidopsis under Salt Stress. Int J Mol Sci 2019; 20:ijms20040815. [PMID: 30769802 PMCID: PMC6412788 DOI: 10.3390/ijms20040815] [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: 01/11/2019] [Revised: 02/10/2019] [Accepted: 02/11/2019] [Indexed: 11/23/2022] Open
Abstract
Sodium chloride (NaCl) induced expression of a jacalin-related mannose-binding lectin (JRL) gene in leaves, roots, and callus cultures of Populus euphratica (salt-resistant poplar). To explore the mechanism of the PeJRL in salinity tolerance, the full length of PeJRL was cloned from P. euphratica and was transformed into Arabidopsis. PeJRL was localized to the cytoplasm in mesophyll cells. Overexpression of PeJRL in Arabidopsis significantly improved the salt tolerance of transgenic plants, in terms of seed germination, root growth, and electrolyte leakage during seedling establishment. Under NaCl stress, transgenic plants retained K+ and limited the accumulation of Na+. PeJRL-transgenic lines increased Na+ extrusion, which was associated with the upward regulation of SOS1, AHA1, and AHA2 genes encoding plasma membrane Na+/proton (H+) antiporter and H+-pumps. The activated H+-ATPases in PeJRL-overexpressed plants restricted the channel-mediated loss of K+ that was activated by NaCl-induced depolarization. Under salt stress, PeJRL–transgenic Arabidopsis maintained reactive oxygen species (ROS) homeostasis by activating the antioxidant enzymes and reducing the production of O2− through downregulation of NADPH oxidases. Of note, the PeJRL-transgenic Arabidopsis repressed abscisic acid (ABA) biosynthesis, thus reducing the ABA-elicited ROS production and the oxidative damage during the period of salt stress. A schematic model was proposed to show the mediation of PeJRL on ABA response, and ionic and ROS homeostasis under NaCl stress.
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236
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Yang L, Wang S, Sun L, Ruan M, Li S, He R, Zhang W, Liang C, Wang X, Bi Y. Involvement of G6PD5 in ABA response during seed germination and root growth in Arabidopsis. BMC PLANT BIOLOGY 2019; 19:44. [PMID: 30700259 PMCID: PMC6354342 DOI: 10.1186/s12870-019-1647-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/11/2019] [Indexed: 05/15/2023]
Abstract
BACKGROUND Glucose-6-phosphate dehydrogenase (G6PDH or G6PD) functions in supply of NADPH, which is required for plant defense responses to stresses. However, whether G6PD functions in the abscisic acid (ABA) signaling pathway remains to be elucidated. In this study, we investigated the involvement of the cytosolic G6PD5 in the ABA signaling pathway in Arabidopsis. RESULTS We characterized the Arabidopsis single null mutant g6pd5. Phenotypic analysis showed that the mutant is more sensitive to ABA during seed germination and root growth, whereas G6PD5-overexpressing plants are less sensitive to ABA compared to wild type (WT). Furthermore, ABA induces excessive accumulation of reactive oxygen species (ROS) in mutant seeds and seedlings. G6PD5 participates in the reduction of H2O2 to H2O in the ascorbate-glutathione cycle. In addition, we found that G6PD5 suppressed the expression of Abscisic Acid Insensitive 5 (ABI5), the major ABA signaling component in dormancy control. When G6PD5 was overexpressed, the ABA signaling pathway was inactivated. Consistently, G6PD5 negatively modulates ABA-blocked primary root growth in the meristem and elongation zones. Of note, the suppression of root elongation by ABA is triggered by the cell cycle B-type cyclin CYCB1. CONCLUSIONS This study showed that G6PD5 is involved in the ABA-mediated seed germination and root growth by suppressing ABI5.
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Affiliation(s)
- Lei Yang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Shengwang Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Lili Sun
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Mengjiao Ruan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Sufang Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Rui He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Wenya Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Cuifang Liang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
| | - Xiaomin Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai 810016 People’s Republic of China
| | - Yurong Bi
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000 People’s Republic of China
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Sarwar MB, Ahmad Z, Rashid B, Hassan S, Gregersen PL, Leyva MDLO, Nagy I, Asp T, Husnain T. De novo assembly of Agave sisalana transcriptome in response to drought stress provides insight into the tolerance mechanisms. Sci Rep 2019; 9:396. [PMID: 30674899 PMCID: PMC6344536 DOI: 10.1038/s41598-018-35891-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 10/29/2018] [Indexed: 11/30/2022] Open
Abstract
Agave, monocotyledonous succulent plants, is endemic to arid regions of North America, exhibiting exceptional tolerance to their xeric environments. They employ various strategies to overcome environmental constraints, such as crassulacean acid metabolism, wax depositions, and protective leaf morphology. Genomic resources of Agave species have received little attention irrespective of their cultural, economic and ecological importance, which so far prevented the understanding of the molecular bases underlying their adaptations to the arid environment. In this study, we aimed to elucidate molecular mechanism(s) using transcriptome sequencing of A. sisalana. A de novo approach was applied to assemble paired-end reads. The expression study unveiled 3,095 differentially expressed unigenes between well-irrigated and drought-stressed leaf samples. Gene ontology and KEGG analysis specified a significant number of abiotic stress responsive genes and pathways involved in processes like hormonal responses, antioxidant activity, response to stress stimuli, wax biosynthesis, and ROS metabolism. We also identified transcripts belonging to several families harboring important drought-responsive genes. Our study provides the first insight into the genomic structure of A. sisalana underlying adaptations to drought stress, thus providing diverse genetic resources for drought tolerance breeding research.
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Affiliation(s)
- Muhammad Bilal Sarwar
- Plant Genomics Lab, Center of Excellence in Molecular Biology, University of the Punjab, 87-West Canal Bank Road Thokar Niaz Baig, Lahore, 53700, Pakistan
- Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, Slagelse, Denmark
| | - Zarnab Ahmad
- Plant Genomics Lab, Center of Excellence in Molecular Biology, University of the Punjab, 87-West Canal Bank Road Thokar Niaz Baig, Lahore, 53700, Pakistan
| | - Bushra Rashid
- Plant Genomics Lab, Center of Excellence in Molecular Biology, University of the Punjab, 87-West Canal Bank Road Thokar Niaz Baig, Lahore, 53700, Pakistan.
| | - Sameera Hassan
- Plant Genomics Lab, Center of Excellence in Molecular Biology, University of the Punjab, 87-West Canal Bank Road Thokar Niaz Baig, Lahore, 53700, Pakistan
| | - Per L Gregersen
- Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, Slagelse, Denmark
| | - Maria De la O Leyva
- Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, Slagelse, Denmark
| | - Istvan Nagy
- Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, Slagelse, Denmark
| | - Torben Asp
- Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, Slagelse, Denmark
| | - Tayyab Husnain
- Plant Genomics Lab, Center of Excellence in Molecular Biology, University of the Punjab, 87-West Canal Bank Road Thokar Niaz Baig, Lahore, 53700, Pakistan
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238
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Liu T, Zhou T, Lian M, Liu T, Hou J, Ijaz R, Song B. Genome-Wide Identification and Characterization of the AREB/ABF/ABI5 Subfamily Members from Solanum tuberosum. Int J Mol Sci 2019; 20:E311. [PMID: 30646545 PMCID: PMC6358972 DOI: 10.3390/ijms20020311] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/01/2019] [Accepted: 01/10/2019] [Indexed: 12/16/2022] Open
Abstract
Abscisic acid (ABA) plays crucial roles in plant development and adaption to environmental stresses. The ABA-responsive element binding protein/ABRE-binding factor and ABA INSENSITIVE 5 (AREB/ABF/ABI5) gene subfamily members, which belong to the basic domain/leucine zipper (bZIP) transcription factors family, participate in the ABA-mediated signaling pathway by regulating the expression of their target genes. However, information about potato (Solanum tuberosum) AREB/ABF/ABI5 subfamily members remains scarce. Here, seven putative AREB/ABF/ABI5 members were identified in the potato genome. Sequences alignment revealed that these members shared high protein sequence similarity, especially in the bZIP region, indicating that they might possess overlapping roles in regulating gene expression. Subcellular localization analysis illustrated that all seven AREB/ABF/ABI5 members were localized in the nucleus. Transactivation activity assays in yeast demonstrated that these AREB/ABF/ABI5 members possessed distinct transcriptional activity. Electrophoretic mobility shift assays (EMSA) confirmed that all of these AREB/ABF/ABI5 members could have an affinity to ABRE in vitro. The expression patterns of these AREB/ABF/ABI5 genes showed that they were in response to ABA or osmotic stresses in varying degrees. Moreover, most AREB/ABF/ABI5 genes were induced during stolon swelling. Overall, these results provide the first comprehensive identification of the potato AREB/ABF/ABI5 subfamily and would facilitate further functional characterization of these subfamily members in future work.
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Affiliation(s)
- Tengfei Liu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
| | - Tingting Zhou
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
| | - Meiting Lian
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
| | - Tiantian Liu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
| | - Juan Hou
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China.
| | - Raina Ijaz
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
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Li W, Hao Z, Pang J, Zhang M, Wang N, Li X, Li W, Wang L, Xu M. Effect of water-deficit on tassel development in maize. Gene 2019; 681:86-92. [PMID: 30253182 DOI: 10.1016/j.gene.2018.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 02/05/2023]
Abstract
Maize often exhibits asynchronous pollination under abiotic and biotic stress conditions; however, the molecular basis of this developmental deficiency has not been elucidated. Tassel development is a key process affecting the anthesis-silking interval (ASI) in maize. In this study, we showed that pollen shedding was delayed and ASI was significantly increased in B73 and Chang7-2 inbred lines under water deficit conditions, which resulted in longer barren tip length and decreased yields under both controlled and field conditions. Comparative transcriptome analysis performed on immature tassels derived from plants grown under well-watered and water deficit conditions identified 1931 and 1713 differentially expressed genes (DEGs) in B73 and Chang7-2, respectively. Further, 28 differentially co-expressed transcription factors were identified across both lines. Collectively, we demonstrated that the molecular regulation of tassel development is associated with water deficit stress at early vegetative stage in maize. This finding extends our understanding of the molecular basis of maize tassel development during abiotic stress.
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Affiliation(s)
- Wenzong Li
- Biotechnology Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China; College of Agronomy of Shihezi University, The Key Laboratory of Oasis Eco-Agriculture of Xinjiang Bingtuan, Xinjiang 832003, China
| | - Zhuanfang Hao
- Crop Science Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Junling Pang
- Biotechnology Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Min Zhang
- Biotechnology Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Nan Wang
- Crop Science Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xinhai Li
- Crop Science Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Weihua Li
- College of Agronomy of Shihezi University, The Key Laboratory of Oasis Eco-Agriculture of Xinjiang Bingtuan, Xinjiang 832003, China.
| | - Lei Wang
- Biotechnology Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Miaoyun Xu
- Biotechnology Research Institute, The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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240
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Polle A, Chen SL, Eckert C, Harfouche A. Engineering Drought Resistance in Forest Trees. FRONTIERS IN PLANT SCIENCE 2019; 9:1875. [PMID: 30671067 DOI: 10.3389/fpls.2018.0187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/04/2018] [Indexed: 05/27/2023]
Abstract
Climatic stresses limit plant growth and productivity. In the past decade, tree improvement programs were mainly focused on yield but it is obvious that enhanced stress resistance is also required. In this review we highlight important drought avoidance and tolerance mechanisms in forest trees. Genomes of economically important trees species with divergent resistance mechanisms can now be exploited to uncover the mechanistic basis of long-term drought adaptation at the whole plant level. Molecular tree physiology indicates that osmotic adjustment, antioxidative defense and increased water use efficiency are important targets for enhanced drought tolerance at the cellular and tissue level. Recent biotechnological approaches focused on overexpression of genes involved in stress sensing and signaling, such as the abscisic acid core pathway, and down-stream transcription factors. By this strategy, a suite of defense systems was recruited, generally enhancing drought and salt stress tolerance under laboratory conditions. However, field studies are still scarce. Under field conditions trees are exposed to combinations of stresses that vary in duration and magnitude. Variable stresses may overrule the positive effect achieved by engineering an individual defense pathway. To assess the usability of distinct modifications, large-scale experimental field studies in different environments are necessary. To optimize the balance between growth and defense, the use of stress-inducible promoters may be useful. Future improvement programs for drought resistance will benefit from a better understanding of the intricate networks that ameliorate molecular and ecological traits of forest trees.
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Affiliation(s)
- Andrea Polle
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Forest Botany and Tree Physiology, University of Goettingen, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Goettingen, Göttingen, Germany
| | - Shao Liang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Christian Eckert
- Forest Botany and Tree Physiology, University of Goettingen, Göttingen, Germany
| | - Antoine Harfouche
- Department for Innovation in Biological, Agrofood and Forest systems, University of Tuscia, Viterbo, Italy
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Polle A, Chen SL, Eckert C, Harfouche A. Engineering Drought Resistance in Forest Trees. FRONTIERS IN PLANT SCIENCE 2019; 9:1875. [PMID: 30671067 PMCID: PMC6331418 DOI: 10.3389/fpls.2018.01875] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/04/2018] [Indexed: 05/03/2023]
Abstract
Climatic stresses limit plant growth and productivity. In the past decade, tree improvement programs were mainly focused on yield but it is obvious that enhanced stress resistance is also required. In this review we highlight important drought avoidance and tolerance mechanisms in forest trees. Genomes of economically important trees species with divergent resistance mechanisms can now be exploited to uncover the mechanistic basis of long-term drought adaptation at the whole plant level. Molecular tree physiology indicates that osmotic adjustment, antioxidative defense and increased water use efficiency are important targets for enhanced drought tolerance at the cellular and tissue level. Recent biotechnological approaches focused on overexpression of genes involved in stress sensing and signaling, such as the abscisic acid core pathway, and down-stream transcription factors. By this strategy, a suite of defense systems was recruited, generally enhancing drought and salt stress tolerance under laboratory conditions. However, field studies are still scarce. Under field conditions trees are exposed to combinations of stresses that vary in duration and magnitude. Variable stresses may overrule the positive effect achieved by engineering an individual defense pathway. To assess the usability of distinct modifications, large-scale experimental field studies in different environments are necessary. To optimize the balance between growth and defense, the use of stress-inducible promoters may be useful. Future improvement programs for drought resistance will benefit from a better understanding of the intricate networks that ameliorate molecular and ecological traits of forest trees.
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Affiliation(s)
- Andrea Polle
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Forest Botany and Tree Physiology, University of Goettingen, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Goettingen, Göttingen, Germany
| | - Shao Liang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Christian Eckert
- Forest Botany and Tree Physiology, University of Goettingen, Göttingen, Germany
| | - Antoine Harfouche
- Department for Innovation in Biological, Agrofood and Forest systems, University of Tuscia, Viterbo, Italy
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Li X, Kong X, Huang Q, Zhang Q, Ge H, Zhang L, Li G, Peng L, Liu Z, Wang J, Li X, Yang Y. CARK1 phosphorylates subfamily III members of ABA receptors. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:519-528. [PMID: 30380101 PMCID: PMC6322571 DOI: 10.1093/jxb/ery374] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 10/15/2018] [Indexed: 05/20/2023]
Abstract
Abscisic acid (ABA) plays a vital role in responses to abiotic stresses that allow plants to cope with environmental challenges. In this study, we analyzed ABA receptors of subfamily III as the potential targets of Cytosolic ABA Receptor Kinase 1 (CARK1). We previously found that CARK1 phosphorylated the subfamily III member RCAR11 at a distinct threonine residue (T78). Our study now shows the physical interaction of CARK1 with the receptors RCAR12/13/14 in vitro and in vivo. The catalytically inactive form CARK1-N204A did not interact with the receptors. Phosphorylation of these ABA receptors in vitro occurred at a serine/threonine amino acid residue corresponding to T78 in RCAR11, which is located in the loop of β3 within a conserved site. Further analysis revealed that the phosphorylation of RCAR11T78 could increase the sensitivity of the pyr1pyl1pyl2pyl4 quadruple mutant (1124) to ABA, including the inhibition of root elongation and increasing drought tolerance. The analysis of CARK1:1124 complementation and the expression of ABA-related genes indicated that CARK1 could rescue the insensitivity of 1124 to ABA. Our results indicate that CARK1 tends to phosphorylate subfamily III ABA receptors, and the phosphosites RCAR11T78, RCAR12T105, RCAR13T101, and RCAR14S81 are the major sites involved in the activation of the ABA response pathway.
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Affiliation(s)
- Xiaoyi Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xiangge Kong
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Qi Huang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Qian Zhang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hu Ge
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Liang Zhang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Gaoming Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lu Peng
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Zhibin Liu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jianmei Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xufeng Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yi Yang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
- Correspondence:
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Bulgari R, Trivellini A, Ferrante A. Effects of Two Doses of Organic Extract-Based Biostimulant on Greenhouse Lettuce Grown Under Increasing NaCl Concentrations. FRONTIERS IN PLANT SCIENCE 2019; 9:1870. [PMID: 30666260 PMCID: PMC6330896 DOI: 10.3389/fpls.2018.01870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 12/04/2018] [Indexed: 05/13/2023]
Abstract
The enhancement of plant tolerance toward abiotic stresses is increasingly being supported by the application of biostimulants. Salinity represents a serious problem in the Mediterranean region. To verify the effects deriving from the application of biostimulants, trials on Romaine lettuce plants under salt exposure were performed, in greenhouse. Plants were subjected to three NaCl solutions with 0.8, 1.3, and 1.8 dS/m of electrical conductivity. The volume of the solution was 200 mL/plant and delivered every 3 days. Biostimulant treatments started after crop establishment and were: control (water) and two doses (0.1 or 0.2 mL/plant) of the commercial biostimulant Retrosal® (Valagro S.p.A), containing calcium, zinc, and specific active ingredients. Four Retrosal® treatments were applied, every 7 days, directly to the substrate. Non-destructive analyses were conducted to assess the effects on leaf photosynthetic efficiency. At harvest, plants fresh weight (FW) and dry weight were determined, as well as the concentration of chlorophylls, carotenoids, total sugars, nitrate, proline, and abscisic acid (ABA). The biostimulant tested increased significantly the FW of lettuce (+65% in the highest dose) compared to controls. Results indicate that treatments positively affected the chlorophyll content measured in vivo (+45% in the highest dose) and that a general positive effect was observable on net photosynthesis rate. Retrosal® seems to improve the gas exchanges under our experimental conditions. The total sugars levels were not affected by treatments. Biostimulant allowed maintaining nitrate concentration similar to the untreated and unstressed controls. The increasing levels of water salinity caused a raise in proline concentration in control plants (+85%); biostimulant treatments at 0.2 mL/plant dose kept lower the proline levels. All plants treated with the biostimulant showed lower value of ABA (-34%) compared to controls. Results revealed that Retrosal® is able to stimulate plant growth independently from the salinity exposure. However, treated plants reached faster the commercial maturity stage. The fresh biomass of control at the end of experiment, after 30 days, ranged from 15 to 42 g/head, while in biostimulant treated plants ranged from 45 to 94 g/head. The product applied at maximum dose seems to be the most effective in our experimental conditions.
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Affiliation(s)
- Roberta Bulgari
- Department of Agricultural and Environmental Sciences – Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - Alice Trivellini
- Institute of Life Sciences, Scuola Superiore Sant’Anna Pisa, Pisa, Italy
| | - Antonio Ferrante
- Department of Agricultural and Environmental Sciences – Production, Landscape, Agroenergy, University of Milan, Milan, Italy
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Zhao X, Dou L, Gong Z, Wang X, Mao T. BES1 hinders ABSCISIC ACID INSENSITIVE5 and promotes seed germination in Arabidopsis. THE NEW PHYTOLOGIST 2019; 221:908-918. [PMID: 30230549 DOI: 10.1111/nph.15437] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/03/2018] [Indexed: 05/18/2023]
Abstract
Proper regulation of seed germination is essential for the successful propagation of a plant. The transcription factor ABSCISIC ACID INSENSITIVE5 (ABI5) of the abscisic acid (ABA) signaling pathway plays a central role in the inhibition of seed germination. ABI5 is precisely regulated by the core ABA signaling components and multiple other factors. However, the complex regulatory network of ABI5 remains largely unknown. In this study, we determined the biochemical interaction between ABI5 and the BRINSENSITIVE1 (BRI1)-EMS-SUPPRESSOR1 (BES1) transcription factor of the brassinosteroid (BR) signaling pathway, as well as the function of BES1 regulating ABI5 during seed germination in Arabidopsis. BES1 directly interacts with ABI5 both in vitro and in vivo. The bZIP domain of ABI5, which is responsible for DNA binding, is critical for ABI5 binding to BES1. The interaction of BES1 with ABI5 significantly suppressed the binding of ABI5 to the promoter regions of downstream genes, which resulted in their reduced expression and consequently facilitated seed germination. This study shed new light on the coordination of multiple signaling pathways during seed germination. In particular, BES1 directly binds to ABI5, which interferes with its transcriptional activity and suppresses ABA signaling output.
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Affiliation(s)
- Xuan Zhao
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Liru Dou
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xiangfeng Wang
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Tonglin Mao
- State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Sciences, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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Marco F, Busó E, Lafuente T, Carrasco P. Spermine Confers Stress Resilience by Modulating Abscisic Acid Biosynthesis and Stress Responses in Arabidopsis Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:972. [PMID: 31417589 PMCID: PMC6684778 DOI: 10.3389/fpls.2019.00972] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/11/2019] [Indexed: 05/19/2023]
Abstract
Polyamines (PAs) constitute a group of low molecular weight aliphatic amines that have been implicated as key players in growth and development processes, as well as in the response to biotic and abiotic stresses. Transgenic plants overexpressing PA-biosynthetic genes show increased tolerance to abiotic stress. Therein, abscisic acid (ABA) is the hormone involved in plant responses to environmental stresses such as drought or high salinity. An increase in the level of free spermine (Spm) in transgenic Arabidopsis plants resulted in increased levels of endogenous ABA and promoted, in a Spm-dependent way, transcription of different ABA inducible genes. This phenotype was only partially reversed by blocking ABA biosynthesis, indicating an ABA independent response mediated by Spm. Moreover, the phenotype was reproduced by adding Spm to Col0 wild-type Arabidopsis plants. In contrast, Spm-deficient mutants showed a lower tolerance to salt stress. These results indicate that Spm plays a key role in modulating plant stress responses.
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Affiliation(s)
- Francisco Marco
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Valencia, Spain
| | | | - Teresa Lafuente
- Departamento de Biotecnologia de Alimentos, Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain
| | - Pedro Carrasco
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Valencia, Spain
- *Correspondence: Pedro Carrasco,
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246
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Xu L, Xiang G, Sun Q, Ni Y, Jin Z, Gao S, Yao Y. Melatonin enhances salt tolerance by promoting MYB108A-mediated ethylene biosynthesis in grapevines. HORTICULTURE RESEARCH 2019; 6:114. [PMID: 31645968 PMCID: PMC6804660 DOI: 10.1038/s41438-019-0197-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 07/03/2019] [Accepted: 08/14/2019] [Indexed: 05/19/2023]
Abstract
The signal molecules melatonin and ethylene play key roles in abiotic stress tolerance. The interplay between melatonin and ethylene in regulating salt tolerance and the underlying molecular mechanism of this interplay remain unclear. Here, we found that both melatonin and 1-aminocyclopropane-1-carboxylic acid (ACC, a precursor of ethylene) enhanced the tolerance of grapevine to NaCl; additionally, ethylene participated in melatonin-induced salt tolerance. Further experiments indicated that exogenous treatment and endogenous induction of melatonin increased the ACC content and ethylene production in grapevine and tobacco plants, respectively. The expression of MYB108A and ACS1, which function as a transcription factor and a key gene involved in ethylene production, respectively, was strongly induced by melatonin treatment. Additionally, MYB108A directly bound to the promoter of ACS1 and activated its transcription. MYB108A expression promoted ACC synthesis and ethylene production by activating ACS1 expression in response to melatonin treatment. The suppression of MYB108A expression partially limited the effect of melatonin on the induction of ethylene production and reduced melatonin-induced salt tolerance. Collectively, melatonin promotes ethylene biosynthesis and salt tolerance through the regulation of ACS1 by MYB108A.
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Affiliation(s)
- Lili Xu
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Guangqing Xiang
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Qinghua Sun
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Yong Ni
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Zhongxin Jin
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Shiwei Gao
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018 China
| | - Yuxin Yao
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018 China
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Li C, Liu S, Zhang W, Chen K, Zhang P. Transcriptional profiling and physiological analysis reveal the critical roles of ROS-scavenging system in the Antarctic moss Pohlia nutans under Ultraviolet-B radiation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 134:113-122. [PMID: 30448024 DOI: 10.1016/j.plaphy.2018.10.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/23/2018] [Accepted: 10/30/2018] [Indexed: 05/21/2023]
Abstract
Organisms suffer more harmful ultraviolet radiation in the Antarctica due to the ozone layer destruction. Bryophytes are the dominant flora in the Antarctic continent. However, the molecular mechanism of Antarctic moss adaptation to UV-B radiation remains unclear. In the research, the transcriptional profiling of the Antarctic moss Pohlia nutans under UV-B radiation was conducted by Illumina HiSeq2500 platform. Totally, 72,922 unigenes with N50 length of 1434 bp were generated. Differential expression analysis demonstrated that 581 unigenes were markedly up-regulated and 249 unigenes were significantly down-regulated. The gene clustering analysis showed that these differentially expressed genes (DEGs) includes several transcription factors, photolyases, antioxidant enzymes, and flavonoid biosynthesis-related genes. Further analyses suggested that the content of malondialdehyde (MDA), the activities of several antioxidant enzymes (i.e., catalase, peroxidase, and glutathione reductase) were significantly enhanced upon UV-B treatment. Furthermore, the content of flavonoids and the gene expression levels of their synthesis-related enzymes were also markedly increased when plants were exposed to UV-B light. Therefore, these results suggested that the pathways of antioxidant enzymes, flavonoid synthesis and photolyases were the main defense systems that contributed to the adaption of Pohlia nutans to the enhanced UV-B radiation in Antarctica.
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Affiliation(s)
- Chengcheng Li
- National Glycoengineering Research Center, School of Life Sciences, Shandong University, Jinan, 250100, China
| | - Shenghao Liu
- Key Laboratory of Marine Bioactive Substance, The First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China
| | - Wei Zhang
- School of Environment, Qingdao University, Qingdao, 266061, China
| | - Kaoshan Chen
- National Glycoengineering Research Center, School of Life Sciences, Shandong University, Jinan, 250100, China
| | - Pengying Zhang
- National Glycoengineering Research Center, School of Life Sciences, Shandong University, Jinan, 250100, China.
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Castelán-Muñoz N, Herrera J, Cajero-Sánchez W, Arrizubieta M, Trejo C, García-Ponce B, Sánchez MDLP, Álvarez-Buylla ER, Garay-Arroyo A. MADS-Box Genes Are Key Components of Genetic Regulatory Networks Involved in Abiotic Stress and Plastic Developmental Responses in Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:853. [PMID: 31354752 PMCID: PMC6636334 DOI: 10.3389/fpls.2019.00853] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 06/13/2019] [Indexed: 05/05/2023]
Abstract
Plants, as sessile organisms, adapt to different stressful conditions, such as drought, salinity, extreme temperatures, and nutrient deficiency, via plastic developmental and growth responses. Depending on the intensity and the developmental phase in which it is imposed, a stress condition may lead to a broad range of responses at the morphological, physiological, biochemical, and molecular levels. Transcription factors are key components of regulatory networks that integrate environmental cues and concert responses at the cellular level, including those that imply a stressful condition. Despite the fact that several studies have started to identify various members of the MADS-box gene family as important molecular components involved in different types of stress responses, we still lack an integrated view of their role in these processes. In this review, we analyze the function and regulation of MADS-box gene family members in response to drought, salt, cold, heat, and oxidative stress conditions in different developmental processes of several plants. In addition, we suggest that MADS-box genes are key components of gene regulatory networks involved in plant responses to stress and plant developmental plasticity in response to seasonal changes in environmental conditions.
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Affiliation(s)
- Natalia Castelán-Muñoz
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Postgrado en Recursos Genéticos y Productividad-Fisiología Vegetal, Colegio de Postgraduados, Texcoco, Mexico
| | - Joel Herrera
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Wendy Cajero-Sánchez
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Maite Arrizubieta
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Trejo
- Postgrado en Botánica, Colegio de Postgraduados, Texcoco, Mexico
| | - Berenice García-Ponce
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - María de la Paz Sánchez
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Elena R. Álvarez-Buylla
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Adriana Garay-Arroyo
- Laboratorio de Genética Molecular, Epigenética y Desarrollo de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
- *Correspondence: Adriana Garay-Arroyo
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Chen H, Xu N, Wu Q, Yu B, Chu Y, Li X, Huang J, Jin L. OsMADS27 regulates the root development in a NO 3--Dependent manner and modulates the salt tolerance in rice (Oryza sativa L.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 277:20-32. [PMID: 30466586 DOI: 10.1016/j.plantsci.2018.09.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/31/2018] [Accepted: 09/04/2018] [Indexed: 06/09/2023]
Abstract
OsMADS27 is one of the ANR1-like homologues in rice, whreas its functions in plant growth and development as well as the abiotic stress responses remain unclear. Here we investigated the roles of OsMADS27 in the root development in response to NO3- availability. Constitutive expression of OsMADS27 significantly inhibited the elongation of primary root (PR), but enhanced lateral root (LR) formation in a NO3--dependent manner. Furthermore, OsMADS27 overexpression promoted NO3- accumulation as well as the expression of NO3- transporter genes. ABA is reported to play an important role in mediating the effects of NO3- on the root development, thus it is supposed that OsMADS27 might regulate the root growth and development by ABA pathway. The root growth and development in OsMADS27 overexpression lines was shown to be more sensitive to exogenous ABA than wild type. Moreover, under NO3- conditions, higher levels of ABA accumulates in OsMADS27 overexpression plants. Yeast two-hybrid and bimolecular fluorescence complementation (BiFC) assays showed that OsMADS27 physically interacts with ABA-INSENSITIVE5 (OsABI5) via DELLA protein OsSLR1. More importantly, OsMADS27 overexpression could enhance the salt tolerance. Taken together, our findings suggested that OsMADS27 is an important regulator controlling the root system development and adaption to osmotic stress in rice.
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Affiliation(s)
- Hongli Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Ning Xu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Qi Wu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Bo Yu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Yanli Chu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Xingxing Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Junli Huang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China.
| | - Liang Jin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China.
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An JP, Yao JF, Xu RR, You CX, Wang XF, Hao YJ. Apple bZIP transcription factor MdbZIP44 regulates abscisic acid-promoted anthocyanin accumulation. PLANT, CELL & ENVIRONMENT 2018; 41:2678-2692. [PMID: 29940702 DOI: 10.1111/pce.13393] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/08/2018] [Accepted: 06/21/2018] [Indexed: 05/23/2023]
Abstract
Phytohormone abscisic acid (ABA) induces anthocyanin biosynthesis; however, the underlying molecular mechanism is less known. In this study, we found that the apple MYB transcription factor MdMYB1 activated anthocyanin biosynthesis in response to ABA. Using a yeast screening technique, we isolated MdbZIP44, an ABA-induced bZIP transcription factor in apple, as a co-partner with MdMYB1. MdbZIP44 promoted anthocyanin accumulation in response to ABA by enhancing the binding of MdMYB1 to the promoters of downstream target genes. Furthermore, we identified MdBT2, a BTB protein, as an MdbZIP44-interacting protein. A series of molecular, biochemical, and genetic analysis suggested that MdBT2 degraded MdbZIP44 protein through the Ubiquitin-26S proteasome system, thus inhibiting MdbZIP44-modulated anthocyanin biosynthesis. Taken together, we reveal a novel working mechanism of MdbZIP44-mediated anthocyanin biosynthesis in response to ABA.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Ji-Fang Yao
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Rui-Rui Xu
- College of Biological and Agricultural Engineering, Weifang University, Weifang, Shandong, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Yu-Jin Hao
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
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