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Lei L, Gordon SP, Liu L, Sade N, Lovell JT, Rubio Wilhelmi MDM, Singan V, Sreedasyam A, Hestrin R, Phillips J, Hernandez BT, Barry K, Shu S, Jenkins J, Schmutz J, Goodstein DM, Thilmony R, Blumwald E, Vogel JP. The reference genome and abiotic stress responses of the model perennial grass Brachypodium sylvaticum. G3 (BETHESDA, MD.) 2023; 14:jkad245. [PMID: 37883711 PMCID: PMC10755203 DOI: 10.1093/g3journal/jkad245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/12/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023]
Abstract
Perennial grasses are important forage crops and emerging biomass crops and have the potential to be more sustainable grain crops. However, most perennial grass crops are difficult experimental subjects due to their large size, difficult genetics, and/or their recalcitrance to transformation. Thus, a tractable model perennial grass could be used to rapidly make discoveries that can be translated to perennial grass crops. Brachypodium sylvaticum has the potential to serve as such a model because of its small size, rapid generation time, simple genetics, and transformability. Here, we provide a high-quality genome assembly and annotation for B. sylvaticum, an essential resource for a modern model system. In addition, we conducted transcriptomic studies under 4 abiotic stresses (water, heat, salt, and freezing). Our results indicate that crowns are more responsive to freezing than leaves which may help them overwinter. We observed extensive transcriptional responses with varying temporal dynamics to all abiotic stresses, including classic heat-responsive genes. These results can be used to form testable hypotheses about how perennial grasses respond to these stresses. Taken together, these results will allow B. sylvaticum to serve as a truly tractable perennial model system.
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Affiliation(s)
- Li Lei
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sean P Gordon
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Lifeng Liu
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nir Sade
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel
| | - John T Lovell
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | | | - Vasanth Singan
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Avinash Sreedasyam
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Rachel Hestrin
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jeremy Phillips
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Bryan T Hernandez
- Crop Improvement and Genetics Research Unit, USDA-ARS Western Regional Research Center, Albany, CA 94710, USA
| | - Kerrie Barry
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Shengqiang Shu
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jerry Jenkins
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Jeremy Schmutz
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - David M Goodstein
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Roger Thilmony
- Crop Improvement and Genetics Research Unit, USDA-ARS Western Regional Research Center, Albany, CA 94710, USA
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - John P Vogel
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Liu M, Zhao G, Huang X, Pan T, Chen W, Qu M, Ouyang B, Yu M, Shabala S. Candidate regulators of drought stress in tomato revealed by comparative transcriptomic and proteomic analyses. FRONTIERS IN PLANT SCIENCE 2023; 14:1282718. [PMID: 37936934 PMCID: PMC10627169 DOI: 10.3389/fpls.2023.1282718] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023]
Abstract
Drought is among the most common abiotic constraints of crop growth, development, and productivity. Integrating different omics approaches offers a possibility for deciphering the metabolic pathways and fundamental mechanisms involved in abiotic stress tolerance. Here, we explored the transcriptional and post-transcriptional changes in drought-stressed tomato plants using transcriptomic and proteomic profiles to determine the molecular dynamics of tomato drought stress responses. We identified 22467 genes and 5507 proteins, among which the expression of 3765 genes and 294 proteins was significantly changed under drought stress. Furthermore, the differentially expressed genes (DEGs) and differentially abundant proteins (DAPs) showed a good correlation (0.743). The results indicated that integrating different omics approaches is promising in exploring the multilayered regulatory mechanisms of plant drought resistance. Gene ontology (GO) and pathway analysis identified several GO terms and pathways related to stress resistance, including response to stress, abiotic stimulus, and oxidative stress. The plant hormone abscisic acid (ABA) plays pivotal roles in response to drought stress, ABA-response element binding factor (AREB) is a key positive regulator of ABA signaling. Moreover, our analysis indicated that drought stress increased the abscisic acid (ABA) content, which activated AREB1 expression to regulate the expression of TAS14, GSH-Px-1, and Hsp, ultimately improving tomato drought resistance. In addition, the yeast one-hybrid assay demonstrated that the AREB1 could bind the Hsp promoter to activate Hsp expression. Thus, this study involved a full-scale analysis of gene and protein expression in drought-stressed tomato, deepening the understanding of the regulatory mechanisms of the essential drought-tolerance genes in tomato.
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Affiliation(s)
- Minmin Liu
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Gangjun Zhao
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Xin Huang
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Ting Pan
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Wenjie Chen
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Mei Qu
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Bo Ouyang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | - Min Yu
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
| | - Sergey Shabala
- International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China
- School of Biological Science, University of Western Australia, Crawley, WA, Australia
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Muthusamy SK, Pushpitha P, Makeshkumar T, Sheela MN. Genome-wide identification and expression analysis of Hsp70 family genes in Cassava ( Manihot esculenta Crantz). 3 Biotech 2023; 13:341. [PMID: 37705861 PMCID: PMC10495308 DOI: 10.1007/s13205-023-03760-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023] Open
Abstract
Hsp70 proteins function as molecular chaperones, regulating various cellular processes in plants. In this study, a genome-wide analysis led to the identification of 22 Hsp70 (MeHsp70) genes in cassava. Phylogenetic relationship studies with other Malpighiales genomes (Populus trichocarpa, Ricinus communis and Salix purpurea) classified MeHsp70 proteins into eight groups (Ia, Ib, Ic, Id, Ie, If, IIa and IIb). Promoter analysis of MeHsp70 genes revealed the presence of tissue-specific, light, biotic and abiotic stress-responsive cis-regulatory elements showing their functional importance in cassava. Meta-analysis of publically available RNA-seq transcriptome datasets showed constitutive, tissue-specific, biotic and abiotic stress-specific expression patterns among MeHsp70s in cassava. Among 22 Hsp70, six MeHsp70s viz., MecHsp70-3, MecHsp70-6, MeBiP-1, MeBiP-2, MeBiP-3 and MecpHsp70-2 displayed constitutive expression, while three MecHsp70s were induced under both drought and cold stress conditions. Five MeHsp70s, MecHsp70-7, MecHsp70-11, MecHsp70-12, MecHsp70-13, and MecHsp70-14 were induced under drought stress conditions. We predicted that 19 MeHsp70 genes are under the regulation of 24 miRNAs. This comprehensive genome-wide analysis of the Hsp70 gene family in cassava provided valuable insights into their functional roles and identified various potential Hsp70 genes associated with stress tolerance and adaptation to environmental stimuli. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03760-3.
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Affiliation(s)
- Senthilkumar K. Muthusamy
- Division of Crop Improvement, ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
| | - P. Pushpitha
- Division of Crop Improvement, ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
| | - T. Makeshkumar
- Division of Crop Protection, ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
| | - M. N. Sheela
- Division of Crop Improvement, ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
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Wen J, Qin Z, Sun L, Zhang Y, Wang D, Peng H, Yao Y, Hu Z, Ni Z, Sun Q, Xin M. Alternative splicing of TaHSFA6e modulates heat shock protein-mediated translational regulation in response to heat stress in wheat. THE NEW PHYTOLOGIST 2023; 239:2235-2247. [PMID: 37403528 DOI: 10.1111/nph.19100] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/30/2023] [Indexed: 07/06/2023]
Abstract
Heat stress greatly threatens crop production. Plants have evolved multiple adaptive mechanisms, including alternative splicing, that allow them to withstand this stress. However, how alternative splicing contributes to heat stress responses in wheat (Triticum aestivum) is unclear. We reveal that the heat shock transcription factor gene TaHSFA6e is alternatively spliced in response to heat stress. TaHSFA6e generates two major functional transcripts: TaHSFA6e-II and TaHSFA6e-III. TaHSFA6e-III enhances the transcriptional activity of three downstream heat shock protein 70 (TaHSP70) genes to a greater extent than does TaHSFA6e-II. Further investigation reveals that the enhanced transcriptional activity of TaHSFA6e-III is due to a 14-amino acid peptide at its C-terminus, which arises from alternative splicing and is predicted to form an amphipathic helix. Results show that knockout of TaHSFA6e or TaHSP70s increases heat sensitivity in wheat. Moreover, TaHSP70s are localized in stress granule following exposure to heat stress and are involved in regulating stress granule disassembly and translation re-initiation upon stress relief. Polysome profiling analysis confirms that the translational efficiency of stress granule stored mRNAs is lower at the recovery stage in Tahsp70s mutants than in the wild types. Our finding provides insight into the molecular mechanisms by which alternative splicing improves the thermotolerance in wheat.
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Affiliation(s)
- Jingjing Wen
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhen Qin
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Lv Sun
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yumei Zhang
- Qingdao Agricultural University, Qingdao, 266109, China
| | - Dongli Wang
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Huiru Peng
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yingyin Yao
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhaorong Hu
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhongfu Ni
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Qixin Sun
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Mingming Xin
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
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Wang X, Jin Z, Ding Y, Guo M. Characterization of HSP70 family in watermelon ( Citrullus lanatus): identification, structure, evolution, and potential function in response to ABA, cold and drought stress. Front Genet 2023; 14:1201535. [PMID: 37323666 PMCID: PMC10265491 DOI: 10.3389/fgene.2023.1201535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Watermelon (Citrullus lanatus) as a crop with important economic value, is widely cultivated around the world. The heat shock protein 70 (HSP70) family in plant is indispensable under stress conditions. However, no comprehensive analysis of watermelon HSP70 family is reported to date. In this study, 12 ClHSP70 genes were identified from watermelon, which were unevenly located in 7 out of 11 chromosomes and divided into three subfamilies. ClHSP70 proteins were predicted to be localized primarily in cytoplasm, chloroplast, and endoplasmic reticulum. Two pairs of segmental repeats and 1 pair of tandem repeats existed in ClHSP70 genes, and ClHSP70s underwent strong purification selection. There were many abscisic acid (ABA) and abiotic stress response elements in ClHSP70 promoters. Additionally, the transcriptional levels of ClHSP70s in roots, stems, true leaves, and cotyledons were also analyzed. Some of ClHSP70 genes were also strongly induced by ABA. Furthermore, ClHSP70s also had different degrees of response to drought and cold stress. The above data indicate that ClHSP70s may be participated in growth and development, signal transduction and abiotic stress response, laying a foundation for further analysis of the function of ClHSP70s in biological processes.
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Affiliation(s)
- Xinsheng Wang
- School of Wine and Horticulture, Ningxia University, Yinchuan, China
| | - Zhi Jin
- School of Wine and Horticulture, Ningxia University, Yinchuan, China
| | - Yina Ding
- School of Wine and Horticulture, Ningxia University, Yinchuan, China
| | - Meng Guo
- School of Wine and Horticulture, Ningxia University, Yinchuan, China
- Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan, China
- Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan, Ningxia, China
- Ningxia Facility Horticulture Technology Innovation Center, Ningxia University, Yinchuan, China
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Li AM, Liao F, Wang M, Chen ZL, Qin CX, Huang RQ, Verma KK, Li YR, Que YX, Pan YQ, Huang DL. Transcriptomic and Proteomic Landscape of Sugarcane Response to Biotic and Abiotic Stressors. Int J Mol Sci 2023; 24:ijms24108913. [PMID: 37240257 DOI: 10.3390/ijms24108913] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/16/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Sugarcane, a C4 plant, provides most of the world's sugar, and a substantial amount of renewable bioenergy, due to its unique sugar-accumulating and feedstock properties. Brazil, India, China, and Thailand are the four largest sugarcane producers worldwide, and the crop has the potential to be grown in arid and semi-arid regions if its stress tolerance can be improved. Modern sugarcane cultivars which exhibit a greater extent of polyploidy and agronomically important traits, such as high sugar concentration, biomass production, and stress tolerance, are regulated by complex mechanisms. Molecular techniques have revolutionized our understanding of the interactions between genes, proteins, and metabolites, and have aided in the identification of the key regulators of diverse traits. This review discusses various molecular techniques for dissecting the mechanisms underlying the sugarcane response to biotic and abiotic stresses. The comprehensive characterization of sugarcane's response to various stresses will provide targets and resources for sugarcane crop improvement.
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Affiliation(s)
- Ao-Mei Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Fen Liao
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Miao Wang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Zhong-Liang Chen
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Cui-Xian Qin
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Ruo-Qi Huang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Krishan K Verma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Yang-Rui Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - You-Xiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - You-Qiang Pan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Dong-Liang Huang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
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Wang Y, Sun Z, Wang Q, Xie J, Yu L. Transcriptomics and metabolomics revealed that phosphate improves the cold tolerance of alfalfa. FRONTIERS IN PLANT SCIENCE 2023; 14:1100601. [PMID: 36968379 PMCID: PMC10034057 DOI: 10.3389/fpls.2023.1100601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Alfalfa (Medicago sativa L.) is a highly nutritious leguminous forage that plays an essential role in animal husbandry. In the middle and high latitudes of the northern hemisphere, there are problems with its low rates of overwintering and production. The application of phosphate (P) is an important measure to improve the cold resistance and production of alfalfa, but little is known about the mechanism of P in improving the cold resistance of alfalfa. METHODS This study integrated the transcriptome and metabolome to explain the mechanism of alfalfa in response to low-temperature stress under two applications of P (50 and 200 mg kg-1) and a control of none applied. RESULTS The application of P fertilizer improved the root structure and increased the content of soluble sugar and soluble protein in the root crown. In addition, there were 49 differentially expressed genes (DEGs) with 23 upregulated and 24 metabolites with 12 upregulated when 50 mg kg-1 of P was applied. In contrast, there were 224 DEGs with 173 upregulated and 12 metabolites with 6 upregulated in the plants treated with 200 mg kg-1 of P compared with the Control Check (CK). These genes and metabolites were significantly enriched in the biosynthesis of other secondary metabolites and the metabolic pathways of carbohydrates and amino acids. The integration of the transcriptome and metabolome indicated that P affected the biosynthesis of N-acetyl-L-phenylalanine, L-serine, lactose, and isocitrate during the period of increasing cold. It could also affect the expression of related genes that regulate cold tolerance in alfalfa. DISCUSSION Our findings could contribute to a deeper understanding of the mechanism that alfalfa uses to tolerate cold and lay a theoretical foundation for breeding alfalfa that is highly efficient at utilizing phosphorus.
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Affiliation(s)
- Yuntao Wang
- Grassland Research Institute, Chinese Academy of Agricultural Science, Hohhot, Inner Mongolia, China
| | - Zhen Sun
- College of Grassland, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Qiqi Wang
- Grassland Research Institute, Chinese Academy of Agricultural Science, Hohhot, Inner Mongolia, China
| | - Jihong Xie
- Grassland Research Institute, Chinese Academy of Agricultural Science, Hohhot, Inner Mongolia, China
| | - Linqing Yu
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, China
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Biswal AK, Alakonya AE, Mottaleb KA, Hearne SJ, Sonder K, Molnar TL, Jones AM, Pixley KV, Prasanna BM. Maize Lethal Necrosis disease: review of molecular and genetic resistance mechanisms, socio-economic impacts, and mitigation strategies in sub-Saharan Africa. BMC PLANT BIOLOGY 2022; 22:542. [PMID: 36418954 PMCID: PMC9686106 DOI: 10.1186/s12870-022-03932-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Maize lethal necrosis (MLN) disease is a significant constraint for maize producers in sub-Saharan Africa (SSA). The disease decimates the maize crop, in some cases, causing total crop failure with far-reaching impacts on regional food security. RESULTS In this review, we analyze the impacts of MLN in Africa, finding that resource-poor farmers and consumers are the most vulnerable populations. We examine the molecular mechanism of MLN virus transmission, role of vectors and host plant resistance identifying a range of potential opportunities for genetic and phytosanitary interventions to control MLN. We discuss the likely exacerbating effects of climate change on the MLN menace and describe a sobering example of negative genetic association between tolerance to heat/drought and susceptibility to viral infection. We also review role of microRNAs in host plant response to MLN causing viruses as well as heat/drought stress that can be carefully engineered to develop resistant varieties using novel molecular techniques. CONCLUSIONS With the dual drivers of increased crop loss due to MLN and increased demand of maize for food, the development and deployment of simple and safe technologies, like resistant cultivars developed through accelerated breeding or emerging gene editing technologies, will have substantial positive impact on livelihoods in the region. We have summarized the available genetic resources and identified a few large-effect QTLs that can be further exploited to accelerate conversion of existing farmer-preferred varieties into resistant cultivars.
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Affiliation(s)
- Akshaya Kumar Biswal
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico.
| | - Amos Emitati Alakonya
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Khondokar Abdul Mottaleb
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Sarah J Hearne
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Kai Sonder
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | | | - Alan M Jones
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kevin Vail Pixley
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
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Mitochondrial HSC70-1 Regulates Polar Auxin Transport through ROS Homeostasis in Arabidopsis Roots. Antioxidants (Basel) 2022; 11:antiox11102035. [PMID: 36290758 PMCID: PMC9598091 DOI: 10.3390/antiox11102035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/08/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Arabidopsis mitochondrial-localized heat shock protein 70-1 (mtHSC70-1) modulates vegetative growth by assisting mitochondrial complex IV assembly and maintaining reactive oxygen species (ROS) homeostasis. In addition, mtHSC70-1 affects embryo development, and this effect is mediated by auxin. However, whether mtHSC70-1 regulates vegetative growth through auxin and knowledge of the link between ROS homeostasis and auxin distribution remain unclear. Here, we found that mtHSC70-1 knockout seedlings (mthsc70-1a) displayed shortened roots, decreased fresh root weight and lateral root number, increased root width and abnormal root morphology. The introduction of the mtHSC70-1 gene into mthsc70-1a restored the growth and development of roots to the level of the wild type. However, sugar and auxin supplementation could not help the mutant roots restore to normal. Moreover, mthsc70-1a seedlings showed a decrease in meristem length and activity, auxin transport carrier (PINs and AUX1) and auxin abundances in root tips. The application of exogenous reducing agents upregulated the levels of PINs in the mutant roots. The introduction of antioxidant enzyme genes (MSD1 or CAT1) into the mthsc70-1a mutant rescued the PIN and local auxin abundances and root growth and development. Taken together, our data suggest that mtHSC70-1 regulates polar auxin transport through ROS homeostasis in Arabidopsis roots.
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Wang H, Dong Z, Chen J, Wang M, Ding Y, Xue Q, Liu W, Niu Z, Ding X. Genome-wide identification and expression analysis of the Hsp20, Hsp70 and Hsp90 gene family in Dendrobium officinale. FRONTIERS IN PLANT SCIENCE 2022; 13:979801. [PMID: 36035705 PMCID: PMC9399769 DOI: 10.3389/fpls.2022.979801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Dendrobium officinale, an important orchid plant with great horticultural and medicinal values, frequently suffers from abiotic or biotic stresses in the wild, which may influence its well-growth. Heat shock proteins (Hsps) play essential roles in the abiotic stress response of plants. However, they have not been systematically investigated in D. officinale. Here, we identified 37 Hsp20 genes (DenHsp20s), 43 Hsp70 genes (DenHsp70s) and 4 Hsp90 genes (DenHsp90s) in D. officinale genome. These genes were classified into 8, 4 and 2 subfamilies based on phylogenetic analysis and subcellular predication, respectively. Sequence analysis showed that the same subfamily members have relatively conserved gene structures and similar protein motifs. Moreover, we identified 33 pairs of paralogs containing 30 pairs of tandem duplicates and 3 pairs of segmental duplicates among these genes. There were 7 pairs in DenHsp70s under positive selection, which may have important functions in helping cells withstand extreme stress. Numerous gene promoter sequences contained stress and hormone response cis-elements, especially light and MeJA response elements. Under MeJA stress, DenHsp20s, DenHsp70s and DenHsp90s responded to varying degrees, among which DenHsp20-5,6,7,16 extremely up-regulated, which may have a strong stress resistance. Therefore, these findings could provide useful information for evolutional and functional investigations of Hsp20, Hsp70 and Hsp90 genes in D. officinale.
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Affiliation(s)
- Hongman Wang
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
| | - Zuqi Dong
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
- College of Forestry, Beijing Forestry University, Beijing, China
| | - Jianbing Chen
- College of Forestry, Beijing Forestry University, Beijing, China
| | - Meng Wang
- College of Forestry, Beijing Forestry University, Beijing, China
| | - Yuting Ding
- College of Forestry, Beijing Forestry University, Beijing, China
| | - Qingyun Xue
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
| | - Wei Liu
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
| | - Zhitao Niu
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
| | - Xiaoyu Ding
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- Jiangsu Provincial Engineering Research Center for Technical Industrialization for Dendrobium, Nanjing, China
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11
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Yu J, Yuan Y, Zhang W, Song T, Hou X, Kong L, Cui G. Overexpression of an NF-YC2 gene confers alkali tolerance to transgenic alfalfa ( Medicago sativa L.). FRONTIERS IN PLANT SCIENCE 2022; 13:960160. [PMID: 35991397 PMCID: PMC9389336 DOI: 10.3389/fpls.2022.960160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Alkaline stress severely limits plant growth and yield worldwide. NF-YC transcription factors (TFs) respond to abiotic stress by activating gene expression. However, the biological function of NF-YC TFs in alfalfa (Medicago sativa L.) is not clear. In our study, an NF-YC2 gene was identified and transgenic plants were obtained by constructing overexpression vector and cotyledon node transformation system in alfalfa. The open reading frame of MsNF-YC2 is 879 bp with 32.4 kDa molecular mass. MsNF-YC2 showed tissue expression specificity and was induced by a variety of abiotic stresses including drought, salt, and alkali stress in alfalfa. Under alkali stress treatment, transgenic plants exhibited higher levels of antioxidant enzyme activities and proline (Pro), correlating with a lower levels of hydrogen peroxide (H2O2), superoxide anion (O2 -) compared with wild-type (WT) plants. Transcriptomic results showed that overexpression of MsNF-YC2 regulated the expression of phytohormone signal transduction and photosynthesis-related genes under normal and alkaline stress treatments. These results suggest that the MsNF-YC2 gene plays crucial role enhance alkali adaptation abilities in alfalfa.
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12
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Drought Stress Pre-Treatment Triggers Thermotolerance Acquisition in Durum Wheat. Int J Mol Sci 2022; 23:ijms23147988. [PMID: 35887334 PMCID: PMC9323298 DOI: 10.3390/ijms23147988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 02/04/2023] Open
Abstract
Durum wheat is strongly affected by climatic constraints such as high temperatures and drought, which frequently lead to yield reduction. Damages due to high temperatures are related to plant thermotolerance, a trait determined by two components: basal and acquired thermotolerance. In this study, the effect of drought and heat stress imposed singularly or sequentially was investigated in ten durum wheat cultivars (cvs) at the physiological and molecular level. The traits analyzed were cell membrane stability, relative water content, proline content, and expression level of several genes for heat shock proteins (HSPs). Our results indicate that drought priming can induce the acquisition of thermotolerance in most cultivars already classified as able to acquire thermotolerance by heat pre-treatment. Proline accumulation was correlated to cell membrane stability, meaning that the most thermotolerant cvs were able to accumulate higher levels of proline. Acquired thermotolerance is also due to the activation of HSP gene expression; similarly, pre-treatment with water stress was able to activate HSPs expression. The results reported indicate that water stress plays an important role in inducing thermotolerance, comparable to mild heat stress pre-treatment. This is the first report on the effect of drought stress on the acquisition of thermotolerance.
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13
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Verma K, Song XP, Yadav G, Degu HD, Parvaiz A, Singh M, Huang HR, Mustafa G, Xu L, Li YR. Impact of Agroclimatic Variables on Proteogenomics in Sugar Cane ( Saccharum spp.) Plant Productivity. ACS OMEGA 2022; 7:22997-23008. [PMID: 35847309 PMCID: PMC9280927 DOI: 10.1021/acsomega.2c01395] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Sugar cane (Saccharum spp. hybrids) is a major crop for sugar and renewable bioenergy worldwide, grown in arid and semiarid regions. China, the world's fourth-largest sugar producer after Brazil, India, and the European Union, all share ∼80% of the global production, and the remaining ∼20% of sugar comes from sugar beets, mostly grown in the temperate regions of the Northern Hemisphere, also used as a raw material in production of bioethanol for renewable energy. In view of carboxylation strategies, sugar cane qualifies as one of the best C4 crop. It has dual CO2 concentrating mechanisms located in its unique Krantz anatomy, having dimorphic chloroplasts located in mesophylls and bundle sheath cells for integrated operation of C4 and C3 carbon fixation cycles, regulated by enzymes to upgrade/sustain an ability for improved carbon assimilation to acquire an optimum carbon economy by producing enhanced plant biomass along with sugar yield under elevated temperature and strong irradiance with improved water-use efficiency. These superior intrinsic physiological carbon metabolisms encouraged us to reveal and recollect the facts for moving ahead with the molecular approaches to reveal the expression of proteogenomics linked with plant productivity under abiotic stress during its cultivation in specific agrizones globally.
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Affiliation(s)
- Krishan
K. Verma
- Sugarcane
Research Institute, Guangxi Academy of Agricultural Sciences/, Key
Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi
Key Laboratory of Sugarcane Genetic Improvement Nanning, 530007 Guangxi, China
| | - Xiu-Peng Song
- Sugarcane
Research Institute, Guangxi Academy of Agricultural Sciences/, Key
Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi
Key Laboratory of Sugarcane Genetic Improvement Nanning, 530007 Guangxi, China
| | - Garima Yadav
- Department
of Botany, University of Lucknow, Lucknow 226 007, India
| | - Hewan Demissie Degu
- College
of Agriculture, School of Plant and Horticulture Science Plant Biotechnology, Hawassa University, Sidama, Hawassa 05, Ethiopia
| | - Aqsa Parvaiz
- Centre
of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture FaisalabadFaisalabad 38000, Pakistan
| | - Munna Singh
- Department
of Botany, University of Lucknow, Lucknow 226 007, India
| | - Hai-Rong Huang
- Sugarcane
Research Institute, Guangxi Academy of Agricultural Sciences/, Key
Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi
Key Laboratory of Sugarcane Genetic Improvement Nanning, 530007 Guangxi, China
| | - Ghulam Mustafa
- Centre
of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture FaisalabadFaisalabad 38000, Pakistan
| | - Lin Xu
- Sugarcane
Research Institute, Guangxi Academy of Agricultural Sciences/, Key
Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi
Key Laboratory of Sugarcane Genetic Improvement Nanning, 530007 Guangxi, China
| | - Yang-Rui Li
- Sugarcane
Research Institute, Guangxi Academy of Agricultural Sciences/, Key
Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi
Key Laboratory of Sugarcane Genetic Improvement Nanning, 530007 Guangxi, China
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14
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Ahmad MZ, Shah Z, Ullah A, Ahmed S, Ahmad B, Khan A. Genome wide and evolutionary analysis of heat shock protein 70 proteins in tomato and their role in response to heat and drought stress. Mol Biol Rep 2022; 49:11229-11241. [PMID: 35788950 DOI: 10.1007/s11033-022-07734-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/22/2022] [Indexed: 11/24/2022]
Abstract
Heat shock protein 70 (HSP70) proteins play a crucial role in mitigating the detrimental effects of abiotic stresses in plants. In the present study, 21 full length non-redundant SlHSP70 genes were detected and characterized in tomato (Solanum lycopersicum L.). The SlHSP70 genes were classified into four groups based on phylogenetic analysis. Similarities were observed in gene features and motif structures of SlHSP70s belonging to the same group. SlHSP70 genes were unevenly and unequally mapped on 11 chromosomes. Segmental and tandem duplication are the main events that have contributed to the expansion of the SlHSP70 genes. A large number of groups and sub-groups were generated during comparative analysis of HSP70 genes in multiple plant species including tomato. These findings indicated a common ancestor which created diverse sub-groups prior to a mono-dicot split. The selection pressure on specific codons was identified through a maximum-likelihood approach and we found some important coding sites in the coding region of all groups. Diversifying positive selection was indirectly associated with evolutionary changes in SlHSP70 proteins and suggests that gene evolution modulated the tomato domestication event. In addition, expression analysis using RNA-seq revealed that 21 SlHSP70 genes were differentially expressed in response to drought and heat stress. SlHSP70-5 was down-regulated by heat treatment and up-regulated by drought stress. Furthermore, the expression of some of the duplicate genes was partially redundant, while others showed functional diversity. Our results indicate the diverse role of HSP70 gene family in S. lycopersicum under drought and heat stress conditions and open the gate for further investigation of HSP70 gene family functions, especially under drought and heat stress.
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Affiliation(s)
- Muhammad Zulfiqar Ahmad
- Department of Plant Breeding and Genetics, Faculty of Agriculture, University of Agriculture, D.I. Khan, Pakistan.
| | - Zamarud Shah
- Department of Biotechnology, University of Science and Technology, Bannu, Pakistan
| | - Arif Ullah
- Department of Biotechnology, University of Science and Technology, Bannu, Pakistan
| | - Shakeel Ahmed
- Institute de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Campus Isla Teja, 5090000, Valdivia, Chile
| | - Bushra Ahmad
- Department of Biochemistry, Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
| | - Afrasyab Khan
- Department of Biotechnology, University of Science and Technology, Bannu, Pakistan
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15
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Zhang Z, Jatana BS, Campbell BJ, Gill J, Suseela V, Tharayil N. Cross-inoculation of rhizobiome from a congeneric ruderal plant imparts drought tolerance in maize (Zea mays) through changes in root morphology and proteome. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:54-71. [PMID: 35426964 PMCID: PMC9542220 DOI: 10.1111/tpj.15775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Rhizobiome confer stress tolerance to ruderal plants, yet their ability to alleviate stress in crops is widely debated, and the associated mechanisms are poorly understood. We monitored the drought tolerance of maize (Zea mays) as influenced by the cross-inoculation of rhizobiota from a congeneric ruderal grass Andropogon virginicus (andropogon-inoculum), and rhizobiota from organic farm maintained under mesic condition (organic-inoculum). Across drought treatments (40% field capacity), maize that received andropogon-inoculum produced two-fold greater biomass. This drought tolerance translated to a similar leaf metabolomic composition as that of the well-watered control (80% field capacity) and reduced oxidative damage, despite a lower activity of antioxidant enzymes. At a morphological-level, drought tolerance was associated with an increase in specific root length and surface area facilitated by the homeostasis of phytohormones promoting root branching. At a proteome-level, the drought tolerance was associated with upregulation of proteins related to glutathione metabolism and endoplasmic reticulum-associated degradation process. Fungal taxa belonging to Ascomycota, Mortierellomycota, Archaeorhizomycetes, Dothideomycetes, and Agaricomycetes in andropogon-inoculum were identified as potential indicators of drought tolerance. Our study provides a mechanistic understanding of the rhizobiome-facilitated drought tolerance and demonstrates a better path to utilize plant-rhizobiome associations to enhance drought tolerance in crops.
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Affiliation(s)
- Ziliang Zhang
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | | | | | - Jasmine Gill
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | - Vidya Suseela
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | - Nishanth Tharayil
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
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16
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Chen S, Qiu G. Overexpression of Zostera japonica heat shock protein gene ZjHsp70 enhances the thermotolerance of transgenic Arabidopsis. Mol Biol Rep 2022; 49:6189-6197. [PMID: 35412177 DOI: 10.1007/s11033-022-07411-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/22/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Heat shock protein 70s (Hsp70s) are major members of the heat shock protein family and play a variety of roles to protect plants against stress. Plant Hsp70s are a conserved and widely expressed family of heat shock proteins. They have two main functional regions: N-terminal nucleic acid binding region and C-terminal substrate binding region. METHODS AND RESULTS In this study, we cloned the Hsp70 gene of Zostera japonica (ZjHsp70) based on the sequence obtained by transcriptome sequencing. The transcriptional levels of ZjHsp70 increased significantly at 1 h after heat treatment. ZjHsp70 was located in the cytoplasm and nucleus. The overexpression of ZjHsp70 in Arabidopsis resulted in increased heat tolerance, lower contents of malondialdehyde and higher antioxidant enzyme activity than in the wild type. ZjHsp70 may achieve this goal by maintaining highly active antioxidant enzymes. CONCLUSIONS We show that ZjHsp70 can improve plant heat tolerance by maintaining high antioxidant enzyme activity under high temperature stress. This study provided a basis to study the role of ZjHsp70 in thermotolerance in more detail.
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Affiliation(s)
- Siting Chen
- Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, 536007, Guangxi, China.
| | - Guanglong Qiu
- Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, 536007, Guangxi, China.
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17
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Conti V, Cantini C, Romi M, Cesare MM, Parrotta L, Del Duca S, Cai G. Distinct Tomato Cultivars Are Characterized by a Differential Pattern of Biochemical Responses to Drought Stress. Int J Mol Sci 2022; 23:5412. [PMID: 35628226 PMCID: PMC9141555 DOI: 10.3390/ijms23105412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/28/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
Future climate scenarios suggest that crop plants will experience environmental changes capable of affecting their productivity. Among the most harmful environmental stresses is drought, defined as a total or partial lack of water availability. It is essential to study and understand both the damage caused by drought on crop plants and the mechanisms implemented to tolerate the stress. In this study, we focused on four cultivars of tomato, an economically important crop in the Mediterranean basin. We investigated the biochemical mechanisms of plant defense against drought by focusing on proteins specifically involved in this stress, such as osmotin, dehydrin, and aquaporin, and on proteins involved in the general stress response, such as HSP70 and cyclophilins. Since sugars are also known to act as osmoprotectants in plant cells, proteins involved in sugar metabolism (such as RuBisCO and sucrose synthase) were also analyzed. The results show crucial differences in biochemical behavior among the selected cultivars and highlight that the most tolerant tomato cultivars adopt quite specific biochemical strategies such as different accumulations of aquaporins and osmotins. The data set also suggests that RuBisCO isoforms and aquaporins can be used as markers of tolerance/susceptibility to drought stress and be used to select tomato cultivars within breeding programs.
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Affiliation(s)
- Veronica Conti
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
| | - Claudio Cantini
- National Research Council of Italy, Institute for Bioeconomy (CNR-IBE), 58022 Follonica, Italy;
| | - Marco Romi
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
| | - Maria Michela Cesare
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
| | - Luigi Parrotta
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (L.P.); (S.D.D.)
- Interdepartmental Centre for Agri-Food Industrial Research, University of Bologna, 47521 Cesena, Italy
| | - Stefano Del Duca
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (L.P.); (S.D.D.)
- Interdepartmental Centre for Agri-Food Industrial Research, University of Bologna, 47521 Cesena, Italy
| | - Giampiero Cai
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
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18
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Kang Y, Lee K, Hoshikawa K, Kang M, Jang S. Molecular Bases of Heat Stress Responses in Vegetable Crops With Focusing on Heat Shock Factors and Heat Shock Proteins. FRONTIERS IN PLANT SCIENCE 2022; 13:837152. [PMID: 35481144 PMCID: PMC9036485 DOI: 10.3389/fpls.2022.837152] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/09/2022] [Indexed: 05/09/2023]
Abstract
The effects of the climate change including an increase in the average global temperatures, and abnormal weather events such as frequent and severe heatwaves are emerging as a worldwide ecological concern due to their impacts on plant vegetation and crop productivity. In this review, the molecular processes of plants in response to heat stress-from the sensing of heat stress, the subsequent molecular cascades associated with the activation of heat shock factors and their primary targets (heat shock proteins), to the cellular responses-have been summarized with an emphasis on the classification and functions of heat shock proteins. Vegetables contain many essential vitamins, minerals, antioxidants, and fibers that provide many critical health benefits to humans. The adverse effects of heat stress on vegetable growth can be alleviated by developing vegetable crops with enhanced thermotolerance with the aid of various genetic tools. To achieve this goal, a solid understanding of the molecular and/or cellular mechanisms underlying various responses of vegetables to high temperature is imperative. Therefore, efforts to identify heat stress-responsive genes including those that code for heat shock factors and heat shock proteins, their functional roles in vegetable crops, and also their application to developing vegetables tolerant to heat stress are discussed.
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Affiliation(s)
- Yeeun Kang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
| | - Kwanuk Lee
- National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Wanju-gun, South Korea
| | - Ken Hoshikawa
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Japan
| | | | - Seonghoe Jang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
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19
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Shen X, He J, Ping Y, Guo J, Hou N, Cao F, Li X, Geng D, Wang S, Chen P, Qin G, Ma F, Guan Q. The positive feedback regulatory loop of miR160-Auxin Response Factor 17-HYPONASTIC LEAVES 1 mediates drought tolerance in apple trees. PLANT PHYSIOLOGY 2022; 188:1686-1708. [PMID: 34893896 PMCID: PMC8896624 DOI: 10.1093/plphys/kiab565] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 11/10/2021] [Indexed: 05/25/2023]
Abstract
Drought stress tolerance is a complex trait regulated by multiple factors. Here, we demonstrate that the miRNA160-Auxin Response Factor 17 (ARF17)-HYPONASTIC LEAVES 1 module is crucial for apple (Malus domestica) drought tolerance. Using stable transgenic plants, we found that drought tolerance was improved by higher levels of Mdm-miR160 or MdHYL1 and by decreased levels of MdARF17, whereas reductions in MdHYL1 or increases in MdARF17 led to greater drought sensitivity. Further study revealed that modulation of drought tolerance was achieved through regulation of drought-responsive miRNA levels by MdARF17 and MdHYL1; MdARF17 interacted with MdHYL1 and bound to the promoter of MdHYL1. Genetic analysis further suggested that MdHYL1 is a direct downstream target of MdARF17. Importantly, MdARF17 and MdHYL1 regulated the abundance of Mdm-miR160. In addition, the Mdm-miR160-MdARF17-MdHYL1 module regulated adventitious root development. We also found that Mdm-miR160 can move from the scion to the rootstock in apple and tomato (Solanum lycopersicum), thereby improving root development and drought tolerance of the rootstock. Our study revealed the mechanisms by which the positive feedback loop of Mdm-miR160-MdARF17-MdHYL1 influences apple drought tolerance.
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Affiliation(s)
- Xiaoxia Shen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jieqiang He
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yikun Ping
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Junxing Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Nan Hou
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fuguo Cao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xuewei Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dali Geng
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shicong Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Pengxiang Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Gege Qin
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingmei Guan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
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20
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Bhardwaj A, Devi P, Chaudhary S, Rani A, Jha UC, Kumar S, Bindumadhava H, Prasad PVV, Sharma KD, Siddique KHM, Nayyar H. 'Omics' approaches in developing combined drought and heat tolerance in food crops. PLANT CELL REPORTS 2022; 41:699-739. [PMID: 34223931 DOI: 10.1007/s00299-021-02742-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Global climate change will significantly increase the intensity and frequency of hot, dry days. The simultaneous occurrence of drought and heat stress is also likely to increase, influencing various agronomic characteristics, such as biomass and other growth traits, phenology, and yield-contributing traits, of various crops. At the same time, vital physiological traits will be seriously disrupted, including leaf water content, canopy temperature depression, membrane stability, photosynthesis, and related attributes such as chlorophyll content, stomatal conductance, and chlorophyll fluorescence. Several metabolic processes contributing to general growth and development will be restricted, along with the production of reactive oxygen species (ROS) that negatively affect cellular homeostasis. Plants have adaptive defense strategies, such as ROS-scavenging mechanisms, osmolyte production, secondary metabolite modulation, and different phytohormones, which can help distinguish tolerant crop genotypes. Understanding plant responses to combined drought/heat stress at various organizational levels is vital for developing stress-resilient crops. Elucidating the genomic, proteomic, and metabolic responses of various crops, particularly tolerant genotypes, to identify tolerance mechanisms will markedly enhance the continuing efforts to introduce combined drought/heat stress tolerance. Besides agronomic management, genetic engineering and molecular breeding approaches have great potential in this direction.
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Affiliation(s)
| | - Poonam Devi
- Department of Botany, Panjab University, Chandigarh, India
| | | | - Anju Rani
- Department of Botany, Panjab University, Chandigarh, India
| | | | - Shiv Kumar
- International Center for Agriculture Research in the Dry Areas (ICARDA), Rabat, Morocco
| | - H Bindumadhava
- Dr. Marri Channa Reddy Foundation (MCRF), Hyderabad, India
| | | | | | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, India.
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Davoudi M, Chen J, Lou Q. Genome-Wide Identification and Expression Analysis of Heat Shock Protein 70 ( HSP70) Gene Family in Pumpkin ( Cucurbita moschata) Rootstock under Drought Stress Suggested the Potential Role of these Chaperones in Stress Tolerance. Int J Mol Sci 2022; 23:ijms23031918. [PMID: 35163839 PMCID: PMC8836791 DOI: 10.3390/ijms23031918] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 01/01/2023] Open
Abstract
Heat shock protein 70s (HSP70s) are highly conserved proteins that are involved in stress responses. These chaperones play pivotal roles in protein folding, removing the extra amounts of oxidized proteins, preventing protein denaturation, and improving the antioxidant system activities. This conserved family has been characterized in several crops under drought stress conditions. However, there is no study on HSP70s in pumpkin (Cucurbita moschata). Therefore, we performed a comprehensive analysis of this gene family, including phylogenetic relationship, motif and gene structure analysis, gene duplication, collinearity, and promoter analysis. In this research, we found 21 HSP70s that were classified into five groups (from A to E). These genes were mostly localized in the cytoplasm, chloroplast, mitochondria, nucleus, and endoplasmic reticulum (ER). We could observe more similarity in closely linked subfamilies in terms of motifs, the number of introns/exons, and the corresponding cellular compartments. According to the collinearity analysis, gene duplication had occurred as a result of purifying selection. The results showed that the occurrence of gene duplication for all nine gene pairs was due to segmental duplication (SD). Synteny analysis revealed a closer relationship between pumpkin and cucumber than pumpkin and Arabidopsis. Promoter analysis showed the presence of various cis-regulatory elements in the up-stream region of the HSP70 genes, such as hormones and stress-responsive elements, indicating a potential role of this gene family in stress tolerance. We furtherly performed the gene expression analysis of the HSP70s in pumpkin under progressive drought stress. Pumpkin is widely used as a rootstock to improve stress tolerance, as well as fruit quality of cucumber scion. Since stress-responsive mobile molecules translocate through vascular tissue from roots to the whole plant body, we used the xylem of grafted materials to study the expression patterns of the HSP70 (potentially mobile) gene family. The results indicated that all CmoHSP70s had very low expression levels at 4 days after stress (DAS). However, the genes showed different expression patterns by progressing he drought period. For example, the expression of CmoHSP70-4 (in subgroup E) and CmoHSP70-14 (in subgroup C) sharply increased at 6 and 11 DAS, respectively. However, the expression of all genes belonging to subgroup A did not change significantly in response to drought stress. These findings indicated the diverse roles of this gene family under drought stress and provided valuable information for further investigation on the function of this gene family, especially under stressful conditions.
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Meta-Analysis as a Tool to Identify Candidate Genes Involved in the Fagus sylvatica L. Abiotic Stress Response. FORESTS 2022. [DOI: 10.3390/f13020159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, we aimed to evaluate whether candidate genes for abiotic stresses in Fagus sylvatica L. are also candidate genes for herbaceous plants, with the purpose of better defining the abiotic stress response model of F. sylvatica. Therefore, a meta-analysis was performed on published papers related to abiotic stress. Firstly, we carried out a systematic review regarding the activity of 24 candidate genes selected for F. sylvatica under abiotic stress reported in 503 articles. After choosing the inclusion criteria, 73 articles out of 503, regarding 12 candidate genes, were included in this analysis. We performed an exploratory meta-analysis based on the random-effect model and the combined effect-size approach (Cohen’s d). The results obtained through Forest and Funnel plots indicate that the candidate genes for F. sylvatica are considered to be candidate genes in other herbaceous species. These results allowed us to set up models of plants’ response to abiotic stresses implementing the stress models in forest species. The results of this study will serve to bridge knowledge gaps regarding the pathways of response to abiotic stresses in trees based on the meta-analysis. The study approach used could be extended to observe larger gene databases and different species.
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Yu C, Rong M, Liu Y, Sun P, Xu Y, Wei J. Genome-Wide Identification and Characterization of HSP70 Gene Family in Aquilaria sinensis (Lour.) Gilg. Genes (Basel) 2021; 13:genes13010008. [PMID: 35052349 PMCID: PMC8774897 DOI: 10.3390/genes13010008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/11/2021] [Accepted: 12/17/2021] [Indexed: 01/15/2023] Open
Abstract
The heat shock protein 70 (HSP70) gene family perform a fundamental role in protecting plants against biotic and abiotic stresses. Aquilaria sinensis is a classic stress-induced medicinal plant, producing a valuable dark resin in a wood matrix, known as agarwood, in response to environmental stresses. The HSP70 gene family has been systematic identified in many plants, but there is no comprehensive analysis at the genomic level in A. sinensis. In this study, 15 putative HSP70 genes were identified in A. sinensis through genome-wide bioinformatics analysis. Based on their phylogenetic relationships, the 15 AsHSP70 were grouped into six sub-families that with the conserved motifs and gene structures, and the genes were mapped onto six separate linkage groups. A qRT-PCR analysis showed that the relative expression levels of all the AsHSP70 genes were up-regulated by heat stress. Subcellular localization of all HSP70s was predicted, and three were verified by transiently expressed in Arabidopsis protoplasts. Based on the expression profiles in different tissues and different layers treated with Agar-Wit, we predict AsHSP70 genes are involved in different stages of agarwood formation. The systematic identification and expression analysis of HSP70s gene family imply some of them may play important roles in the formation of agarwood. Our findings not only provide a foundation for further study their biological function in the later research in A. sinensis, but also provides a reference for the analysis of HSPs in other species.
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Affiliation(s)
- Cuicui Yu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
| | - Mei Rong
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
| | - Yang Liu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
| | - Peiwen Sun
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
| | - Yanhong Xu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
- Correspondence: (Y.X.); (J.W.)
| | - Jianhe Wei
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education and National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; (C.Y.); (M.R.); (Y.L.); (P.S.)
- Hainan Provincial Key Laboratory of Resources Conservation and Development of Southern Medicine, Key Laboratory of State Administration of Traditional Chinese Medicine for Agarwood Sustainable Utilization, Hainan Branch of the Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Haikou 570311, China
- Correspondence: (Y.X.); (J.W.)
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Yu X, Mo Z, Tang X, Gao T, Mao Y. Genome-wide analysis of HSP70 gene superfamily in Pyropia yezoensis (Bangiales, Rhodophyta): identification, characterization and expression profiles in response to dehydration stress. BMC PLANT BIOLOGY 2021; 21:435. [PMID: 34560838 PMCID: PMC8464122 DOI: 10.1186/s12870-021-03213-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 09/14/2021] [Indexed: 05/12/2023]
Abstract
BACKGROUND Heat shock proteins (HSPs) perform a fundamental role in protecting plants against abiotic stresses. Individual family members have been analyzed in previous studies, but there has not yet been a comprehensive analysis of the HSP70 gene family in Pyropia yezoensis. RESULTS We investigated 15 putative HSP70 genes in Py. yezoensis. These genes were classified into two sub-families, denoted as DnaK and Hsp110. In each sub-family, there was relative conservation of the gene structure and motif. Synteny-based analysis indicated that seven and three PyyHSP70 genes were orthologous to HSP70 genes in Pyropia haitanensis and Porphyra umbilicalis, respectively. Most PyyHSP70s showed up-regulated expression under different degrees of dehydration stress. PyyHSP70-1 and PyyHSP70-3 were expressed in higher degrees compared with other PyyHSP70s in dehydration treatments, and then expression degrees somewhat decreased in rehydration treatment. Subcellular localization showed PyyHSP70-1-GFP and PyyHSP70-3-GFP were in the cytoplasm and nucleus/cytoplasm, respectively. Similar expression patterns of paired orthologs in Py. yezoensis and Py. haitanensis suggest important roles for HSP70s in intertidal environmental adaptation during evolution. CONCLUSIONS These findings provide insight into the evolution and modification of the PyyHSP70 gene family and will help to determine the functions of the HSP70 genes in Py. yezoensis growth and development.
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Affiliation(s)
- Xinzi Yu
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), Ocean University of China, Qingdao, 266003, China
- College of Marine Life Sciences , Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Zhaolan Mo
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), Ocean University of China, Qingdao, 266003, China
- College of Marine Life Sciences , Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Xianghai Tang
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), Ocean University of China, Qingdao, 266003, China
- College of Marine Life Sciences , Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Tian Gao
- Key Laboratory of Marine Genetics and Breeding (Ministry of Education), Ocean University of China, Qingdao, 266003, China
- College of Marine Life Sciences , Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Yunxiang Mao
- Key Laboratory of Utilization and Conservation of Tropical Marine Bioresource (Hainan Tropical Ocean University), Ministry of Education, Sanya, 572022, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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Liu L, Wang Z, Su Y, Wang T. Population transcriptomic sequencing reveals allopatric divergence and local adaptation in Pseudotaxus chienii (Taxaceae). BMC Genomics 2021; 22:388. [PMID: 34039278 PMCID: PMC8157689 DOI: 10.1186/s12864-021-07682-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/05/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Elucidating the effects of geography and selection on genetic variation is critical for understanding the relative importance of adaptation in driving differentiation and identifying the environmental factors underlying its occurrence. Adaptive genetic variation is common in tree species, especially widely distributed long-lived species. Pseudotaxus chienii can occupy diverse habitats with environmental heterogeneity and thus provides an ideal material for investigating the process of population adaptive evolution. Here, we characterize genetic and expression variation patterns and investigate adaptive genetic variation in P. chienii populations. RESULTS We generated population transcriptome data and identified 13,545 single nucleotide polymorphisms (SNPs) in 5037 unigenes across 108 individuals from 10 populations. We observed lower nucleotide diversity (π = 0.000701) among the 10 populations than observed in other gymnosperms. Significant negative correlations between expression diversity and nucleotide diversity in eight populations suggest that when the species adapts to the surrounding environment, gene expression and nucleotide diversity have a reciprocal relationship. Genetic structure analyses indicated that each distribution region contains a distinct genetic group, with high genetic differentiation among them due to geographical isolation and local adaptation. We used FST outlier, redundancy analysis, and latent factor mixed model methods to detect molecular signatures of local adaptation. We identified 244 associations between 164 outlier SNPs and 17 environmental variables. The mean temperature of the coldest quarter, soil Fe and Cu contents, precipitation of the driest month, and altitude were identified as the most important determinants of adaptive genetic variation. Most candidate unigenes with outlier signatures were related to abiotic and biotic stress responses, and the monoterpenoid biosynthesis and ubiquitin-mediated proteolysis KEGG pathways were significantly enriched in certain populations and deserve further attention in other long-lived trees. CONCLUSIONS Despite the strong population structure in P. chienii, genomic data revealed signatures of divergent selection associated with environmental variables. Our research provides SNPs, candidate unigenes, and biological pathways related to environmental variables to facilitate elucidation of the genetic variation in P. chienii in relation to environmental adaptation. Our study provides a promising tool for population genomic analyses and insights into the molecular basis of local adaptation.
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Affiliation(s)
- Li Liu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhen Wang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yingjuan Su
- School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China.
- Research Institute of Sun Yat-sen University in Shenzhen, Shenzhen, Guangdong, China.
| | - Ting Wang
- College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China.
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26
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Li Z, Tang M, Cheng B, Han L. Transcriptional regulation and stress-defensive key genes induced by γ-aminobutyric acid in association with tolerance to water stress in creeping bentgrass. PLANT SIGNALING & BEHAVIOR 2021; 16:1858247. [PMID: 33470151 PMCID: PMC7889126 DOI: 10.1080/15592324.2020.1858247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
γ-Aminobutyric acid (GABA) acts as an important regulator involved in the mediation of cell signal transduction and stress tolerance in plants. However, the function of GABA in transcriptional regulation is not fully understood in plants under water stress. The creeping bentgrass (Agrostis stolonifera) was pretreated with or without GABA (0.5 mM) for 24 hours before being exposed to 5 days of water stress. Physiological analysis showed that GABA-treated plants maintained significantly higher endogenous GABA content, leaf relative water content, net photosynthetic rate, and lower osmotic potential than untreated plants under water stress. The GABA application also significantly alleviated stress-induced increases in superoxide anion (O2.-) content, hydrogen peroxide (H2O2) content, and electrolyte leakage through enhancing total antioxidant capacity, superoxide dismutase (SOD) activity, and peroxidase (POD) activity in response to water stress. The transcriptomic analysis demonstrated that the GABA-induced changes in differentially expressed genes (DEGs) involved in carbohydrates, amino acids, and secondary metabolism helped to maintain better osmotic adjustment, energy supply, and metabolic homeostasis when creeping bentgrass suffers from water stress. The GABA triggered Ca2+-dependent protein kinase (CDPK) signaling and improved transcript levels of DREB1/2 and WRKY1/24/41 that could be associated with the upregulation of stress-related functional genes such as POD, DHNs, and HSP70 largely contributing to improved tolerance to water stress in relation to the antioxidant, prevention of cell dehydration, and protein protection in leaves.
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Affiliation(s)
- Zhou Li
- Institute of Turfgrass Science, Beijing Forestry University, Beijing, China
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Mingyan Tang
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Bizhen Cheng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Liebao Han
- Institute of Turfgrass Science, Beijing Forestry University, Beijing, China
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Genome-wide identification, classification and expression analysis of the Hsf and Hsp70 gene families in maize. Gene 2020; 770:145348. [PMID: 33333230 DOI: 10.1016/j.gene.2020.145348] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 11/20/2022]
Abstract
Heat shock factors (Hsfs) and heat shock proteins (Hsps) play a critical role in the molecular mechanisms such as plant development and defense against abiotic. As an important food crop, maize is vulnerable to adverse environment such as heat stress and water logging, which leads to a decline in yield and quality. To date, very little is known regarding the structure and function of Hsf and Hsp genes in maize. Although some Hsf and Hsp genes have been characterized in maize, analysis of the entire Hsf and Hsp70 gene families were not completed following Maize (B73) Genome Sequencing Project. Therefore, studying their molecular mechanism and revealing their biological function in plant stress resistance process will contribute to reveal important theoretical significance and application value for improving corn yield and quality. In this study, we have identified 25 ZmHsf and 22 ZmHsp70 genes in maize. The structural characteristics and phylogenetic relationships of the Hsf and Hsp70 gene families of Arabidopsis thaliana, rice and maize were compared. The final 25 ZmHsf proteins and 22 ZmHsp70 proteins were divided into three and four subfamilies, respectively. In addition, chromosomal localization indicated that the ZmHsf and ZmHsp70 genes were unevenly distributed on the chromosome, and the gene structure map revealed the characteristics of their structures. Finally, transcriptome analysis indicated that most of the ZmHsf and ZmHsp70 genes showed different expression patterns at different developmental stages of maize. Further, by semi-quantitative RT-PCR and quantitative real-time PCR analysis, all 25 ZmHsf and 22 ZmHsp70 genes were confirmed to respond to heat stress treatment, indicating that they have potential effects in heat stress response. The analyses performed by combining co-expression network with protein-protein interaction network among the members of the Hsf and Hsp70 gene families in maize further enabled us to recognize components involved in the regulatory network associated with hsfs and hsp70s complex. The predicted subcellular location revealed that maize Hsp70 proteins exhibited a various subcellular distribution, which may be associated with functional diversification in heat stress response. Taken together, our study provides comprehensive information on the members of Hsf and Hsp70 gene families and will help in elucidating their exact function in maize.
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Gregorio Jorge J, Villalobos-López MA, Chavarría-Alvarado KL, Ríos-Meléndez S, López-Meyer M, Arroyo-Becerra A. Genome-wide transcriptional changes triggered by water deficit on a drought-tolerant common bean cultivar. BMC PLANT BIOLOGY 2020; 20:525. [PMID: 33203368 PMCID: PMC7672829 DOI: 10.1186/s12870-020-02664-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 09/23/2020] [Indexed: 06/01/2023]
Abstract
BACKGROUND Common bean (Phaseolus vulgaris L.) is a relevant crop cultivated over the world, largely in water insufficiency vulnerable areas. Since drought is the main environmental factor restraining worldwide crop production, efforts have been invested to amend drought tolerance in commercial common bean varieties. However, scarce molecular data are available for those cultivars of P. vulgaris with drought tolerance attributes. RESULTS As a first approach, Pinto Saltillo (PS), Azufrado Higuera (AH), and Negro Jamapa Plus (NP) were assessed phenotypically and physiologically to determine the outcome in response to drought on these common bean cultivars. Based on this, a Next-generation sequencing approach was applied to PS, which was the most drought-tolerant cultivar to determine the molecular changes at the transcriptional level. The RNA-Seq analysis revealed that numerous PS genes are dynamically modulated by drought. In brief, 1005 differentially expressed genes (DEGs) were identified, from which 645 genes were up-regulated by drought stress, whereas 360 genes were down-regulated. Further analysis showed that the enriched categories of the up-regulated genes in response to drought fit to processes related to carbohydrate metabolism (polysaccharide metabolic processes), particularly genes encoding proteins located within the cell periphery (cell wall dynamics). In the case of down-regulated genes, heat shock-responsive genes, mainly associated with protein folding, chloroplast, and oxidation-reduction processes were identified. CONCLUSIONS Our findings suggest that secondary cell wall (SCW) properties contribute to P. vulgaris L. drought tolerance through alleviation or mitigation of drought-induced osmotic disturbances, making cultivars more adaptable to such stress. Altogether, the knowledge derived from this study is significant for a forthcoming understanding of the molecular mechanisms involved in drought tolerance on common bean, especially for drought-tolerant cultivars such as PS.
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Affiliation(s)
- Josefat Gregorio Jorge
- Consejo Nacional de Ciencia y Tecnología - Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional (CIBA-IPN), Ex-Hacienda San Juan Molino, Carretera Estatal Tecuexcomac- Tepetitla de Lardizábal Km 1.5, 90700 Tlaxcala, Mexico
| | - Miguel Angel Villalobos-López
- Laboratorio de Genómica Funcional y Biotecnología de Plantas, Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional (CIBA-IPN), Ex-Hacienda San Juan Molino, Carretera Estatal Tecuexcomac- Tepetitla de Lardizábal Km 1.5, 90700 Tlaxcala, Mexico
| | - Karen Lizeth Chavarría-Alvarado
- Laboratorio de Genómica Funcional y Biotecnología de Plantas, Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional (CIBA-IPN), Ex-Hacienda San Juan Molino, Carretera Estatal Tecuexcomac- Tepetitla de Lardizábal Km 1.5, 90700 Tlaxcala, Mexico
| | - Selma Ríos-Meléndez
- Laboratorio de Genómica Funcional y Biotecnología de Plantas, Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional (CIBA-IPN), Ex-Hacienda San Juan Molino, Carretera Estatal Tecuexcomac- Tepetitla de Lardizábal Km 1.5, 90700 Tlaxcala, Mexico
| | - Melina López-Meyer
- Departamento de Biotecnología Agrícola, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Instituto Politécnico Nacional (CIIDIR-IPN Unidad Sinaloa), Boulevard Juan de Dios Bátiz Paredes 250, Colonia San Joachin, 81101 Guasave, Sinaloa Mexico
| | - Analilia Arroyo-Becerra
- Laboratorio de Genómica Funcional y Biotecnología de Plantas, Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional (CIBA-IPN), Ex-Hacienda San Juan Molino, Carretera Estatal Tecuexcomac- Tepetitla de Lardizábal Km 1.5, 90700 Tlaxcala, Mexico
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Lu LM, Yang SY, Liu L, Lu YF, Yang SM, Liu F, Ni S, Zeng FC, Ren B, Wang XY, Li LQ. Physiological and quantitative proteomic analysis of NtPRX63-overexpressing tobacco plants revealed that NtPRX63 functions in plant salt resistance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 154:30-42. [PMID: 32521442 DOI: 10.1016/j.plaphy.2020.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
High salinity is harmful to crop yield and productivity. Peroxidases (PRXs) play crucial roles in H2O2 scavenging. In our previous study, PRX63 significantly upregulated in tobacco plants under salt stress. Thus, in order to understand the function of PRX63 in tobacco salt response, we overexpressed this gene in tobacco (Nicotiana tabacum L.), investigated the morphological, physiological and proteomic profiles of NtPRX63-overexpressing tobacco transgenic lines and wild type. The results showed that, compared with the wild type, the transgenic tobacco plants presented enhanced salt tolerance and displayed lower ROS (reactive oxygen species), malondialdehyde (MDA) and Na+ contents; higher biomass, potassium content, soluble sugar content, and peroxidase activity; and higher expression levels of NtSOD, NtPOD and NtCAT. Protein abundance analysis revealed 123 differentially expressed proteins between the transgenic and wild-type plants. These proteins were functionally classified into 18 categories and are involved in 41 metabolic pathways. Furthermore, among the 123 proteins, eight proteins involved in the ROS-scavenging system, 12 involved in photosynthesis and energy metabolism processes, two stress response proteins, one signal transduction protein and one disulfide isomerase were significantly upregulated. Furthermore, three novel proteins that may be involved in the plant salt response were also identified. The results of our study indicate that an enhanced ROS-scavenging ability, together with the expression of proteins related to energy mobilization and the stress response, functions in the confirmed salt resistance of transgenic tobacco plants. Our data provide valuable information for research on the function of NtPRX63 in tobacco in response to abiotic stress.
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Affiliation(s)
- Li-Ming Lu
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Shang-Yu Yang
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Lun Liu
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Yi-Fei Lu
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Shi-Min Yang
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Fan Liu
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Su Ni
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Fu-Chun Zeng
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Bi Ren
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Xi-Yao Wang
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China
| | - Li-Qin Li
- Agriculture College, Sichuan Agriculture University, Chengdu, 611130, PR China.
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30
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Kumar A, Saripalli G, Jan I, Kumar K, Sharma PK, Balyan HS, Gupta PK. Meta-QTL analysis and identification of candidate genes for drought tolerance in bread wheat ( Triticum aestivum L.). PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:1713-1725. [PMID: 32801498 PMCID: PMC7415061 DOI: 10.1007/s12298-020-00847-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/30/2020] [Accepted: 07/03/2020] [Indexed: 05/18/2023]
Abstract
Meta-QTL (MQTL) analysis for drought tolerance was undertaken in bread wheat to identify consensus and robust MQTLs using 340 known QTLs from 11 earlier studies; 13 MQTLs located on 6 chromosomes (1D, 3B, 5A, 6D, 7A and 7D) were identified, with maximum of 4 MQTLs on chromosome 5A. Mean confidence intervals for MQTLs were much narrower (mean, 6.01 cM; range 2.07-19.46 cM), relative to those in original QTLs (mean, 13.6 cM; range, 1.0-119.1 cM). Two MQTLs, namely MQTL4 and MQTL12, were major MQTLs with potential for use in marker-assisting breeding. As many as 228 candidate genes (CGs) were also identified using 6 of the 13 MQTLs. In-silico expression analysis of these 228 CGs allowed identification of 14 important CGs, with + 3 to - 8 fold change in expression under drought (relative to normal conditions) in a tolerant cv. named TAM107. These CGs encoded proteins belonging to the following families: NAD-dependent epimerase/dehydratase, protein kinase, NAD(P)-binding domain protein, heat shock protein 70 (Hsp70), glycosyltransferase 2-like, etc. Important MQTLs and CGs identified in the present study should prove useful for future molecular breeding and for the study of molecular basis of drought tolerance in cereals in general and wheat in particular.
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Affiliation(s)
- Anuj Kumar
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - Gautam Saripalli
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - Irfat Jan
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - Kuldeep Kumar
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - P. K. Sharma
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - H. S. Balyan
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
| | - P. K. Gupta
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India
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Xiao S, Liu L, Zhang Y, Sun H, Zhang K, Bai Z, Dong H, Liu Y, Li C. Tandem mass tag-based (TMT) quantitative proteomics analysis reveals the response of fine roots to drought stress in cotton (Gossypium hirsutum L.). BMC PLANT BIOLOGY 2020; 20:328. [PMID: 32652934 PMCID: PMC7353779 DOI: 10.1186/s12870-020-02531-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/26/2020] [Indexed: 05/29/2023]
Abstract
BACKGROUND Cotton (Gossypium hirsutum L.) is one of the most important cash crops worldwide. Fine roots are the central part of the root system that contributes to plant water and nutrient uptake. However, the mechanisms underlying the response of cotton fine roots to soil drought remains unclear. To elucidate the proteomic changes in fine roots of cotton plants under drought stress, 70-75% and 40-45% soil relative water content treatments were imposed on control (CK) and drought stress (DS) groups, respectively. Then, tandem mass tags (TMT) technology was used to determine the proteome profiles of fine root tissue samples. RESULTS Drought significantly decreased the value of average root diameter of cotton seedlings, whereas the total root length and the activities of antioxidases were increased. To study the molecular mechanisms underlying drought response further, the proteome differences between tissues under CK and DS treatments were compared pairwise at 0, 30, and 45 DAD (days after drought stress). In total, 118 differentially expressed proteins (DEPs) were up-regulated and 105 were down-regulated in the 'DS30 versus CK30' comparison; 662 DEPs were up-regulated, and 611 were down-regulated in the 'DS45 versus CK45' comparison. The functions of these DEPs were classified according to their pathways. Under early stage drought (30 DAD), some DEPs involved in the 'Cutin, suberin, and wax synthesis' pathway were up-regulated, while the down-regulated DEPs were mainly enriched within the 'Monoterpenoid biosynthesis' pathway. Forty-five days of soil drought had a greater impact on DEPs involved in metabolism. Many proteins involving 'Carbohydrate metabolism,' 'Energy metabolism,' 'Fatty acid metabolism,' 'Amino acid metabolism,' and 'Secondary metabolite biosynthesis' were identified as DEPs. Additionally, proteins related to ion transport, stress/defense, and phytohormones were also shown to play roles in determining the fine root growth of cotton plants under drought stress. CONCLUSIONS Our study identified potential biological pathways and drought-responsive proteins related to stress/defense responses and plant hormone metabolism under drought stress. Collectively, our results provide new insights for further improving drought tolerance in cotton and other crops.
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Affiliation(s)
- Shuang Xiao
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Liantao Liu
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Yongjiang Zhang
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Hongchun Sun
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Ke Zhang
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Zhiying Bai
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Hezhong Dong
- Cotton Research Center/ Key Laboratory of Cotton Breeding and Cultivation in Huang-huai-hai Plain, Ministry of Agriculture, Shandong Academy of Agricultural Sciences, Jinan, 250100, Shandong, China
| | - Yuchun Liu
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China
| | - Cundong Li
- College of Agronomy, Hebei Agricultural University/ State Key Laboratory of North China Crop Improvement and Regulation / Key Laboratory of Crop Growth Regulation of HeBei Province, Baoding, 071001, Hebei, China.
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Identification of Heat-Responsive Genes in Guar [ Cyamopsis tetragonoloba (L.) Taub]. Int J Genomics 2020; 2020:3126592. [PMID: 32656260 PMCID: PMC7322617 DOI: 10.1155/2020/3126592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 06/01/2020] [Accepted: 06/08/2020] [Indexed: 01/02/2023] Open
Abstract
The threat of heat stress on crop production increased dramatically due to global warming leading to the rise on the demand of heat-tolerant crops and understanding their tolerance. The leguminous forage crop Guar [Cyamopsis tetragonoloba (L.) Taub] is a high-temperature tolerant plant with numerous works on its tolerance at morph-physiological levels but lack on molecular thermotolerance level. In the current study, the differential gene expression and the underlying metabolic pathways induced by heat treatment were investigated. An RNA-Seq study on Guar leaves was carried out to estimate gene abundance and identify genes involved in heat tolerance to better understand the response mechanisms to heat stress. The results uncovered 1551 up- and 1466 downregulated genes, from which 200 and 72 genes with unknown function could be considered as new genes specific to guar. The upregulated unigenes were associated with 158 enzymes and 102 KEGG pathways. Blast2GO, InterProScan, and Kyoto Encyclopaedia of Genes and Genomes packages were utilized to search the functional annotation, protein analysis, enzymes, and metabolic pathways and revealed hormone signal transduction were enriched during heat stress tolerance. A total of 301 protein families, 551 domains, 15 repeats, and 3 sites were upregulated and matched to those unigenes. A batch of heat-regulated transcription factor transcripts were identified using the PlantTFDB database, which may play roles in heat response in Guar. Interestingly, several heat shock protein families were expressed in response to exposure to stressful conditions for instance small HSP20, heat shock transcription factor family, heat shock protein Hsp90 family, and heat shock protein 70 family. Our results revealed the expressional changes associated with heat tolerance and identified potential key genes in the regulation of this process. These results will provide a good start to dissect the molecular behaviour of plants induced by heat stress and could identify the key genes in stress response for marker-assisted selection in Guar and reveal their roles in stress adaptation in plants.
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Saux M, Ponnaiah M, Langlade N, Zanchetta C, Balliau T, El-Maarouf-Bouteau H, Bailly C. A multiscale approach reveals regulatory players of water stress responses in seeds during germination. PLANT, CELL & ENVIRONMENT 2020; 43:1300-1313. [PMID: 31994739 DOI: 10.1111/pce.13731] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Seed germination is regulated by environmental factors, particularly water availability. Water deficits at the time of sowing impair the establishment of crop plants. Transcriptome and proteome profiling was used to document the responses of sunflower (Helianthus annuus) seeds to moderate water stress during germination in two hybrids that are nominally classed as drought sensitive and drought tolerant. Differences in the water stress-dependent accumulation reactive oxygen species and antioxidant enzymes activities were observed between the hybrids. A pathway-based analysis of the hybrid transcriptomes demonstrated that the water stress-dependent responses of seed metabolism were similar to those of the plant, with a decreased abundance of transcripts encoding proteins associated with metabolism and cell expansion. Moreover, germination under water stress conditions was associated with increased levels of transcripts encoding heat shock proteins. Exposure of germinating seeds to water stress specifically affected the abundance of a small number of proteins, including heat shock proteins. Taken together, these data not only identify factors that are likely to play a key role in drought tolerance during seed germination, but they also demonstrate the importance of the female parent in the transmission of water stress tolerance.
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Affiliation(s)
- Marine Saux
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, Paris, France
| | - Maharajah Ponnaiah
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, Paris, France
| | | | | | - Thierry Balliau
- PAPPSO, GQE-Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | - Christophe Bailly
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, Paris, France
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Panzade KP, Vishwakarma H, Padaria JC. Heat stress inducible cytoplasmic isoform of ClpB1 from Z. nummularia exhibits enhanced thermotolerance in transgenic tobacco. Mol Biol Rep 2020; 47:3821-3831. [PMID: 32367315 DOI: 10.1007/s11033-020-05472-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 04/25/2020] [Indexed: 02/06/2023]
Abstract
Previously, we isolated CDS of Ziziphus nummularia isoform ZnJClpB1-C from heat stress-tolerant genotype Jaisalmer. To further functionally validate ZnJClpB1-C assumed function in tobacco and to generate novel germplasm for heat stress tolerance, this gene was transformed in the Nicotiana tabacum. ClpB proteins are the major key player required for basal and induced heat stress tolerance in plant cells under heat stress. In Ziziphus nummularia ClpB1-C transcript from genotype Jaisalmer was highly upregulated under heat stress conditions, as reported earlier. Nine transgenic lines (T1) from three transgenic tobacco events with single-copy integration (T0 stage) were taken for heat stress analysis at seedling stage. Mature tobacco transgenic plants did not show any deformity as compared to wild plants when grown under normal conditions. Overexpression of ZnJClpB1-C in tobacco significantly increased the tolerance to heat stress. Under heat stress conditions (42 °C), T1 transgenic tobacco seedlings showed higher photosynthetic rate, relative water content, membrane stability index and lower levels of MDA, compared to the wild type untransformed plants. The qRT-PCR analysis revealed different level of transgene expression (1.08 to 3.89 folds) in 9 T1 transgenic lines. In vitro roles of ZnJClpB1-C regulating thermotolerance is not reported so far. These results demonstrated the positive roles of ZnJClpB1-C in enhancing thermotolerance and its use as a genomic resource in the near future for developing heat stress-tolerant germplasm.
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Affiliation(s)
- Kishor Prabhakar Panzade
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- PG School, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Shu Y, Zhou Y, Mu K, Hu H, Chen M, He Q, Huang S, Ma H, Yu X. A transcriptomic analysis reveals soybean seed pre-harvest deterioration resistance pathways under high temperature and humidity stress. Genome 2020; 63:115-124. [PMID: 31774699 DOI: 10.1139/gen-2019-0094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Pre-harvest soybean seeds in the field are susceptible to high temperature and humidity (HTH) stress, leading to pre-harvest seed deterioration, which will result in a reduction in grain quality, yield, and seed vigor. To understand the gene expression involved in seed deterioration response under HTH stress, in this study, we conducted an RNA-Seq analysis using two previously screened soybean cultivars with contrasting seed deterioration resistance. HTH stress induced 1081 and 357 differentially expressed genes (DEGs) in the sensitive cultivar Ningzhen No. 1 and resistant cultivar Xiangdou No. 3, respectively. The majority of DEGs in the resistant cultivar were up-regulated, while down-regulated DEGs were predominant in the sensitive cultivar. KEGG pathway analysis revealed that metabolic pathways, biosynthesis of secondary metabolites, and protein processing in endoplasmic reticulum were the predominant pathways in both cultivars during seed deterioration under HTH stress. The genes involved in photosynthesis, carbohydrate metabolism, lipid metabolism, and heat shock proteins pathways might contribute to the different response to seed deterioration under HTH treatment in the two soybean cultivars. Our study extends the knowledge of gene expression in soybean seed under HTH stress and further provides insight into the molecular mechanism of seed deterioration as well as new strategies for breeding soybean with improved seed deterioration resistance.
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Affiliation(s)
- Yingjie Shu
- College of Agriculture, Anhui Science & Technology University, Fengyang 233100, China
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuli Zhou
- College of Agriculture, Anhui Science & Technology University, Fengyang 233100, China
| | - Kebin Mu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Huimin Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Ming Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingyuan He
- College of Agriculture, Anhui Science & Technology University, Fengyang 233100, China
| | - Shoucheng Huang
- College of Agriculture, Anhui Science & Technology University, Fengyang 233100, China
| | - Hao Ma
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Xingwang Yu
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC 27695, USA
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Physiology and proteomic analysis reveals root, stem and leaf responses to potassium deficiency stress in alligator weed. Sci Rep 2019; 9:17366. [PMID: 31758026 PMCID: PMC6874644 DOI: 10.1038/s41598-019-53916-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/05/2019] [Indexed: 11/09/2022] Open
Abstract
Alligator weed is reported to have a strong ability to adapt to potassium deficiency stress. Proteomic changes in response to this stress are largely unknown in alligator weed seedlings. In this study, we performed physiological and comparative proteomics of alligator weed seedlings between normal growth (CK) and potassium deficiency (LK) stress using 2-DE techniques, including root, stem and leaf tissues. Seedling height, soluble sugar content, PGK activity and H2O2 contents were significantly altered after 15 d of LK treatment. A total of 206 differentially expressed proteins (DEPs) were identified. There were 72 DEPs in the root, 79 in the stem, and 55 in the leaves. The proteomic results were verified using western blot and qRT-PCR assays. The most represented KEGG pathway was "Carbohydrate and energy metabolism" in the three samples. The "Protein degradation" pathway only existed in the stem and root, and the "Cell cycle" pathway only existed in the root. Protein-protein interaction analysis demonstrated that the interacting proteins detected were the most common in the stem, with 18 proteins. Our study highlights protein changes in alligator weed seedling under LK stress and provides new information on the comprehensive analysis of the protein network in plant potassium nutrition.
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Wei SS, Niu WT, Zhai XT, Liang WQ, Xu M, Fan X, Lv TT, Xu WY, Bai JT, Jia N, Li B. Arabidopsis mtHSC70-1 plays important roles in the establishment of COX-dependent respiration and redox homeostasis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5575-5590. [PMID: 31384929 DOI: 10.1093/jxb/erz357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/20/2019] [Indexed: 05/16/2023]
Abstract
The 70 kDa heat shock proteins function as molecular chaperones and are involved in diverse cellular processes. However, the functions of the plant mitochondrial HSP70s (mtHSC70s) remain unclear. Severe growth defects were observed in the Arabidopsis thaliana mtHSC70-1 knockout lines, mthsc70-1a and mthsc70-1b. Conversely, the introduction of the mtHSC70-1 gene into the mthsc70-1a background fully reversed the phenotypes, indicating that mtHSC70-1 is essential for plant growth. The loss of mtHSC70-1 functions resulted in abnormal mitochondria and alterations to respiration because of an inhibition of the cytochrome c oxidase (COX) pathway and the activation of the alternative respiratory pathway. Defects in COX assembly were observed in the mtHSC70-1 knockout lines, leading to decreased COX activity. The mtHSC70-1 knockout plants have increased levels of reactive oxygen species (ROS). The introduction of the Mn-superoxide dismutase 1 (MSD1) or the catalase 1 (CAT1) gene into the mthsc70-1a plants decreased ROS levels, reduced the expression of alternative oxidase, and partially rescued growth. Taken together, our data suggest that mtHSC70-1 plays important roles in the establishment of COX-dependent respiration.
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Affiliation(s)
- Shan-Shan Wei
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Wei-Tao Niu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
- College of Biological Science and Engineering, Xingtai University, Xingtai, China
| | - Xiao-Ting Zhai
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Wei-Qian Liang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Meng Xu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Xiao Fan
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Ting-Ting Lv
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Wen-Yan Xu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Jiao-Teng Bai
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Ning Jia
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Bing Li
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Shijiazhuang, China
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Chen S, Qiu G, Yang M. SMRT sequencing of full-length transcriptome of seagrasses Zostera japonica. Sci Rep 2019; 9:14537. [PMID: 31601990 PMCID: PMC6787188 DOI: 10.1038/s41598-019-51176-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 09/25/2019] [Indexed: 11/20/2022] Open
Abstract
Seagrass meadows are among the four most productive marine ecosystems in the world. Zostera japonica (Z. japonica) is the most widely distributed species of seagrass in China. However, there is no reference genome or transcriptome available for Z. japonica, impeding progress in functional genomic and molecular ecology studies in this species. Temperature is the main factor that controls the distribution and growth of seagrass around the world, yet how seagrass responds to heat stress remains poorly understood due to the lack of genomic and transcriptomic data. In this study, we applied a combination of second- and third-generation sequencing technologies to sequence full-length transcriptomes of Z. japonica. In total, we obtained 58,134 uniform transcripts, which included 46,070 high-quality full-length transcript sequences. We identified 15,411 simple sequence repeats, 258 long non-coding RNAs and 28,038 open reading frames. Exposure to heat elicited a complex transcriptional response in genes involved in posttranslational modification, protein turnover and chaperones. Overall, our study provides the first large-scale full-length trascriptome in Zostera japonica, allowing for structural, functional and comparative genomics studies in this important seagrass species. Although previous studies have focused specifically on heat shock proteins, we found that examination of other heat stress related genes is important for studying response to heat stress in seagrass. This study provides a genetic resource for the discovery of genes related to heat stress tolerance in this species. Our transcriptome can be further utilized in future studies to understand the molecular adaptation to heat stress in Zostera japonica.
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Affiliation(s)
- Siting Chen
- Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, Guangxi, 536007, China.
| | - Guanglong Qiu
- Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, Guangxi, 536007, China
| | - Mingliu Yang
- Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, Guangxi, 536007, China
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Zhao D, Xia X, Su J, Wei M, Wu Y, Tao J. Overexpression of herbaceous peony HSP70 confers high temperature tolerance. BMC Genomics 2019; 20:70. [PMID: 30665351 PMCID: PMC6341652 DOI: 10.1186/s12864-019-5448-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/11/2019] [Indexed: 11/30/2022] Open
Abstract
Background Heat shock proteins (HSPs) are found extensively in Eukaryotes and are involved in stress tolerance. However, their functions in herbaceous peony (Paeonia lactiflora Pall.) under high temperature stress are poorly characterized. Results In this study, the genomic sequence of P. lactiflora HSP70, designated PlHSP70, was isolated. Its full-length was 3635 bp, and it contained a large 1440-bp intron. The encoded protein with a molecular weight of 71 kDa was localized in the cytoplasm of the cell. PlHSP70 transcription was detected in P. lactiflora and increased with the treatment of high temperature stress. The constitutive overexpression of PlHSP70 in Arabidopsis thaliana obviously conferred tolerance to high temperature stress by affecting different physiological and biochemical indices. Transgenic A. thaliana plants exhibited higher chlorophyll fluorescence values than the wild-type (WT) when exposed to high temperature stress. The accumulation of hydrogen peroxide (H2O2), superoxide anion free radical (O2·-) and relative electric conductivity (REC) were significantly lower in the transgenic A. thaliana plants compared to the WT. In addition, more intact cell membranes, chloroplasts and starch grains, and fewer plastoglobuli were found in the PlHSP70-overexpressing transgenic lines than in the WT. Conclusions All of these results indicated that PlHSP70 possessed the ability to improve the tolerance to high temperature in transgenic A. thaliana, which could provide a theoretical basis to improve high temperature tolerance of P. lactiflora by future genetic manipulation. Electronic supplementary material The online version of this article (10.1186/s12864-019-5448-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daqiu Zhao
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Xing Xia
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Jianghong Su
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Mengran Wei
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Yanqing Wu
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Jun Tao
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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Hinojosa L, González JA, Barrios-Masias FH, Fuentes F, Murphy KM. Quinoa Abiotic Stress Responses: A Review. PLANTS (BASEL, SWITZERLAND) 2018; 7:E106. [PMID: 30501077 PMCID: PMC6313892 DOI: 10.3390/plants7040106] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 02/07/2023]
Abstract
Quinoa (Chenopodium quinoa Willd.) is a genetically diverse Andean crop that has earned special attention worldwide due to its nutritional and health benefits and its ability to adapt to contrasting environments, including nutrient-poor and saline soils and drought stressed marginal agroecosystems. Drought and salinity are the abiotic stresses most studied in quinoa; however, studies of other important stress factors, such as heat, cold, heavy metals, and UV-B light irradiance, are severely limited. In the last few decades, the incidence of abiotic stress has been accentuated by the increase in unpredictable weather patterns. Furthermore, stresses habitually occur as combinations of two or more. The goals of this review are to: (1) provide an in-depth description of the existing knowledge of quinoa's tolerance to different abiotic stressors; (2) summarize quinoa's physiological responses to these stressors; and (3) describe novel advances in molecular tools that can aid our understanding of the mechanisms underlying quinoa's abiotic stress tolerance.
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Affiliation(s)
- Leonardo Hinojosa
- Sustainable Seed Systems Lab, Department of Crop and Soil Sciences, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA 99164-6420, USA.
- Facultad de Recursos Naturales, Escuela de Agrnomía, Escuela Superior Politecnica del Chimborazo, Riobamba 060106, Ecuador.
| | - Juan A González
- Fundación Miguel Lillo, Instituto de Ecología, Miguel Lillo, San Miguel de Tucumán Post 4000, Argentina.
| | - Felipe H Barrios-Masias
- Department of Agriculture, Veterinary and Rangeland Sciences, University of Nevada-Reno, Reno, NV 89557, USA.
| | - Francisco Fuentes
- Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Vicuña Mackenna, Macul, Santiago 4860, Chile.
| | - Kevin M Murphy
- Sustainable Seed Systems Lab, Department of Crop and Soil Sciences, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA 99164-6420, USA.
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Zhu X, Wang Y, Liu Y, Zhou W, Yan B, Yang J, Shen Y. Overexpression of BcHsfA1 transcription factor from Brassica campestris improved heat tolerance of transgenic tobacco. PLoS One 2018; 13:e0207277. [PMID: 30427910 PMCID: PMC6235349 DOI: 10.1371/journal.pone.0207277] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 10/29/2018] [Indexed: 01/31/2023] Open
Abstract
Heat shock proteins (HSPs) are a type of conserved molecular chaperone. They exist extensively in plants and greatly contribute to their survival under heat stress. The transcriptional regulation factor heat shock factor (HSF) is thought to regulate the expression of Hsps. In this study, a novel gene designated BcHsfA1 was cloned and characterized from Brassica campestris. Bioinformatic analysis implied that BcHsfA1 belongs to the HsfA gene family and is most closely related to HsfA1 from other plants. Constitutive overexpression of BcHsfA1 significantly improved heat tolerance of tobacco seedlings by affecting physiological and biochemical processes. Moreover, the chlorophyll content of transgenic tobacco plants was significantly increased compared with wild type after heat stress, as were the activities of the important enzymatic antioxidants superoxide dismutase and peroxidase. BcHsfA1 overexpression also resulted in decreased malondialdehyde content and comparative electrical conductivity and increased soluble sugar content in transgenic tobacco plants than wild-type plants exposed to heat stress. Furthermore, we identified 11 candidate heat response genes that were significantly up-regulated in the transgenic lines exposed to heat stress. Together, these results suggested that BcHsfA1 is effective in improving heat tolerance of tobacco seedlings, which may be useful in the development of new heat-resisitant B. campestris strains by genetic engineering.
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Affiliation(s)
- Xiangtao Zhu
- College of Jiyang, Zhejiang A&F University, Zhuji,China
| | - Yang Wang
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Yunhui Liu
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Wei Zhou
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Bin Yan
- Laboratory of Plant Biotechnology, College of Life and Environment Sciences, Shanghai Normal University, Shanghai,China
| | - Jian Yang
- Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Yafang Shen
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
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The Hsp70 Gene Family in Solanum tuberosum: Genome-Wide Identification, Phylogeny, and Expression Patterns. Sci Rep 2018; 8:16628. [PMID: 30413778 PMCID: PMC6226454 DOI: 10.1038/s41598-018-34878-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/28/2018] [Indexed: 11/08/2022] Open
Abstract
Heat shock protein 70 (Hsp70) family members play important roles in protecting plants against abiotic stresses, including salt, drought, heat, and cold. In this study, 20 putative StHsp70 genes were identified in potato (Solanum tuberosum L.) through the integration of the gene structures, chromosome locations, phylogenetic relationships, and expression profiles. These StHsp70 genes were classified into five sub-families based on phylogenetic analysis. Chromosome mapping revealed that they were unevenly and unequally distributed on 10 of the 12 chromosomes. Furthermore, segmental and tandem duplication events contributed to the expansion of the StHsp70 genes. Phylogenetic tree of the HSP70 genes from potato and other plant species revealed multiple sub-families. These findings indicated a common ancestor which had generated diverse sub-families prior to a mono-dicot split. In addition, expression analysis using RNA-seq revealed that the majority of these genes were expressed in at least one of the tested tissue, and were induced by Phytophthora infestans. Then, based on qRT-PCR analysis, the results showed that the transcript levels of some of the StHsp70 genes could be remarkably induced by such abiotic and hormone stresses, which indicated their potential roles in mediating the responses of potato plants to both abiotic and biotic stress conditions.
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Ji Y, Chen P, Chen J, Pennerman KK, Liang X, Yan H, Zhou S, Feng G, Wang C, Yin G, Zhang X, Hu Y, Huang L. Combinations of Small RNA, RNA, and Degradome Sequencing Uncovers the Expression Pattern of microRNA⁻mRNA Pairs Adapting to Drought Stress in Leaf and Root of Dactylis glomerata L. Int J Mol Sci 2018; 19:E3114. [PMID: 30314311 PMCID: PMC6213654 DOI: 10.3390/ijms19103114] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/05/2018] [Accepted: 10/08/2018] [Indexed: 11/17/2022] Open
Abstract
Drought stress is a global problem, and the lack of water is a key factor that leads to agricultural shortages. MicroRNAs play a crucial role in the plant drought stress response; however, the microRNAs and their targets involved in drought response have not been well elucidated. In the present study, we used Illumina platform (https://www.illumina.com/) and combined data from miRNA, RNA, and degradome sequencing to explore the drought- and organ-specific miRNAs in orchardgrass (Dactylis glomerata L.) leaf and root. We aimed to find potential miRNA⁻mRNA regulation patterns responding to drought conditions. In total, 519 (486 conserved and 33 novel) miRNAs were identified, of which, 41 miRNAs had significant differential expression among the comparisons (p < 0.05). We also identified 55,366 unigenes by RNA-Seq, where 12,535 unigenes were differently expressed. Finally, our degradome analysis revealed that 5950 transcripts were targeted by 487 miRNAs. A correlation analysis identified that miRNA ata-miR164c-3p and its target heat shock protein family A (HSP70) member 5 gene comp59407_c0 (BIPE3) may be essential in organ-specific plant drought stress response and/or adaptation in orchardgrass. Additionally, Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) analyses found that "antigen processing and presentation" was the most enriched downregulated pathway in adaptation to drought conditions. Taken together, we explored the genes and miRNAs that may be involved in drought adaptation of orchardgrass and identified how they may be regulated. These results serve as a valuable genetic resource for future studies focusing on how plants adapted to drought conditions.
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Affiliation(s)
- Yang Ji
- Sichuan Animal Science Academy, Chengdu 610066, China.
| | - Peilin Chen
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Jing Chen
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Kayla K Pennerman
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA.
| | - Xiaoyu Liang
- Sichuan Animal Science Academy, Chengdu 610066, China.
| | - Haidong Yan
- Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Sifan Zhou
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Guangyan Feng
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Chengran Wang
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Guohua Yin
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA.
| | - Xinquan Zhang
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yuanbin Hu
- Sichuan Animal Science Academy, Chengdu 610066, China.
| | - Linkai Huang
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
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Li LQ, Liu L, Zhuo W, Chen Q, Hu S, Peng S, Wang XY, Lu YF, Lu LM. Physiological and quantitative proteomic analyses unraveling potassium deficiency stress response in alligator weed (Alternanthera philoxeroides L.) root. PLANT MOLECULAR BIOLOGY 2018; 97:265-278. [PMID: 29777486 DOI: 10.1007/s11103-018-0738-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
Physiological and iTRAQ based proteomic analysis provided new insights into potassium deficiency stress response in alligator weed root. Alligator weed (Alternanthera philoxeroides) has a strong ability to adapt to potassium deficiency (LK) stress. Proteomic changes in response to this stress are largely unknown in alligator weed. In this study, we investigated physiological and molecular mechanisms under LK using isobaric tags for relative and absolute quantitation to characterize proteome-level changes in this plant. First, root physiology, 2, 3, 5-Triphenyl-trazolium chloride (TTC) assay and peroxidase activity were significantly altered after 10 and 15 days of LK treatment. The comparative proteomic analysis suggested a total of 375 proteins were differential abundance proteins. The proteomic results were verified by western blot assays and quantitative real-time PCR. Correlation analysis of transcription and proteomics suggested protein processing in the endoplasmic reticulum, endocytosis, and spliceosome pathways were significantly enriched. The protein responsible for energy metabolism, signal sensing and transduction and protein degradation played crucial roles in this stress. Twelve ubiquitin pathway related proteins were identified in our study, among them 11 proteins were up-regulated. All protein ubiquitination of lysine using pan antibodies were also increased after LK treatment. Our study provide a valuable insights of molecular mechanism underlying LK stress response in alligator weed roots and afford a vital basis to further study potassium nutrition molecular breeding of other plant species.
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Affiliation(s)
- Li-Qin Li
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Lun Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei Zhuo
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qian Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Sheng Hu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shuang Peng
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xi-Yao Wang
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yi-Fei Lu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Li-Ming Lu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China.
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Trapero‐Mozos A, Morris WL, Ducreux LJM, McLean K, Stephens J, Torrance L, Bryan GJ, Hancock RD, Taylor MA. Engineering heat tolerance in potato by temperature-dependent expression of a specific allele of HEAT-SHOCK COGNATE 70. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:197-207. [PMID: 28509353 PMCID: PMC5785350 DOI: 10.1111/pbi.12760] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/03/2017] [Accepted: 05/11/2017] [Indexed: 05/23/2023]
Abstract
For many commercial potato cultivars, tuber yield is optimal at average daytime temperatures in the range of 14-22 °C. Further rises in ambient temperature can reduce or completely inhibit potato tuber production, with damaging consequences for both producer and consumer. The aim of this study was to use a genetic screen based on a model tuberization assay to identify quantitative trait loci (QTL) associated with enhanced tuber yield. A candidate gene encoding HSc70 was identified within one of the three QTL intervals associated with elevated yield in a Phureja-Tuberosum hybrid diploid potato population (06H1). A particular HSc70 allelic variant was linked to elevated yield in the 06H1 progeny. Expression of this allelic variant was much higher than other alleles, particularly on exposure to moderately elevated temperature. Transient expression of this allele in Nicotiana benthamiana resulted in significantly enhanced tolerance to elevated temperature. An TA repeat element was present in the promoter of this allele, but not in other HSc70 alleles identified in the population. Expression of the HSc70 allelic variant under its native promoter in the potato cultivar Desiree resulted in enhanced HSc70 expression at elevated temperature. This was reflected in greater tolerance to heat stress as determined by improved yield under moderately elevated temperature in a model nodal cutting tuberization system and in plants grown from stem cuttings. Our results identify HSc70 expression level as a significant factor influencing yield stability under moderately elevated temperature and identify specific allelic variants of HSc70 for the induction of thermotolerance via conventional introgression or molecular breeding approaches.
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Affiliation(s)
| | - Wayne L. Morris
- Cell and Molecular SciencesThe James Hutton InstituteDundeeUK
| | | | - Karen McLean
- Cell and Molecular SciencesThe James Hutton InstituteDundeeUK
| | | | - Lesley Torrance
- School of BiologyUniversity of St AndrewsSt AndrewsFifeUK
- Cell and Molecular SciencesThe James Hutton InstituteDundeeUK
| | - Glenn J. Bryan
- Cell and Molecular SciencesThe James Hutton InstituteDundeeUK
| | | | - Mark A. Taylor
- Cell and Molecular SciencesThe James Hutton InstituteDundeeUK
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Usman MG, Rafii MY, Martini MY, Yusuff OA, Ismail MR, Miah G. Molecular analysis of Hsp70 mechanisms in plants and their function in response to stress. Biotechnol Genet Eng Rev 2017. [PMID: 28649918 DOI: 10.1080/02648725.2017.1340546] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Studying the strategies of improving abiotic stress tolerance is quite imperative and research under this field will increase our understanding of response mechanisms to abiotic stress such as heat. The Hsp70 is an essential regulator of protein having the tendency to maintain internal cell stability like proper folding protein and breakdown of unfolded proteins. Hsp70 holds together protein substrates to help in movement, regulation, and prevent aggregation under physical and or chemical pressure. However, this review reports the molecular mechanism of heat shock protein 70 kDa (Hsp70) action and its structural and functional analysis, research progress on the interaction of Hsp70 with other proteins and their interaction mechanisms as well as the involvement of Hsp70 in abiotic stress responses as an adaptive defense mechanism.
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Affiliation(s)
- Magaji G Usman
- a Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Mohd Y Rafii
- a Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia , Serdang , Selangor , Malaysia.,b Department of Crop Science, Faculty of Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Mohammad Y Martini
- b Department of Crop Science, Faculty of Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Oladosu A Yusuff
- a Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Mohd R Ismail
- a Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia , Serdang , Selangor , Malaysia.,b Department of Crop Science, Faculty of Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Gous Miah
- a Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia , Serdang , Selangor , Malaysia
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Svoboda P, Janská A, Spiwok V, Prášil IT, Kosová K, Vítámvás P, Ovesná J. Global Scale Transcriptional Profiling of Two Contrasting Barley Genotypes Exposed to Moderate Drought Conditions: Contribution of Leaves and Crowns to Water Shortage Coping Strategies. FRONTIERS IN PLANT SCIENCE 2016; 7:1958. [PMID: 28083001 PMCID: PMC5187378 DOI: 10.3389/fpls.2016.01958] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 12/09/2016] [Indexed: 05/07/2023]
Abstract
Drought is a serious threat for sustainable agriculture. Barley represents a species well adapted to environmental stresses including drought. To elucidate the adaptive mechanism of barley on transcriptional level we evaluated transcriptomic changes of two contrasting barley cultivars upon drought using the microarray technique on the level of leaves and crowns. Using bioinformatic tools, differentially expressed genes in treated vs. non-treated plants were identified. Both genotypes revealed tissue dehydration under drought conditions as shown at water saturation deficit and osmotic potential data; however, dehydration was more severe in Amulet than in drought-resistant Tadmor under the same ambient conditions. Performed analysis showed that Amulet enhanced expression of genes related to active plant growth and development, while Tadmor regarding the stimulated genes revealed conservative, water saving strategy. Common reactions of both genotypes and tissues included an induction of genes encoding several stress-responsive signaling proteins, transcription factors as well as effector genes encoding proteins directly involved in stress acclimation. In leaf, tolerant cultivar effectively stimulated mainly the expression of genes encoding proteins and enzymes involved in protein folding, sulfur metabolism, ROS detoxification or lipid biosynthesis and transport. The crown specific reaction of tolerant cultivar was an enhanced expression of genes encoding proteins and enzymes involved in cell wall lignification, ABRE-dependent abscisic acid (ABA) signaling, nucleosome remodeling, along with genes for numerous jasmonate induced proteins.
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Affiliation(s)
- Pavel Svoboda
- Division of Crop Genetics and Breeding, Crop Research InstitutePrague, Czechia
| | - Anna Janská
- Faculty of Science, Charles University in PraguePrague, Czechia
| | - Vojtěch Spiwok
- Faculty of Food and Biochemical Technology, University of Chemistry and TechnologyPrague, Czechia
| | - Ilja T. Prášil
- Division of Crop Genetics and Breeding, Crop Research InstitutePrague, Czechia
| | - Klára Kosová
- Division of Crop Genetics and Breeding, Crop Research InstitutePrague, Czechia
| | - Pavel Vítámvás
- Division of Crop Genetics and Breeding, Crop Research InstitutePrague, Czechia
| | - Jaroslava Ovesná
- Division of Crop Genetics and Breeding, Crop Research InstitutePrague, Czechia
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Guo M, Liu JH, Ma X, Zhai YF, Gong ZH, Lu MH. Genome-wide analysis of the Hsp70 family genes in pepper (Capsicum annuum L.) and functional identification of CaHsp70-2 involvement in heat stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 252:246-256. [PMID: 27717461 DOI: 10.1016/j.plantsci.2016.07.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 05/24/2023]
Abstract
Hsp70s function as molecular chaperones and are encoded by a multi-gene family whose members play a crucial role in plant response to stress conditions, and in plant growth and development. Pepper (Capsicum annuum L.) is an important vegetable crop whose genome has been sequenced. Nonetheless, no overall analysis of the Hsp70 gene family is reported in this crop plant to date. To assess the functionality of Capsicum annuum Hsp70 (CaHsp70) genes, pepper genome database was analyzed in this research. A total of 21 CaHsp70 genes were identified and their characteristics were also described. The promoter and transcript expression analysis revealed that CaHsp70s were involved in pepper growth and development, and heat stress response. Ectopic expression of a cytosolic gene, CaHsp70-2, regulated expression of stress-related genes and conferred increased thermotolerance in transgenic Arabidopsis. Taken together, our results provide the basis for further studied to dissect CaHsp70s' function in response to heat stress as well as other environmental stresses.
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Affiliation(s)
- Meng Guo
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jin-Hong Liu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiao Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yu-Fei Zhai
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Ming-Hui Lu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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50
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Büyük İ, Inal B, Ilhan E, Tanriseven M, Aras S, Erayman M. Genome-wide identification of salinity responsive HSP70s in common bean. Mol Biol Rep 2016; 43:1251-1266. [PMID: 27558093 DOI: 10.1007/s11033-016-4057-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 08/13/2016] [Indexed: 11/28/2022]
Abstract
The present study is aimed to identify and characterize HSP70 (PvHSP70) genes in two different common bean cultivars under salt stress. For this purpose various in silico methods such as RNAseq data and qRT-PCR analysis were used. A total of 24 candidate PvHSP70 gene were identified. Except for chromosome 4 and 7, these candidate PvHSP70 genes were distributed on the remaining chromosomes. While the lowest number of PvHSP70 genes was determined on chromosomes 1, 3, 5, 7, 9, 10 and 11 (one HSP70 gene), the highest number of PvHSP70s was on chromosomes 6 and 8 (seven HSP70 genes each). Three genes; PvHSP70-5, -9, and -10 were found to have no-introns. In addition, four tandemly and six segmentally duplicated gene couples were detected. A total of 13 PvHSP70 genes were targeted by miRNAs of 44 plant species and the most targeted genes were PvHSP70-5 and -23. The expression profile of PvHSP70 genes based on publicly available RNA-seq data was identified and salt treated leaf tissue was found to have more gene expression levels compared to the root. qRT-PCR analysis showed that the transcript concentrations of upregulated PvHSP70 genes in leaves of Zulbiye (sensitive) were mostly higher than those of Yakutiye (resistant). The present study revealed that PvHSP70 genes might play an important role in salt stress response for common bean cultivars and variability between cultivars also suggests that these genes could be used as functional markers for salt tolerance in common bean.
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Affiliation(s)
- İlker Büyük
- Department of Biology, Faculty of Science, Ankara University, Ankara, Turkey.
| | - Behcet Inal
- Department of Agricultural Biotechnology, Faculty of Agriculture, Siirt University, Siirt, Turkey
| | - Emre Ilhan
- Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, Erzurum, Turkey
| | - Mehmet Tanriseven
- Department of Biology, Faculty of Science, Ankara University, Ankara, Turkey
| | - Sümer Aras
- Department of Biology, Faculty of Science, Ankara University, Ankara, Turkey
| | - Mustafa Erayman
- Department of Biology, Faculty of Science and Literature, Mustafa Kemal University, Antakya, Hatay, Turkey
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