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Zhou S, Wu T, Li X, Wang S, Hu B. Identification of candidate genes controlling cold tolerance at the early seedling stage from Dongxiang wild rice by QTL mapping, BSA-Seq and RNA-Seq. BMC PLANT BIOLOGY 2024; 24:649. [PMID: 38977989 PMCID: PMC11232298 DOI: 10.1186/s12870-024-05369-x] [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: 10/23/2023] [Accepted: 07/01/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND The cold tolerance of rice is closely related to its production and geographic distribution. The identification of cold tolerance-related genes is of important significance for developing cold-tolerant rice. Dongxiang wild rice (Oryza rufipogon Griff.) (DXWR) is well-adapted to the cold climate of northernmost-latitude habitats ever found in the world, and is one of the most valuable rice germplasms for cold tolerance improvement. RESULTS Transcriptome analysis revealed genes differentially expressed between Xieqingzao B (XB; a cold sensitive variety) and 19H19 (derived from an interspecific cross between DXWR and XB) in the room temperature (RT), low temperature (LT), and recovery treatments. The results demonstrated that chloroplast genes might be involved in the regulation of cold tolerance in rice. A high-resolution SNP genetic map was constructed using 120 BC5F2 lines derived from a cross between 19H19 and XB based on the genotyping-by-sequencing (GBS) technique. Two quantitative trait loci (QTLs) for cold tolerance at the early seedling stage (CTS), qCTS12 and qCTS8, were detected. Moreover, a total of 112 candidate genes associated with cold tolerance were identified based on bulked segregant analysis sequencing (BSA-seq). These candidate genes were divided into eight functional categories, and the expression trend of candidate genes related to 'oxidation-reduction process' and 'response to stress' differed between XB and 19H19 in the RT, LT and recovery treatments. Among these candidate genes, the expression level of LOC_Os12g18729 in 19H19 (related to 'response to stress') decreased in the LT treatment but restored and enhanced during the recovery treatment whereas the expression level of LOC_Os12g18729 in XB declined during recovery treatment. Additionally, XB contained a 42-bp deletion in the third exon of LOC_Os12g18729, and the genotype of BC5F2 individuals with a survival percentage (SP) lower than 15% was consistent with that of XB. Weighted gene coexpression network analysis (WGCNA) and modular regulatory network learning with per gene information (MERLIN) algorithm revealed a gene interaction/coexpression network regulating cold tolerance in rice. In the network, differentially expressed genes (DEGs) related to 'oxidation-reduction process', 'response to stress' and 'protein phosphorylation' interacted with LOC_Os12g18729. Moreover, the knockout mutant of LOC_Os12g18729 decreased cold tolerance in early rice seedling stage signifcantly compared with that of wild type. CONCLUSIONS In general, study of the genetic basis of cold tolerance of rice is important for the development of cold-tolerant rice varieties. In the present study, QTL mapping, BSA-seq and RNA-seq were integrated to identify two CTS QTLs qCTS8 and qCTS12. Furthermore, qRT-PCR, genotype sequencing and knockout analysis indicated that LOC_Os12g18729 could be the candidate gene of qCTS12. These results are expected to further exploration of the genetic mechanism of CTS in rice and improve cold tolerance of cultivated rice by introducing the cold tolerant genes from DXWR through marker-assisted selection.
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Affiliation(s)
- Shiqi Zhou
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Qingyunpu District, Nanchang, 330000, China
| | - Ting Wu
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Qingyunpu District, Nanchang, 330000, China
| | - Xia Li
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Qingyunpu District, Nanchang, 330000, China
| | - Shilin Wang
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Qingyunpu District, Nanchang, 330000, China
| | - Biaolin Hu
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Qingyunpu District, Nanchang, 330000, China.
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Cai P, Lan Y, Gong F, Li C, Xia F, Li Y, Fang C. Comparative physiology and transcriptome response patterns in cold-tolerant and cold-sensitive varieties of Solanum melongena. BMC PLANT BIOLOGY 2024; 24:256. [PMID: 38594627 PMCID: PMC11003173 DOI: 10.1186/s12870-024-04922-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND Climate change has led to severe cold events, adversely impacting global crop production. Eggplant (Solanum melongena L.), a significant economic crop, is highly susceptible to cold damage, affecting both yield and quality. Unraveling the molecular mechanisms governing cold resistance, including the identification of key genes and comprehensive transcriptional regulatory pathways, is crucial for developing new varieties with enhanced tolerance. RESULTS In this study, we conducted a comparative analysis of leaf physiological indices and transcriptome sequencing results. The orthogonal partial least squares discriminant analysis (OPLS-DA) highlighted peroxidase (POD) activity and soluble protein as crucial physiological indicators for both varieties. RNA-seq data analysis revealed that a total of 7024 and 6209 differentially expressed genes (DEGs) were identified from variety "A" and variety "B", respectively. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment of DEGs demonstrated that the significant roles of starch and sucrose metabolism, glutathione metabolism, terpenoid synthesis, and energy metabolism (sucrose and starch metabolism) were the key pathways in eggplant. Weighted gene co-expression network analysis (WGCNA) shown that the enrichment of numerous cold-responsive genes, pathways, and soluble proteins in the MEgrep60 modules. Core hub genes identified in the co-expression network included POD, membrane transporter-related gene MDR1, abscisic acid-related genes, growth factor enrichment gene DELLA, core components of the biological clock PRR7, and five transcription factors. Among these, the core transcription factor MYB demonstrated co-expression with signal transduction, plant hormone, biosynthesis, and metabolism-related genes, suggesting a pivotal role in the cold response network. CONCLUSION This study integrates physiological indicators and transcriptomics to unveil the molecular mechanisms responsible for the differences in cold tolerance between the eggplant cold-tolerant variety "A" and the cold-sensitive variety "B". These mechanisms include modulation of reactive oxygen species (ROS), elevation in osmotic carbohydrate and free proline content, and the expression of terpenoid synthesis genes. This comprehensive understanding contributes valuable insights into the molecular underpinnings of cold stress tolerance, ultimately aiding in the improvement of crop cold tolerance.
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Affiliation(s)
- Peng Cai
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Yanhong Lan
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Fangyi Gong
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Chun Li
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Feng Xia
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Yifan Li
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China
| | - Chao Fang
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China.
- Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China.
- Sichuan Province Engineering Technology Research Center of Vegetables, Chengdu, 611934, China.
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Wang H, Jia Y, Bai X, Gong W, Liu G, Wang H, Xin J, Wu Y, Zheng H, Liu H, Wang J, Zou D, Zhao H. Whole-Transcriptome Profiling and Functional Prediction of Long Non-Coding RNAs Associated with Cold Tolerance in Japonica Rice Varieties. Int J Mol Sci 2024; 25:2310. [PMID: 38396991 PMCID: PMC10889138 DOI: 10.3390/ijms25042310] [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: 01/03/2024] [Revised: 02/07/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Low-temperature chilling is a major abiotic stress leading to reduced rice yield and is a significant environmental threat to food security. Low-temperature chilling studies have focused on physiological changes or coding genes. However, the competitive endogenous RNA mechanism in rice at low temperatures has not been reported. Therefore, in this study, antioxidant physiological indices were combined with whole-transcriptome data through weighted correlation network analysis, which found that the gene modules had the highest correlation with the key antioxidant enzymes superoxide dismutase and peroxidase. The hub genes of the superoxide dismutase-related module included the UDP-glucosyltransferase family protein, sesquiterpene synthase and indole-3-glycerophosphatase gene. The hub genes of the peroxidase-related module included the WRKY transcription factor, abscisic acid signal transduction pathway-related gene plasma membrane hydrogen-ATPase and receptor-like kinase. Therefore, we selected the modular hub genes and significantly enriched the metabolic pathway genes to construct the key competitive endogenous RNA networks, resulting in three competitive endogenous RNA networks of seven long non-coding RNAs regulating three co-expressed messenger RNAs via four microRNAs. Finally, the negative regulatory function of the WRKY transcription factor OsWRKY61 was determined via subcellular localization and validation of the physiological indices in the mutant.
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Affiliation(s)
| | - Yan Jia
- Correspondence: (Y.J.); (H.Z.)
| | | | | | | | | | | | | | | | | | | | | | - Hongwei Zhao
- Key Laboratory of Germplasm Enhancement and Physiology & Ecology of Food Crop in Cold Region, Ministry of Education/College of Agriculture, Northeast Agricultural University, Harbin 150030, China; (H.W.); (X.B.); (W.G.); (G.L.); (H.W.); (J.X.); (Y.W.); (H.Z.); (H.L.); (J.W.); (D.Z.)
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Fan Y, Li M, Wu Y, Wang X, Wang P, Zhang L, Meng X, Meng F, Li Y. Characterization of thioredoxin gene TaTrxh9 associated with heading-time regulation in wheat. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107903. [PMID: 37499575 DOI: 10.1016/j.plaphy.2023.107903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Thioredoxins (Trxs) are thiol-disulfide oxidoreductase proteins that play important roles in a spectrum of processes linking redox regulation and signaling in plants. However, little is known about Trxs and their biological functions in wheat, one of the most important food crops worldwide. This study reports the identification and functional characterization of an h-type Trx gene, TaTrxh9, in wheat. Three homoeologs of TaTrxh9 were identified and the sequences in the coding region were highly consistent among the homoeologs. Protein characterization showed that a conserved Trx_family domain, as well as a typical active site with a dithiol signature (WCGPC), was included in TaTrxh9. Structural modeling demonstrated that TaTrxh9 could fold into a canonical thioredoxin structure consisting of five-stranded antiparallel beta sheets sandwiched between four alpha helices. The insulin disulfide reduction assay demonstrated that TaTrxh9 was catalytically active in vitro. TaTrxh9 overexpression in the Arabidopsis mutant trxh9 complemented the abnormal growth phenotypes of the mutant, suggesting is functionality in vivo. The transcription level of TaTrxh9 was higher in leaf tissues and it was differentially expressed during the development of wheat plants. Interestingly, barley stripe mosaic virus-mediated suppression of TaTrxh9 shortened the seedling-heading period of wheat. Furthermore, CRISPR-Cas9 mediated gene knockout confirmed that the TaTrxh9 mutation resulted in early heading of wheat. To our knowledge, this study is the first to report that Trxh is associated with heading-time regulation, which lays a foundation for further exploring the biological function of TaTrxh9 and provides new ideas for molecular breeding focusing on early heading in wheat.
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Affiliation(s)
- Yadong Fan
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Mengyuan Li
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China; College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yujie Wu
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaoteng Wang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Putong Wang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Li Zhang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaodan Meng
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Fanrong Meng
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China; College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Yongchun Li
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China.
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5
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Yan T, Sun M, Su R, Wang X, Lu X, Xiao Y, Deng H, Liu X, Tang W, Zhang G. Transcriptomic Profiling of Cold Stress-Induced Differentially Expressed Genes in Seedling Stage of Indica Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:2675. [PMID: 37514289 PMCID: PMC10384097 DOI: 10.3390/plants12142675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/15/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023]
Abstract
Cold stress significantly constrains the growth, development, productivity, and distribution of rice, particularly the indica cultivar, known for its susceptibility to cold, limiting its cultivation to specific regions. This study investigated the genes associated with cold responsiveness in the roots of two indica cultivars, SQSL (cold-tolerant) and XZX45 (cold-susceptible), through transcriptome dynamics analysis during the seedling stage. The analysis identified 8144 and 6427 differentially expressed genes (DEGs) in XZX45 and SQSL, respectively. Among these DEGs, 4672 (G2) were shared by both cultivars, while 3472 DEGs (G1) were specific to XZX45, and 1755 DEGs (G3) were specific to SQSL. Additionally, 572 differentially expressed transcription factors (TFs) from 48 TF families, including WRKY, NAC, bHLH, ERF, bZIP, MYB, C2H2, and GRAS, were identified. Gene Ontology (GO) enrichment analysis revealed significant enrichment of DEGs in the G3 group, particularly in the "response to cold" category, highlighting the crucial role of these specific genes in response to cold stress in SQSL. Furthermore, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis indicated pronounced enrichment of DEGs in the G3 group in metabolic pathways such as "Pyruvate metabolism", "Glycolysis/Gluconeogenesis", and "Starch and sucrose metabolism", contributing to cold tolerance mechanisms in SQSL. Overall, this study provides comprehensive insights into the molecular mechanisms underlying cold responses in the indica cultivar, informing future genetic improvement strategies to enhance cold tolerance in susceptible indica rice cultivars.
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Affiliation(s)
- Tao Yan
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Meng Sun
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Rui Su
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Xiaozhong Wang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Xuedan Lu
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Yunhua Xiao
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Huabing Deng
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Xiong Liu
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
| | - Wenbang Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
- Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410128, China
- State Key Laboratory of Hybrid Rice, Changsha 410128, China
| | - Guilian Zhang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410128, China
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Usman B, Derakhshani B, Jung KH. Recent Molecular Aspects and Integrated Omics Strategies for Understanding the Abiotic Stress Tolerance of Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:2019. [PMID: 37653936 PMCID: PMC10221523 DOI: 10.3390/plants12102019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/11/2023] [Accepted: 05/17/2023] [Indexed: 09/02/2023]
Abstract
Rice is an important staple food crop for over half of the world's population. However, abiotic stresses seriously threaten rice yield improvement and sustainable production. Breeding and planting rice varieties with high environmental stress tolerance are the most cost-effective, safe, healthy, and environmentally friendly strategies. In-depth research on the molecular mechanism of rice plants in response to different stresses can provide an important theoretical basis for breeding rice varieties with higher stress resistance. This review presents the molecular mechanisms and the effects of various abiotic stresses on rice growth and development and explains the signal perception mode and transduction pathways. Meanwhile, the regulatory mechanisms of critical transcription factors in regulating gene expression and important downstream factors in coordinating stress tolerance are outlined. Finally, the utilization of omics approaches to retrieve hub genes and an outlook on future research are prospected, focusing on the regulatory mechanisms of multi-signaling network modules and sustainable rice production.
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Affiliation(s)
- Babar Usman
- Graduate School of Green Green-Bio Science and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (B.U.)
| | - Behnam Derakhshani
- Graduate School of Green Green-Bio Science and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (B.U.)
| | - Ki-Hong Jung
- Graduate School of Green Green-Bio Science and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (B.U.)
- Research Center for Plant Plasticity, Kyung Hee University, Yongin 17104, Republic of Korea
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7
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Tariq N, Yaseen M, Xu D, Rehman HM, Bibi M, Uzair M. Rice anther tapetum: a vital reproductive cell layer for sporopollenin biosynthesis and pollen exine patterning. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:233-245. [PMID: 36350096 DOI: 10.1111/plb.13485] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The tapetum is the innermost layer of the four layers of the rice anther that provides protection and essential nutrients to pollen grain development and delivers precursors for pollen exine formation. The tapetum has a key role in the normal development of pollen grains and tapetal programmed cell death (PCD) that is linked with sporopollenin biosynthesis and transport. Recently, many genes have been identified that are involved in tapetum formation in rice and Arabidopsis. Genetic mutation in PCD-associated genes could affect normal tapetal PCD, which finally leads to aborted pollen grains and male sterility in rice. In this review, we discuss the most recent research on rice tapetum development, including genomic, transcriptomic and proteomic studies. Furthermore, tapetal PCD, sporopollenin biosynthesis, ROS activity for tapetum function and its role in male reproductive development are discussed in detail. This will improve our understanding of the role of the tapetum in male fertility using rice as a model system, and provide information that can be applied in rice hybridization and that of other major crops.
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Affiliation(s)
- N Tariq
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
| | - M Yaseen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Institute of Rice Research, Sichuan Agricultural University, Sichuan, China
| | - D Xu
- School of Agronomy, Anhui Agricultural University, Hefei, China
| | - H M Rehman
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - M Bibi
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, Korea
| | - M Uzair
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, USA
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Ben Saad R, Ben Romdhane W, Baazaoui N, Bouteraa MT, Chouaibi Y, Mnif W, Ben Hsouna A, Kačániová M. Functional Characterization of Lobularia maritima LmTrxh2 Gene Involved in Cold Tolerance in Tobacco through Alleviation of ROS Damage to the Plasma Membrane. Int J Mol Sci 2023; 24:ijms24033030. [PMID: 36769352 PMCID: PMC9917683 DOI: 10.3390/ijms24033030] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
Cold stress is a key environmental factor affecting plant growth and development, crop productivity, and geographic distribution. Thioredoxins (Trxs) are small proteins that are ubiquitously expressed in all organisms and implicated in several cellular processes, including redox reactions. However, their role in the regulation of cold stress in the halophyte plant Lobularia maritima remains unknown. We recently showed that overexpression of LmTrxh2, which is the gene that encodes the h-type Trx protein previously isolated from L. maritima, led to an enhanced tolerance to salt and osmotic stress in transgenic tobacco. This study functionally characterized the LmTrxh2 gene via its overexpression in tobacco and explored its cold tolerance mechanisms. Results of the RT-qPCR and western blot analyses indicated differential temporal and spatial regulation of LmTrxh2 in L. maritima under cold stress at 4 °C. LmTrxh2 overexpression enhanced the cold tolerance of transgenic tobacco, as evidenced by increased germination rate, fresh weight and catalase (CAT), superoxide dismutase (SOD) and peroxidase (POD) activities; reduced malondialdehyde levels, membrane leakage, superoxide anion (O2-), and hydrogen peroxide (H2O2) levels; and higher retention of chlorophyll than in non-transgenic plants (NT). Furthermore, the transcript levels of reactive oxygen species (ROS)-related genes (NtSOD and NtCAT1), stress-responsive late embryogenis abundant protein 5 (NtLEA5), early response to dehydration 10C (NtERD10C), DRE-binding proteins 1A (NtDREB1A), and cold-responsive (COR) genes (NtCOR15A, NtCOR47, and NtKIN1) were upregulated in transgenic lines compared with those in NT plants under cold stress, indicating that LmTrxh2 conferred cold stress tolerance by enhancing the ROS scavenging ability of plants, thus enabling them to maintain membrane integrity. These results suggest that LmTrxh2 promotes cold tolerance in tobacco and provide new insight into the improvement of cold-stress resistance to cold stress in non-halophyte plants and crops.
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Affiliation(s)
- Rania Ben Saad
- Centre of Biotechnology of Sfax, Biotechnology and Plant Improvement Laboratory, University of Sfax, B.P “1177”, Sfax 3018, Tunisia
- Correspondence: (R.B.S.); (M.K.)
| | - Walid Ben Romdhane
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Narjes Baazaoui
- Biology Department, College of Sciences and Arts Muhayil Assir, King Khalid University, Abha 61421, Saudi Arabia
| | - Mohamed Taieb Bouteraa
- Centre of Biotechnology of Sfax, Biotechnology and Plant Improvement Laboratory, University of Sfax, B.P “1177”, Sfax 3018, Tunisia
| | - Yosra Chouaibi
- Centre of Biotechnology of Sfax, Biotechnology and Plant Improvement Laboratory, University of Sfax, B.P “1177”, Sfax 3018, Tunisia
| | - Wissem Mnif
- Department of Chemistry, Faculty of Sciences and Arts in Balgarn, University of Bisha, Bisha 61922, Saudi Arabia
| | - Anis Ben Hsouna
- Centre of Biotechnology of Sfax, Biotechnology and Plant Improvement Laboratory, University of Sfax, B.P “1177”, Sfax 3018, Tunisia
- Department of Environmental Sciences and Nutrition, Higher Institute of Applied Sciences and Technology of Mahdia, University of Monastir, Mahdia 5100, Tunisia
| | - Miroslava Kačániová
- Faculty of Horticulture, Institute of Horticulture, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
- Department of Bioenergy, Food Technology and Microbiology, Institute of Food Technology and Nutrition, University of Rzeszow, 4 Zelwerowicza St, 35601 Rzeszow, Poland
- Correspondence: (R.B.S.); (M.K.)
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Xu A, Wei N, Hu H, Zhou S, Huang Y, Kong Q, Bie Z, Nie WF, Cheng F. Thioredoxin h2 inhibits the MPKK5-MPK3 cascade to regulate the CBF-COR signaling pathway in Citrullus lanatus suffering chilling stress. HORTICULTURE RESEARCH 2023; 10:uhac256. [PMID: 36778181 PMCID: PMC9907054 DOI: 10.1093/hr/uhac256] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 11/13/2022] [Indexed: 06/12/2023]
Abstract
Thioredoxins (TRXs) are ubiquitous oxidoreductases and present as a multigenic family. TRXs determine the thiol redox balance, which is crucial for plants in the response to cold stress. However, limited knowledge is available about the role of TRXs in watermelon (Citrullus lanatus), which is highly sensitive to chilling stress in agricultural practice. Here, we identified 18 genes encoding 14 typical and 4 atypical TRXs from the watermelon genome, and found that ClTRX h2 localized at the plasma membrane was largely induced by chilling. Virus-induced gene silencing of ClTRX h2 resulted in watermelon plants that were more sensitive to chilling stress. We further found that ClTRX h2 physically interacted with mitogen-activated protein kinase kinase 5 (ClMPKK5), which was confirmed to phosphorylate and activate ClMPK3 in vitro, and the activation of ClMPK3 by ClMPKK5 was blocked by a point mutation of the Cys-229 residue to Ser in ClMPKK5. Additionally, ClTRX h2 inhibited the chilling-induced activation of ClMPK3, suggesting that the ClMPKK5-ClMPK3 cascade is regulated in a redox-dependent manner. We showed that ClMPK3-silenced plants had increased tolerance to chilling, as well as enhanced transcript abundances of the C-repeat/DREB binding factor (ClCBF) and cold-responsive (ClCOR) genes. Taken together, our results indicate that redox status mediated by ClTRX h2 inhibits ClMPK3 phosphorylation through the interaction between ClTRX h2 and ClMPKK5, which subsequently regulates the CBF-COR signaling pathway when submitted to chilling stress. Hence, our results provide a link between thiol redox balance and MAPK cascade signaling, revealing a conceptual framework to understand how TRX regulates chilling stress tolerance in watermelon.
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Affiliation(s)
- Anqi Xu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Nannan Wei
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Hao Hu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Shu Zhou
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuan Huang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiusheng Kong
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhilong Bie
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
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Li J, Feng B, Yu P, Fu W, Wang W, Lin J, Qin Y, Li H, Chen T, Xu C, Tao L, Wu Z, Fu G. Oligomeric Proanthocyanidins Confer Cold Tolerance in Rice through Maintaining Energy Homeostasis. Antioxidants (Basel) 2022; 12:antiox12010079. [PMID: 36670941 PMCID: PMC9854629 DOI: 10.3390/antiox12010079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Oligomeric proanthocyanidins (OPCs) are abundant polyphenols found in foods and botanicals that benefit human health, but our understanding of the functions of OPCs in rice plants is limited, particularly under cold stress. Two rice genotypes, named Zhongzao39 (ZZ39) and its recombinant inbred line RIL82, were subjected to cold stress. More damage was caused to RIL82 by cold stress than to ZZ39 plants. Transcriptome analysis suggested that OPCs were involved in regulating cold tolerance in the two genotypes. A greater increase in OPCs content was detected in ZZ39 than in RIL82 plants under cold stress compared to their respective controls. Exogenous OPCs alleviated cold damage of rice plants by increasing antioxidant capacity. ATPase activity was higher and poly (ADP-ribose) polymerase (PARP) activity was lower under cold stress in ZZ39 than in RIL82 plants. Importantly, improvements in cold tolerance were observed in plants treated with the OPCs and 3-aminobenzamide (PARP inhibitor, 3ab) combination compared to the seedling plants treated with H2O, OPCs, or 3ab alone. Therefore, OPCs increased ATPase activity and inhibited PARP activity to provide sufficient energy for rice seedling plants to develop antioxidant capacity against cold stress.
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Affiliation(s)
- Juncai Li
- Agronomy College, Jilin Agricultural University, Changchun 130118, China
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Baohua Feng
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Pinghui Yu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Weimeng Fu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Wenting Wang
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Jie Lin
- Agronomy College, Jilin Agricultural University, Changchun 130118, China
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Yebo Qin
- Zhejiang Agricultural Technology Extension Center, Hangzhou 310020, China
| | - Hubo Li
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Tingting Chen
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Chunmei Xu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Longxing Tao
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Zhihai Wu
- Agronomy College, Jilin Agricultural University, Changchun 130118, China
- Correspondence: (Z.W.); (G.F.)
| | - Guanfu Fu
- Agronomy College, Jilin Agricultural University, Changchun 130118, China
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
- Correspondence: (Z.W.); (G.F.)
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11
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Guo Z, Ma W, Cai L, Guo T, Liu H, Wang L, Liu J, Ma B, Feng Y, Liu C, Pan G. Comparison of anther transcriptomes in response to cold stress at the reproductive stage between susceptible and resistant Japonica rice varieties. BMC PLANT BIOLOGY 2022; 22:500. [PMID: 36284279 PMCID: PMC9597962 DOI: 10.1186/s12870-022-03873-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Rice is one of the most important cereal crops in the world but is susceptible to cold stress (CS). In this study, we carried out parallel transcriptomic analysis at the reproductive stage on the anthers of two Japonica rice varieties with contrasting CS resistance: cold susceptible Longjing11 (LJ11) and cold resistant Longjing25 (LJ25). RESULTS According to the obtained results, a total of 16,762 differentially expressed genes (DEGs) were identified under CS, including 7,050 and 14,531 DEGs in LJ25 and LJ11, respectively. Examining gene ontology (GO) enrichment identified 35 up- and 39 down-regulated biological process BP GO terms were significantly enriched in the two varieties, with 'response to heat' and 'response to cold' being the most enriched. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis identified 33 significantly enriched pathways. Only the carbon metabolism and amino acid biosynthesis pathways with down-regulated DEGs were enriched considerably in LJ11, while the plant hormone signal transduction pathway (containing 153 DEGs) was dramatically improved. Eight kinds of plant hormones were detected in the pathway, while auxin, abscisic acid (ABA), salicylic acid (SA), and ethylene (ETH) signaling pathways were found to be the top four pathways with the most DEGs. Furthermore, the protein-protein interaction (PPI) network analysis identified ten hub genes (co-expressed gene number ≥ 30), including six ABA-related genes. Various DEGs (such as OsDREB1A, OsICE1, OsMYB2, OsABF1, OsbZIP23, OsCATC, and so on) revealed distinct expression patterns among rice types when the DEGs between LJ11 and LJ25 were compared, indicating that they are likely responsible for CS resistance of rice in cold region. CONCLUSION Collectively, our findings provide comprehensive insights into complex molecular mechanisms of CS response and can aid in CS resistant molecular breeding of rice in cold regions.
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Affiliation(s)
- Zhenhua Guo
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, 510642, Guangzhou, Guangdong, China
| | - Wendong Ma
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
| | - Lijun Cai
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, 154007, Jiamusi, Heilongjiang, China.
| | - Tao Guo
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, 510642, Guangzhou, Guangdong, China
| | - Hao Liu
- Crops Research Institute, Guangdong Academy of Agricultural Sciences, 510640, Guangzhou, Guangdong, China
| | - Linan Wang
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
| | - Junliang Liu
- Jiamusi Longjing Seed Industry Co., LTD, 154026, Jiamusi, Heilongjiang, China
| | - Bo Ma
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, 161006, Qiqihar, Heilongjiang, China
| | - Yanjiang Feng
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
| | - Chuanxue Liu
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
| | - Guojun Pan
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
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12
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Khatab AA, Li J, Hu L, Yang J, Fan C, Wang L, Xie G. Global identification of quantitative trait loci and candidate genes for cold stress and chilling acclimation in rice through GWAS and RNA-seq. PLANTA 2022; 256:82. [PMID: 36103054 DOI: 10.1007/s00425-022-03995-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/08/2022] [Indexed: 06/15/2023]
Abstract
Associated analysis of GWAS with RNA-seq had detected candidate genes responsible for cold stress and chilling acclimation in rice. Haplotypes of two candidate genes and geographic distribution were analyzed. To explore new candidate genes and genetic resources for cold tolerance improvement in rice, genome-wide association study (GWAS) mapping experiments with 351 rice core germplasms was performed for three traits (survival rate, shoot length and chlorophyll content) under three temperature conditions (normal temperature, cold stress and chilling acclimation), yielding a total of 134 QTLs, of which 54, 59 and 21 QTLs were responsible for normal temperature, cold stress and chilling acclimation conditions, respectively. Integrated analysis of significant SNPs in 134 QTLs further identified 116 QTLs for three temperature treatments, 53, 43 and 18 QTLs responsible for normal temperature, cold stress and chilling acclimation, respectively, and 2 QTLs were responsible for both cold stress and chilling acclimation. Matching differentially expressed genes from RNA-seq to 43 and 18 QTLs for cold stress and chilling acclimation, we identified 69 and 44 trait-associated candidate genes, respectively, to be classified into six and five groups, particularly involved in metabolisms, reactive oxygen species scavenging and hormone signaling. Interestingly, two candidate genes LOC_Os01g04814, encoding a vacuolar protein sorting-associating protein 4B, and LOC_Os01g48440, encoding glycosyltransferase family 43 protein, showed the highest expression levels under chilling acclimation. Haplotype analysis revealed that both genes had a distinctive differentiation with subpopulation. Haplotypes of both genes with more japonica accessions have higher latitude distribution and higher chilling tolerance than the chilling sensitive indica accessions. These findings reveal the new insight into the molecular mechanism and candidate genes for cold stress and chilling acclimation in rice.
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Affiliation(s)
- Ahmed Adel Khatab
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jianguo Li
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Lihua Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
- College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Jiangyi Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
- College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Chuchuan Fan
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lingqiang Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China.
| | - Guosheng Xie
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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13
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Liu J, Meng Q, Xiang H, Shi F, Ma L, Li Y, Liu C, Liu Y, Su B. Genome-wide analysis of Dof transcription factors and their response to cold stress in rice (Oryza sativa L.). BMC Genomics 2021; 22:800. [PMID: 34742240 PMCID: PMC8572462 DOI: 10.1186/s12864-021-08104-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 10/19/2021] [Indexed: 11/18/2022] Open
Abstract
Background Rice (Oryza sativa L.) is a food crop for humans worldwide. However, temperature has an effect during the vegetative and reproductive stages. In high-latitude regions where rice is cultivated, cold stress is a major cause of yield loss and plant death. Research has identified a group of plant-specific transcription factors, DNA binding with one zinc fingers (DOFs), with a diverse range of functions, including stress signaling and stress response during plant growth. The aim of this study was to identify Dof genes in two rice subspecies, indica and japonica, and screen for Dof genes that may be involved in cold tolerance during plant growth. Results A total of 30 rice Dofs (OsDofs) were identified using bioinformatics and genome-wide analyses and phylogenetically analyzed. The 30 OsDOFs were classified into six subfamilies, and 24 motifs were identified based on protein sequence alignment. The chromosome locations of OsDofs were determined and nine gene duplication events were identified. A joint phylogenetic analysis was performed on DOF protein sequences obtained from four monocotyledon species to examine the evolutionary relationship of DOF proteins. Expression profiling of OsDofs from two japonica cultivars (Longdao5, which is cold-tolerant, and Longjing11, which is cold-sensitive) revealed that OsDof1 and OsDof19 are cold-inducible genes. We examined the seed setting rates in OsDof1- and OsDof19-overexpression and RNAi lines and found that OsDof1 showed a response to cold stress. Conclusions Our investigation identified OsDof1 as a potential target for genetic breeding of rice with enhanced cold tolerance. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08104-0.
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Affiliation(s)
- Jia Liu
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Qinglin Meng
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China.
| | - Hongtao Xiang
- Institute of Farming and Cultivation, Heilongjiang Academy of Agricultural Sciences, 150086, Harbin, China
| | - Fengmei Shi
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Ligong Ma
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Yichu Li
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Chunlai Liu
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Yu Liu
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Baohua Su
- Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Nangang District, 150086, Harbin, China
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Jeyasri R, Muthuramalingam P, Satish L, Pandian SK, Chen JT, Ahmar S, Wang X, Mora-Poblete F, Ramesh M. An Overview of Abiotic Stress in Cereal Crops: Negative Impacts, Regulation, Biotechnology and Integrated Omics. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10071472. [PMID: 34371676 PMCID: PMC8309266 DOI: 10.3390/plants10071472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 05/06/2023]
Abstract
Abiotic stresses (AbS), such as drought, salinity, and thermal stresses, could highly affect the growth and development of plants. For decades, researchers have attempted to unravel the mechanisms of AbS for enhancing the corresponding tolerance of plants, especially for crop production in agriculture. In the present communication, we summarized the significant factors (atmosphere, soil and water) of AbS, their regulations, and integrated omics in the most important cereal crops in the world, especially rice, wheat, sorghum, and maize. It has been suggested that using systems biology and advanced sequencing approaches in genomics could help solve the AbS response in cereals. An emphasis was given to holistic approaches such as, bioinformatics and functional omics, gene mining and agronomic traits, genome-wide association studies (GWAS), and transcription factors (TFs) family with respect to AbS. In addition, the development of omics studies has improved to address the identification of AbS responsive genes and it enables the interaction between signaling pathways, molecular insights, novel traits and their significance in cereal crops. This review compares AbS mechanisms to omics and bioinformatics resources to provide a comprehensive view of the mechanisms. Moreover, further studies are needed to obtain the information from the integrated omics databases to understand the AbS mechanisms for the development of large spectrum AbS-tolerant crop production.
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Affiliation(s)
- Rajendran Jeyasri
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India; (R.J.); (P.M.); (L.S.); (S.K.P.)
| | - Pandiyan Muthuramalingam
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India; (R.J.); (P.M.); (L.S.); (S.K.P.)
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - Lakkakula Satish
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India; (R.J.); (P.M.); (L.S.); (S.K.P.)
- Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Shunmugiah Karutha Pandian
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India; (R.J.); (P.M.); (L.S.); (S.K.P.)
| | - Jen-Tsung Chen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Sunny Ahmar
- Institute of Biological Sciences, University of Talca, 2 Norte 685, Talca 3460000, Chile;
| | - Xiukang Wang
- College of Life Sciences, Yan’an University, Yan’an 716000, China;
| | - Freddy Mora-Poblete
- Institute of Biological Sciences, University of Talca, 2 Norte 685, Talca 3460000, Chile;
- Correspondence: (F.M.-P.); (M.R.)
| | - Manikandan Ramesh
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India; (R.J.); (P.M.); (L.S.); (S.K.P.)
- Correspondence: (F.M.-P.); (M.R.)
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15
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Yang Y, Zheng C, Zhong C, Lu T, Gul J, Jin X, Zhang Y, Liu Q. Transcriptome analysis of Sonneratia caseolaris seedlings under chilling stress. PeerJ 2021; 9:e11506. [PMID: 34141477 PMCID: PMC8180195 DOI: 10.7717/peerj.11506] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/03/2021] [Indexed: 12/28/2022] Open
Abstract
Sonneratia caseolaris is a native mangrove species found in China. It is fast growing and highly adaptable for mangrove afforestation, but suffered great damage by chilling event once introduced to high latitude area. To understand the response mechanisms under chilling stress, physiological and transcriptomic analyses were conducted. The relative electrolyte conductivity, malondialdehyde (MDA) content, soluble sugar content and soluble protein content increased significantly under chilling stress. This indicated that S. caseolaris suffered great damage and increased the levels of osmoprotectants in response to the chilling stress. Gene expression comparison analysis of S. caseolaris leaves after 6 h of chilling stress was performed at the transcriptional scale using RNA-Seq. A total of 168,473 unigenes and 3,706 differentially expressed genes (DEGs) were identified. GO and KEGG enrichment analyses showed that the DEGs were mainly involved in carbohydrate metabolism, antioxidant enzyme, plant hormone signal transduction, and transcription factors (TFs). Sixteen genes associated with carbohydrate metabolism, antioxidant enzyme, phytohormones and TFs were selected for qRT-PCR verification, and they indicated that the transcriptome data were reliable. Our work provided a comprehensive review of the chilling response of S. caseolaris at both physiological and transcriptomic levels, which will prove useful for further studies on stress-responses in mangrove plants.
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Affiliation(s)
- Yong Yang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
| | - Chunfang Zheng
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang, China
| | - Cairong Zhong
- Hainan Academy of Forestry, Hainan Mangrove Research Institute, Haikou, Hainan, China
| | - Tianxi Lu
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
| | - Juma Gul
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
| | - Xiang Jin
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
| | - Ying Zhang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
| | - Qiang Liu
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, China
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16
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Viana VE, Carlos da Maia L, Busanello C, Pegoraro C, Costa de Oliveira A. When rice gets the chills: comparative transcriptome profiling at germination shows WRKY transcription factor responses. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23 Suppl 1:100-112. [PMID: 33773005 DOI: 10.1111/plb.13262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Rice is vital for food security. Due to its tropical origin, rice suffers from cold temperatures that affect its entire life cycle. Key genes have been identified involved in cold tolerance. WRKYs are generally downstream of the MAPK cascade and can act together with VQ proteins to regulate stress-responsive genes. Chilling treatment was applied at germination to two rice genotypes (tolerant and sensitive). Shoots at S3 stage were collected for RNA-seq to identify OsWRKY, OsMAPKs and OsVQs expression. Relationships among MAPKs, WRKYs and VQs were predicted through correlation analysis. OsWRKY transcriptional regulation was predicted by in silico analysis of cis-regulatory elements. A total of 39 OsWRKYs were differentially expressed. OsWRKY21, OsWRK24 and OsWRKY69 are potential positive regulators, while OsWRKY10, OsWRK47, OsWRKY62, OsWRKY72 and OsWRKY77 are potential negative regulators, of chilling tolerance. 12 OsMAPKs were differentially expressed. OsMAPKs were downregulated and negatively correlated with the upregulated OsWRKYs in the tolerant genotype. 19 OsVQs were differentially expressed, three and six OsVQs were positively correlated with OsWRKYs in the tolerant and sensitive genotypes, respectively. Seven differentially expressed OsWRKYs have cold-responsive elements in their promoters and five upregulated OsWRKYs in the tolerant genotype contained the W-box motif. Chilling causes changes in OsWRKY, OsMAPK and OsVQ gene expression at germination. OsWRKYs may not act downstream of the MAPK cascade to coordinate chilling tolerance, but OsWRKYs may act with VQs to regulate chilling tolerance. Candidate OsWRKYs are correlated and have a W-box in the promoter, suggesting an auto-regulation mechanism.
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Affiliation(s)
- V E Viana
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - L Carlos da Maia
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - C Busanello
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - C Pegoraro
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - A Costa de Oliveira
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
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17
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Boubakri H, Chihaoui SA, Najjar E, Gargouri M, Barhoumi F, Jebara M. Genome-wide analysis and expression profiling of H-type Trx family in Phaseolus vulgaris revealed distinctive isoforms associated with symbiotic N 2-fixing performance and abiotic stress response. JOURNAL OF PLANT PHYSIOLOGY 2021; 260:153410. [PMID: 33765508 DOI: 10.1016/j.jplph.2021.153410] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/27/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Thioredoxins (Trxs) are implicated in plant development and stress tolerance through redox regulation of target proteins. Trxs of Type h (Trxhs) constitute the largest and the most complicated cluster in the Trx family because of their unknown individual functions. Here, we identified and characterized the Phaseolus vulgaris Trxh family during development, mutualistic interactions and in response to abiotic stress. P. vulgaris (common bean) Trxh gene family (PvTrxh) encompasses 12 isoforms (PvTrxh1-h12), subdivided into 3 groups according to their amino acid sequence features. In silico RNA-seq -based expression analysis showed a differential expression of PvTrxh genes during development. RT-qPCR analysis of PvTrxh genes during nodule organogenesis revealed their highest expression in the nodule primordium (NP). Interestingly, in response to symbiosis, specific PvTrxh isoforms (PvTrxh3 and h5) were found to be highly upregulated compared to mock-inoculated plants. In addition, their expression patterns in the NP positively correlated with the symbiotic N2-fixing efficiency of the Rhizobium strain, as revealed by a number of symbiotic efficiency parameters (ARA, leghemoglobin content, biomass, and total soluble proteins), concomitantly with increased amounts of hydrogen peroxide (H2O2). On the other hand, distinctive PvTrxh isoforms were found to be upregulated in plant leaves, where H2O2 amounts were elevated, in response to both salt and drought constraints. When exogenously applied, H2O2 upregulated specific PvTrxh isoforms in plant leaves and roots. These findings point to a specific, rather than redundant, function for Trxh proteins in common bean beside the association of distinctive Trxh isoforms with symbiosis and abiotic stress response.
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Affiliation(s)
- Hatem Boubakri
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia.
| | - Saif-Allah Chihaoui
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia
| | - Eya Najjar
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia
| | - Mahmoud Gargouri
- Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia
| | - Fathi Barhoumi
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia
| | - Moez Jebara
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, 2050, Hammam-Lif, Tunisia
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18
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Shi B, Zhao X, Li M, Dong Z, Yang Q, Wang Y, Gao H, Day B, Ma Q. Wheat Thioredoxin ( TaTrxh1) Associates With RD19-Like Cysteine Protease TaCP1 to Defend Against Stripe Rust Fungus Through Modulation of Programmed Cell Death. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:426-438. [PMID: 33297713 DOI: 10.1094/mpmi-11-20-0304-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Thioredoxins (Trxs) function within the antioxidant network through modulation of one or more redox reactions involved in oxidative-stress signaling. Given their function in regulating cellular redox, Trx proteins also fulfill key roles in plant immune signaling. Here, TaTrxh1, encoding a subgroup h member of the Trx family, was identified and cloned in wheat (Triticum aestivum), which was rapidly induced by Puccinia striiformis f. sp. tritici invasion and salicylic acid (SA) treatment. Overexpression of TaTrxh1 in tobacco (Nicotiana benthamiana) induced programmed cell death. Silencing of TaTrxh1 in wheat enhanced susceptibility to P. striiformis f. sp. tritici in different aspects, including reactive oxygen species accumulation and pathogen-responsive or -related gene expression. Herein, we observed that the cellular concentration of SA was significantly reduced in TaTrxh1-silenced plants, indicating that TaTrxh1 possibly regulates wheat resistance to stripe rust through a SA-associated defense signaling pathway. Using a yeast two-hybrid screen to identify TaTrxh1-interacting partners, we further show that interaction with TaCP1 (a RD19-like cysteine protease) and subsequent silencing of TaCP1 reduced wheat resistance to P. striiformis f. sp. tritici. In total, the data presented herein demonstrate that TaTrxh1 enhances wheat resistance against P. striiformis f. sp. tritici via SA-dependent resistance signaling and that TaTrxh1 interaction with TaCP1 is required for wheat resistance to stripe rust.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Beibei Shi
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinbei Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
- Institute of Plant Protection, Henan Academy of Agricultural Sciences/Key Laboratory of IPM of Pests on Crop (Southern North China), Ministry of Agriculture, Key Laboratory of Crop Pest Control of Henan, Zhengzhou, Henan 450002, China
| | - Min Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zihui Dong
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qichao Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Haifeng Gao
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Urumqi, Xinjiang 830091, China
| | - Brad Day
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, U.S.A
- Plant Resilience Institute, Michigan State University, East Lansing, MI, U.S.A
| | - Qing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
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19
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Ponce KS, Guo L, Leng Y, Meng L, Ye G. Advances in Sensing, Response and Regulation Mechanism of Salt Tolerance in Rice. Int J Mol Sci 2021; 22:ijms22052254. [PMID: 33668247 PMCID: PMC7956267 DOI: 10.3390/ijms22052254] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/19/2021] [Accepted: 02/20/2021] [Indexed: 01/06/2023] Open
Abstract
Soil salinity is a serious menace in rice production threatening global food security. Rice responses to salt stress involve a series of biological processes, including antioxidation, osmoregulation or osmoprotection, and ion homeostasis, which are regulated by different genes. Understanding these adaptive mechanisms and the key genes involved are crucial in developing highly salt-tolerant cultivars. In this review, we discuss the molecular mechanisms of salt tolerance in rice—from sensing to transcriptional regulation of key genes—based on the current knowledge. Furthermore, we highlight the functionally validated salt-responsive genes in rice.
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Affiliation(s)
- Kimberly S. Ponce
- State Key Laboratory for Rice Biology, China National Rice Research Institute, Hangzhou 310006, China;
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou 225009, China
| | - Longbiao Guo
- State Key Laboratory for Rice Biology, China National Rice Research Institute, Hangzhou 310006, China;
- Correspondence: (Y.L.); (L.G.); Tel.: +86-514-8797-4757 (Y.L.); +86-571-6337-0136 (L.G.)
| | - Yujia Leng
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou 225009, China
- Correspondence: (Y.L.); (L.G.); Tel.: +86-514-8797-4757 (Y.L.); +86-571-6337-0136 (L.G.)
| | - Lijun Meng
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; (L.M.); (G.Y.)
| | - Guoyou Ye
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; (L.M.); (G.Y.)
- Strategic Innovation Platform, International Rice Research Institute, DAPO BOX 7777, Metro Manila 1301, Philippines
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20
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Mukherjee S. Cysteine modifications (oxPTM) and protein sulphenylation-mediated sulfenome expression in plants: evolutionary conserved signaling networks? PLANT SIGNALING & BEHAVIOR 2021; 16:1831792. [PMID: 33300450 PMCID: PMC7781837 DOI: 10.1080/15592324.2020.1831792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Plant resilience to oxidative stress possibly operates through the restoration of intracellular redox milieu and the activity of various posttranslationally modified proteins. Among various modes of redox regulation operative in plants cys oxPTMs are brought about by the activity of reactive oxygen species (ROS), reactive nitrogen species (RNS), and hydrogen peroxide. Cysteine oxPTMs are capable of transducing ROS-mediated long-distance hormone signaling (ABA, JA, SA) in plants. S-sulphenylation is an intermediary modification en route to other oxidative states of cysteine. In silico analysis have revealed evolutionary conservation of certain S-sulphenylated proteins across human and plants. Further analysis of protein sulphenylation in plants should be extended to the functional follow-up studies followed by site-specific characterization and case-by-case validation of protein activity. The repertoire of physiological methods (fluorescent conjugates (dimedone) and yeast AP-1 (YAP1)-based genetic probes) in the recent past has been successful in the detection of sulphenylated proteins and other cysteine-based modifications in plants. In view of a better understanding of the sulfur-based redoxome it is necessary to update our timely progress on the methodological advancements for the detection of cysteine-based oxPTM. This substantiative information can extend our investigations on plant-environment interaction thus improving crop manipulation strategies. The simulation-based computational approach has emerged as a new method to determine the directive mechanism of cysteine oxidation in plants. Thus, sulfenome analysis in various plant systems might reflect as a pinnacle of plant redox biology in the future.
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Affiliation(s)
- Soumya Mukherjee
- Department of Botany, Jangipur College, University of Kalyani, West, Bengal, India
- CONTACT Soumya Mukherjee Department of Botany, Jangipur College, University of Kalyani, West, Bengal742213, India
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21
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He L, Li M, Qiu Z, Chen D, Zhang G, Wang X, Chen G, Hu J, Gao Z, Dong G, Ren D, Shen L, Zhang Q, Guo L, Qian Q, Zeng D, Zhu L. Primary leaf-type ferredoxin 1 participates in photosynthetic electron transport and carbon assimilation in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:44-58. [PMID: 32603511 DOI: 10.1111/tpj.14904] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 06/06/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Ferredoxins (Fds) play a crucial role in photosynthesis by regulating the distribution of electrons to downstream enzymes. Multiple Fd genes have been annotated in the Oryza sativa L. (rice) genome; however, their specific functions are not well understood. Here, we report the functional characterization of rice Fd1. Sequence alignment, phylogenetic analysis of seven rice Fd proteins and quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis showed that rice Fd1 is a primary leaf-type Fd. Electron transfer assays involving NADP+ and cytochrome c indicated that Fd1 can donate electrons from photosystem I (PSI) to ferredoxin-NADP+ reductase. Loss-of-function fd1 mutants showed chlorosis and seedling lethality at the three-leaf stage. The deficiency of Fd1 impaired photosynthetic electron transport, which affected carbon assimilation. Exogenous glucose treatment partially restored the mutant phenotype, suggesting that Fd1 plays an important role in photosynthetic electron transport in rice. In addition, the transcript levels of Fd-dependent genes were affected in fd1 mutants, and the trend was similar to that observed in fdc2 plants. Together, these results suggest that OsFd1 is the primary Fd in photosynthetic electron transport and carbon assimilation in rice.
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Affiliation(s)
- Lei He
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Man Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Zhennan Qiu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
- College of Life Science, Dezhou University, Dezhou, 253023, China
| | - Dongdong Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Guangheng Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Xiaoqi Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Guang Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Jiang Hu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Zhenyu Gao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Guojun Dong
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Deyong Ren
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Lan Shen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Qiang Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Longbiao Guo
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Qian Qian
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Dali Zeng
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Li Zhu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
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22
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Dong W, Ma X, Jiang H, Zhao C, Ma H. Physiological and transcriptome analysis of Poa pratensis var. anceps cv. Qinghai in response to cold stress. BMC PLANT BIOLOGY 2020; 20:362. [PMID: 32736517 PMCID: PMC7393922 DOI: 10.1186/s12870-020-02559-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/19/2020] [Indexed: 05/03/2023]
Abstract
BACKGROUND Low temperature limits the growth and development and geographical distribution of plants. Poa pratensis is a cool-season turfgrass mainly grown in urban areas. However, low winter temperature or cold events in spring and autumn may cause P.pratensis mortality, affecting the appearance of lawns. P.pratensis var. anceps cv. Qinghai (PQ) is widely distributed in the Qinghai-Tibet Plateau above 3000 m. PQ has greater cold tolerance than the commercially cultivated P.pratensis varieties. However, existing studies on the response mechanism of PQ to low temperatures have mainly focused on physiological and biochemical perspectives, while changes in the PQ transcriptome during the response to cold stress have not been reported. RESULTS To investigate the molecular mechanism of the PQ cold response and identify genes to improve the low-temperature tolerance of P.pratensis, we analyzed and compared the transcriptomes of PQ and the cold-sensitive P.pratensis cv. 'Baron' (PB) under cold stress using RNA sequencing. We identified 5996 and 3285 differentially expressed genes (DEGs) between the treatment vs control comparison of PQ and PB, respectively, with 5612 DEGs specific to PQ. Based on the DEGs, important Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, such as "starch and sucrose metabolism", "protein processing in endoplasmic reticulum", "phenylalanine metabolism" and "glycolysis/gluconeogenesis" were significantly enriched in PQ, and "starch and sucrose metabolism", "phenylpropanoid biosynthesis", "galactose metabolism" and "glutathione metabolism" were significantly enriched in PB. In addition, the "glycolysis" and "citrate cycle (TCA cycle)" pathways were identified as involved in cold tolerance of P.pratensis. CONCLUSIONS As we know, this is the first study to explore the transcriptome of P.pratensis var. anceps cv. Qinghai. Our study not noly provides important insights into the molecular mechanisms of P.pratensis var. anceps cv. Qinghai responds to cold stress, but also systematically reveals the changes of key genes and products of glycolysis and TCA cycle in response to cold stress, which is conductive to the breeding of cold-tolerance P.pratensis genotype.
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Affiliation(s)
- Wenke Dong
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Xiang Ma
- Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau, Qinghai Academy of Animal Science and Veterinary Medicine, Xining, 810016, China
| | - Hanyu Jiang
- Department of Physic, Nanjing Normal University, Nanjing, 210097, China
| | - Chunxu Zhao
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Huiling Ma
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China.
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23
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Lu X, Zhou Y, Fan F, Peng J, Zhang J. Coordination of light, circadian clock with temperature: The potential mechanisms regulating chilling tolerance in rice. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:737-760. [PMID: 31243851 DOI: 10.1111/jipb.12852] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 06/09/2023]
Abstract
Rice (Oryza sativa L.) is a major staple food crop for over half of the world's population. As a crop species originated from the subtropics, rice production is hampered by chilling stress. The genetic mechanisms of rice responses to chilling stress have attracted much attention, focusing on chilling-related gene mining and functional analyses. Plants have evolved sophisticated regulatory systems to respond to chilling stress in coordination with light signaling pathway and internal circadian clock. However, in rice, information about light-signaling pathways and circadian clock regulation and their roles in chilling tolerance remains elusive. Further investigation into the regulatory network of chilling tolerance in rice is needed, as knowledge of the interaction between temperature, light, and circadian clock dynamics is limited. Here, based on phenotypic analysis of transgenic and mutant rice lines, we delineate the relevant genes with important regulatory roles in chilling tolerance. In addition, we discuss the potential coordination mechanism among temperature, light, and circadian clock in regulating chilling response and tolerance of rice, and provide perspectives for the ongoing chilling signaling network research in rice.
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Affiliation(s)
- Xuedan Lu
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, School of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Yan Zhou
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, School of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Fan Fan
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, School of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - JunHua Peng
- Huazhi Rice Bio-tech Company Ltd., Changsha, 410128, China
| | - Jian Zhang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, School of Agriculture, Hunan Agricultural University, Changsha, 410128, China
- Huazhi Rice Bio-tech Company Ltd., Changsha, 410128, China
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24
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Guo Z, Cai L, Liu C, Huang C, Chen Z, Pan G, Guo T. Global analysis of differentially expressed genes between two Japonica rice varieties induced by low temperature during the booting stage by RNA-Seq. ROYAL SOCIETY OPEN SCIENCE 2020; 7:192243. [PMID: 32742685 PMCID: PMC7353964 DOI: 10.1098/rsos.192243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
As one of the abiotic stresses, low temperature severely threatens rice production during its entire growth period, especially during the booting stage. In the present study, transcriptome analysis was performed comparing Longjing (LJ) 25 (chilling-tolerant) and LJ 11 (chilling-sensitive) rice varieties to identify genes associated with chilling tolerance in rice spikelets. A total of 23 845 expressed genes and 13 205 differentially expressed genes (DEGs) were identified, respectively. Gene ontology (GO) enrichment analyses revealed 'response to cold' (containing 180 DEGs) as the only category enriched in both varieties during the entire cold treatment period. Through MapMan analysis, we identified nine and six DEGs related to the Calvin cycle and antioxidant enzymes, respectively, including OsRBCS3, OsRBCS2, OsRBCS4, OsAPX2 and OsCATC, that under chilling stress were markedly downregulated in LJ11 compared with LJ25. Furthermore, we predicted their protein-protein interaction (PPI) network and identified nine hub genes (the threshold of co-expressed gene number ≥ 11) in Cytoscape, including three RuBisCO-related genes with 14 co-expressed genes. Under chilling stress, antioxidant enzyme activities (peroxidase (POD) and catalase (CAT)) were downregulated in LJ11 compared with LJ25. However, the content of malondialdehyde (MDA) was higher in LJ11 compared with LJ25. Collectively, our findings identify low temperature responsive genes that can be effectively used as candidate genes for molecular breeding programmes to increase the chilling tolerance of rice.
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Affiliation(s)
- Zhenhua Guo
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang, People's Republic of China
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Lijun Cai
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang, People's Republic of China
| | - Chuanxue Liu
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang, People's Republic of China
| | - Cuihong Huang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Zhiqiang Chen
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang, People's Republic of China
| | - Guojun Pan
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang, People's Republic of China
| | - Tao Guo
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
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25
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Zhao Y, Han Q, Ding C, Huang Y, Liao J, Chen T, Feng S, Zhou L, Zhang Z, Chen Y, Yuan S, Yuan M. Effect of Low Temperature on Chlorophyll Biosynthesis and Chloroplast Biogenesis of Rice Seedlings during Greening. Int J Mol Sci 2020; 21:ijms21041390. [PMID: 32092859 PMCID: PMC7073065 DOI: 10.3390/ijms21041390] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 12/21/2022] Open
Abstract
Rice (Oryza sativa L.) frequently suffers in late spring from severe damage due to cold spells, which causes the block of chlorophyll biosynthesis during early rice seedling greening. However, the inhibitory mechanism by which this occurs is still unclear. To explore the responsive mechanism of rice seedlings to low temperatures during greening, the effects of chilling stress on chlorophyll biosynthesis and plastid development were studied in rice seedlings. Chlorophyll biosynthesis was obviously inhibited and chlorophyll accumulation declined under low temperatures during greening. The decrease in chlorophyll synthesis was due to the inhibited synthesis of δ-aminolevulinic acid (ALA) and the suppression of conversion from protochlorophyllide (Pchlide) into chlorophylls (Chls). Meanwhile, the activities of glutamate-1-semialdehyde transaminase (GSA-AT), Mg-chelatase, and protochlorophyllide oxidoreductase (POR) were downregulated under low temperatures. Further investigations showed that chloroplasts at 18 °C had loose granum lamellae, while the thylakoid and lamellar structures of grana could hardly develop at 12 °C after 48 h of greening. Additionally, photosystem II (PSII) and photosystem I (PSI) proteins obviously declined in the stressed seedlings, to the point that the PSII and PSI proteins could hardly be detected after 48 h of greening at 12 °C. Furthermore, the accumulation of reactive oxygen species (ROS) and malondialdehyde (MDA) and cell death were all induced by low temperature. Chilling stress had no effect on the development of epidermis cells, but the stomata were smaller under chilling stress than those at 28 °C. Taken together, our study promotes more comprehensive understanding in that chilling could inhibit chlorophyll biosynthesis and cause oxidative damages during greening.
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Affiliation(s)
- Yuqing Zhao
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Qiaohong Han
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Chunbang Ding
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Yan Huang
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Jinqiu Liao
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Tao Chen
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Shiling Feng
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Lijun Zhou
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Zhongwei Zhang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China; (Z.Z.); (S.Y.)
| | - Yanger Chen
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
| | - Shu Yuan
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China; (Z.Z.); (S.Y.)
| | - Ming Yuan
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China; (Y.Z.); (Q.H.); (C.D.); (Y.H.); (J.L.); (T.C.); (S.F.); (L.Z.); (Y.C.)
- Correspondence:
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Zafar SA, Patil SB, Uzair M, Fang J, Zhao J, Guo T, Yuan S, Uzair M, Luo Q, Shi J, Schreiber L, Li X. DEGENERATED PANICLE AND PARTIAL STERILITY 1 (DPS1) encodes a cystathionine β-synthase domain containing protein required for anther cuticle and panicle development in rice. THE NEW PHYTOLOGIST 2020; 225:356-375. [PMID: 31433495 DOI: 10.1111/nph.16133] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/13/2019] [Indexed: 05/25/2023]
Abstract
Degeneration of apical spikelets and reduced panicle fertility are common reasons for low seed-setting rate in rice (Oryza sativa). However, little is known about the underlying molecular mechanisms. Here, we report a novel degenerated panicle and partial sterility 1 (dps1) mutant that showed panicle apical degeneration and reduced fertility in middle spikelets. dps1 plants were characterized by small whitish anthers with altered cuticle morphology and absence of pollen grains. Amounts of cuticular wax and cutin were significantly reduced in dps1 anthers. Panicles of dps1 plants showed an accumulation of reactive oxygen species (ROS), lower antioxidant activity, and increased programmed cell death. Map-based cloning revealed that DPS1 encodes a mitochondrial-localized protein containing a cystathionine β-synthase domain that showed the highest expression in panicles and anthers. DPS1 physically interacted with mitochondrial thioredoxin proteins Trx1 and Trx20, and it participated in ROS scavenging. Global gene expression analysis in dps1 revealed that biological processes related to fatty acid metabolism and ROS homeostasis were significantly affected, and the expression of key genes involved in wax and cutin biosynthesis were downregulated. These results suggest that DPS1 plays a vital role in regulating ROS homeostasis, anther cuticle formation, and panicle development in rice.
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Affiliation(s)
- Syed Adeel Zafar
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Suyash B Patil
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Muhammad Uzair
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jingjing Fang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jinfeng Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tingting Guo
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | | | - Muhammad Uzair
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qian Luo
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jianxin Shi
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lukas Schreiber
- Institute of Cellular and Molecular Botany, University of Bonn, Bonn, D-53115, Germany
| | - Xueyong Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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Yang M, Yang J, Su L, Sun K, Li D, Liu Y, Wang H, Chen Z, Guo T. Metabolic profile analysis and identification of key metabolites during rice seed germination under low-temperature stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 289:110282. [PMID: 31623771 DOI: 10.1016/j.plantsci.2019.110282] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/04/2019] [Accepted: 09/20/2019] [Indexed: 05/05/2023]
Abstract
The metabolic profile of rice (Oryza sativa) during germination under low temperature (LT) has not been reported. In this study, the rice varieties 02428 (japonica) and YZX (indica) were subjected to experiments consisting of treatments including LT, normal temperature (NT) and a transition from LT to NT, and tissues were sampled at different time points during germination. A total of 730 metabolites were detected by a liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based widely targeted metabolomics method. On the basis of the screening criteria of increased contents under LT and decreased contents under NT, we identified 35 different metabolites that responded to LT stress among the 730 metabolites. Furthermore, the content differences of the 35 metabolites were compared when the samples were transferred from LT to NT. According to a fold change <0.5 or a variable importance in projection (VIP) score>1 at the transition point, 7 out of the 35 metabolites responded significantly to LT stress and were defined as key metabolites. A partial least squares (PLS) regression model of seven key metabolites with seedling length (SL), seedling area (SSA), and seedling volume (SV) was constructed, and the fitting effect was good. These seven key metabolites participate in the biosynthesis of amino acids and phenylpropanoids and in the metabolism of glutathione and inositol phosphate. This study laid a foundation for an improved understanding of the LT-germination mechanism of rice seeds.
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Affiliation(s)
- Meng Yang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Jing Yang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Ling Su
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Kai Sun
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Dongxiu Li
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Yongzhu Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Hui Wang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Zhiqiang Chen
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
| | - Tao Guo
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China.
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Park SC, Kim IR, Hwang JE, Kim JY, Jung YJ, Choi W, Lee Y, Jang MK, Lee JR. Functional Mechanisms Underlying the Antimicrobial Activity of the Oryza sativa Trx-like Protein. Int J Mol Sci 2019; 20:ijms20061413. [PMID: 30897830 PMCID: PMC6471494 DOI: 10.3390/ijms20061413] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 12/14/2022] Open
Abstract
Plants are constantly subjected to a variety of environmental stresses and have evolved regulatory responses to overcome unfavorable conditions that might reduce or adversely change a plant’s growth or development. Among these, the regulated production of reactive oxygen species (ROS) as a signaling molecule occurs during plant development and pathogen defense. This study demonstrates the possible antifungal activity of Oryza sativa Tetratricopeptide Domain-containing thioredoxin (OsTDX) protein against various fungal pathogens. The transcription of OsTDX was induced by various environmental stresses known to elicit the generation of ROS in plant cells. OsTDX protein showed potent antifungal activity, with minimum inhibitory concentrations (MICs) against yeast and filamentous fungi ranging between 1.56 and 6.25 and 50 and 100 µg/mL, respectively. The uptake of SYTOX-Green into fungal cells and efflux of calcein from artificial fungus-like liposomes suggest that its killing mechanism involves membrane permeabilization and damage. In addition, irregular blebs and holes apparent on the surfaces of OsTDX-treated fungal cells indicate the membranolytic action of this protein. Our results suggest that the OsTDX protein represents a potentially useful lead for the development of pathogen-resistant plants.
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Affiliation(s)
- Seong-Cheol Park
- Department of Polymer Science and Engineering, Sunchon National University, Suncheon 57922, Korea.
| | - Il Ryong Kim
- National Institute of Ecology, 1210 Geumgang-ro, Maseo-myeon, Seocheon-gun 33657, Korea.
- Division of Applied Life Science (BK21+ Program) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea.
| | - Jung Eun Hwang
- National Institute of Ecology, 1210 Geumgang-ro, Maseo-myeon, Seocheon-gun 33657, Korea.
| | - Jin-Young Kim
- Department of Polymer Science and Engineering, Sunchon National University, Suncheon 57922, Korea.
| | - Young Jun Jung
- National Institute of Ecology, 1210 Geumgang-ro, Maseo-myeon, Seocheon-gun 33657, Korea.
| | - Wonkyun Choi
- National Institute of Ecology, 1210 Geumgang-ro, Maseo-myeon, Seocheon-gun 33657, Korea.
| | - Yongjae Lee
- Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843, USA.
| | - Mi-Kyeong Jang
- Department of Polymer Science and Engineering, Sunchon National University, Suncheon 57922, Korea.
- The Research Institute for Sanitation and Environment of Coastal Areas, Sunchon National University, Suncheon 57922, Korea.
| | - Jung Ro Lee
- National Institute of Ecology, 1210 Geumgang-ro, Maseo-myeon, Seocheon-gun 33657, Korea.
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Buti M, Pasquariello M, Ronga D, Milc JA, Pecchioni N, Ho VT, Pucciariello C, Perata P, Francia E. Transcriptome profiling of short-term response to chilling stress in tolerant and sensitive Oryza sativa ssp. Japonica seedlings. Funct Integr Genomics 2018; 18:627-644. [PMID: 29876699 DOI: 10.1007/s10142-018-0615-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/07/2018] [Accepted: 05/23/2018] [Indexed: 12/26/2022]
Abstract
Low temperature is a major factor limiting rice growth and yield, and seedling is one of the developmental stages at which sensitivity to chilling stress is higher. Tolerance to chilling is a complex quantitative trait, so one of the most effective approaches to identify genes and pathways involved is to compare the stress-induced expression changes between tolerant and sensitive genotypes. Phenotypic responses to chilling of 13 Japonica cultivars were evaluated, and Thaibonnet and Volano were selected as sensitive and tolerant genotypes, respectively. To thoroughly profile the short-term response of the two cultivars to chilling, RNA-Seq was performed on Thaibonnet and Volano seedlings after 0 (not stressed), 2, and 10 h at 10 °C. Differential expression analysis revealed that the ICE-DREB1/CBF pathway plays a primary role in chilling tolerance, mainly due to some important transcription factors involved (some of which had never been reported before). Moreover, the expression trends of some genes that were radically different between Thaibonnet and Volano (i.e., calcium-dependent protein kinases OsCDPK21 and OsCDPK23, cytochrome P450 monooxygenase CYP76M8, etc.) suggest their involvement in low temperature tolerance too. Density of differentially expressed genes along rice genome was determined and linked to the position of known QTLs: remarkable co-locations were reported, delivering an overview of genomic regions determinant for low temperature response at seedling stage. Our study contributes to a better understanding of the molecular mechanisms underlying rice response to chilling and provides a solid background for development of low temperature-tolerant germplasm.
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Affiliation(s)
- Matteo Buti
- BIOGEST-SITEIA, University of Modena and Reggio Emilia, Via Amendola, 2 - Pad. Besta, 42122, Reggio Emilia, Italy.
| | | | - Domenico Ronga
- BIOGEST-SITEIA, University of Modena and Reggio Emilia, Via Amendola, 2 - Pad. Besta, 42122, Reggio Emilia, Italy
| | - Justyna Anna Milc
- BIOGEST-SITEIA, University of Modena and Reggio Emilia, Via Amendola, 2 - Pad. Besta, 42122, Reggio Emilia, Italy
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Nicola Pecchioni
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
- Cereal Research Centre, Council for Agricultural Research and Economics, Foggia, Italy
| | - Viet The Ho
- PlantLab, Scuola Superiore Sant'Anna, Pisa, Italy
- Ho Chi Minh City University of Food Industry, Ho Chi Minh, Vietnam
| | | | | | - Enrico Francia
- BIOGEST-SITEIA, University of Modena and Reggio Emilia, Via Amendola, 2 - Pad. Besta, 42122, Reggio Emilia, Italy
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
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Singh A, Tyagi C, Nath O, Singh IK. Helicoverpa-inducible Thioredoxin h from Cicer arietinum: structural modeling and potential targets. Int J Biol Macromol 2018; 109:231-243. [DOI: 10.1016/j.ijbiomac.2017.12.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/09/2017] [Accepted: 12/12/2017] [Indexed: 12/31/2022]
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Zhang T, Huang L, Wang Y, Wang W, Zhao X, Zhang S, Zhang J, Hu F, Fu B, Li Z. Differential transcriptome profiling of chilling stress response between shoots and rhizomes of Oryza longistaminata using RNA sequencing. PLoS One 2017; 12:e0188625. [PMID: 29190752 PMCID: PMC5708648 DOI: 10.1371/journal.pone.0188625] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 11/11/2017] [Indexed: 11/18/2022] Open
Abstract
Rice (Oryza sativa) is very sensitive to chilling stress at seedling and reproductive stages, whereas wild rice, O. longistaminata, tolerates non-freezing cold temperatures and has overwintering ability. Elucidating the molecular mechanisms of chilling tolerance (CT) in O. longistaminata should thus provide a basis for rice CT improvement through molecular breeding. In this study, high-throughput RNA sequencing was performed to profile global transcriptome alterations and crucial genes involved in response to long-term low temperature in O. longistaminata shoots and rhizomes subjected to 7 days of chilling stress. A total of 605 and 403 genes were respectively identified as up- and down-regulated in O. longistaminata under 7 days of chilling stress, with 354 and 371 differentially expressed genes (DEGs) found exclusively in shoots and rhizomes, respectively. GO enrichment and KEGG pathway analyses revealed that multiple transcriptional regulatory pathways were enriched in commonly induced genes in both tissues; in contrast, only the photosynthesis pathway was prevalent in genes uniquely induced in shoots, whereas several key metabolic pathways and the programmed cell death process were enriched in genes induced only in rhizomes. Further analysis of these tissue-specific DEGs showed that the CBF/DREB1 regulon and other transcription factors (TFs), including AP2/EREBPs, MYBs, and WRKYs, were synergistically involved in transcriptional regulation of chilling stress response in shoots. Different sets of TFs, such as OsERF922, OsNAC9, OsWRKY25, and WRKY74, and eight genes encoding antioxidant enzymes were exclusively activated in rhizomes under long-term low-temperature treatment. Furthermore, several cis-regulatory elements, including the ICE1-binding site, the GATA element for phytochrome regulation, and the W-box for WRKY binding, were highly abundant in both tissues, confirming the involvement of multiple regulatory genes and complex networks in the transcriptional regulation of CT in O. longistaminata. Finally, most chilling-induced genes with alternative splicing exclusive to shoots were associated with photosynthesis and regulation of gene expression, while those enriched in rhizomes were primarily related to stress signal transduction; this indicates that tissue-specific transcriptional and post-transcriptional regulation mechanisms synergistically contribute to O. longistaminata long-term CT. Our findings provide an overview of the complex regulatory networks of CT in O. longistaminata.
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Affiliation(s)
- Ting Zhang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Liyu Huang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- School of Agriculture, Yunnan University, Yunnan, China
- Research Center for Perennial Rice Engineering and Technology, Yunnan University, Yunnan, China
| | - Yinxiao Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wensheng Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiuqin Zhao
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shilai Zhang
- School of Agriculture, Yunnan University, Yunnan, China
- Research Center for Perennial Rice Engineering and Technology, Yunnan University, Yunnan, China
| | - Jing Zhang
- School of Agriculture, Yunnan University, Yunnan, China
- Research Center for Perennial Rice Engineering and Technology, Yunnan University, Yunnan, China
| | - Fengyi Hu
- School of Agriculture, Yunnan University, Yunnan, China
- Research Center for Perennial Rice Engineering and Technology, Yunnan University, Yunnan, China
| | - Binying Fu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- Shenzhen Institute for Innovative Breeding, Chinese Academy of Agricultural Sciences, Shenzhen, China
- * E-mail:
| | - Zhikang Li
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- Shenzhen Institute for Innovative Breeding, Chinese Academy of Agricultural Sciences, Shenzhen, China
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Zhang RX, Qin LJ, Zhao DG. Overexpression of the OsIMP Gene Increases the Accumulation of Inositol and Confers Enhanced Cold Tolerance in Tobacco through Modulation of the Antioxidant Enzymes' Activities. Genes (Basel) 2017; 8:E179. [PMID: 28726715 PMCID: PMC5541312 DOI: 10.3390/genes8070179] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/16/2017] [Accepted: 07/04/2017] [Indexed: 01/07/2023] Open
Abstract
Inositol is a cyclic polyol that is involved in various physiological processes, including signal transduction and stress adaptation in plants. l-myo-inositol monophosphatase (IMPase) is one of the metal-dependent phosphatase family members and catalyzes the last reaction step of biosynthesis of inositol. Although increased IMPase activity induced by abiotic stress has been reported in chickpea plants, the role and regulation of the IMP gene in rice (Oryza sativa L.) remains poorly understood. In the present work, we obtained a full-length cDNA sequence coding IMPase in the cold tolerant rice landraces in Gaogonggui, which is named as OsIMP. Multiple alignment results have displayed that this sequence has characteristic signature motifs and conserved enzyme active sites of the phosphatase super family. Phylogenetic analysis showed that IMPase is most closely related to that of the wild rice Oryza brachyantha, while transcript analysis revealed that the expression of the OsIMP is significantly induced by cold stress and exogenous abscisic acid (ABA) treatment. Meanwhile, we cloned the 5' flanking promoter sequence of the OsIMP gene and identified several important cis-acting elements, such as LTR (low-temperature responsiveness), TCA-element (salicylic acid responsiveness), ABRE-element (abscisic acid responsiveness), GARE-motif (gibberellin responsive), MBS (MYB Binding Site) and other cis-acting elements related to defense and stress responsiveness. To further investigate the potential function of the OsIMP gene, we generated transgenic tobacco plants overexpressing the OsIMP gene and the cold tolerance test indicated that these transgenic tobacco plants exhibit improved cold tolerance. Furthermore, transgenic tobacco plants have a lower level of hydrogen peroxide (H₂O₂) and malondialdehyde (MDA), and a higher content of total chlorophyll as well as increased antioxidant enzyme activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD), when compared to wild type (WT) tobacco plants under normal and cold stress conditions.
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Affiliation(s)
- Rong-Xiang Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China.
- College of Chemistry and Life Science, Guizhou Education University, Guiyang 550018, China.
| | - Li-Jun Qin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China.
| | - De-Gang Zhao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China.
- Guizhou Academy of Agricultural Sciences, Guiyang 550025, China.
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Abstract
Kinase-mediated phosphorylation is a pivotal regulatory process in stomatal responses to stresses. Through a redox proteomics study, a sucrose non-fermenting 1-related protein kinase (SnRK2.4) was identified to be redox-regulated in Brassica napus guard cells upon abscisic acid treatment. There are six genes encoding SnRK2.4 paralogs in B. napus Here, we show that recombinant BnSnRK2.4-1C exhibited autophosphorylation activity and preferentially phosphorylated the N-terminal region of B. napus slow anion channel (BnSLAC1-NT) over generic substrates. The in vitro activity of BnSnRK2.4-1C requires the presence of manganese (Mn2+). Phosphorylation sites of autophosphorylated BnSnRK2.4-1C were mapped, including serine and threonine residues in the activation loop. In vitro BnSnRK2.4-1C autophosphorylation activity was inhibited by oxidants such as H2O2 and recovered by active thioredoxin isoforms, indicating redox regulation of BnSnRK2.4-1C. Thiol-specific isotope tagging followed by mass spectrometry analysis revealed specific cysteine residues responsive to oxidant treatments. The in vivo activity of BnSnRK2.4-1C is inhibited by 15 min of H2O2 treatment. Taken together, these data indicate that BnSnRK2.4-1C, an SnRK preferentially expressed in guard cells, is redox-regulated with potential roles in guard cell signal transduction.
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Morino K, Kimizu M, Fujiwara M. Disulfide proteomics of rice cultured cells in response to OsRacl and probenazole-related immune signaling pathway in rice. Proteome Sci 2017; 15:6. [PMID: 28413359 PMCID: PMC5390479 DOI: 10.1186/s12953-017-0115-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/05/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Reactive oxygen species (ROS) production is an early event in the immune response of plants. ROS production affects the redox-based modification of cysteine residues in redox proteins, which contribute to protein functions such as enzymatic activity, protein-protein interactions, oligomerization, and intracellular localization. Thus, the sensitivity of cysteine residues to changes in the cellular redox status is critical to the immune response of plants. METHODS We used disulfide proteomics to identify immune response-related redox proteins. Total protein was extracted from rice cultured cells expressing constitutively active or dominant-negative OsRacl, which is a key regulator of the immune response in rice, and from rice cultured cells that were treated with probenazole, which is an activator of the plant immune response, in the presence of the thiol group-specific fluorescent probe monobromobimane (mBBr), which was a tag for reduced proteins in a differential display two-dimensional gel electrophoresis. The mBBr fluorescence was detected by using a charge-coupled device system, and total protein spots were detected using Coomassie brilliant blue staining. Both of the protein spots were analyzed by gel image software and identified using MS spectrometry. The possible disulfide bonds were identified using the disulfide bond prediction software. Subcellular localization and bimolecular fluorescence complementation analysis were performed in one of the identified proteins: Oryza sativa cold shock protein 2 (OsCSP2). RESULTS We identified seven proteins carrying potential redox-sensitive cysteine residues. Two proteins of them were oxidized in cultured cells expressing DN-OsRac1, which indicates that these two proteins would be inactivated through the inhibition of OsRac1 signaling pathway. One of the two oxidized proteins, OsCSP2, contains 197 amino acid residues and six cysteine residues. Site-directed mutagenesis of these cysteine residues revealed that a Cys140 mutation causes mislocalization of a green fluorescent protein fusion protein in the root cells of rice. Bimolecular fluorescence complementation analysis revealed that OsCSP2 is localized in the nucleus as a homo dimer in rice root cells. CONCLUSIONS The findings of the study indicate that redox-sensitive cysteine modification would contribute to the immune response in rice.
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Affiliation(s)
- Kazuko Morino
- National Agriculture and Food Research Organization, Central Region Agricultural Research Center, 1-2-1 Inada, Joetsu, Niigata 943-0193 Japan
| | - Mayumi Kimizu
- National Agriculture and Food Research Organization, Central Region Agricultural Research Center, 1-2-1 Inada, Joetsu, Niigata 943-0193 Japan
| | - Masayuki Fujiwara
- Keio University, Institute for Advanced Biosciences, 246-2 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052 Japan
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Characteristics of Three Thioredoxin Genes and Their Role in Chilling Tolerance of Harvested Banana Fruit. Int J Mol Sci 2016; 17:ijms17091526. [PMID: 27618038 PMCID: PMC5037801 DOI: 10.3390/ijms17091526] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 08/20/2016] [Accepted: 09/06/2016] [Indexed: 12/15/2022] Open
Abstract
Thioredoxins (Trxs) are small proteins with a conserved redox active site WCGPC and are involved in a wide range of cellular redox processes. However, little information on the role of Trx in regulating low-temperature stress of harvested fruit is available. In this study, three full-length Trx cDNAs, designated MaTrx6, MaTrx9 and MaTrx12, were cloned from banana (Musa acuminata) fruit. Phylogenetic analysis and protein sequence alignments showed that MaTrx6 was grouped to h2 type with a typical active site of WCGPC, whereas MaTrx9 and MaTrx12 were assigned to atypical cys his-rich Trxs (ACHT) and h3 type with atypical active sites of GCAGC and WCSPC, respectively. Subcellular localization indicated that MaTrx6 and MaTrx12 were located in the plasma membrane and cytoplasm, respectively, whereas MaTrx9 showed a dual cytoplasmic and chloroplast localization. Application of ethylene induced chilling tolerance of harvested banana fruit, whereas 1-MCP, an inhibitor of ethylene perception, aggravated the development of chilling injury. RT-qPCR analysis showed that expression of MaTrx12 was up-regulated and down-regulated in ethylene- and 1-MCP-treated banana fruit at low temperature, respectively. Furthermore, heterologous expression of MaTrx12 in cytoplasmic Trx-deficient Saccharomyces cerevisiae strain increased the viability of the strain under H₂O₂. These results suggest that MaTrx12 plays an important role in the chilling tolerance of harvested banana fruit, possibly by regulating redox homeostasis.
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Waszczak C, Akter S, Jacques S, Huang J, Messens J, Van Breusegem F. Oxidative post-translational modifications of cysteine residues in plant signal transduction. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:2923-34. [PMID: 25750423 DOI: 10.1093/jxb/erv084] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In plants, fluctuation of the redox balance by altered levels of reactive oxygen species (ROS) can affect many aspects of cellular physiology. ROS homeostasis is governed by a diversified set of antioxidant systems. Perturbation of this homeostasis leads to transient or permanent changes in the redox status and is exploited by plants in different stress signalling mechanisms. Understanding how plants sense ROS and transduce these stimuli into downstream biological responses is still a major challenge. ROS can provoke reversible and irreversible modifications to proteins that act in diverse signalling pathways. These oxidative post-translational modifications (Ox-PTMs) lead to oxidative damage and/or trigger structural alterations in these target proteins. Characterization of the effect of individual Ox-PTMs on individual proteins is the key to a better understanding of how cells interpret the oxidative signals that arise from developmental cues and stress conditions. This review focuses on ROS-mediated Ox-PTMs on cysteine (Cys) residues. The Cys side chain, with its high nucleophilic capacity, appears to be the principle target of ROS. Ox-PTMs on Cys residues participate in various signalling cascades initiated by plant stress hormones. We review the mechanistic aspects and functional consequences of Cys Ox-PTMs on specific target proteins in view of stress signalling events.
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Affiliation(s)
- Cezary Waszczak
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium Structural Biology Research Center, VIB, 1050 Brussels, Belgium Brussels Center for Redox Biology, 1050 Brussels, Belgium Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium * Present address: Division of Plant Biology, Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland
| | - Salma Akter
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium Structural Biology Research Center, VIB, 1050 Brussels, Belgium Brussels Center for Redox Biology, 1050 Brussels, Belgium Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium Faculty of Biological Sciences, University of Dhaka, 1000 Dhaka, Bangladesh
| | - Silke Jacques
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium Department of Biochemistry, Ghent University, 9000 Gent, Belgium Department of Medical Protein Research, VIB, 9000 Gent, Belgium
| | - Jingjing Huang
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium Brussels Center for Redox Biology, 1050 Brussels, Belgium Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Joris Messens
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium Brussels Center for Redox Biology, 1050 Brussels, Belgium Structural Biology Brussels, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Frank Van Breusegem
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
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Sun X, Jia Q, Guo Y, Zheng X, Liang K. Whole-genome analysis revealed the positively selected genes during the differentiation of indica and temperate japonica rice. PLoS One 2015; 10:e0119239. [PMID: 25774680 PMCID: PMC4361536 DOI: 10.1371/journal.pone.0119239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 01/11/2015] [Indexed: 11/19/2022] Open
Abstract
To investigate the selective pressures acting on the protein-coding genes during the differentiation of indica and japonica, all of the possible orthologous genes between the Nipponbare and 93–11 genomes were identified and compared with each other. Among these genes, 8,530 pairs had identical sequences, and 27,384 pairs shared more than 90% sequence identity. Only 2,678 pairs of genes displaying a Ka/Ks ratio significantly greater than one were revealed, and most of these genes contained only nonsynonymous sites. The genes without synonymous site were further analyzed with the SNP data of 1529 O. sativa and O. rufipogon accessions, and 1068 genes were identified to be under positive selection during the differentiation of indica and temperate japonica. The positively selected genes (PSGs) are unevenly distributed on 12 chromosomes, and the proteins encoded by the PSGs are dominant with binding, transferase and hydrolase activities, and especially enriched in the plant responses to stimuli, biological regulations, and transport processes. Meanwhile, the most PSGs of the known function and/or expression were involved in the regulation of biotic/abiotic stresses. The evidence of pervasive positive selection suggested that many factors drove the differentiation of indica and japonica, which has already started in wild rice but is much lower than in cultivated rice. Lower differentiation and less PSGs revealed between the Or-It and Or-IIIt wild rice groups implied that artificial selection provides greater contribution on the differentiation than natural selection. In addition, the phylogenetic tree constructed with positively selected sites showed that the japonica varieties exhibited more diversity than indica on differentiation, and Or-III of O. rufipogon exhibited more than Or-I.
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Affiliation(s)
- Xinli Sun
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou, China
- College of Crop Science, Fujian Agriculture & Forestry University, Fuzhou, China
- * E-mail:
| | - Qi Jia
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou, China
- College of Crop Science, Fujian Agriculture & Forestry University, Fuzhou, China
| | - Yuchun Guo
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou, China
- College of Crop Science, Fujian Agriculture & Forestry University, Fuzhou, China
| | - Xiujuan Zheng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou, China
- College of Crop Science, Fujian Agriculture & Forestry University, Fuzhou, China
| | - Kangjing Liang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou, China
- College of Crop Science, Fujian Agriculture & Forestry University, Fuzhou, China
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Schmidt R, Schippers JHM. ROS-mediated redox signaling during cell differentiation in plants. Biochim Biophys Acta Gen Subj 2014; 1850:1497-508. [PMID: 25542301 DOI: 10.1016/j.bbagen.2014.12.020] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND Reactive oxygen species (ROS) have emerged in recent years as important regulators of cell division and differentiation. SCOPE OF REVIEW The cellular redox state has a major impact on cell fate and multicellular organism development. However, the exact molecular mechanisms through which ROS manifest their regulation over cellular development are only starting to be understood in plants. ROS levels are constantly monitored and any change in the redox pool is rapidly sensed and responded upon. Different types of ROS cause specific oxidative modifications, providing the basic characteristics of a signaling molecule. Here we provide an overview of ROS sensors and signaling cascades that regulate transcriptional responses in plants to guide cellular differentiation and organ development. MAJOR CONCLUSIONS Although several redox sensors and cascades have been identified, they represent only a first glimpse on the impact that redox signaling has on plant development and growth. GENERAL SIGNIFICANCE We provide an initial evaluation of ROS signaling cascades involved in cell differentiation in plants and identify potential avenues for future studies. This article is part of a Special Issue entitled Redox regulation of differentiation and de-differentiation.
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Affiliation(s)
- Romy Schmidt
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Jos H M Schippers
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
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Xie G, Sasaki K, Imai R, Xie D. A redox-sensitive cysteine residue regulates the kinase activities of OsMPK3 and OsMPK6 in vitro. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2014; 227:69-75. [PMID: 25219308 DOI: 10.1016/j.plantsci.2014.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 07/01/2014] [Accepted: 07/03/2014] [Indexed: 06/03/2023]
Abstract
Two subgroup A rice mitogen-activated protein kinases (MAPKs), OsMPK3 and OsMPK6, have been implicated in multiple stress responses. However, the redox-control of the kinase activity of these proteins remains unknown. Here, immunoprecipitated OsMPK3 and OsMPK6 were initially activated in 15min, and this activation transiently increased in rice seedlings under H2O2 stress. Among the six conserved cysteine residues, only the fourth cysteine residues in the kinase domain VII, Cys(179) and Cys(210), were required for the in vitro kinase activities of OsMPK3 and OsMPK6, respectively. Moreover, the substitution of these specific cysteine residues with serine abrogated in vitro kinase responses to redox conditions. These results suggest a novel redox-control mechanism for the kinase activities of these MAPKs in vivo.
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Affiliation(s)
- Guosheng Xie
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Kentaro Sasaki
- Crop Breeding Division, Hokkaido Agricultural Research Center, National Agricultural and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Ryozo Imai
- Crop Breeding Division, Hokkaido Agricultural Research Center, National Agricultural and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Deying Xie
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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Roodgar Nashta M, Shahpiri A, Mohammad Beigi M. Substitution of Thr(55) by Gly and Lys(48) by Asp in OsTrx20 using site-directed mutagenesis. Int J Biol Macromol 2014; 68:185-8. [PMID: 24794197 DOI: 10.1016/j.ijbiomac.2014.04.047] [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: 03/08/2014] [Revised: 04/21/2014] [Accepted: 04/22/2014] [Indexed: 10/25/2022]
Abstract
Thioredoxins are small (12-13kDa) ubiquitous proteins containing a redox active disulfide bridge. The primary structure of one of the rice Trx isoforms, OsTrx20, in which Thr is substituted for the largely conserved Gly in position 55 in the active site and Lys is substituted for the conserved Asp/Asn in position 48 is considerably different with other h-type Trx isoforms. In order to probe the functional roles of Thr-55 and Lys-48 in OsTrx20, Thr was replaced with Gly and Lys with Asp using site-directed mutagenesis. The wild type OsTrx20 as well as single mutants T55GOsTrx20, K48DOsTrx20 and the double mutant T55G-K48DOstrx20 were heterologously expressed in Escherichia coli and purified. The changes in the ability to reduce insulin for OsTrx20 and mutants as well as OsTrx23 which has a Trx typical active site were monitored in the pH range 6.5-8. The results showed that whereas the activity of wild type OsTrx20 is dependent on pH and decreases remarkably at high pH values, the activities of mutants T55GOsTrx20, K48DOsTrx20, T55G-K48DOsTrx20 and wild type OsTrx23 slightly change under different pH conditions. These results support the significant involvement of residues Thr-55 and Lys-48 in instability of OsTrx20 activity under pH variations.
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Affiliation(s)
- Mitra Roodgar Nashta
- Department of Agricultural Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Azar Shahpiri
- Department of Agricultural Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Majid Mohammad Beigi
- Department of Biomedical Engineering, College of Engineering, University of Isfahan, Isfahan 81746-73441, Iran
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Zhang Q, Chen Q, Wang S, Hong Y, Wang Z. Rice and cold stress: methods for its evaluation and summary of cold tolerance-related quantitative trait loci. RICE (NEW YORK, N.Y.) 2014; 7:24. [PMID: 25279026 PMCID: PMC4182278 DOI: 10.1186/s12284-014-0024-3] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 09/09/2014] [Indexed: 05/03/2023]
Abstract
Cold stress adversely affects rice (Oryza sativa L.) growth and productivity, and has so far determined its geographical distribution. Dissecting cold stress-mediated physiological changes and understanding their genetic causes will facilitate the breeding of rice for cold tolerance. Here, we review recent progress in research on cold stress-mediated physiological traits and metabolites, and indicate their roles in the cold-response network and cold-tolerance evaluation. We also discuss criteria for evaluating cold tolerance and evaluate the scope and shortcomings of each application. Moreover, we summarize research on quantitative trait loci (QTL) related to cold stress at the germination, seedling, and reproductive stages that should provide useful information to accelerate progress in breeding cold-tolerant rice.
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Affiliation(s)
- Qi Zhang
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, College of Biological Science and Technology, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China
| | - Qiuhong Chen
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, College of Biological Science and Technology, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
| | - Shaoling Wang
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, College of Biological Science and Technology, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
| | - Yahui Hong
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, College of Biological Science and Technology, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
| | - Zhilong Wang
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, College of Biological Science and Technology, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
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Wakasa Y, Yasuda H, Takaiwa F. Secretory type of recombinant thioredoxin h induces ER stress in endosperm cells of transgenic rice. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:202-210. [PMID: 23043988 DOI: 10.1016/j.jplph.2012.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 09/11/2012] [Accepted: 09/11/2012] [Indexed: 06/01/2023]
Abstract
Thioredoxin h (TRX h) functions as a reducing protein and is present in all organisms. As a new approach for inducing the endoplasmic reticulum (ER) stress, TRX h (OsTRX23) was expressed as a secretory protein using the endosperm-specific glutelin GluB-1 promoter and a signal peptide. In transgenic rice seeds, the majority of the recombinant TRX h accumulated in the ER but some was also localized to the protein body IIs (PB-IIs). The rice grain quality was dependent on the TRX h accumulation level. Increased TRX h expression resulted in aberrant phenotypes, such as chalky and shriveled features, lower seed weight and lower seed protein content. Furthermore, the accumulation of some seed storage proteins (SSPs) was significantly suppressed and the morphology of the protein bodies (PB-Is and PB-IIs) changed according to the level of TRX h. SSPs, such as 13kDa prolamin and GluA, were specifically modified via the reducing action of TRX h. These changes led to the activation of the ER stress response, which was accompanied by the expression of several chaperone proteins. Specifically, the ER stress markers BiP4 and BiP5 were significantly up-regulated by an increase in the level of TRX h. These results suggest that changes in the conformation of certain SSPs via the action of recombinant TRX h lead to an induced ER stress response in transgenic rice seeds.
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Affiliation(s)
- Yuhya Wakasa
- Functional Transgenic Crops Research Unit, Genetically Modified Organism Research Center, National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
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He T, Song B, Liu J, Chen X, Ou Y, Lin Y, Zhang H, Xie C. A new isoform of thioredoxin h group in potato, SbTRXh1, regulates cold-induced sweetening of potato tubers by adjusting sucrose content. PLANT CELL REPORTS 2012; 31:1463-1471. [PMID: 22527194 DOI: 10.1007/s00299-012-1261-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Revised: 03/21/2012] [Accepted: 04/02/2012] [Indexed: 05/31/2023]
Abstract
UNLABELLED In order to study the molecular mechanism of the cold-induced sweetening (CIS) of potato tubers, a novel isoform of thioredoxin h group, SbTRXh1, which was up-regulated early in the 4 °C storage of CIS-resistant potato (Solanum berthaultii) tubers, was cloned in present research. The genetic transformation of over-expression (OE) and RNA interference (RNAi) of SbTRXh1 into potato cv. E-Potato 3 (E3) was carried out to clarify its function in CIS regulation. The results showed that the transcripts of SbTRXh1 in either OE- or RNAi-tubers were strongly induced in 4 °C storage and quantitatively related to the reducing sugar (RS) accumulation, indicating that SbTRXh1 is involved in the CIS process of potato tubers. Regression analysis between the transcripts and protein contents of SbTRXh1 showed a very significant logarithmic relationship implying that the expression of SbTRXh1 may be mainly regulated at transcriptional level. Further monitoring the variation of the sugar contents in cold-stored tubers demonstrated a linear relationship between RS and sucrose (Suc). Thus, it can be inferred that SbTRXh1 may function in the Suc-RS pathway for CIS regulation of potato tubers. KEY MESSAGE SbTRXh1 is primarily demonstrated to be involved in the regulation of cold-induced sweetening (CIS) of potato tubers, and it may function in the Suc-RS pathway for CIS regulation.
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Affiliation(s)
- Tianjiu He
- National Centre for Vegetable Improvement-Central China, Key Laboratory of Horticultural Plant Biology-Huazhong Agricultural University, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
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Nuruzzaman M, Sharoni AM, Satoh K, Al-Shammari T, Shimizu T, Sasaya T, Omura T, Kikuchi S. The thioredoxin gene family in rice: genome-wide identification and expression profiling under different biotic and abiotic treatments. Biochem Biophys Res Commun 2012; 423:417-23. [PMID: 22683629 DOI: 10.1016/j.bbrc.2012.05.142] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 05/26/2012] [Indexed: 01/04/2023]
Abstract
Thioredoxin (TRX) is a multi-functional redox protein. Genome-wide survey and expression profiles of different stresses were observed. Conserved amino acid residues and phylogeny construction using the OsTRX conserved domain sequence suggest that the TRX gene family can be classified broadly into six subfamilies in rice. We compared potential gene birth-and-death events in the OsTRX genes. The Ka/Ks ratio is a measure to explore the mechanism and 3 evolutionary stages of the OsTRX genes divergence after duplication. We used 270 TRX genes from monocots and eudicots for synteny analysis. Furthermore, we investigated expression profiles of this gene family under 5 biotic and 3 abiotic stresses. Several genes were differentially expressed with high levels of expression and exhibited subfunctionalization and neofunctionalization after the duplication event response to different stresses, which provides novel reference for the cloning of the most promising candidate genes from OsTRX gene family for further functional analysis.
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Affiliation(s)
- Mohammed Nuruzzaman
- Plant Genome Research Unit Agrogenomics Research Center, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan
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Biochemical identification of the OsMKK6-OsMPK3 signalling pathway for chilling stress tolerance in rice. Biochem J 2012; 443:95-102. [PMID: 22248149 DOI: 10.1042/bj20111792] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
MAPK (mitogen-activated protein kinase) pathways have been implicated in stress signalling in plants. In the present study, we performed yeast two-hybrid screening to identify partner MAPKs for OsMKK (Oryza sativa MAPK kinase) 6, a rice MAPK kinase, and revealed specific interactions of OsMKK6 with OsMPK3 and OsMPK6. OsMPK3 and OsMPK6 each co-immunoprecipitated OsMKK6, and both were directly phosphorylated by OsMKK6 in vitro. An MBP (myelin basic protein) kinase assay of the immunoprecipitation complex indicated that OsMPK3 and OsMPK6 were activated in response to a moderately low temperature (12°C), but not a severely low temperature (4°C) in rice seedlings. A constitutively active form of OsMKK6, OsMKK6DD, showed elevated phosphorylation activity against OsMPK3 and OsMPK6 in vitro. OsMPK3, but not OsMPK6, was constitutively activated in transgenic plants overexpressing OsMKK6DD, indicating that OsMPK3 is an in vivo target of OsMKK6. Enhanced chilling tolerance was observed in the transgenic plants overexpressing OsMKK6DD. Taken together, our data suggest that OsMKK6 and OsMPK3 constitute a moderately low-temperature signalling pathway and regulate cold stress tolerance in rice.
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46
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Zhang CJ, Zhao BC, Ge WN, Zhang YF, Song Y, Sun DY, Guo Y. An apoplastic h-type thioredoxin is involved in the stress response through regulation of the apoplastic reactive oxygen species in rice. PLANT PHYSIOLOGY 2011; 157:1884-99. [PMID: 22010108 PMCID: PMC3327207 DOI: 10.1104/pp.111.182808] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Thioredoxins (Trxs) are a multigenic family of proteins in plants that play a critical role in redox balance regulation through thiol-disulfide exchange reactions. There are 10 members of the h-type Trxs in rice (Oryza sativa), and none of them has been clearly characterized. Here, we demonstrate that OsTRXh1, a subgroup I h-type Trx in rice, possesses reduction activity in vitro and complements the hydrogen peroxide sensitivity of Trx-deficient yeast mutants. OsTRXh1 is ubiquitously expressed in rice, and its expression is induced by salt and abscisic acid treatments. Intriguingly, OsTRXh1 is secreted into the extracellular space, and salt stress in the apoplast of rice induces its expression at the protein level. The knockdown of OsTRXh1 results in dwarf plants with fewer tillers, whereas the overexpression of OsTRXh1 leads to a salt-sensitive phenotype in rice. In addition, both the knockdown and overexpression of OsTRXh1 decrease abscisic acid sensitivity during seed germination and seedling growth. We also analyzed the levels of hydrogen peroxide produced in transgenic plants, and the results show that more hydrogen peroxide is produced in the extracellular space of OsTRXh1 knockdown plants than in wild-type plants, whereas the OsTRXh1 overexpression plants produce less hydrogen peroxide under salt stress. These results show that OsTRXh1 regulates the redox state of the apoplast and influences plant development and stress responses.
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Affiliation(s)
| | | | | | | | | | | | - Yi Guo
- Corresponding author; e-mail
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Li H, Chen Z, Hu M, Wang Z, Hua H, Yin C, Zeng H. Different effects of night versus day high temperature on rice quality and accumulation profiling of rice grain proteins during grain filling. PLANT CELL REPORTS 2011; 30:1641-1659. [PMID: 21556707 DOI: 10.1007/s00299-011-1074-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 03/25/2011] [Accepted: 04/14/2011] [Indexed: 05/30/2023]
Abstract
High temperature has adverse effects on rice yield and quality. The different influences of night high temperature (NHT) and day high temperature (DHT) on rice quality and seed protein accumulation profiles during grain filling in indica rice '9311' were studied in this research. The treatment temperatures of the control, NHT, and DHT were 28°C/20°C, 27°C/35°C, and 35°C/27°C, respectively, and all the treatments were maintained for 20 days. The result of rice quality analysis indicated that compared with DHT, NHT exerted less effect on head rice rate and chalkiness, whereas greater effect on grain weight. Moreover, the dynamic accumulation change profiles of 61 protein spots, differentially accumulated and successfully identified under NHT and DHT conditions, were performed by proteomic approach. The results also showed that the different suppressed extent of accumulation amount of cyPPDKB might result in different grain chalkiness between NHT and DHT. Most identified isoforms of proteins, such as PPDK and pullulanase, displayed different accumulation change patterns between NHT and DHT. In addition, compared with DHT, NHT resulted in the unique accumulation patterns of stress and defense proteins. Taken together, the mechanisms of seed protein accumulation profiles induced by NHT and DHT during grain filling should be different in rice, and the potential molecular basis is discussed in this study.
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Affiliation(s)
- Haixia Li
- Crop Physiology and Production Center, Key Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China
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Renard M, Alkhalfioui F, Schmitt-Keichinger C, Ritzenthaler C, Montrichard F. Identification and characterization of thioredoxin h isoforms differentially expressed in germinating seeds of the model legume Medicago truncatula. PLANT PHYSIOLOGY 2011; 155:1113-26. [PMID: 21239621 PMCID: PMC3046573 DOI: 10.1104/pp.110.170712] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 01/11/2011] [Indexed: 05/18/2023]
Abstract
Thioredoxins (Trxs) h, small disulfide reductases, and NADP-thioredoxin reductases (NTRs) have been shown to accumulate in seeds of different plant species and play important roles in seed physiology. However, little is known about the identity, properties, and subcellular location of Trx h isoforms that are abundant in legume seeds. To fill this gap, in this work, we characterized the Trx h family of Medicago truncatula, a model legume, and then explored the activity and localization of Trx h isoforms accumulating in seeds. Twelve Trx h isoforms were identified in M. truncatula. They belong to the groups previously described: h1 to h3 (group I), h4 to h7 (group II), and h8 to h12 (group III). Isoforms of groups I and II were found to be reduced by M. truncatula NTRA, but with different efficiencies, Trxs of group II being more efficiently reduced than Trxs of group I. In contrast, their insulin disulfide-reducing activity varies greatly and independently of the group to which they belong. Furthermore, Trxs h1, h2, and h6 were found to be present in dry and germinating seeds. Trxs h1 and, to a lesser extent, h2 are abundant in both embryonic axes and cotyledons, while Trx h6 is mainly present in cotyledons. Thus, M. truncatula seeds contain distinct isoforms of Trx h that differ in spatial distribution and kinetic properties, suggesting that they play different roles. Because we show that Trx h6 is targeted to the tonoplast, the possible role of this isoform during germination is finally discussed.
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Affiliation(s)
| | | | | | | | - Françoise Montrichard
- Physiologie Moléculaire des Semences, UMR 1191 Université d’Angers-Institut National d’Horticulture-INRA, 49045 Angers cedex 01, France (M.R., F.A., F.M.); Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg, 67084 Strasbourg, France (C.S.-K., C.R.)
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Overexpression of ethylene response factor TERF2 confers cold tolerance in rice seedlings. Transgenic Res 2010; 20:857-66. [DOI: 10.1007/s11248-010-9463-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 11/08/2010] [Indexed: 12/31/2022]
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