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Gundaraniya SA, Ambalam PS, Budhwar R, Padhiyar SM, Tomar RS. Transcriptome analysis provides insights into the stress response in cultivated peanut (Arachis hypogaea L.) subjected to drought-stress. Mol Biol Rep 2023; 50:6691-6701. [PMID: 37378750 DOI: 10.1007/s11033-023-08563-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 05/31/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND Peanut (Arachis hypogaea L.) is one of the valuable oilseed crops grown in drought-prone areas worldwide. Drought severely limits peanut production and productivity significantly. METHOD AND RESULTS In order to decipher the drought tolerance mechanism in peanut under drought stress, RNA sequencing was performed in TAG - 24 (drought tolerant genotype) and JL-24 (drought susceptible genotype). Approximately 51 million raw reads were generated from four different libraries of two genotypes subjected to drought stress exerted by 20% PEG 6000 stress and control conditions, of which ~ 41 million (80.87%) filtered reads were mapped to the Arachis hypogaea L. reference genome. The transcriptome analysis detected 1,629 differentially expressed genes (DEGs), 186 genes encoding transcription factors (TFs) and 30,199 SSR among the identified DEGs. Among the differentially expressed TF encoding genes, the highest number of genes were WRKY followed by bZIP, C2H2, and MYB during drought stress. The comparative analysis between the two genotypes revealed that TAG-24 exhibits activation of certain key genes and transcriptional factors that are involved in essential biological processes. Specifically, TAG-24 showed activation of genes involved in the plant hormone signaling pathway such as PYL9, Auxin response receptor gene, and ABA. Additionally, genes related to water deprivation such as LEA protein and those involved in combating oxidative damage such as Glutathione reductase were also found to be activated in TAG-24. CONCLUSION This genome-wide transcription map, therefore, provides a valuable tool for future transcript profiling under drought stress and enriches the genetic resources available for this important oilseed crop.
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Affiliation(s)
- Srutiben A Gundaraniya
- Department of Biosciences, Saurashtra University Rajkot, Christ Campus, 360005, Vidya Niketan, Gujarat, India
| | - Padma S Ambalam
- Christ Campus, Saurashtra University, 360005, Vidya Niketan, Rajkot, Gujarat, India
| | - Roli Budhwar
- Bionivid Technology Private Limited, Bengaluru, Karnataka, India
| | - Shital M Padhiyar
- Department of Biotechnology and Biochemistry, Junagadh Agricultural University, 362001, Junagadh, Gujarat, India
| | - Rukam S Tomar
- Department of Biotechnology and Biochemistry, Junagadh Agricultural University, 362001, Junagadh, Gujarat, India.
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Liu X, Su L, Li L, Zhang Z, Li X, Liang Q, Li L. Transcriptome profiling reveals characteristics of hairy root and the role of AhGLK1 in response to drought stress and post-drought recovery in peanut. BMC Genomics 2023; 24:119. [PMID: 36927268 PMCID: PMC10018853 DOI: 10.1186/s12864-023-09219-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 03/01/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND HR (hairy root) has emerged as a valuable tissue for the rapid characterization of plant gene function and enzyme activity in vivo. AhGLK1 (Arachis hypogaea L. golden2-like 1) is known to play a role in post-drought recovery. However, it is unclear (a) whether HR has properties that are distinct from those of PR (primary root); and (b) which gene networks are regulated by AhGLK1 in response to drought stress and recovery in peanut. RESULTS We found that cells of the root tip cortex were larger in HR than in PR, while a total of 850 differentially expressed genes (DEGs) were identified in HR compared to PR. Eighty-eight of these DEGs, relating to chlorophyll and photosynthesis, were upregulated in HR. In addition, AhGLK1-OX (AhGLK1-overexpressing) HR showed a green phenotype, and had a higher relative water content than 35 S::eGFP (control) HR during drought stress. RNA-seq analysis showed that 74 DEGs involved both in the drought response and the post-drought recovery process were significantly enriched in the galactose metabolism pathway. GO terms enrichment analysis revealed that 59.19%, 29.79% and 17.02% of the DEGs mapped to the 'biological process' (BP), 'molecular function' (MF) and 'cellular component' (CC) domains, respectively. Furthermore, 20 DEGs involved in post-drought recovery were uniquely expressed in AhGLK1-OX HR and were significantly enriched in the porphyrin metabolism pathway. GO analysis showed that 42.42%, 30.30% and 27.28% of DEGs could be assigned to the BP, MF and CC domains, respectively. Transcription factors including bHLH and MYB family members may play a key role during drought stress and recovery. CONCLUSION Our data reveal that HR has some of the characteristics of leaves, indicating that HR is suitable for studying genes that are mainly expressed in leaves. The RNA-seq results are consistent with previous studies that show chlorophyll synthesis and photosynthesis to be critical for the role of AhGLK1 in improving post-drought recovery growth in peanut. These findings provide in-depth insights that will be of great utility for the exploration of candidate gene functions in relation to drought tolerance and/or post-drought recovery ability in peanut.
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Affiliation(s)
- Xing Liu
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, 519040, Zhuhai, China.,Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, 510631, Guangzhou, China
| | - Liangchen Su
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, 519040, Zhuhai, China
| | - Limei Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, 510631, Guangzhou, China
| | - Zhi Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, 510631, Guangzhou, China
| | - Xiaoyun Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, 510631, Guangzhou, China
| | - Qingjian Liang
- School of Fishery, Zhejiang Ocean University, 316022, Zhoushan, Zhejiang, China.
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, 510631, Guangzhou, China.
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Kapazoglou A, Gerakari M, Lazaridi E, Kleftogianni K, Sarri E, Tani E, Bebeli PJ. Crop Wild Relatives: A Valuable Source of Tolerance to Various Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12020328. [PMID: 36679041 PMCID: PMC9861506 DOI: 10.3390/plants12020328] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 05/27/2023]
Abstract
Global climate change is one of the major constraints limiting plant growth, production, and sustainability worldwide. Moreover, breeding efforts in the past years have focused on improving certain favorable crop traits, leading to genetic bottlenecks. The use of crop wild relatives (CWRs) to expand genetic diversity and improve crop adaptability seems to be a promising and sustainable approach for crop improvement in the context of the ongoing climate challenges. In this review, we present the progress that has been achieved towards CWRs exploitation for enhanced resilience against major abiotic stressors (e.g., water deficiency, increased salinity, and extreme temperatures) in crops of high nutritional and economic value, such as tomato, legumes, and several woody perennial crops. The advances in -omics technologies have facilitated the elucidation of the molecular mechanisms that may underlie abiotic stress tolerance. Comparative analyses of whole genome sequencing (WGS) and transcriptomic profiling (RNA-seq) data between crops and their wild relative counterparts have unraveled important information with respect to the molecular basis of tolerance to abiotic stressors. These studies have uncovered genomic regions, specific stress-responsive genes, gene networks, and biochemical pathways associated with resilience to adverse conditions, such as heat, cold, drought, and salinity, and provide useful tools for the development of molecular markers to be used in breeding programs. CWRs constitute a highly valuable resource of genetic diversity, and by exploiting the full potential of this extended allele pool, new traits conferring abiotic-stress tolerance may be introgressed into cultivated varieties leading to superior and resilient genotypes. Future breeding programs may greatly benefit from CWRs utilization for overcoming crop production challenges arising from extreme environmental conditions.
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Affiliation(s)
- Aliki Kapazoglou
- Institute of Olive Tree, Subtropical Crops and Viticulture (IOSV), Department of Vitis, Hellenic Agricultural Organization-Dimitra (ELGO-Dimitra), Sofokli Venizelou 1, Lykovrysi, 14123 Athens, Greece
| | - Maria Gerakari
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Efstathia Lazaridi
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Konstantina Kleftogianni
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Efi Sarri
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Eleni Tani
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Penelope J. Bebeli
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
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Cui M, Han S, Wang D, Haider MS, Guo J, Zhao Q, Du P, Sun Z, Qi F, Zheng Z, Huang B, Dong W, Li P, Zhang X. Gene Co-expression Network Analysis of the Comparative Transcriptome Identifies Hub Genes Associated With Resistance to Aspergillus flavus L. in Cultivated Peanut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2022; 13:899177. [PMID: 35812950 PMCID: PMC9264616 DOI: 10.3389/fpls.2022.899177] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/06/2022] [Indexed: 06/08/2023]
Abstract
Cultivated peanut (Arachis hypogaea L.), a cosmopolitan oil crop, is susceptible to a variety of pathogens, especially Aspergillus flavus L., which not only vastly reduce the quality of peanut products but also seriously threaten food safety for the contamination of aflatoxin. However, the key genes related to resistance to Aspergillus flavus L. in peanuts remain unclear. This study identifies hub genes positively associated with resistance to A. flavus in two genotypes by comparative transcriptome and weighted gene co-expression network analysis (WGCNA) method. Compared with susceptible genotype (Zhonghua 12, S), the rapid response to A. flavus and quick preparation for the translation of resistance-related genes in the resistant genotype (J-11, R) may be the drivers of its high resistance. WGCNA analysis revealed that 18 genes encoding pathogenesis-related proteins (PR10), 1-aminocyclopropane-1-carboxylate oxidase (ACO1), MAPK kinase, serine/threonine kinase (STK), pattern recognition receptors (PRRs), cytochrome P450, SNARE protein SYP121, pectinesterase, phosphatidylinositol transfer protein, and pentatricopeptide repeat (PPR) protein play major and active roles in peanut resistance to A. flavus. Collectively, this study provides new insight into resistance to A. flavus by employing WGCNA, and the identification of hub resistance-responsive genes may contribute to the development of resistant cultivars by molecular-assisted breeding.
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Affiliation(s)
- Mengjie Cui
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Suoyi Han
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Du Wang
- Key Laboratory of Detection for Mycotoxins, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | | | - Junjia Guo
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Qi Zhao
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
| | - Pei Du
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Ziqi Sun
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Feiyan Qi
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Zheng Zheng
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Bingyan Huang
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Wenzhao Dong
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
| | - Peiwu Li
- Key Laboratory of Detection for Mycotoxins, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | - Xinyou Zhang
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
- The Shennong Laboratory, Henan Academy of Crops Molecular Breeding, Henan Academy of Agricultural Science, Zhengzhou, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou, China
- Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou, China
- National Centre for Plant Breeding, Xinxiang, China
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Jayaprakash A, Roy A, Thanmalagan RR, Arunachalam A, Ptv L. Immune response gene coexpression network analysis of Arachis hypogaea infected with Aspergillus flavus. Genomics 2021; 113:2977-2988. [PMID: 34153499 DOI: 10.1016/j.ygeno.2021.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 02/07/2021] [Accepted: 06/16/2021] [Indexed: 01/21/2023]
Abstract
Aspergillus flavus (A. flavus) infection and aflatoxin contamination is a major bottleneck for peanut cultivation and value chain industry. In this study, a transcriptomic network study was conducted by retrieving publically available RNA-seq datasets of resistant and susceptible peanut varieties infected by A. flavus separately to understand the peanut defense mechanism against A. flavus. The gene expression analysis revealed differentially expressed genes (DEGs) in response to the different levels of infection and coexpression network of DEGs deciphered hub genes involved in the immune process in resistant and susceptible varieties. The interplay of resistance conferring genes and cell wall related genes was observed through functional enrichment analysis in response to pathogen infection and identified few key genes such as Protein P21, R genes, Pattern Recognition Receptor genes, Pectinesterases, Laccase and Thaumatin-like protein 1b as candidate genes in imparting immune response against A. flavus.
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Affiliation(s)
- Aiswarya Jayaprakash
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Abhijeet Roy
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Raja Rajeswary Thanmalagan
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Annamalai Arunachalam
- Postgraduate and Research Department of Botany, Arignar Anna Government Arts College, Villupuram, Tamil Nadu 605602, India
| | - Lakshmi Ptv
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India.
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6
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Wang X, Yang X, Feng Y, Dang P, Wang W, Graze R, Clevenger JP, Chu Y, Ozias-Akins P, Holbrook C, Chen C. Transcriptome Profile Reveals Drought-Induced Genes Preferentially Expressed in Response to Water Deficit in Cultivated Peanut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2021; 12:645291. [PMID: 33995444 PMCID: PMC8120000 DOI: 10.3389/fpls.2021.645291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/12/2021] [Indexed: 05/28/2023]
Abstract
Cultivated peanut (Arachis hypogaea) is one of the most widely grown food legumes in the world, being valued for its high protein and unsaturated oil contents. Drought stress is one of the major constraints that limit peanut production. This study's objective was to identify the drought-responsive genes preferentially expressed under drought stress in different peanut genotypes. To accomplish this, four genotypes (drought tolerant: C76-16 and 587; drought susceptible: Tifrunner and 506) subjected to drought stress in a rainout shelter experiment were examined. Transcriptome sequencing analysis identified that all four genotypes shared a total of 2,457 differentially expressed genes (DEGs). A total of 139 enriched gene ontology terms consisting of 86 biological processes and 53 molecular functions, with defense response, reproductive process, and signaling pathways, were significantly enriched in the common DEGs. In addition, 3,576 DEGs were identified only in drought-tolerant lines in which a total of 74 gene ontology terms were identified, including 55 biological processes and 19 molecular functions, mainly related to protein modification process, pollination, and metabolic process. These terms were also found in shared genes in four genotypes, indicating that tolerant lines adjusted more related genes to respond to drought. Forty-three significantly enriched Kyoto Encyclopedia of Genes and Genomes pathways were also identified, and the most enriched pathways were those processes involved in metabolic pathways, biosynthesis of secondary metabolites, plant circadian rhythm, phenylpropanoid biosynthesis, and starch and sucrose metabolism. This research expands our current understanding of the mechanisms that facilitate peanut drought tolerance and shed light on breeding advanced peanut lines to combat drought stress.
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Affiliation(s)
- Xu Wang
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, United States
| | - Xinlei Yang
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, United States
- State Key Laboratory of North China Crop Improvement and Regulation, Laboratory of Crop Germplasm Resources of Hebei, Hebei Agricultural University, Baoding, China
| | - Yucheng Feng
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, United States
| | - Phat Dang
- United States Department of Agriculture–Agricultural Research Service National Peanut Research Laboratory, Dawson, GA, United States
| | - Wenwen Wang
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, United States
| | - Rita Graze
- Department of Biology, Auburn University, Auburn, AL, United States
| | - Josh P. Clevenger
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, United States
| | - Ye Chu
- Center for Applied Genetic Technologies, University of Georgia, Tifton, GA, United States
| | - Peggy Ozias-Akins
- Center for Applied Genetic Technologies, University of Georgia, Tifton, GA, United States
| | - Corley Holbrook
- United States Department of Agriculture–Agricultural Research Service Crop Genetics and Breeding Research, Tifton, GA, United States
| | - Charles Chen
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, United States
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Identification of Differentially Expressed Drought-Responsive Genes in Guar [ Cyamopsis tetragonoloba (L.) Taub]. Int J Genomics 2020; 2020:4147615. [PMID: 33344629 PMCID: PMC7732403 DOI: 10.1155/2020/4147615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/20/2020] [Indexed: 11/17/2022] Open
Abstract
Drought remains one of the most serious environmental stresses because of the continuous reduction in soil moisture, which requires the improvement of crops with features such as drought tolerance. Guar [Cyamopsis tetragonoloba (L.) Taub], a forage and industrial crop, is a nonthirsty plant. However, the information on the transcriptome changes that occur under drought stress in guar is very limited; therefore, a gene expression analysis is necessary in this context. Here, we studied the differentially expressed genes (DEGs) in response to drought stress and their metabolic pathways. RNA-Seq via an expectation-maximization algorithm was used to estimate gene abundance. Subsequently, an Empirical Analysis of Digital Gene Expression Data in the R Bioconductor package was used to identify DEGs. Blast2GO, InterProScan, and the Kyoto Encyclopedia of Genes and Genomes were used to explore functional annotation, protein analysis, enzymes, and metabolic pathways. Transcription factors were identified using the PlantTFDB database. Our study identified 499 upregulated and 191 downregulated genes in response to drought stress. Of those, 32 upregulated and six downregulated genes were deemed as novel genes exclusive to guar. An aggregate of 137 protein families, 306 domains, 12 repeats, and two sites were upregulated. The proton-dependent oligopeptide transporter family and transferase, aquaporin transporter, calcium/calmodulin-dependent/calcium-dependent protein kinase, aspartic peptidase A1 family, UDP-glucuronosyl/UDP-glucosyltransferase, and major intrinsic protein were the most upregulated protein families. The upregulated unigenes were associated with 88 enzymes and 77 KEGG pathways. Finally, the MYB-related, MYB, and ERF transcription factor families were upregulated. These data may be useful for understanding the plant molecular response to drought stress.
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Liu X, Li L, Zhang B, Zeng L, Li L. AhHDA1-mediated AhGLK1 promoted chlorophyll synthesis and photosynthesis regulates recovery growth of peanut leaves after water stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 294:110461. [PMID: 32234234 DOI: 10.1016/j.plantsci.2020.110461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/04/2020] [Accepted: 02/24/2020] [Indexed: 06/11/2023]
Abstract
Peanut (Arachis hypogaea L.) is an important crop that is adversely affected by drought. Post-drought growth is essential for improving peanut productivity and quality. Previous studies demonstrated that AhGLK1 (Arachis hypogaea L. Golden2-like 1) activates the expression of AhPORA to stimulate chlorophyll biosynthesis, and that AhGLK1 physically interacts with AhHDA1 (Arachis hypogaea L. histone deacetylase 1). However, the roles of the AhGLK1/AhHDA1 interaction in post-drought recovery remain to be elucidated. Herein, we report that AhHDA1 binds to AhGLK1 promoter and alters histone deacetylation levels to inhibit AhGLK1 expression. RNA-seq confirms that chlorophyll synthesis and photosynthesis-related genes are induced in AhGLK1-overexpressing, but reduced in AhGLK1 RNAi hairy roots. Furthermore, ChIP-seq shows that AhCAB (Arachis hypogaea L. chlorophyll A/B binding protein) is a target of both AhHDA1 and AhGLK1. Transactivation assays reveal that AhGLK1 activates AhCAB expression, while AhHDA1 inhibits the effect of AhGLK1 on AhCAB and AhPORA transcription. ChIP-qPCR shows that AhHDA1 and AhGLK1 bind to the promoters of AhCAB and AhPORA to regulate their expression during water stress and recovery. We propose that AhHDA1 and AhGLK1 consist of an ON/OFF switch for AhCAB and AhPORA expression during water stress and recovery. AhGLK1 activates, whereas AhHDA1 suppresses the expression of AhCAB and AhPORA.
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Affiliation(s)
- Xing Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China; Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Limei Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Baihong Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Lidan Zeng
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China.
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9
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Li L, Hu B, Li X, Li L. Characterization of mTERF family in allotetraploid peanut and their expression levels in response to dehydration stress. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1825121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Limei Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou, Guangdong, PR China
| | - Bo Hu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou, Guangdong, PR China
| | - Xiaoyun Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou, Guangdong, PR China
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou, Guangdong, PR China
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10
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Long H, Zheng Z, Zhang Y, Xing P, Wan X, Zheng Y, Li L. An abscisic acid (ABA) homeostasis regulated by its production, catabolism and transport in peanut leaves in response to drought stress. PLoS One 2019; 14:e0213963. [PMID: 31242187 PMCID: PMC6594590 DOI: 10.1371/journal.pone.0213963] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/11/2019] [Indexed: 01/23/2023] Open
Abstract
ABA is an important messenger that acts as a signaling mediator for regulating the adaptive response of plants to drought stress. Two production pathways, de novo biosynthesis and hydrolysis of glucose-conjugated ABA by β-glucosidase (BG), increase cellular ABA levels in plants. ABA catabolism via hydroxylation by 8’-hydroxylase (CYP707A), or conjugation by uridine diphosphate glucosyltransferase (UGT), decreases cellular ABA levels. The transport of ABA through ATP-binding cassette (ABC)-containing transporter proteins, members of ABC transporter G family (ABCG), across plasma membrane (PM) is another important pathway to regulate cellular ABA levels. In this study, based on our previously constructed transcriptome of peanut leaves in response to drought stress, fourteen candidate genes involved in ABA production (including AhZEP, AhNCED1 and AhNCED3, AhABA2, AhAAO1 and AhAAO2, AhABA3, AhBG11 and AhBG24), catabolism (including AhCYP707A3, AhUGT71K1 and AhUGT73B4) and transport (including AhABCG22-1 and AhABCG22-2), were identified homologously and phylogenetically, and further analyzed at the transcriptional level by real-time RT-PCR, simultaneously determining ABA levels in peanut leaves in response to drought. The high sequence identity and very similar subcellular localization of the proteins deduced from 14 identified genes involved in ABA production, catabolism and transport with the reported corresponding enzymes in databases suggest their similar roles in regulating cellular ABA levels. The expression analysis showed that the transcripts of AhZEP, AhNCED1, AhAAO2 and AhABA3 instead of AhABA2, AhNCED3 and AhAAO1 in peanut leaves increased significantly in response to drought stress; and that the AhBG11 and AhBG24 mRNA levels were rapidly and significantly up-regulated, with a 4.83- and 4.58-fold increase, respectively at 2-h of drought stress. The genes involved in ABA catabolism AhCYP707A3, AhUGT71K1 instead of AhUGT73B4 were significantly induced in response to drought stress. The expression of two closely related peanut ABCG genes, AhABCG22.1 and AhABCG22.2, was significantly up-regulated in response to drought stress. The ABA levels rapidly began to accumulate within 2 h (a 56.6-fold increase) from the start of drought stress, and peaked at 10 h of the stress. The highly and rapidly stress up-regulated expressions of genes involved in ABA production and transport, particularly AhNCED1, AhBG11 and AhBG24, and AhABCG22.1 and AhABCG22.2, might contribute to the rapid ABA accumulation in peanut leaves in response to drought. In response to drought stress, ABA accumulation levels in peanut leaves agree well with the up-regulated expressions of ABA-producing genes (AhZEP, AhNCED1, AhAAO2, AhABA3, AhBG11 and AhBG24) and PM-localized ABA importer genes (AhABCG22-1 and AhABCG22-2), in spite of the simultaneously induced ABA catabolic genes (AhCYP707A3 and AhUGT71K1), although the induction of catabolic genes was much lower than that of biosynthetic gene (AhNCED1). This difference in induction kinetics of gene expression may define the significant accumulation of drought-induced ABA levels. These results suggest that ABA homeostasis in peanut leaves in response to drought maintained through a balance between the production, catabolism and transport, rather than simply by the biosynthesis.
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Affiliation(s)
- Haitao Long
- School of Life Sciences, South China Normal University, Guangzhou, China
| | - Zhao Zheng
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yajun Zhang
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Pengzhan Xing
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Xiaorong Wan
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- * E-mail: (XW); (LL)
| | - Yixiong Zheng
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Ling Li
- School of Life Sciences, South China Normal University, Guangzhou, China
- * E-mail: (XW); (LL)
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11
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Co-overexpression of AVP1 and OsSIZ1 in Arabidopsis substantially enhances plant tolerance to drought, salt, and heat stresses. Sci Rep 2019; 9:7642. [PMID: 31113977 PMCID: PMC6529626 DOI: 10.1038/s41598-019-44062-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/03/2019] [Indexed: 12/30/2022] Open
Abstract
Abiotic stresses such as water deficit, salt, and heat are major environmental factors that negatively affect plant growth, development, and productivity. Previous studies showed that overexpression of the Arabidopsis vacuolar H+-pyrophosphatase gene AVP1 increases salt and water deficit stress tolerance and overexpression of the rice SUMO E3 ligase gene OsSIZ1 improves heat and water deficit stress tolerance in transgenic plants. In this report, the effects of co-overexpression of AVP1 and OsSIZ1 in Arabidopsis on abiotic stress tolerance were studied. It was found that AVP1/OsSIZ1 co-overexpressing plants performed significantly better than AVP1-overexpressing plants and OsSIZ1-overexpressing plants, and produced 100% more seed than wild-type plants under single stress or multiple stress conditions. The increased stress tolerance in AVP1/OsSIZ1 co-overexpressing plants was substantially larger than the increased stress tolerance in AVP1-overexpressing plants and OsSIZ1-overexpressing plants under every abiotic stress condition tested. This research provides the proof-of-concept that crop yields might be substantially improved using this approach.
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Zhang H, Dong J, Zhao X, Zhang Y, Ren J, Xing L, Jiang C, Wang X, Wang J, Zhao S, Yu H. Research Progress in Membrane Lipid Metabolism and Molecular Mechanism in Peanut Cold Tolerance. FRONTIERS IN PLANT SCIENCE 2019; 10:838. [PMID: 31316538 PMCID: PMC6610330 DOI: 10.3389/fpls.2019.00838] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/12/2019] [Indexed: 05/18/2023]
Abstract
Early sowing has been extensively used in high-latitude areas to avoid drought stress during sowing; however, cold damage has become the key limiting factor of early sowing. To relieve cold stress, plants develop a series of physiological and biochemical changes and sophisticated molecular regulatory mechanisms. The biomembrane is the barrier that protects cells from injury as well as the primary place for sensing cold signals. Chilling tolerance is closely related to the composition, structure, and metabolic process of membrane lipids. This review focuses on membrane lipid metabolism and its molecular mechanism, as well as lipid signal transduction in peanut (Arachis hypogaea L.) under cold stress to build a foundation for explicating lipid metabolism regulation patterns and physiological and molecular response mechanisms during cold stress and to promote the genetic improvement of peanut cold tolerance.
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Affiliation(s)
- He Zhang
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Jiale Dong
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Xinhua Zhao
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Yumei Zhang
- College of Agronomy, Qingdao Agricultural University, Qingdao, China
| | - Jingyao Ren
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Liting Xing
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Chunji Jiang
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Xiaoguang Wang
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Jing Wang
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Shuli Zhao
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Haiqiu Yu
- Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang, China
- *Correspondence: Haiqiu Yu,
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Luo D, Wu Y, Liu J, Zhou Q, Liu W, Wang Y, Yang Q, Wang Z, Liu Z. Comparative Transcriptomic and Physiological Analyses of Medicago sativa L. Indicates that Multiple Regulatory Networks Are Activated during Continuous ABA Treatment. Int J Mol Sci 2018; 20:E47. [PMID: 30583536 PMCID: PMC6337461 DOI: 10.3390/ijms20010047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/18/2018] [Accepted: 12/20/2018] [Indexed: 12/18/2022] Open
Abstract
Alfalfa is the most extensively cultivated forage legume worldwide. However, the molecular mechanisms underlying alfalfa responses to exogenous abscisic acid (ABA) are still unknown. In this study, the first global transcriptome profiles of alfalfa roots under ABA treatments for 1, 3 and 12 h (three biological replicates for each time point, including the control group) were constructed using a BGISEQ-500 sequencing platform. A total of 50,742 isoforms with a mean length of 2541 bp were generated, and 4944 differentially expressed isoforms (DEIs) were identified after ABA deposition. Metabolic analyses revealed that these DEIs were involved in plant hormone signal transduction, transcriptional regulation, antioxidative defense and pathogen immunity. Notably, several well characterized hormone signaling pathways, for example, the core ABA signaling pathway, was activated, while salicylic acid, jasmonate and ethylene signaling pathways were mainly suppressed by exogenous ABA. Moreover, the physiological work showed that catalase and peroxidase activity and glutathione and proline content were increased after ABA deposition, which is in accordance with the dynamic transcript profiles of the relevant genes in antioxidative defense system. These results indicate that ABA has the potential to improve abiotic stress tolerance, but that it may negatively regulate pathogen resistance in alfalfa.
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Affiliation(s)
- Dong Luo
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Yuguo Wu
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Jie Liu
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Qiang Zhou
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Wenxian Liu
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Yanrong Wang
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
| | - Qingchuan Yang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100000, China.
| | - Zengyu Wang
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
- Core Research & Transformation, Noble Research Institute, Ardmore, OK 73401, USA.
| | - Zhipeng Liu
- The State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China.
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Fan L, Wang G, Hu W, Pantha P, Tran KN, Zhang H, An L, Dassanayake M, Qiu QS. Transcriptomic view of survival during early seedling growth of the extremophyte Haloxylon ammodendron. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:475-489. [PMID: 30292980 DOI: 10.1016/j.plaphy.2018.09.024] [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: 08/02/2018] [Revised: 09/08/2018] [Accepted: 09/18/2018] [Indexed: 05/27/2023]
Abstract
Seedling establishment in an extreme environment requires an integrated genomic and physiological response to survive multiple abiotic stresses. The extremophyte, Haloxylon ammodendron is a pioneer species capable of colonizing temperate desert sand dunes. We investigated the induced and basal transcriptomes in H. ammodendron under water-deficit stress during early seedling establishment. We find that not only drought-responsive genes, but multiple genes in pathways associated with salt, osmotic, cold, UV, and high-light stresses were induced, suggesting an altered regulatory stress response system. Additionally, H. ammodendron exhibited enhanced biotic stress tolerance by down-regulation of genes that were generally up-regulated during pathogen entry in susceptible plants. By comparing the H. ammodendron basal transcriptome to six closely related transcriptomes in Amaranthaceae, we detected enriched basal level transcripts in H. ammodendron that shows preadaptation to abiotic stress and pathogens. We found transcripts that were generally maintained at low levels and some induced only under abiotic stress in the stress-sensitive model, Arabidopsis thaliana to be highly expressed under basal conditions in the Amaranthaceae transcriptomes including H. ammodendron. H. ammodendron shows coordinated expression of genes that regulate stress tolerance and seedling development resource allocation to support survival against multiple stresses in a sand dune dominated temperate desert environment.
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Affiliation(s)
- Ligang Fan
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Guannan Wang
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Wei Hu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Pramod Pantha
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Kieu-Nga Tran
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Hua Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Lizhe An
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Maheshi Dassanayake
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA.
| | - Quan-Sheng Qiu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China.
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Zhang B, Su L, Hu B, Li L. Expression of AhDREB1, an AP2/ERF Transcription Factor Gene from Peanut, Is Affected by Histone Acetylation and Increases Abscisic Acid Sensitivity and Tolerance to Osmotic Stress in Arabidopsis. Int J Mol Sci 2018; 19:ijms19051441. [PMID: 29751673 PMCID: PMC5983730 DOI: 10.3390/ijms19051441] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/07/2018] [Accepted: 05/09/2018] [Indexed: 11/16/2022] Open
Abstract
Drought stress negatively affects plant growth and development. An increasing number of reports have revealed the involvement of APETALA2/Ethylene Responsive Factor (AP2/ERF) transcription factors (TFs) in biotic and abiotic stress regulation in plants. However, research on these TFs in the peanut plant (Arachis hypogaea) has been limited. Here, we isolated a full-length coding sequence (CDS) of the AP2/ERF family gene AhDREB1 from the peanut plant and showed that its expression was induced by Polyethylene Glycol (PEG) 6000 and exogenous abscisic acid (ABA) treatment. When overexpressed in Arabidopsis, AhDREB1 increased both ABA levels and ABA sensitivity, affected the ABA signaling pathway and increased the expression of downstream drought stress-related genes RD29A, P5CS1, P5CS2 and NCED1. These results demonstrate that AhDREB1 can improve tolerance to drought via the ABA-dependent pathway in Arabidopsis. In the peanut plant, the specific histone deacetylases (HDACs) inhibitor trichostatin A (TSA) promotes AhDREB1 transcription and the enrichment level of H3ac was increased in regions of the AhDREB1 gene during TSA and PEG treatment. In summary, histone acetylation can affect the expression of AhDREB1 under osmotic stress conditions, thereby improving plant drought resistance.
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Affiliation(s)
- Baihong Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Liangchen Su
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China.
| | - Bo Hu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
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16
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Zhao X, Li C, Wan S, Zhang T, Yan C, Shan S. Transcriptomic analysis and discovery of genes in the response of Arachis hypogaea to drought stress. Mol Biol Rep 2018; 45:119-131. [PMID: 29330721 DOI: 10.1007/s11033-018-4145-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 01/05/2018] [Indexed: 12/17/2022]
Abstract
The peanut (Arachis hypogaea) is an important crop species that is threatened by drought stress. The genome sequences of peanut, which was officially released in 2016, may help explain the molecular mechanisms that underlie drought tolerance in this species. We report here a gene expression profiling of A. hypogaea to gain a global view of its drought resistance. Using whole-transcriptome sequencing, we analysed differential gene expression in response to drought stress in the drought-resistant peanut cultivar J11. Pooled samples obtained at 6, 12, 18, 24, and 48 h were compared with control samples at 0 h. In total, 51,554 genes were found, including 49,289 known genes and 2265 unknown genes. We identified 224 differentially expressed transcription factors, 296,335 SNPs and 28,391 InDELs. In addition, we detected significant differences in the gene expression profiles of the treatment and control groups. After comparing the two groups, 4648 genes were identified. An in-depth analysis of the data revealed that a large number of genes were associated with drought stress, including transcription factors and genes involved in photosynthesis-antenna proteins, carbon metabolism and the citrate cycle. The results of this study provide insights into the diverse mechanisms that underlie the successful establishment of drought resistance in the peanut, thereby facilitating the identification of important genes in the peanut related to drought management. Transcriptome analysis based on RNA-Seq is a powerful approach for gene discovery and molecular marker development for this species.
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Affiliation(s)
- Xiaobo Zhao
- Laboratory of Genetics and Breeding, Shandong Peanut Research Institute, Qingdao, 266100, Shandong Province, People's Republic of China
| | - Chunjuan Li
- Laboratory of Genetics and Breeding, Shandong Peanut Research Institute, Qingdao, 266100, Shandong Province, People's Republic of China
| | - Shubo Wan
- Shandong Academy of Agricultural Sciences, Jinan, 250100, Shandong Province, People's Republic of China
| | - Tingting Zhang
- Laboratory of Genetics and Breeding, Shandong Peanut Research Institute, Qingdao, 266100, Shandong Province, People's Republic of China
| | - Caixia Yan
- Laboratory of Genetics and Breeding, Shandong Peanut Research Institute, Qingdao, 266100, Shandong Province, People's Republic of China
| | - Shihua Shan
- Laboratory of Genetics and Breeding, Shandong Peanut Research Institute, Qingdao, 266100, Shandong Province, People's Republic of China.
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17
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Transcriptome analysis and identification of induced genes in the response of Harmonia axyridis to cold hardiness. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2017; 22:78-89. [DOI: 10.1016/j.cbd.2017.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 01/18/2017] [Accepted: 01/27/2017] [Indexed: 11/22/2022]
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19
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Liu S, Su L, Liu S, Zeng X, Zheng D, Hong L, Li L. Agrobacterium rhizogenes-mediated transformation of Arachis hypogaea: an efficient tool for functional study of genes. BIOTECHNOL BIOTEC EQ 2016. [DOI: 10.1080/13102818.2016.1191972] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Shuai Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
| | - Liangchen Su
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
| | - Shuai Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
| | - Xiaojun Zeng
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
| | - Danmin Zheng
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
| | - Lan Hong
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering , Guangzhou, Guangdong, P.R. China
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University , Guangzhou, Guangdong, P.R. China
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Wang H, Lei Y, Wan L, Yan L, Lv J, Dai X, Ren X, Guo W, Jiang H, Liao B. Comparative transcript profiling of resistant and susceptible peanut post-harvest seeds in response to aflatoxin production by Aspergillus flavus. BMC PLANT BIOLOGY 2016; 16:54. [PMID: 26922489 PMCID: PMC4769821 DOI: 10.1186/s12870-016-0738-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 02/17/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND Aflatoxin contamination caused by Aspergillus flavus in peanut (Arachis hypogaea) including in pre- and post-harvest stages seriously affects industry development and human health. Even though resistance to aflatoxin production in post-harvest peanut has been identified, its molecular mechanism has been poorly understood. To understand the mechanism of peanut response to aflatoxin production by A. flavus, RNA-seq was used for global transcriptome profiling of post-harvest seed of resistant (Zhonghua 6) and susceptible (Zhonghua 12) peanut genotypes under the fungus infection and aflatoxin production stress. RESULT A total of 128.72 Gb of high-quality bases were generated and assembled into 128, 725 unigenes (average length 765 bp). About 62, 352 unigenes (48.43%) were annotated in the NCBI non-redundant protein sequences, NCBI non-redundant nucleotide sequences, Swiss-Prot, KEGG Ortholog, Protein family, Gene Ontology, or eukaryotic Ortholog Groups database and more than 93% of the unigenes were expressed in the samples. Among obtained 30, 143 differentially expressed unigenes (DEGs), 842 potential defense-related genes, including nucleotide binding site-leucine-rich repeat proteins, polygalacturonase inhibitor proteins, leucine-rich repeat receptor-like kinases, mitogen-activated protein kinase, transcription factors, ADP-ribosylation factors, pathogenesis-related proteins and crucial factors of other defense-related pathways, might contribute to peanut response to aflatoxin production. Notably, DEGs involved in phenylpropanoid-derived compounds biosynthetic pathway were induced to higher levels in the resistant genotype than in the susceptible one. Flavonoid, stilbenoid and phenylpropanoid biosynthesis pathways were enriched only in the resistant genotype. CONCLUSIONS This study provided the first comprehensive analysis of transcriptome of post-harvest peanut seeds in response to aflatoxin production, and would contribute to better understanding of molecular interaction between peanut and A. flavus. The data generated in this study would be a valuable resource for genetic and genomic studies on crops resistance to aflatoxin contamination.
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Affiliation(s)
- Houmiao Wang
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Yong Lei
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Liyun Wan
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Liying Yan
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Jianwei Lv
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Xiaofeng Dai
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Xiaoping Ren
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Wei Guo
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Huifang Jiang
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Boshou Liao
- Key Laboratory of Oil Crop Biology of the Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Chinese Academy of Agricultural Sciences-International Crop Research Institute for the Semi-Arid Tropics Joint Laboratory for Groundnut Aflatoxin Management, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
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Neller KCM, Klenov A, Hudak KA. The Pokeweed Leaf mRNA Transcriptome and Its Regulation by Jasmonic Acid. FRONTIERS IN PLANT SCIENCE 2016; 7:283. [PMID: 27014307 PMCID: PMC4792876 DOI: 10.3389/fpls.2016.00283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/22/2016] [Indexed: 05/16/2023]
Abstract
The American pokeweed plant, Phytolacca americana, is recognized for synthesizing pokeweed antiviral protein (PAP), a ribosome inactivating protein (RIP) that inhibits the replication of several plant and animal viruses. The plant is also a heavy metal accumulator with applications in soil remediation. However, little is known about pokeweed stress responses, as large-scale sequencing projects have not been performed for this species. Here, we sequenced the mRNA transcriptome of pokeweed in the presence and absence of jasmonic acid (JA), a hormone mediating plant defense. Trinity-based de novo assembly of mRNA from leaf tissue and BLASTx homology searches against public sequence databases resulted in the annotation of 59 096 transcripts. Differential expression analysis identified JA-responsive genes that may be involved in defense against pathogen infection and herbivory. We confirmed the existence of several PAP isoforms and cloned a potentially novel isoform of PAP. Expression analysis indicated that PAP isoforms are differentially responsive to JA, perhaps indicating specialized roles within the plant. Finally, we identified 52 305 natural antisense transcript pairs, four of which comprised PAP isoforms, suggesting a novel form of RIP gene regulation. This transcriptome-wide study of a Phytolaccaceae family member provides a source of new genes that may be involved in stress tolerance in this plant. The sequences generated in our study have been deposited in the SRA database under project # SRP069141.
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Zhang YW, Fan WW, Li H, Ni H, Han HB, Li HH. Simultaneous column chromatographic extraction and purification of abscisic acid in peanut plants for direct HPLC analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1002:277-84. [DOI: 10.1016/j.jchromb.2015.08.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 08/21/2015] [Accepted: 08/22/2015] [Indexed: 11/27/2022]
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Global Reprogramming of Transcription in Chinese Fir (Cunninghamia lanceolata) during Progressive Drought Stress and after Rewatering. Int J Mol Sci 2015; 16:15194-219. [PMID: 26154763 PMCID: PMC4519895 DOI: 10.3390/ijms160715194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 06/21/2015] [Accepted: 06/30/2015] [Indexed: 12/02/2022] Open
Abstract
Chinese fir (Cunninghamia lanceolata), an evergreen conifer, is the most commonly grown afforestation species in southeast China due to its rapid growth and good wood qualities. To gain a better understanding of the drought-signalling pathway and the molecular metabolic reactions involved in the drought response, we performed a genome-wide transcription analysis using RNA sequence data. In this study, Chinese fir plantlets were subjected to progressively prolonged drought stress, up to 15 d, followed by rewatering under controlled environmental conditions. Based on observed morphological changes, plantlets experienced mild, moderate, or severe water stress before rehydration. Transcriptome analysis of plantlets, representing control and mild, moderate, and severe drought-stress treatments, and the rewatered plantlets, identified several thousand genes whose expression was altered in response to drought stress. Many genes whose expression was tightly coupled to the levels of drought stress were identified, suggesting involvement in Chinese fir drought adaptation responses. These genes were associated with transcription factors, signal transport, stress kinases, phytohormone signalling, and defence/stress response. The present study provides the most comprehensive transcriptome resource and the first dynamic transcriptome profiles of Chinese fir under drought stress. The drought-responsive genes identified in this study could provide further information for understanding the mechanisms of drought tolerance in Chinese fir.
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Bosamia TC, Mishra GP, Thankappan R, Dobaria JR. Novel and Stress Relevant EST Derived SSR Markers Developed and Validated in Peanut. PLoS One 2015; 10:e0129127. [PMID: 26046991 PMCID: PMC4457858 DOI: 10.1371/journal.pone.0129127] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/04/2015] [Indexed: 11/18/2022] Open
Abstract
With the aim to increase the number of functional markers in resource poor crop like cultivated peanut (Arachis hypogaea), large numbers of available expressed sequence tags (ESTs) in the public databases, were employed for the development of novel EST derived simple sequence repeat (SSR) markers. From 16424 unigenes, 2784 (16.95%) SSRs containing unigenes having 3373 SSR motifs were identified. Of these, 2027 (72.81%) sequences were annotated and 4124 gene ontology terms were assigned. Among different SSR motif-classes, tri-nucleotide repeats (33.86%) were the most abundant followed by di-nucleotide repeats (27.51%) while AG/CT (20.7%) and AAG/CTT (13.25%) were the most abundant repeat-motifs. A total of 2456 EST-SSR novel primer pairs were designed, of which 366 unigenes having relevance to various stresses and other functions, were PCR validated using a set of 11 diverse peanut genotypes. Of these, 340 (92.62%) primer pairs yielded clear and scorable PCR products and 39 (10.66%) primer pairs exhibited polymorphisms. Overall, the number of alleles per marker ranged from 1-12 with an average of 3.77 and the PIC ranged from 0.028 to 0.375 with an average of 0.325. The identified EST-SSRs not only enriched the existing molecular markers kitty, but would also facilitate the targeted research in marker-trait association for various stresses, inter-specific studies and genetic diversity analysis in peanut.
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Affiliation(s)
- Tejas C. Bosamia
- Crop Improvement Division, ICAR- Directorate of Groundnut Research, Junagadh, Gujarat, 362001, India
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh, Gujarat, 362001,India
| | - Gyan P. Mishra
- Crop Improvement Division, ICAR- Directorate of Groundnut Research, Junagadh, Gujarat, 362001, India
| | - Radhakrishnan Thankappan
- Crop Improvement Division, ICAR- Directorate of Groundnut Research, Junagadh, Gujarat, 362001, India
| | - Jentilal R. Dobaria
- Crop Improvement Division, ICAR- Directorate of Groundnut Research, Junagadh, Gujarat, 362001, India
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Brasileiro ACM, Morgante CV, Araujo ACG, Leal-Bertioli SCM, Silva AK, Martins ACQ, Vinson CC, Santos CMR, Bonfim O, Togawa RC, Saraiva MAP, Bertioli DJ, Guimaraes PM. Transcriptome Profiling of Wild Arachis from Water-Limited Environments Uncovers Drought Tolerance Candidate Genes. PLANT MOLECULAR BIOLOGY REPORTER 2015; 33:1876-1892. [PMID: 26752807 PMCID: PMC4695501 DOI: 10.1007/s11105-015-0882-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Peanut (Arachis hypogaea L.) is an important legume cultivated mostly in drought-prone areas where its productivity can be limited by water scarcity. The development of more drought-tolerant varieties is, therefore, a priority for peanut breeding programs worldwide. In contrast to cultivated peanut, wild relatives have a broader genetic diversity and constitute a rich source of resistance/tolerance alleles to biotic and abiotic stresses. The present study takes advantage of this diversity to identify drought-responsive genes by analyzing the expression profile of two wild species, Arachis duranensis and Arachis magna (AA and BB genomes, respectively), in response to progressive water deficit in soil. Data analysis from leaves and roots of A. duranensis (454 sequencing) and A. magna (suppression subtractive hybridization (SSH)) stressed and control complementary DNA (cDNA) libraries revealed several differentially expressed genes in silico, and 44 of them were selected for further validation by quantitative RT-PCR (qRT-PCR). This allowed the identification of drought-responsive candidate genes, such as Expansin, Nitrilase, NAC, and bZIP transcription factors, displaying significant levels of differential expression during stress imposition in both species. This is the first report on identification of differentially expressed genes under drought stress and recovery in wild Arachis species. The generated transcriptome data, besides being a valuable resource for gene discovery, will allow the characterization of new alleles and development of molecular markers associated with drought responses in peanut. These together constitute important tools for the peanut breeding program and also contribute to a better comprehension of gene modulation in response to water deficit and rehydration.
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Affiliation(s)
- Ana C. M. Brasileiro
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Carolina V. Morgante
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
- />Embrapa Semiárido, Petrolina, PE Brazil
| | - Ana C. G. Araujo
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Soraya C. M. Leal-Bertioli
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Amanda K. Silva
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Andressa C. Q. Martins
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Christina C. Vinson
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Candice M. R. Santos
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
- />CONAB, Brasília, DF Brazil
| | - Orzenil Bonfim
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Roberto C. Togawa
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | - Mario A. P. Saraiva
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
| | | | - Patricia M. Guimaraes
- />Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, 02372 Final W5 Norte, Brasília, DF Brazil
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Su LC, Deng B, Liu S, Li LM, Hu B, Zhong YT, Li L. Isolation and characterization of an osmotic stress and ABA induced histone deacetylase in Arachis hygogaea. FRONTIERS IN PLANT SCIENCE 2015; 6:512. [PMID: 26217363 PMCID: PMC4499716 DOI: 10.3389/fpls.2015.00512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 06/25/2015] [Indexed: 05/18/2023]
Abstract
Histone acetylation, which together with histone methylation regulates gene activity in response to stress, is an important epigenetic modification. There is an increasing research focus on histone acetylation in crops, but there is no information to date in peanut (Arachis hypogaea). We showed that osmotic stress and ABA affect the acetylation of histone H3 loci in peanut seedlings by immunoblotting experiments. Using RNA-seq data for peanut, we found a RPD3/HDA1-like superfamily histone deacetylase (HDAC), termed AhHDA1, whose gene is up-regulated by PEG-induced water limitation and ABA signaling. We isolated and characterized AhHDA1 from A. hypogaea, showing that AhHDA1 is very similar to an Arabidopsis HDAC (AtHDA6) and, in recombinant form, possesses HDAC activity. To understand whether and how osmotic stress and ABA mediate the peanut stress response by epigenetics, the expression of AhHDA1 and stress-responsive genes following treatment with PEG, ABA, and the specific HDAC inhibitor trichostatin A (TSA) were analyzed. AhHDA1 transcript levels were enhanced by all three treatments, as was expression of peanut transcription factor genes, indicating that AhHDA1 might be involved in the epigenetic regulation of stress resistance genes that comprise the responses to osmotic stress and ABA.
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Affiliation(s)
| | | | | | | | | | | | - Ling Li
- *Correspondence: Ling Li, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, No. 55, Zhongshan Avenue West, Tianhe District, Guangzhou 510631, China
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