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Ji H, Liu J, Chen Y, Yu X, Luo C, Sang L, Zhou J, Liao H. Bioinformatic Analysis of Codon Usage Bias of HSP20 Genes in Four Cruciferous Species. PLANTS (BASEL, SWITZERLAND) 2024; 13:468. [PMID: 38498447 PMCID: PMC10892267 DOI: 10.3390/plants13040468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 01/31/2024] [Accepted: 02/04/2024] [Indexed: 03/20/2024]
Abstract
Heat shock protein 20 (HSP20) serves as a chaperone and plays roles in numerous biological processes, but the codon usage bias (CUB) of its genes has remained unexplored. This study identified 140 HSP20 genes from four cruciferous species, Arabidopsis thaliana, Brassica napus, Brassica rapa, and Camelina sativa, that were identified from the Ensembl plants database, and we subsequently investigated their CUB. As a result, the base composition analysis revealed that the overall GC content of HSP20 genes was below 50%. The overall GC content significantly correlated with the constituents at three codon positions, implying that both mutation pressure and natural selection might contribute to the CUB. The relatively high ENc values suggested that the CUB of the HSP20 genes in four cruciferous species was relatively weak. Subsequently, ENc exhibited a negative correlation with gene expression levels. Analyses, including ENc-plot analysis, neutral analysis, and PR2 bias, revealed that natural selection mainly shaped the CUB patterns of HSP20 genes in these species. In addition, a total of 12 optimal codons (ΔRSCU > 0.08 and RSCU > 1) were identified across the four species. A neighbor-joining phylogenetic analysis based on coding sequences (CDS) showed that the 140 HSP20 genes were strictly and distinctly clustered into 12 subfamilies. Principal component analysis and cluster analysis based on relative synonymous codon usage (RSCU) values supported the fact that the CUB pattern was consistent with the genetic relationship at the gene level and (or) species levels. These results will not only enrich the HSP20 gene resource but also advance our understanding of the CUB of HSP20 genes, which may underlie the theoretical basis for exploration of their genetic and evolutionary pattern.
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Affiliation(s)
| | | | | | | | | | | | - Jiayu Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (H.J.); (J.L.); (Y.C.); (X.Y.); (C.L.); (L.S.)
| | - Hai Liao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (H.J.); (J.L.); (Y.C.); (X.Y.); (C.L.); (L.S.)
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2
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Wang P, Zhang T, Li Y, Zhao X, Liu W, Hu Y, Wang J, Zhou Y. Comprehensive analysis of Dendrobium catenatum HSP20 family genes and functional characterization of DcHSP20-12 in response to temperature stress. Int J Biol Macromol 2024; 258:129001. [PMID: 38158058 DOI: 10.1016/j.ijbiomac.2023.129001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
Heat shock proteins (HSPs) are a class of protective proteins in response to abiotic stress in plants, and HSP20 plays an essential role in response to temperature stress. However, there are few studies on HSP20 in Dendrobium catenatum. In this study, 18 DcHSP20 genes were identified from the D. catenatum genome. Phylogenetic analysis showed that DcHSP20s could be classified into six subgroups, each member of which has similar conserved motifs and gene structures. Gene expression analysis of 18 DcHSP20 genes revealed that they exhibited variable expression patterns in different plant tissues. Meanwhile, all 18 DcHSP20 genes were induced to be up-regulated under high temperature, while six genes (DcHSP20-2/9/10/12/16/17) were significantly up-regulated under low temperature. Moreover, combining gene expression under high and low temperature stress, the DcHSP20-12 gene was cloned for functional analysis. The germination ratios, fresh weights, root lengths of two DcHSP20-12-overexpressing transgenic Arabidopsis thaliana lines were significantly higher, but MDA contents were lower than that of wild-type (WT) plants under heat and cold stresses, displayed enhanced thermotolerance and cold-resistance. These results lay a foundation for the functional characterization of DcHSP20s and provide a candidate gene, DcHSP20-12, for improving the tolerance of D. catenatum to temperature stress in the future.
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Affiliation(s)
- Peng Wang
- Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan, China; Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China
| | - Tingting Zhang
- Xiangyang Academy of Agricultural Sciences, Xiangyang 441057, Hubei, China
| | - Yuxin Li
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China
| | - Xi Zhao
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China
| | - Wen Liu
- Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan, China; Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China
| | - Yanping Hu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China; Key Laboratory of Vegetable Biology of Hainan Province, Hainan Vegetable Breeding Engineering Technology Research Center, The Institute of Vegetables, Hainan Academy of Agricultural Sciences, Haikou 571199, Hainan, China
| | - Jian Wang
- Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan, China; Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China
| | - Yang Zhou
- Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan, China; Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry (School of Agricultural and Rural Affairs, School of Rural Revitalization), Hainan University, Haikou 570228, Hainan, China.
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Yu X, Zhao Y, Wang Y, Zou Z, Li F. Maize ZmHSP90 plays a role in acclimation to salt stress. PeerJ 2023; 11:e15819. [PMID: 37810777 PMCID: PMC10557940 DOI: 10.7717/peerj.15819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 07/10/2023] [Indexed: 10/10/2023] Open
Abstract
Background Maize is sensitive to salt stress, especially during the germination and seedling stages. Methods We conducted germination experiments on 60 maize materials under salt stress, and screened out the most salt-tolerant and salt-sensitive varieties based on germination indicators. Afterwards, transcriptome analysis was performed to screen for key regulators in the plumule and flag leaf at the germination and seedling stages, respectively. Following that, transgenic tobacco was developed to expose the roles and mechanisms of the candidate genes, enabling a deeper investigation of their functions. Results Out of the 60 inbred lines of maize, "975-12" exhibits the highest level of salt tolerance, while "GEMS64" displays the lowest. The application of salt stress resulted in a significant increase in the levels of antioxidant enzymes in both "975-12" and "GEMS64". ABA signal transduction and jasmonic acid pathways were the pathways that mainly affected by salt stress. In addition, a significant finding has been made indicating that when exposed to high levels of salt stress, the expression of ZmHSP90 in '975-12' increased while in 'GEMS64' decreased. Furthermore, in tobacco plants overexpressing ZmHSP90, there was an increase in antioxidant enzyme activity associated with salt tolerance. ZmHSP90 enhanced the expression levels of NtSOS1, NtHKT1, and NtNHX1 as compared to those in the salt treatment, causing the maintenance of Na+ and K+ homeostasis, suggesting that high expression of ZmHSP90 was conducive to regulate Na+ transporters to maintain K+/Na+ balanced in tobacco.
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Affiliation(s)
- Xinyan Yu
- Shenyang Agricultural University, Shenyang, China
- Win-all High-Tech Seed Company Limited, Hefei, China
| | - Yanxin Zhao
- Maize Research Center of Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing, China
| | - Yun Wang
- Shenyang Agricultural University, Shenyang, China
| | - Zhiqing Zou
- Win-all High-Tech Seed Company Limited, Hefei, China
| | - Fenghai Li
- Shenyang Agricultural University, Shenyang, China
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Cao X, Sui J, Li H, Yue W, Liu T, Hou D, Liang J, Wu Z. Enhancing heat stress tolerance in Lanzhou lily ( Lilium davidii var. unicolor) with Trichokonins isolated from Trichoderma longibrachiatum SMF2. FRONTIERS IN PLANT SCIENCE 2023; 14:1182977. [PMID: 37351207 PMCID: PMC10282843 DOI: 10.3389/fpls.2023.1182977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/10/2023] [Indexed: 06/24/2023]
Abstract
Lanzhou lily (Lilium davidii var. unicolor) is a renowned edible crop produced in China and relatively sensitive to high temperature (HT). Trichokonins (TKs) are antimicrobial peptaibols secreted from Trichoderma longibrachiatum strain SMF2. Here, we report that TKs application improves the thermotolerance of Lanzhou lily. The activity of the antioxidant enzyme system (SOD, CAT, and POD), the level of heat-resistance-associated phytohormones (ABA, SA, and JA), the relative water content (RWC), the content of chlorophyll (Chl), and the net photosynthetic rate (P n) were promoted by TKs treatment in Lanzhou lily plants subjected to heat stress (HS). TKs treatment also mitigated cell injury as shown by a lower accumulation of malondialdehyde (MDA) and relative electrolyte leakage (REL) under HS conditions. RNA-seq data analysis showed that more than 4.5 times differentially expressed genes (DEGs) responded to TKs treatment under HS compared to non-HS, and TKs treatment reduced protein folding and enhanced cellular repair function under HS conditions. The analyses of DEGs involved in hormone (ABA, SA and JA) synthesis and signaling pathways suggested that TKs might improve Lanzhou lily heat tolerance by promoting ABA synthesis and signal transduction. TKs highly induced DEGs of the HSF-HSP pathway under HS, in which HSFA2 accounted for most of the HSF family. Furthermore, TKs treatment resulted in the upregulation of heat-protective genes LzDREB2B, LzHsfA2a, LzMBF1c, LzHsp90, and LzHsp70 involved in HSF-HSP signal pathway after long-term HS. LzHsfA2a-1 likely plays a key role in acquisition of TKs-induced thermotolerance of Lanzhou lily as evidenced by the sustained response to HS, the enhanced response to TKs treatment under long-term HS, and the high sequence similarity to LlHsfA2a which is a key regulator for the improvement of heat tolerance in Lilium longiflorum. Our results reveal the underlying mechanisms of TKs-mediated thermotolerance in Lanzhou lily and highlight an attractive approach to protecting crop plants from damage caused by HS in a global warming future.
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Affiliation(s)
- Xing Cao
- Department of Environmental Art Design, College of Architecture, Yantai University, Yantai, China
| | - Juanjuan Sui
- Engineering Technology Research Center of Anti-aging Chinese Herbal Medicine, Biology and Food Engineering College, Fuyang Normal University, Fuyang, China
| | - Haiyan Li
- Department of Environmental Art Design, College of Architecture, Yantai University, Yantai, China
| | - Wenxiu Yue
- Department of Environmental Art Design, College of Architecture, Yantai University, Yantai, China
| | - Tao Liu
- Department of Environmental Art Design, College of Architecture, Yantai University, Yantai, China
| | - Dong Hou
- Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Jiahui Liang
- Institute of Grassland, Flowers and Ecology, Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ze Wu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, China
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Li M, Tang T, Yuan F, Zhang Y, Li F, Liu F. Protective effects of small heat shock proteins in Daphnia magna against heavy metal exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 848:157565. [PMID: 35907523 DOI: 10.1016/j.scitotenv.2022.157565] [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: 04/25/2022] [Revised: 07/08/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Daphnia magna is one of the most commonly used model organisms to assess toxicity of heavy metal and other xenobiotics. However, the lack of knowledge about important stress-resistant molecules limits our understanding of the alteration of phenotypic and physiological traits of D. magna upon stress exposures. In this study, we focused on a chaperone family of small heat shock protein (sHSP) that has been found in archaea, bacteria and eukaryotes and plays an important role in stress tolerance. A total of eleven sHSP genes (termed DmsHSP1 - DmsHSP11) were identified from the D. magna genome, whose expression profiles during exposure to heavy metal (Cd2+, Cu2+ and Zn2+) and a few other potential pollutants were evaluated via qRT-PCR and RNA-Seq analysis. The results highlighted the predominant role of DmsHSP1 with the highest basal expression level in adults and robust upregulation upon exposure to heavy metals (Cu2+ > Cd2+ > Zn2+). In vivo, recombinant protein rDmsHSP1-21 and rDmsHSP11-12.8 could not only prevent model substrates agglutination induced by heavy metals or reducer dithiotreitol (DTT), but also protect tissue proteins and enzymes from denaturation and inactivation caused by heavy metals or high temperature. Ectopically expression of DmsHSP1-21 or DmsHSP11-12.8 in E. coli conferred host enhanced resistance against various abiotic stresses including Cd2+, Cu2+ and phenazine methosulfate (PMS). Knockdown of DmsHSP1-21 by RNAi, but not for DmsHSP11-12.8, significantly increased the vulnerability of D. magna to heavy metal exposure. Our work provides systematic information on the evolution and function of sHSPs in D. magna and leads to important insights into the mechanisms by which D. magna survive in adverse environments.
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Affiliation(s)
- Muyi Li
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Ting Tang
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Fengyu Yuan
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Yuming Zhang
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Fengchao Li
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Fengsong Liu
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China.
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Qi H, Chen X, Luo S, Fan H, Guo J, Zhang X, Ke Y, Yang P, Yu F. Genome-Wide Identification and Characterization of Heat Shock Protein 20 Genes in Maize. Life (Basel) 2022; 12:life12091397. [PMID: 36143433 PMCID: PMC9505046 DOI: 10.3390/life12091397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 09/01/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
Maize is an important cereal crop worldwide and is sensitive to abiotic stresses in fluctuant environments that seriously affect its growth, yield, and quality. The small heat shock protein (HSP20) plays a crucial role in protecting plants from abiotic stress. However, little is known about HSP20 in maize (ZmHSP20). In this study, 44 ZmHSP20s were identified, which were unequally distributed over 10 chromosomes, and 6 pairs of ZmHSP20s were tandemly presented. The gene structure of ZmHSP20s was highly conserved, with 95% (42) of the genes having no more than one intron. The analysis of the cis-element in ZmHSP20s promoter demonstrated large amounts of elements related to hormonal and abiotic stress responses, including abscisic acid (ABA), high temperature, and hypoxia. The ZmHSP20s protein had more than two conserved motifs that were predictably localized in the cytoplasm, nucleus, endoplasmic reticulum, peroxisome, mitochondria, and plasma. Phylogenetic analysis using HSP20s in Arabidopsis, rice, maize, and Solanum tuberosum indicated that ZmHSP20s were classified into 11 categories, of which each category had unique subcellular localization. Approximately 80% (35) of ZmHSP20 were upregulated under heat stress at the maize seedling stage, whereas the opposite expression profiling of 10 genes under 37 and 48 °C was detected. A total of 20 genes were randomly selected to investigate their expression under treatments of ABA, gibberellin (GA), ethylene, low temperature, drought, and waterlogging, and the results displayed that more than half of these genes were downregulated while ZmHSP20-3, ZmHSP20-7, ZmHSP20-24, and ZmHSP20-44 were upregulated under 1 h treatment of ethylene. A yeast-one-hybrid experiment was conducted to analyze the binding of four heat stress transcription factors (ZmHSFs) with eight of the ZmHSP20s promoter sequences, in which ZmHSF3, ZmHSF13, and ZmHSF17 can bind to most of these selected ZmHSP20s promoters. Our results provided a valuable resource for studying HSP20s function and offering candidates for genetic improvement under abiotic stress.
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Affiliation(s)
- Huanhuan Qi
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Xiaoke Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Sen Luo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Hongzeng Fan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Jinghua Guo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Xuehai Zhang
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Yinggen Ke
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Pingfang Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Feng Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
- Correspondence:
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7
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Huang J, Hai Z, Wang R, Yu Y, Chen X, Liang W, Wang H. Genome-wide analysis of HSP20 gene family and expression patterns under heat stress in cucumber ( Cucumis sativus L.). FRONTIERS IN PLANT SCIENCE 2022; 13:968418. [PMID: 36035708 PMCID: PMC9412230 DOI: 10.3389/fpls.2022.968418] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 07/27/2022] [Indexed: 05/03/2023]
Abstract
Cucumber is an important vegetable in China, and its yield and cultivation area are among the largest in the world. Excessive temperatures lead to high-temperature disorder in cucumber. Heat shock protein 20 (HSP20), an essential protein in the process of plant growth and development, is a universal protective protein with stress resistance. HSP20 plays crucial roles in plants under stress. In this study, we characterized the HSP20 gene family in cucumber by studying chromosome location, gene duplication, phylogenetic relationships, gene structure, conserved motifs, protein-protein interaction (PPI) network, and cis-regulatory elements. A total of 30 CsHSP20 genes were identified, distributed across 6 chromosomes, and classified into 11 distinct subgroups based on conserved motif composition, gene structure analyses, and phylogenetic relationships. According to the synteny analysis, cucumber had a closer relationship with Arabidopsis and soybean than with rice and maize. Collinearity analysis revealed that gene duplication, including tandem and segmental duplication, occurred as a result of positive selection and purifying selection. Promoter analysis showed that the putative promoters of CsHSP20 genes contained growth, stress, and hormone cis-elements, which were combined with protein-protein interaction networks to reveal their potential function mechanism. We further analyzed the gene expression of CsHSP20 genes under high stress and found that the majority of the CsHSP20 genes were upregulated, suggesting that these genes played a positive role in the heat stress-mediated pathway at the seedling stage. These results provide comprehensive information on the CsHSP20 gene family in cucumber and lay a solid foundation for elucidating the biological functions of CsHSP20. This study also provides valuable information on the regulation mechanism of the CsHSP20 gene family in the high-temperature resistance of cucumber.
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Affiliation(s)
| | | | | | | | | | | | - Huahua Wang
- College of Life Science, Henan Normal University, Xinxiang, China
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8
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Wu Y, Lv S, Zhao Y, Chang C, Hong W, Jiang J. SlHSP17.7 Ameliorates Chilling Stress-Induced Damage by Regulating Phosphatidylglycerol Metabolism and Calcium Signal in Tomato Plants. PLANTS (BASEL, SWITZERLAND) 2022; 11:1865. [PMID: 35890502 PMCID: PMC9324031 DOI: 10.3390/plants11141865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 11/16/2022]
Abstract
Tomatoes (Solanum lycopersicum L.) are sensitive to chilling temperatures between 0 °C and 12 °C owing to their tropical origin. SlHSP17.7, a cytoplasmic heat shock protein, interacts with cation/calcium exchanger 1-like (SlCCX1-like) protein and promotes chilling tolerance in tomato fruits (Zhang, et al., Plant Sci., 2020, 298, 1-12). The overexpression of SlHSP17.7 can also promote cold tolerance in tomato plants, but its specific mechanism remains unclear. In this study, we show that the overexpression of SlHSP17.7 in tomato plants enhances chilling tolerance with better activity of photosystem II (PSII). Metabolic analyses revealed that SlHSP17.7 improved membrane fluidity by raising the levels of polyunsaturated fatty acids. Transcriptome analyses showed that SlHSP17.7 activated Ca2+ signaling and induced the expression of C-repeat binding factor (CBF) genes, which in turn inhibited the production of reactive oxygen species (ROS). The gene coexpression network analysis showed that SlHSP17.7 is coexpressed with SlMED26b. SlMED26b silencing significantly lowered OE-HSP17.7 plants' chilling tolerance. Thus, SlHSP17.7 modulates tolerance to chilling via both membrane fluidity and Ca2+-mediated CBF pathway in tomato plants.
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Affiliation(s)
- Yuanyuan Wu
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Institute of Vegetable Science, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Shuwen Lv
- Institute of Vegetable Science, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Yaran Zhao
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Chenliang Chang
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Wei Hong
- Shenyang Institute of Technology, Shenyang 113122, China
| | - Jing Jiang
- Key Laboratory of Protected Horticulture of Education Ministry, Shenyang 110866, China
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Wu J, Gao T, Hu J, Zhao L, Yu C, Ma F. Research advances in function and regulation mechanisms of plant small heat shock proteins (sHSPs) under environmental stresses. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:154054. [PMID: 35202686 DOI: 10.1016/j.scitotenv.2022.154054] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 05/27/2023]
Abstract
Plants respond to various stresses by triggering the expression of genes that encode proteins involved in plant growth, fruit ripening, cellular protein homeostasis, and tolerance systems. sHSPs, a subfamily of heat shock proteins (HSPs), can be expressed in plants to inhibit abnormal aggregation of proteins and protect normal proteins by interacting with folding target proteins, protect cell integrity, and improve resistance under various adverse conditions. Thus, sHSPs have significant influences on seed germination and plant development. In this review, the classification, structure, and functions of sHSP family members in plants are systematically summarized, with emphasis on their roles in promoting fruit ripening and plant growth by reducing the accumulation of ROS, improving the survival rate of plants and the antioxidant activity, and protecting photosynthesis under biotic and abiotic stresses. Meanwhile, the production and regulatory mechanisms of sHSPs are described in detail. Heat shock factors, long non-coding RNA (lncRNAs), microRNA (miRNAs), and FK506 binding proteins are related to the production process of sHSPs. Molecular chaperone complex HSP70/100, plastidic proteins, and abscisic acid (ABA) are involved in the regulatory mechanisms of sHSPs. Besides, scientific efforts and practices for improving plant stress resistance have carried out the constitutive expression of sHSPs in transgenic plants in recent years. It is a powerful path for inducing the protective mechanisms of plants under various stresses. Therefore, exploring the role of sHSPs in the plant defense system paves a way for comprehensively unraveling plant tolerance in response to biotic and abiotic stress.
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Affiliation(s)
- Jieting Wu
- School of Environmental Science, Liaoning University, Shenyang 110036, People's Republic of China.
| | - Tian Gao
- School of Environmental Science, Liaoning University, Shenyang 110036, People's Republic of China
| | - Jianing Hu
- Dalian Neusoft University of Information, Dalian 116032, People's Republic of China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Chang Yu
- School of Environmental Science, Liaoning University, Shenyang 110036, People's Republic of China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China.
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Sun Y, Hu D, Xue P, Wan X. Identification of the DcHsp20 gene family in carnation (Dianthus caryophyllus) and functional characterization of DcHsp17.8 in heat tolerance. PLANTA 2022; 256:2. [PMID: 35624182 DOI: 10.1007/s00425-022-03915-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 05/11/2022] [Indexed: 05/09/2023]
Abstract
33 heat shock protein 20 (Hsp20) genes were identified from the carnation genome whose expression were altered by abiotic stresses. DcHsp17.8 may function to improve the heat resistance of Arabidopsis. Heat shock proteins 20 (Hsp20s) mainly function as molecular chaperones that play crucial roles in relieving abiotic stresses such as heat stress. In this study, we identified and characterized 33 DcHsp20 genes from the carnation genome that were classified into 9 subfamilies. Gene structure analysis showed that 25 DcHsp20 genes contained 1 intron whilst the remaining 8 DcHsp20 genes did not contain introns. Motif analysis found that DcHsp20 proteins were relatively conserved. Cis-regulatory elements analysis of the Hsp20 promoters revealed a number of cis-regulatory elements that regulate growth and development, hormone and stress responses. Gene expression analysis revealed that DcHsp20 genes had multiple response patterns to heat stress. The largest range of induction occurred in DcHsp17.8 after 1 h of heat stress. Under cold stress, or treatment with saline or abscisic acid, the expression of most DcHsp20 genes was inhibited. To further understand the function of DcHsp20 genes in response to heat stress, we overexpressed DcHsp17.8 in Arabidopis and the plants showed improved heat tolerance, O2- and H2O2 activities and photosynthetic capacity with reduced relative electrolyte leakage and malondialdehyde content. Gene expression analysis revealed that DcHsp17.8 modulated the expression of genes involved in antioxidant enzyme synthesis. Our data provided a solid foundation for the further detailed study of DcHsp20 genes.
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Affiliation(s)
- Yuying Sun
- College of Landscape and Forestry, Qingdao Agricultural University, No.100, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Diandian Hu
- College of Landscape and Forestry, Qingdao Agricultural University, No.100, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Pengcheng Xue
- College of Landscape and Forestry, Qingdao Agricultural University, No.100, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Xueli Wan
- College of Landscape and Forestry, Qingdao Agricultural University, No.100, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China.
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11
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Kang Y, Lee K, Hoshikawa K, Kang M, Jang S. Molecular Bases of Heat Stress Responses in Vegetable Crops With Focusing on Heat Shock Factors and Heat Shock Proteins. FRONTIERS IN PLANT SCIENCE 2022; 13:837152. [PMID: 35481144 PMCID: PMC9036485 DOI: 10.3389/fpls.2022.837152] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/09/2022] [Indexed: 05/09/2023]
Abstract
The effects of the climate change including an increase in the average global temperatures, and abnormal weather events such as frequent and severe heatwaves are emerging as a worldwide ecological concern due to their impacts on plant vegetation and crop productivity. In this review, the molecular processes of plants in response to heat stress-from the sensing of heat stress, the subsequent molecular cascades associated with the activation of heat shock factors and their primary targets (heat shock proteins), to the cellular responses-have been summarized with an emphasis on the classification and functions of heat shock proteins. Vegetables contain many essential vitamins, minerals, antioxidants, and fibers that provide many critical health benefits to humans. The adverse effects of heat stress on vegetable growth can be alleviated by developing vegetable crops with enhanced thermotolerance with the aid of various genetic tools. To achieve this goal, a solid understanding of the molecular and/or cellular mechanisms underlying various responses of vegetables to high temperature is imperative. Therefore, efforts to identify heat stress-responsive genes including those that code for heat shock factors and heat shock proteins, their functional roles in vegetable crops, and also their application to developing vegetables tolerant to heat stress are discussed.
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Affiliation(s)
- Yeeun Kang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
| | - Kwanuk Lee
- National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Wanju-gun, South Korea
| | - Ken Hoshikawa
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Japan
| | | | - Seonghoe Jang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
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12
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Feki K, Tounsi S, Mrabet M, Mhadhbi H, Brini F. Recent advances in physiological and molecular mechanisms of heavy metal accumulation in plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:64967-64986. [PMID: 34599711 DOI: 10.1007/s11356-021-16805-y] [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: 04/29/2021] [Accepted: 09/24/2021] [Indexed: 05/27/2023]
Abstract
Among abiotic stress, the toxicity of metals impacts negatively on plants' growth and productivity. This toxicity promotes various perturbations in plants at different levels. To withstand stress, plants involve efficient mechanisms through the implication of various signaling pathways. These pathways enhance the expression of many target genes among them gene coding for metal transporters. Various metal transporters which are localized at the plasma membrane and/or at the tonoplast are crucial in metal stress response. Furthermore, metal detoxification is provided by metal-binding proteins like phytochelatins and metallothioneins. The understanding of the molecular basis of metal toxicities signaling pathways and tolerance mechanisms is crucial for genetic engineering to produce transgenic plants that enhance phytoremediation. This review presents an overview of the recent advances in our understanding of metal stress response. Firstly, we described the effect of metal stress on plants. Then, we highlight the mechanisms involved in metal detoxification and the importance of the regulation in the response to heavy metal stress. Finally, we mentioned the importance of genetic engineering for enhancing the phytoremediation technique. In the end, the response to heavy metal stress is complex and implicates various components. Thus, further studies are needed to better understand the mechanisms involved in response to this abiotic stress.
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Affiliation(s)
- Kaouthar Feki
- Laboratory of Legumes and Sustainable Agrosystem (L2AD), Center of Biotechnology of Borj-Cédria, BP901, 2050, Hammam-Lif, Tunisia
| | - Sana Tounsi
- Biotechnology and Plant Improvement Laboratory, Center of Biotechnology of Sfax (CBS), University of Sfax, B.P "1177", 3018, Sfax, Tunisia
| | - Moncef Mrabet
- Laboratory of Legumes and Sustainable Agrosystem (L2AD), Center of Biotechnology of Borj-Cédria, BP901, 2050, Hammam-Lif, Tunisia
| | - Haythem Mhadhbi
- Laboratory of Legumes and Sustainable Agrosystem (L2AD), Center of Biotechnology of Borj-Cédria, BP901, 2050, Hammam-Lif, Tunisia
| | - Faiçal Brini
- Biotechnology and Plant Improvement Laboratory, Center of Biotechnology of Sfax (CBS), University of Sfax, B.P "1177", 3018, Sfax, Tunisia.
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13
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Wang X, Zheng Y, Chen B, Zhi C, Qiao L, Liu C, Pan Y, Cheng Z. Genome-wide identification of small heat shock protein (HSP20) homologs in three cucurbit species and the expression profiles of CsHSP20s under several abiotic stresses. Int J Biol Macromol 2021; 190:827-836. [PMID: 34492251 DOI: 10.1016/j.ijbiomac.2021.08.222] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 12/22/2022]
Abstract
Small heat shock protein (HSP20) genes play important roles in biological processes of plants. In this study, a total of 47 CsHSP20 genes, 45 CmHSP20 genes, and 47 ClHSP20 genes were genome-wide identified by 'hmmsearch' and BLASTP using the latest versions of cucumber, melon, and watermelon genomes, respectively. According to the phylogenetic relationships and predicted subcellular localizations, HSP20s of these three cucurbit species were divided into 8 subfamilies (CI-CIV, CP, ER, M, and PX), in which some HSP20s were closely related with each other based on the collinearity analysis. Specific expression patterns of CsHSP20s were checked in 10 different tissues of cucumber plants. RNA-seq analysis of transcript levels, combined with cis-acting elements and GO enrichment analysis suggested that CsHSP20s were responsive to several different types of abiotic stresses, including chilling, temperature and photoperiod, high temperature and high humidity, and salinity. In conclusion, results of this work not only provided valuable information for exploring the regulating mechanisms of CsHSP20s in responding to abiotic stresses in cucumber, but also shed light on the potentially evolutional relations among cucumber, melon, and watermelon from a perspective of comparative genomics that specified on HSP20 gene families.
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Affiliation(s)
- Xi'ao Wang
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Yujie Zheng
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Birong Chen
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Chengchen Zhi
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Lijun Qiao
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Ce Liu
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Yupeng Pan
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Zhihui Cheng
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
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14
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Li N, Jiang M, Li P, Li X. Identification, expression, and functional analysis of Hsf and Hsp20 gene families in Brachypodium distachyon under heat stress. PeerJ 2021; 9:e12267. [PMID: 34703676 PMCID: PMC8489411 DOI: 10.7717/peerj.12267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/16/2021] [Indexed: 12/15/2022] Open
Abstract
Background The heat shock factor (Hsf) and small heat shock protein (sHsp, also called Hsp20) complex has been identified as a primary component in the protection of plant cells from ubiquitous stresses, particularly heat stress. Our study aimed to characterize and analyze the Hsf and Hsp genes in Brachypodium distachyon, an annual temperate grass and model plant in cereal and grass studies. Results We identified 24 Hsf and 18 Hsp20 genes in B. distachyon and explored their evolution in gene organization, sequence features, chromosomal localization, and gene duplication. Our phylogenetic analysis showed that BdHsfs could be divided into three categories and BdHsp20s into ten subfamilies. Further analysis showed that the 3’UTR length of BdHsp20 genes had a negative relationship with their expression under heat stress. Expression analyses indicated that BdHsp20s and BdHsfs were strongly and rapidly induced by high-temperature treatment. Additionally, we constructed a complex regulatory network based on their expression patterns under heat stress. Morphological analysis suggested that the overexpression of five BdHsp20 genes enhanced the seed germination rate and decreased cell death under high temperatures. Conclusion Ultimately, our study provided important evolutionary and functional characterizations for future research on the regulatory mechanisms of BdHsp20s and BdHsfs in herbaceous plants under environmental stress.
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Affiliation(s)
- Na Li
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China.,College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Min Jiang
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China.,Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), School of Life Sciences, Fudan University, Shanghai, China
| | - Peng Li
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China
| | - Xiwen Li
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China.,College of Life Sciences, Shanghai Normal University, Shanghai, China
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15
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Park M, Choi W, Shin SY, Moon H, Lee D, Gho YS, Jung KH, Jeon JS, Shin C. Identification of Genes and MicroRNAs Affecting Pre-harvest Sprouting in Rice ( Oryza sativa L.) by Transcriptome and Small RNAome Analyses. FRONTIERS IN PLANT SCIENCE 2021; 12:727302. [PMID: 34421977 PMCID: PMC8377729 DOI: 10.3389/fpls.2021.727302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 07/19/2021] [Indexed: 06/02/2023]
Abstract
Pre-harvest sprouting (PHS) is one of the primary problems associated with seed dormancy in rice (Oryza sativa L.). It causes yield loss and reduces grain quality under unpredictable humid conditions at the ripening stage, thus affecting the economic value of the rice crop. To resolve this issue, understanding the molecular mechanism underlying seed dormancy in rice is important. Recent studies have shown that seed dormancy is affected by a large number of genes associated with plant hormone regulation. However, understanding regarding the effect of heat stress on seed dormancy and plant hormones is limited. This study compared the transcriptome and small RNAome of the seed embryo and endosperm of two contrasting japonica rice accessions, PHS susceptible (with low seed dormancy) and PHS resistant (with high seed dormancy), at three different maturation stages. We found that 9,068 genes and 35 microRNAs (miRNAs) were differentially expressed in the embryo, whereas 360 genes were differentially expressed in the endosperm. Furthermore, we identified and verified the candidate genes associated with seed dormancy and heat stress-related responses in rice using quantitative real-time PCR. We newly discovered eight hormone-related genes, four heat shock protein-related genes, and two miRNAs potentially involved in PHS. These findings provide a strong foundation for understanding the dynamics of transcriptome and small RNAome of hormone- and heat stress-related genes, which affect PHS during seed maturation.
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Affiliation(s)
- Minsu Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
- Research Center for Plant Plasticity, Seoul National University, Seoul, South Korea
| | - Woochang Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Sang-Yoon Shin
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Hongman Moon
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Dowhan Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Yun-Shil Gho
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin, South Korea
| | - Ki-Hong Jung
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin, South Korea
| | - Jong-Seong Jeon
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin, South Korea
| | - Chanseok Shin
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
- Research Center for Plant Plasticity, Seoul National University, Seoul, South Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, South Korea
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16
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Guihur A, Fauvet B, Finka A, Quadroni M, Goloubinoff P. Quantitative proteomic analysis to capture the role of heat-accumulated proteins in moss plant acquired thermotolerance. PLANT, CELL & ENVIRONMENT 2021; 44:2117-2133. [PMID: 33314263 PMCID: PMC8359368 DOI: 10.1111/pce.13975] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/03/2020] [Accepted: 12/03/2020] [Indexed: 05/08/2023]
Abstract
At dawn of a scorching summer day, land plants must anticipate upcoming extreme midday temperatures by timely establishing molecular defences that can keep heat-labile membranes and proteins functional. A gradual morning pre-exposure to increasing sub-damaging temperatures induces heat-shock proteins (HSPs) that are central to the onset of plant acquired thermotolerance (AT). To gain knowledge on the mechanisms of AT in the model land plant Physcomitrium patens, we used label-free LC-MS/MS proteomics to quantify the accumulated and depleted proteins before and following a mild heat-priming treatment. High protein crowding is thought to promote protein aggregation, whereas molecular chaperones prevent and actively revert aggregation. Yet, we found that heat priming (HP) did not accumulate HSP chaperones in chloroplasts, although protein crowding was six times higher than in the cytosol. In contrast, several HSP20s strongly accumulated in the cytosol, yet contributing merely 4% of the net mass increase of heat-accumulated proteins. This is in poor concordance with their presumed role at preventing the aggregation of heat-labile proteins. The data suggests that under mild HP unlikely to affect protein stability. Accumulating HSP20s leading to AT, regulate the activity of rare and specific signalling proteins, thereby preventing cell death under noxious heat stress.
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Affiliation(s)
- Anthony Guihur
- Department of Plant Molecular Biology, Faculty of Biology and MedicineUniversity of LausanneLausanneSwitzerland
| | - Bruno Fauvet
- Department of Plant Molecular Biology, Faculty of Biology and MedicineUniversity of LausanneLausanneSwitzerland
| | - Andrija Finka
- Department of Ecology, Agronomy and AquacultureUniversity of ZadarZadarCroatia
| | | | - Pierre Goloubinoff
- Department of Plant Molecular Biology, Faculty of Biology and MedicineUniversity of LausanneLausanneSwitzerland
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17
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Scali M, Moscatelli A, Bini L, Onelli E, Vignani R, Wang W. Protein Analysis of Pollen Tubes after the Treatments of Membrane Trafficking Inhibitors Gains Insights on Molecular Mechanism Underlying Pollen Tube Polar Growth. Protein J 2021; 40:205-222. [PMID: 33751342 PMCID: PMC8019430 DOI: 10.1007/s10930-021-09972-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2021] [Indexed: 12/03/2022]
Abstract
Pollen tube elongation is characterized by a highly-polarized tip growth process dependent on an efficient vesicular transport system and largely mobilized by actin cytoskeleton. Pollen tubes are an ideal model system to study exocytosis, endocytosis, membrane recycling, and signaling network coordinating cellular processes, structural organization and vesicular trafficking activities required for tip growth. Proteomic analysis was applied to identify Nicotiana tabacum Differentially Abundant Proteins (DAPs) after in vitro pollen tube treatment with membrane trafficking inhibitors Brefeldin A, Ikarugamycin and Wortmannin. Among roughly 360 proteins separated in two-dimensional gel electrophoresis, a total of 40 spots visibly changing between treated and control samples were identified by MALDI-TOF MS and LC-ESI-MS/MS analysis. The identified proteins were classified according to biological processes, and most proteins were related to pollen tube energy metabolism, including ammino acid synthesis and lipid metabolism, structural features of pollen tube growth as well modification and actin cytoskeleton organization, stress response, and protein degradation. In-depth analysis of proteins corresponding to energy-related pathways revealed the male gametophyte to be a reliable model of energy reservoir and dynamics.
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Affiliation(s)
- Monica Scali
- Department of Life Sciences, University of Siena, Siena, Italy.
| | | | - Luca Bini
- Department of Life Sciences, University of Siena, Siena, Italy
| | | | - Rita Vignani
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Wei Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, China
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18
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He Y, Yao Y, Li L, Li Y, Gao J, Fan M. A heat-shock 20 protein isolated from watermelon (ClHSP22.8) negatively regulates the response of Arabidopsis to salt stress via multiple signaling pathways. PeerJ 2021; 9:e10524. [PMID: 33717662 PMCID: PMC7931717 DOI: 10.7717/peerj.10524] [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: 07/22/2020] [Accepted: 11/17/2020] [Indexed: 01/09/2023] Open
Abstract
Heat-shock protein 20s (HSP20) were initially shown to play a role during heat shock stress; however, recent data indicated that HSP20 proteins are also involved in abiotic stress in plants. Watermelon is known to be vulnerable to various stressors; however, HSP20 proteins have yet to be investigated and characterized in the watermelon. In a previous study, we identified a negative regulator of salt stress response from watermelon: ClHSP22.8, a member of the HSP20 family. Quantitative real-time PCR (qRT-PCR) and promoter::β-glucuronidase (GUS) analysis revealed that ClHSP22.8 was expressed widely in a range of different tissues from the watermelon, but particularly in the roots of 7-day-old seedlings and flowers. Furthermore, qRT-PCR and GUS staining showed that the expression of ClHSP22.8 was significantly repressed by exogenous abscisic acid (ABA) and salt stress. The over-expression of ClHSP22.8 in Arabidopsis lines resulted in hypersensitivity to ABA and reduced tolerance to salt stress. Furthermore, the expression patterns of key regulators associated with ABA-dependent and independent pathways, and other stress-responsive signaling pathways, were also repressed in transgenic lines that over-expressed ClHSP22.8. These results indicated that ClHSP22.8 is a negative regulator in plant response to salt stress and occurs via ABA-dependent and independent, and other stress-responsive signaling pathways.
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Affiliation(s)
- Yanjun He
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China
| | - Yixiu Yao
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Lili Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Yulin Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Jie Gao
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Min Fan
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China
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19
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León-Vaz A, Romero LC, Gotor C, León R, Vigara J. Effect of cadmium in the microalga Chlorella sorokiniana: A proteomic study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111301. [PMID: 32949933 DOI: 10.1016/j.ecoenv.2020.111301] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/03/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
Cadmium is one of the most common heavy metals in contaminated aquatic environments and one of the most toxic contaminants for phytoplankton. Nevertheless, there are not enough studies focused on the effect of this metal in algae. Through a proteomic approach, this work shows how Cd can alter the growth, cell morphology and metabolism of the microalga Chlorella sorokiniana. Using the sequential window acquisition of all theoretical fragment ion spectra mass spectrometry (SWATH-MS), we concluded that exposure of Chlorella sorokiniana to 250 μM Cd2+ for 40 h caused downregulation of different metabolic pathways, such as photosynthesis, oxidative phosphorylation, glycolysis, TCA cycle and ribosomal proteins biosynthesis. However, photorespiration, antioxidant enzymes, gluconeogenesis, starch catabolism, and biosynthesis of glutamate, cysteine, glycine and serine were upregulated, under the same conditions. Finally, exposure to Cd also led to changes in the metabolism of carotenoids and lipids. In addition, the high tolerance of Chlorella sorokiniana to Cd points to this microalga as a potential microorganism to be used in bioremediation processes.
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Affiliation(s)
- Antonio León-Vaz
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 210071, Huelva, Spain
| | - Luis C Romero
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avenida Américo Vespucio, 49. 41092, Seville. Spain
| | - Cecilia Gotor
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avenida Américo Vespucio, 49. 41092, Seville. Spain
| | - Rosa León
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 210071, Huelva, Spain
| | - Javier Vigara
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 210071, Huelva, Spain.
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20
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Yao F, Song C, Wang H, Song S, Jiao J, Wang M, Zheng X, Bai T. Genome-Wide Characterization of the HSP20 Gene Family Identifies Potential Members Involved in Temperature Stress Response in Apple. Front Genet 2020; 11:609184. [PMID: 33240335 DOI: 10.3389/fgene.2020a.609184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/20/2020] [Indexed: 05/24/2023] Open
Abstract
Apple (Malus domestica Borkh.), an economically important tree fruit worldwide, frequently suffers from temperature stress during growth and development, which strongly affects the yield and quality. Heat shock protein 20 (HSP20) genes play crucial roles in protecting plants against abiotic stresses. However, they have not been systematically investigated in apple. In this study, we identified 41 HSP20 genes in the apple 'Golden Delicious' genome. These genes were unequally distributed on 15 different chromosomes and were classified into 10 subfamilies based on phylogenetic analysis and predicted subcellular localization. Chromosome mapping and synteny analysis indicated that three pairs of apple HSP20 genes were tandemly duplicated. Sequence analysis revealed that all apple HSP20 proteins reflected high structure conservation and most apple HSP20 genes (92.6%) possessed no introns, or only one intron. Numerous apple HSP20 gene promoter sequences contained stress and hormone response cis-elements. Transcriptome analysis revealed that 35 of 41 apple HSP20 genes were nearly unchanged or downregulated under normal temperature and cold stress, whereas these genes exhibited high-expression levels under heat stress. Subsequent qRT-PCR results showed that 12 of 29 selected apple HSP20 genes were extremely up-regulated (more than 1,000-fold) after 4 h of heat stress. However, the heat-upregulated genes were barely expressed or downregulated in response to cold stress, which indicated their potential function in mediating the response of apple to heat stress. Taken together, these findings lay the foundation to functionally characterize HSP20 genes to unravel their exact role in heat defense response in apple.
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Affiliation(s)
- Fuwen Yao
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Chunhui Song
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Hongtao Wang
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Shangwei Song
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Jian Jiao
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Miaomiao Wang
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Xianbo Zheng
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Tuanhui Bai
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
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21
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Yao F, Song C, Wang H, Song S, Jiao J, Wang M, Zheng X, Bai T. Genome-Wide Characterization of the HSP20 Gene Family Identifies Potential Members Involved in Temperature Stress Response in Apple. Front Genet 2020; 11:609184. [PMID: 33240335 PMCID: PMC7678413 DOI: 10.3389/fgene.2020.609184] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/20/2020] [Indexed: 11/13/2022] Open
Abstract
Apple (Malus domestica Borkh.), an economically important tree fruit worldwide, frequently suffers from temperature stress during growth and development, which strongly affects the yield and quality. Heat shock protein 20 (HSP20) genes play crucial roles in protecting plants against abiotic stresses. However, they have not been systematically investigated in apple. In this study, we identified 41 HSP20 genes in the apple ‘Golden Delicious’ genome. These genes were unequally distributed on 15 different chromosomes and were classified into 10 subfamilies based on phylogenetic analysis and predicted subcellular localization. Chromosome mapping and synteny analysis indicated that three pairs of apple HSP20 genes were tandemly duplicated. Sequence analysis revealed that all apple HSP20 proteins reflected high structure conservation and most apple HSP20 genes (92.6%) possessed no introns, or only one intron. Numerous apple HSP20 gene promoter sequences contained stress and hormone response cis-elements. Transcriptome analysis revealed that 35 of 41 apple HSP20 genes were nearly unchanged or downregulated under normal temperature and cold stress, whereas these genes exhibited high-expression levels under heat stress. Subsequent qRT-PCR results showed that 12 of 29 selected apple HSP20 genes were extremely up-regulated (more than 1,000-fold) after 4 h of heat stress. However, the heat-upregulated genes were barely expressed or downregulated in response to cold stress, which indicated their potential function in mediating the response of apple to heat stress. Taken together, these findings lay the foundation to functionally characterize HSP20 genes to unravel their exact role in heat defense response in apple.
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Affiliation(s)
- Fuwen Yao
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Chunhui Song
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Hongtao Wang
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Shangwei Song
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Jian Jiao
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Miaomiao Wang
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Xianbo Zheng
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Tuanhui Bai
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
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Comparative transcriptome analysis reveals heat stress-responsive genes and their signalling pathways in lilies (Lilium longiflorum vs. Lilium distichum). PLoS One 2020; 15:e0239605. [PMID: 33006971 PMCID: PMC7531851 DOI: 10.1371/journal.pone.0239605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 09/10/2020] [Indexed: 11/19/2022] Open
Abstract
The lily, a famous bulbous flower, is seriously affected by high temperatures, which affect their growth and production. To date, the signalling pathways and the molecular mechanisms related to heat response in Lilium have not been elucidated. In this study, a comparative transcriptome analysis was performed in an important thermo-tolerant flower, L. longiflorum, and a thermo-sensitive flower, L. distichum. Lily seedlings were first exposed to heat stress at 42°C for different lengths of time, and the optimal time-points (2 h and 24 h) were selected for RNA sequencing (RNA-seq). Approximately 66.51, 66.21, and 65.36 Mb clean reads were identified from three libraries of L. longiflorum (LL_CK, LL_T2h and LL_T24h, respectively) and 66.18, 66.03, and 65.16 Mb clean reads were obtained from three libraries of L. distichum (LD_CK, LD_T2h and LD_T24h, respectively) after rRNA removing. A total of 34,301 unigenes showed similarity to known proteins in the database NCBI non-redundant protein (NR), Swiss-Prot proteins, InterPro proteins, Clusters of Orthologous Groups (COG) and Kyoto Encyclopedia of Genes and Genomes (KEGG). In addition, 1,621 genes were differentially expressed in the overlapping libraries between LL_DEGs and LD_DEGs; of these genes, 352 DEGs were obviously upregulated in L. longiflorum and downregulated in L. distichum during heat stress, including 4-coumarate, CoA ligase (4CL), caffeoyl-CoA O-methyltransferase (CCoAOMT), peroxidase, pathogenesis-related protein 10 family genes (PR10s), 14-3-3 protein, leucine-rich repeat receptor-like protein kinase, and glycine-rich cell wall structural protein-like. These genes were mainly involved in metabolic pathways, phenylpropanoid biosynthesis, plant-pathogen interactions, plant hormone signal transduction, and kinase signalling pathways. Quantitative RT-PCR was performed to validate the expression profiling of these DEGs in RNA-seq data. Taken together, the results obtained in the present study provide a comprehensive sequence resource for the discovery of heat-resistance genes and reveal potential key components that are responsive to heat stress in lilies, which may help to elucidate the heat signal transcription networks and facilitate heat-resistance breeding in lily.
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Mohl JE, Fetcher N, Stunz E, Tang J, Moody ML. Comparative transcriptomics of an arctic foundation species, tussock cottongrass (Eriophorum vaginatum), during an extreme heat event. Sci Rep 2020; 10:8990. [PMID: 32488082 PMCID: PMC7265556 DOI: 10.1038/s41598-020-65693-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 05/05/2020] [Indexed: 11/25/2022] Open
Abstract
Tussock cottongrass (Eriophorum vaginatum) is a foundation species for much of the arctic moist acidic tundra, which is currently experiencing extreme effects of climate change. The Arctic is facing higher summer temperatures and extreme weather events are becoming more common. We used Illumina RNA-Seq to analyse cDNA libraries for differential expression of genes from leaves of ecologically well-characterized ecotypes of tussock cottongrass found along a latitudinal gradient in the Alaskan Arctic and transplanted into a common garden. Plant sampling was performed on a typical summer day and during an extreme heat event. We obtained a de novo assembly that contained 423,353 unigenes. There were 363 unigenes up-regulated and 1,117 down-regulated among all ecotypes examined during the extreme heat event. Of these, 26 HSP unigenes had >log2-fold up-regulation. Several TFs associated with heat stress in previous studies were identified that had >log2-fold up- or down-regulation during the extreme heat event (e.g., DREB, NAC). There was consistent variation in DEGs among ecotypes, but not specifically related to whether plants originated from taiga or tundra ecosystems. As the climate changes it is essential to determine ecotypic diversity at the genomic level, especially for widespread species that impact ecosystem function.
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Affiliation(s)
- Jonathon E Mohl
- Bioinformatics Program, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Ned Fetcher
- Institute for Environmental Science and Sustainability, Wilkes University, Wilkes-Barre, PA, 18766, USA
| | - Elizabeth Stunz
- Biological Sciences, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Jianwu Tang
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA, 02543, USA
| | - Michael L Moody
- Biological Sciences, University of Texas at El Paso, El Paso, TX, 79968, USA.
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Sun X, Zhu J, Li X, Li Z, Han L, Luo H. AsHSP26.8a, a creeping bentgrass small heat shock protein integrates different signaling pathways to modulate plant abiotic stress response. BMC PLANT BIOLOGY 2020; 20:184. [PMID: 32345221 PMCID: PMC7189581 DOI: 10.1186/s12870-020-02369-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/29/2020] [Indexed: 05/24/2023]
Abstract
BACKGROUND Small heat shock proteins (sHSPs) are critical for plant response to biotic and abiotic stresses, especially heat stress. They have also been implicated in various aspects of plant development. However, the acting mechanisms of the sHSPs in plants, especially in perennial grass species, remain largely elusive. RESULTS In this study, AsHSP26.8a, a novel chloroplast-localized sHSP gene from creeping bentgrass (Agrostis stolonifera L.) was cloned and its role in plant response to environmental stress was studied. AsHSP26.8a encodes a protein of 26.8 kDa. Its expression was strongly induced in both leaf and root tissues by heat stress. Transgenic Arabidopsis plants overexpressing AsHSP26.8a displayed reduced tolerance to heat stress. Furthermore, overexpression of AsHSP26.8a resulted in hypersensitivity to hormone ABA and salinity stress. Global gene expression analysis revealed AsHSP26.8a-modulated expression of heat-shock transcription factor gene, and the involvement of AsHSP26.8a in ABA-dependent and -independent as well as other stress signaling pathways. CONCLUSIONS Our results suggest that AsHSP26.8a may negatively regulate plant response to various abiotic stresses through modulating ABA and other stress signaling pathways.
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Affiliation(s)
- Xinbo Sun
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Junfei Zhu
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xin Li
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Zhigang Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Liebao Han
- Turfgrass Research Institute, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA.
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Wang J, Gao X, Dong J, Tian X, Wang J, Palta JA, Xu S, Fang Y, Wang Z. Over-Expression of the Heat-Responsive Wheat Gene TaHSP23.9 in Transgenic Arabidopsis Conferred Tolerance to Heat and Salt Stress. FRONTIERS IN PLANT SCIENCE 2020; 11:243. [PMID: 32211001 PMCID: PMC7069362 DOI: 10.3389/fpls.2020.00243] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 02/17/2020] [Indexed: 05/09/2023]
Abstract
The small heat shock proteins (sHSP) are stress-induced proteins with molecular weights ranging from 12 to 42 kDa that act as molecular chaperones to prevent the irreversible aggregation of denaturing proteins. In this study, we cloned the heat responsive gene TaHSP23.9 from wheat (Triticum aestivum) based on TMT-labeled quantitative proteomic analysis in our previous work and examined its function in the response of transgenic Arabidopsis to heat and salt stress. Amino acid alignment and phylogenetic tree analysis showed that TaHSP23.9 contained a typically conserved structure of the alpha-crystallin domain and is closely related to OsHSP23.2 in rice. Transient expression assays demonstrated that TaHSP23.9 is located on the endoplasmic reticulum. Quantitative real-time PCR demonstrated that TaHSP23.9 was expressed much more in filling grains under normal conditions and was significantly upregulated by heat and salt stress. Transgenic Arabidopsis plants that constitutively over-expressed TaHSP23.9 had no visible differences or adverse phenotypes compared with the wild type under normal conditions but exhibited enhanced tolerance to heat and salt stress under stress conditions. In addition, we found that the expression level of TaHSP23.9 was significantly higher in the heat-tolerant wheat varieties than in the heat-sensitive varieties. Our results suggest that TaHSP23.9 may function as a protein chaperone to positively regulate plant responses to heat and salt stress and could be developed as a molecular marker for screening heat-tolerant wheat varieties.
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Affiliation(s)
- Jun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Xin Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Jun Dong
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Xinyu Tian
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Junzhe Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Jairo A. Palta
- CSIRO Agriculture and Food, Wembley, WA, Australia
- The UWA Institute of Agriculture and School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia
| | - Shengbao Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
| | - Yan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China
| | - Zhonghua Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
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Mwando E, Han Y, Angessa TT, Zhou G, Hill CB, Zhang XQ, Li C. Genome-Wide Association Study of Salinity Tolerance During Germination in Barley ( Hordeum vulgare L.). FRONTIERS IN PLANT SCIENCE 2020; 11:118. [PMID: 32153619 PMCID: PMC7047234 DOI: 10.3389/fpls.2020.00118] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 01/27/2020] [Indexed: 05/21/2023]
Abstract
Barley seeds need to be able to germinate and establish seedlings in saline soils in Mediterranean-type climates. Despite being a major cereal crop, barley has few reported quantitative trait loci (QTL) and candidate genes underlying salt tolerance at the germination stage. Breeding programs targeting salinity tolerance at germination require an understanding of genetic loci and alleles in the current germplasm. In this study, we investigated seed-germination-related traits under control and salt stress conditions in 350 diverse barley accessions. A genome-wide association study, using ~24,000 genetic markers, was undertaken to detect marker-trait associations (MTA) and the underlying candidate genes for salinity tolerance during germination. We detected 19 loci containing 52 significant salt-tolerance-associated markers across all chromosomes, and 4 genes belonging to 4 family functions underlying the predicted MTAs. Our results provide new genetic resources and information to improve salt tolerance at germination in future barley varieties via genomic and marker-assisted selection and to open up avenues for further functional characterization of the identified candidate genes.
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Affiliation(s)
- Edward Mwando
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
| | - Yong Han
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
| | - Tefera Tolera Angessa
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
- Department of Primary Industries and Regional Development Government of Western Australia, Perth, WA, Australia
| | - Gaofeng Zhou
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Department of Primary Industries and Regional Development Government of Western Australia, Perth, WA, Australia
| | - Camilla Beate Hill
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
| | - Xiao-Qi Zhang
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
| | - Chengdao Li
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, Australia
- Department of Primary Industries and Regional Development Government of Western Australia, Perth, WA, Australia
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27
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Sewelam N, Kazan K, Hüdig M, Maurino VG, Schenk PM. The AtHSP17.4C1 Gene Expression Is Mediated by Diverse Signals that Link Biotic and Abiotic Stress Factors with ROS and Can Be a Useful Molecular Marker for Oxidative Stress. Int J Mol Sci 2019; 20:ijms20133201. [PMID: 31261879 PMCID: PMC6650836 DOI: 10.3390/ijms20133201] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 11/23/2022] Open
Abstract
Reactive oxygen species (ROS) are highly controlled signaling species that are involved in regulating gene expression in response to different environmental cues. The production of heat shock proteins (HSPs) is a key strategy that plants use to defend themselves against diverse stresses, including oxidative stress. In this study, expression patterns of the Arabidopsis HSP17.4CI gene, a cytosolic class I small HSP, were systematically profiled under different abiotic, biotic and oxidative stresses. Our data show that HSP17.4CI was early and highly induced by heat, cold, salt, drought and high-light. HSP17.4CI also showed high expression levels in Arabidopsis plants infected with the biotrophic pathogen Pseudomonas syringae, but not in response to the necrotrophic pathogens Alternaria brassicicola and Fusarium oxysporum. Oxidative stress treatments including H2O2 and the herbicide methyl viologen led to induction of HSP17.4CI. The plant hormones abscisic acid (ABA) and salicylic acid (SA) induced the expression of HSP17.4CI, whereas methyl jasmonate (MJ) did not affect the expression level of this gene. Furthermore, we found enhanced expression of HSP17.4CI in catalase mutant plants, which are deficient in catalase 2 activity and accumulate intracellular H2O2. Taken together, data presented here suggest that HSP17.4CI expression is regulated by various signals that connect biotic and abiotic stresses with ROS and can be used as a molecular marker for oxidative stress.
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Affiliation(s)
- Nasser Sewelam
- Plant Molecular Physiology and Biotechnology Group, Institute of Developmental and Molecular Biology of Plants, Heinrich Heine University, and Cluster of Excellence on Plant Sciences (CEPLAS), Düsseldorf 40225, Germany.
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Kemal Kazan
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture, Queensland Bioscience Precinct, St Lucia, Queensland 4067, Australia
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Meike Hüdig
- Plant Molecular Physiology and Biotechnology Group, Institute of Developmental and Molecular Biology of Plants, Heinrich Heine University, and Cluster of Excellence on Plant Sciences (CEPLAS), Düsseldorf 40225, Germany
| | - Veronica G Maurino
- Plant Molecular Physiology and Biotechnology Group, Institute of Developmental and Molecular Biology of Plants, Heinrich Heine University, and Cluster of Excellence on Plant Sciences (CEPLAS), Düsseldorf 40225, Germany
| | - Peer M Schenk
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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Zhao J, Yuan S, Zhou M, Yuan N, Li Z, Hu Q, Bethea FG, Liu H, Li S, Luo H. Transgenic creeping bentgrass overexpressing Osa-miR393a exhibits altered plant development and improved multiple stress tolerance. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:233-251. [PMID: 29873883 PMCID: PMC6330543 DOI: 10.1111/pbi.12960] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 05/19/2018] [Accepted: 06/03/2018] [Indexed: 05/12/2023]
Abstract
MicroRNA393 (miR393) has been implicated in plant growth, development and multiple stress responses in annual species such as Arabidopsis and rice. However, the role of miR393 in perennial grasses remains unexplored. Creeping bentgrass (Agrostis stolonifera L.) is an environmentally and economically important C3 cool-season perennial turfgrass. Understanding how miR393 functions in this representative turf species would allow the development of novel strategies in genetically engineering grass species for improved abiotic stress tolerance. We have generated and characterized transgenic creeping bentgrass plants overexpressing rice pri-miR393a (Osa-miR393a). We found that Osa-miR393a transgenics had fewer, but longer tillers, enhanced drought stress tolerance associated with reduced stomata density and denser cuticles, improved salt stress tolerance associated with increased uptake of potassium and enhanced heat stress tolerance associated with induced expression of small heat-shock protein in comparison with wild-type controls. We also identified two targets of miR393, AsAFB2 and AsTIR1, whose expression is repressed in transgenics. Taken together, our results revealed the distinctive roles of miR393/target module in plant development and stress responses between creeping bentgrass and other annual species, suggesting that miR393 would be a promising candidate for generating superior crop cultivars with enhanced multiple stress tolerance, thus contributing to agricultural productivity.
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Affiliation(s)
- Junming Zhao
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
- Animal Science and Technology CollegeSichuan Agricultural UniversityChengduSichuanChina
| | - Shuangrong Yuan
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Man Zhou
- College of Natural, Applied and Health SciencesWenzhou Kean UniversityWenzhouZhejiangChina
| | - Ning Yuan
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Zhigang Li
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Qian Hu
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Frank G. Bethea
- Department of Plant and Environmental SciencesClemson UniversityClemsonSCUSA
| | - Haibo Liu
- Department of Plant and Environmental SciencesClemson UniversityClemsonSCUSA
| | - Shigui Li
- Rice Research InstituteSichuan Agricultural UniversityChengduSichuanChina
| | - Hong Luo
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
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He Y, Fan M, Sun Y, Li L. Genome-Wide Analysis of Watermelon HSP20s and Their Expression Profiles and Subcellular Locations under Stresses. Int J Mol Sci 2018; 20:E12. [PMID: 30577505 PMCID: PMC6337729 DOI: 10.3390/ijms20010012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/10/2018] [Accepted: 12/18/2018] [Indexed: 12/01/2022] Open
Abstract
Watermelon (Citrullus lanatus L.), which is an economically important cucurbit crop that is cultivated worldwide, is vulnerable to various adverse environmental conditions. Small heat shock protein 20s (HSP20s) are the most abundant plant HSPs and they play important roles in various biotic and abiotic stress responses. However, they have not been systematically investigated in watermelon. In this study, we identified 44 watermelon HSP20 genes and analyzed their gene structures, conserved domains, phylogenetic relationships, chromosomal distributions, and expression profiles. All of the watermelon HSP20 proteins have a conserved the α-crystallin (ACD) domain. Half of the ClHSP20s arose through gene duplication events. Plant HSP20s were grouped into 18 subfamiles and a new subfamily, nucleo-cytoplasmic XIII (CXIII), was identified in this study. Numerous stress- and hormone-responsive cis-elements were detected in the putative promoter regions of the watermelon HSP20 genes. Different from that in other species, half of the watermelon HSP20s were repressed by heat stress. Plant HSP20s displayed diverse responses to different virus infections and most of the ClHSP20s were generally repressed by Cucumber green mottle mosaic virus (CGMMV). Some ClHSP20s exhibited similar transcriptional responses to abscisic acid, melatonin, and CGMMV. Subcellular localization analyses of six selected HSP20- green fluorescence protein fusion proteins revealed diverse subcellular targeting. Some ClHSP20 proteins were affected by CGMMV, as reflected by changes in the size, number, and distribution of fluorescent granules. These systematic analyses provide a foundation for elucidating the physiological functions and biological roles of the watermelon HSP20 gene family.
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Affiliation(s)
- Yanjun He
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Min Fan
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Yuyan Sun
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Lili Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
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30
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Unraveling Field Crops Sensitivity to Heat Stress:Mechanisms, Approaches, and Future Prospects. AGRONOMY-BASEL 2018. [DOI: 10.3390/agronomy8070128] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The astonishing increase in temperature presents an alarming threat to crop production worldwide. As evident by huge yield decline in various crops, the escalating drastic impacts of heat stress (HS) are putting global food production as well as nutritional security at high risk. HS is a major abiotic stress that influences plant morphology, physiology, reproduction, and productivity worldwide. The physiological and molecular responses to HS are dynamic research areas, and molecular techniques are being adopted for producing heat tolerant crop plants. In this article, we reviewed recent findings, impacts, adoption, and tolerance at the cellular, organellar, and whole plant level and reported several approaches that are used to improve HS tolerance in crop plants. Omics approaches unravel various mechanisms underlying thermotolerance, which is imperative to understand the processes of molecular responses toward HS. Our review about physiological and molecular mechanisms may enlighten ways to develop thermo-tolerant cultivars and to produce crop plants that are agriculturally important in adverse climatic conditions.
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31
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Hossain MA, Li ZG, Hoque TS, Burritt DJ, Fujita M, Munné-Bosch S. Heat or cold priming-induced cross-tolerance to abiotic stresses in plants: key regulators and possible mechanisms. PROTOPLASMA 2018; 255:399-412. [PMID: 28776104 DOI: 10.1007/s00709-017-1150-8] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 07/24/2017] [Indexed: 05/23/2023]
Abstract
Plants growing under field conditions are constantly exposed, either simultaneously or sequentially, to more than one abiotic stress factor. Plants have evolved sophisticated sensory systems to perceive a number of stress signals that allow them to activate the most adequate response to grow and survive in a given environment. Recently, cross-stress tolerance (i.e. tolerance to a second, strong stress after a different type of mild primary stress) has gained attention as a potential means of producing stress-resistant crops to aid with global food security. Heat or cold priming-induced cross-tolerance is very common in plants and often results from the synergistic co-activation of multiple stress signalling pathways, which involve reactive nitrogen species (RNS), reactive oxygen species (ROS), reactive carbonyl species (RCS), plant hormones and transcription factors. Recent studies have shown that the signalling functions of ROS, RNS and RCS, most particularly hydrogen peroxide, nitric oxide (NO) and methylglyoxal (MG), provide resistance to abiotic stresses and underpin cross-stress tolerance in plants by modulating the expression of genes as well as the post-translational modification of proteins. The current review highlights the key regulators and mechanisms underlying heat or cold priming-induced cross-stress tolerance in plants, with a focus on ROS, MG and NO signalling, as well as on the role of antioxidant and glyoxalase systems, osmolytes, heat-shock proteins (HSPs) and hormones. Our aim is also to provide a comprehensive idea on the topic for researchers using heat or cold priming-induced cross-tolerance as a mechanism to improve crop yields under multiple abiotic stresses.
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Affiliation(s)
- Mohammad Anwar Hossain
- Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
| | - Zhong-Guang Li
- School of Life Sciences, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Tahsina Sharmin Hoque
- Department of Soil Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - David J Burritt
- Department of Botany, University of Otago, Dunedin, New Zealand
| | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Faculty of Agriculture, Kagawa University, Takamatsu, Japan
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain
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Jin Y, Yang S, Im S, Jeong WJ, Park E, Choi DW. Overexpression of the Small Heat Shock Protein, PtsHSP19.3 from Marine Red Algae, Pyropia tenera (Bangiales, Rhodophyta) Enhances Abiotic Stress Tolerance in Chlamydomonas. ACTA ACUST UNITED AC 2017. [DOI: 10.5010/jpb.2017.44.3.287] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yujin Jin
- Department of Biology Education and Kumho Life Science Laboratory, Chonnam National University, Gwangju, 61186, Korea
| | - Sungwhan Yang
- Department of Biology Education and Kumho Life Science Laboratory, Chonnam National University, Gwangju, 61186, Korea
| | - Sungoh Im
- Department of Biology Education and Kumho Life Science Laboratory, Chonnam National University, Gwangju, 61186, Korea
| | - Won-Joong Jeong
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Korea
| | - EunJeong Park
- Seaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 58746, Korea
| | - Dong-Woog Choi
- Department of Biology Education and Kumho Life Science Laboratory, Chonnam National University, Gwangju, 61186, Korea
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Hasan MK, Cheng Y, Kanwar MK, Chu XY, Ahammed GJ, Qi ZY. Responses of Plant Proteins to Heavy Metal Stress-A Review. FRONTIERS IN PLANT SCIENCE 2017; 8:1492. [PMID: 28928754 PMCID: PMC5591867 DOI: 10.3389/fpls.2017.01492] [Citation(s) in RCA: 177] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/11/2017] [Indexed: 05/17/2023]
Abstract
Plants respond to environmental pollutants such as heavy metal(s) by triggering the expression of genes that encode proteins involved in stress response. Toxic metal ions profoundly affect the cellular protein homeostasis by interfering with the folding process and aggregation of nascent or non-native proteins leading to decreased cell viability. However, plants possess a range of ubiquitous cellular surveillance systems that enable them to efficiently detoxify heavy metals toward enhanced tolerance to metal stress. As proteins constitute the major workhorses of living cells, the chelation of metal ions in cytosol with phytochelatins and metallothioneins followed by compartmentalization of metals in the vacuoles as well as the repair of stress-damaged proteins or removal and degradation of proteins that fail to achieve their native conformations are critical for plant tolerance to heavy metal stress. In this review, we provide a broad overview of recent advances in cellular protein research with regards to heavy metal tolerance in plants. We also discuss how plants maintain functional and healthy proteomes for survival under such capricious surroundings.
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Affiliation(s)
- Md. Kamrul Hasan
- Department of Horticulture, Zhejiang UniversityHangzhou, China
- Department of Agricultural Chemistry, Sylhet Agricultural UniversitySylhet, Bangladesh
| | - Yuan Cheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural SciencesHangzhou, China
| | | | - Xian-Yao Chu
- Zhejiang Institute of Geological Survey, Geological Research Center for Agricultural Applications, China Geological SurveyBeijing, China
| | | | - Zhen-Yu Qi
- Agricultural Experiment Station, Zhejiang UniversityHangzhou, China
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Activation of catalase activity by a peroxisome-localized small heat shock protein Hsp17.6CII. J Genet Genomics 2017; 44:395-404. [PMID: 28869112 DOI: 10.1016/j.jgg.2017.03.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/01/2017] [Accepted: 03/27/2017] [Indexed: 01/02/2023]
Abstract
Plant catalases are important antioxidant enzymes and are indispensable for plant to cope with adverse environmental stresses. However, little is known how catalase activity is regulated especially at an organelle level. In this study, we identified that small heat shock protein Hsp17.6CII (AT5G12020) interacts with and activates catalases in the peroxisome of Arabidopsis thaliana. Although Hsp17.6CII is classified into the cytosol-located small heat shock protein subfamily, we found that Hsp17.6CII is located in the peroxisome. Moreover, Hsp17.6CII contains a novel non-canonical peroxisome targeting signal 1 (PTS1), QKL, 16 amino acids upstream from the C-terminus. The QKL signal peptide can partially locate GFP to peroxisome, and mutations in the tripeptide lead to the abolishment of this activity. In vitro catalase activity assay and holdase activity assay showed that Hsp17.6CII increases CAT2 activity and prevents it from thermal aggregation. These results indicate that Hsp17.6CII is a peroxisome-localized catalase chaperone. Overexpression of Hsp17.6CII conferred enhanced catalase activity and tolerance to abiotic stresses in Arabidopsis. Interestingly, overexpression of Hsp17.6CII in catalase-deficient mutants, nca1-3 and cat2 cat3, failed to rescue their stress-sensitive phenotypes and catalase activity, suggesting that Hsp17.6CII-mediated stress response is dependent on NCA1 and catalase activity. Overall, we identified a novel peroxisome-located catalase chaperone that is involved in plant abiotic stress resistance by activating catalase activity.
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Wang M, Zou Z, Li Q, Xin H, Zhu X, Chen X, Li X. Heterologous expression of three Camellia sinensis small heat shock protein genes confers temperature stress tolerance in yeast and Arabidopsis thaliana. PLANT CELL REPORTS 2017; 36:1125-1135. [PMID: 28455764 DOI: 10.1007/s00299-017-2143-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 04/13/2017] [Indexed: 05/24/2023]
Abstract
CsHSP17.7, CsHSP18.1, and CsHSP21.8 expressions are induced by heat and cold stresses, and CsHSP overexpression confers tolerance to heat and cold stresses in transgenic Pichia pastoris and Arabidopsis thaliana. Small heat shock proteins (sHSPs) are crucial for protecting plants against biotic and abiotic stresses, especially heat stress. However, knowledge concerning the functions of Camellia sinensis sHSP in heat and cold stresses remains poorly understood. In this study, three C. sinensis sHSP genes (i.e., CsHSP17.7, CsHSP18.1, and CsHSP21.8) were isolated and characterized using suppression subtractive hybridization (SSH) technology. The CsHSPs expression levels in C. sinensis leaves were significantly up-regulated by heat and cold stresses. Phylogenetic analyses revealed that CsHSP17.7, CsHSP18.1, and CsHSP21.8 belong to sHSP Classes I, II, and IV, respectively. Heterologous expression of the three CsHSP genes in Pichia pastoris cells enhanced heat and cold stress tolerance. When exposed to heat and cold treatments, transgenic Arabidopsis thaliana plants overexpressing CsHSP17.7, CsHSP18.1, and CsHSP21.8 had lower malondialdehyde contents, ion leakage, higher proline contents, and transcript levels of stress-related genes (e.g., AtPOD, AtAPX1, AtP5CS2, and AtProT1) compared with the control line. In addition, improved seed germination vigor was also observed in the CsHSP-overexpressing seeds under heat stress. Taken together, our results suggest that the three identified CsHSP genes play key roles in heat and cold tolerance.
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Affiliation(s)
- Mingle Wang
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhongwei Zou
- Department of Plant Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Qinghui Li
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Huahong Xin
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xujun Zhu
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xuan Chen
- Department of Chinese Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Xinghui Li
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China.
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Wang M, Zou Z, Li Q, Sun K, Chen X, Li X. The CsHSP17.2 molecular chaperone is essential for thermotolerance in Camellia sinensis. Sci Rep 2017; 7:1237. [PMID: 28450727 PMCID: PMC5430664 DOI: 10.1038/s41598-017-01407-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 03/28/2017] [Indexed: 11/25/2022] Open
Abstract
Small heat shock proteins (sHSPs) play important roles in responses to heat stress. However, the functions of sHSPs in tea plants (Camellia sinensis) remain uncharacterized. A novel sHSP gene, designated CsHSP17.2, was isolated from tea plants. Subcellular localization analyses indicated that the CsHSP17.2 protein was present in the cytosol and the nucleus. CsHSP17.2 expression was significantly up-regulated by heat stress but was unaffected by low temperature. The CsHSP17.2 transcript levels increased following salt and polyethylene glycol 6000 treatments but decreased in the presence of abscisic acid. The molecular chaperone activity of CsHSP17.2 was demonstrated in vitro. Transgenic Escherichia coli and Pichia pastoris expressing CsHSP17.2 exhibited enhanced thermotolerance. The transgenic Arabidopsis thaliana exhibited higher maximum photochemical efficiencies, greater soluble protein proline contents, higher germination rates and higher hypocotyl elongation length than the wild-type controls. The expression levels of several HS-responsive genes increased in transgenic A. thaliana plants. Additionally, the CsHSP17.2 promoter is highly responsive to high-temperature stress in A. thaliana. Our results suggest that CsHSP17.2 may act as a molecular chaperone to mediate heat tolerance by maintaining maximum photochemical efficiency and protein synthesis, enhancing the scavenging of reactive oxygen species and inducing the expression of HS-responsive genes.
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Affiliation(s)
- Mingle Wang
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhongwei Zou
- Department of Plant Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Qinghui Li
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kang Sun
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xuan Chen
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xinghui Li
- Tea Research Institute, Nanjing Agricultural University, Nanjing, 210095, China.
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Takalloo Z, Sajedi RH, Hosseinkhani S, Moazzenzade T. Artemin protects cells and proteins against oxidative and salt stress. Int J Biol Macromol 2017; 95:618-624. [DOI: 10.1016/j.ijbiomac.2016.11.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/19/2016] [Accepted: 11/21/2016] [Indexed: 10/20/2022]
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Zhao F, Zhang D, Zhao Y, Wang W, Yang H, Tai F, Li C, Hu X. The Difference of Physiological and Proteomic Changes in Maize Leaves Adaptation to Drought, Heat, and Combined Both Stresses. FRONTIERS IN PLANT SCIENCE 2016; 7:1471. [PMID: 27833614 PMCID: PMC5080359 DOI: 10.3389/fpls.2016.01471] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 09/15/2016] [Indexed: 05/18/2023]
Abstract
At the eight-leaf stage, maize is highly sensitive to stresses such as drought, heat, and their combination, which greatly affect its yield. At present, few studies have analyzed maize response to combined drought and heat stress at the eight-leaf stage. In this study, we measured certain physical parameters of maize at the eight-leaf stage when it was exposed to drought, heat, and their combination. The results showed an increase in the content of H2O2 and malondialdehyde (MDA), and in the enzyme activities of superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR), but a decrease in the quantum efficiency of photosystem II (ΦPSII). The most obvious increase or decrease in physical parameters was found under the combined stress condition. Moreover, to identify proteins differentially regulated by the three stress conditions at the eight-leaf stage, total proteins from the maize leaves were identified and quantified using multiplex iTRAQ-based quantitative proteomic and LC-MS/MS methods. In summary, the expression levels of 135, 65, and 201 proteins were significantly changed under the heat, drought and combined stress conditions, respectively. Of the 135, 65, and 201 differentially expressed proteins, 61, 28, and 16 responded exclusively to drought stress, heat stress, and combined stress, respectively. Bioinformatics analysis implied that chaperone proteins and proteases play important roles in the adaptive response of maize to heat stress and combined stress, and that the leaf senescence promoted by ethylene-responsive protein and ripening-related protein may play active roles in maize tolerance to combined drought and heat stress. The signaling pathways related to differentially expressed proteins were obviously different under all three stress conditions. Thus, the functional characterization of these differentially expressed proteins will be helpful for discovering new targets to enhance maize tolerance to stress.
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Affiliation(s)
- Feiyun Zhao
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Dayong Zhang
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural SciencesNanjing, China
| | - Yulong Zhao
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Wei Wang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Hao Yang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Fuju Tai
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Chaohai Li
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
| | - Xiuli Hu
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Life Science, Henan Agricultural UniversityZhengzhou, China
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McLoughlin F, Basha E, Fowler ME, Kim M, Bordowitz J, Katiyar-Agarwal S, Vierling E. Class I and II Small Heat Shock Proteins Together with HSP101 Protect Protein Translation Factors during Heat Stress. PLANT PHYSIOLOGY 2016; 172:1221-1236. [PMID: 27474115 PMCID: PMC5047077 DOI: 10.1104/pp.16.00536] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 07/25/2016] [Indexed: 05/23/2023]
Abstract
The ubiquitous small heat shock proteins (sHSPs) are well documented to act in vitro as molecular chaperones to prevent the irreversible aggregation of heat-sensitive proteins. However, the in vivo activities of sHSPs remain unclear. To investigate the two most abundant classes of plant cytosolic sHSPs (class I [CI] and class II [CII]), RNA interference (RNAi) and overexpression lines were created in Arabidopsis (Arabidopsis thaliana) and shown to have reduced and enhanced tolerance, respectively, to extreme heat stress. Affinity purification of CI and CII sHSPs from heat-stressed seedlings recovered eukaryotic translation elongation factor (eEF) 1B (α-, β-, and γ-subunits) and eukaryotic translation initiation factor 4A (three isoforms), although the association with CI sHSPs was stronger and additional proteins involved in translation were recovered with CI sHSPs. eEF1B subunits became partially insoluble during heat stress and, in the CI and CII RNAi lines, showed reduced recovery to the soluble cell fraction after heat stress, which was also dependent on HSP101. Furthermore, after heat stress, CI sHSPs showed increased retention in the insoluble fraction in the CII RNAi line and vice versa. Immunolocalization revealed that both CI and CII sHSPs were present in cytosolic foci, some of which colocalized with HSP101 and with eEF1Bγ and eEF1Bβ. Thus, CI and CII sHSPs have both unique and overlapping functions and act either directly or indirectly to protect specific translation factors in cytosolic stress granules.
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Affiliation(s)
- Fionn McLoughlin
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Eman Basha
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Mary E Fowler
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Minsoo Kim
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Juliana Bordowitz
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Surekha Katiyar-Agarwal
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
| | - Elizabeth Vierling
- Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003 (F.M., M.E.F., M.K., E.V.);Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721 (E.B., M.K., J.B., S.K.-A.); andDepartment of Botany, Tanta University, Tanta 31527, Egypt (E.B.)
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Singh RK, Jaishankar J, Muthamilarasan M, Shweta S, Dangi A, Prasad M. Genome-wide analysis of heat shock proteins in C4 model, foxtail millet identifies potential candidates for crop improvement under abiotic stress. Sci Rep 2016; 6:32641. [PMID: 27586959 PMCID: PMC5009299 DOI: 10.1038/srep32641] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/10/2016] [Indexed: 11/12/2022] Open
Abstract
Heat shock proteins (HSPs) perform significant roles in conferring abiotic stress tolerance to crop plants. In view of this, HSPs and their encoding genes were extensively characterized in several plant species; however, understanding their structure, organization, evolution and expression profiling in a naturally stress tolerant crop is necessary to delineate their precise roles in stress-responsive molecular machinery. In this context, the present study has been performed in C4 panicoid model, foxtail millet, which resulted in identification of 20, 9, 27, 20 and 37 genes belonging to SiHSP100, SiHSP90, SiHSP70, SiHSP60 and SisHSP families, respectively. Comprehensive in silico characterization of these genes followed by their expression profiling in response to dehydration, heat, salinity and cold stresses in foxtail millet cultivars contrastingly differing in stress tolerance revealed significant upregulation of several genes in tolerant cultivar. SisHSP-27 showed substantial higher expression in response to heat stress in tolerant cultivar, and its over-expression in yeast system conferred tolerance to several abiotic stresses. Methylation analysis of SiHSP genes suggested that, in susceptible cultivar, higher levels of methylation might be the reason for reduced expression of these genes during stress. Altogether, the study provides novel clues on the role of HSPs in conferring stress tolerance.
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Affiliation(s)
- Roshan Kumar Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi - 110067, India
| | - Jananee Jaishankar
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi - 110067, India
| | | | - Shweta Shweta
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi - 110067, India
| | - Anand Dangi
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi - 110067, India
| | - Manoj Prasad
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi - 110067, India
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Yabuta Y. Functions of heat shock transcription factors involved in response to photooxidative stresses in Arabidopsis. Biosci Biotechnol Biochem 2016; 80:1254-63. [DOI: 10.1080/09168451.2016.1176515] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Abstract
Because plants are continually exposed to various environmental stresses, they possess numerous transcription factors that regulate metabolism to adapt and acclimate to those conditions. To clarify the gene regulation systems activated in response to photooxidative stress, we isolated 76 high light and heat shock stress-inducible genes, including heat shock transcription factor (Hsf) A2 from Arabidopsis. Unlike yeast or animals, more than 20 genes encoding putative Hsfs are present in the genomes of higher plants, and they are categorized into three classes based on their structural characterization. However, the multiplicity of Hsfs in plants remains unknown. Furthermore, the individual functions of Hsfs are also largely unknown because of their genetic redundancy. Recently, the developments of T-DNA insertion knockout mutant lines and chimeric repressor gene-silencing technology have provided effective tools for exploring the individual functions of Hsfs. This review describes the current knowledge on the individual functions and activation mechanisms of Hsfs.
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Affiliation(s)
- Yukinori Yabuta
- Faculty of Agriculture, School of Agricultural, Biological, and Environmental Sciences, Tottori University, Tottori, Japan
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42
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Sun X, Sun C, Li Z, Hu Q, Han L, Luo H. AsHSP17, a creeping bentgrass small heat shock protein modulates plant photosynthesis and ABA-dependent and independent signalling to attenuate plant response to abiotic stress. PLANT, CELL & ENVIRONMENT 2016; 39:1320-37. [PMID: 26610288 DOI: 10.1111/pce.12683] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 11/16/2015] [Indexed: 05/20/2023]
Abstract
Heat shock proteins (HSPs) are molecular chaperones that accumulate in response to heat and other abiotic stressors. Small HSPs (sHSPs) belong to the most ubiquitous HSP subgroup with molecular weights ranging from 12 to 42 kDa. We have cloned a new sHSP gene, AsHSP17 from creeping bentgrass (Agrostis stolonifera) and studied its role in plant response to environmental stress. AsHSP17 encodes a protein of 17 kDa. Its expression was strongly induced by heat in both leaf and root tissues, and by salt and abscisic acid (ABA) in roots. Transgenic Arabidopsis plants constitutively expressing AsHSP17 exhibited enhanced sensitivity to heat and salt stress accompanied by reduced leaf chlorophyll content and decreased photosynthesis under both normal and stressed conditions compared to wild type. Overexpression of AsHSP17 also led to hypersensitivity to exogenous ABA and salinity during germination and post-germinative growth. Gene expression analysis indicated that AsHSP17 modulates expression of photosynthesis-related genes and regulates ABA biosynthesis, metabolism and ABA signalling as well as ABA-independent stress signalling. Our results suggest that AsHSP17 may function as a protein chaperone to negatively regulate plant responses to adverse environmental stresses through modulating photosynthesis and ABA-dependent and independent signalling pathways.
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Affiliation(s)
- Xinbo Sun
- Turfgrass Research Institute, Beijing Forestry University, Beijing, 100083, China
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
- Key Laboratory of Crop Growth Regulation of Hebei Province, Agricultural University of Hebei, Baoding, 071001, China
| | - Chunyu Sun
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Zhigang Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Qian Hu
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Liebao Han
- Turfgrass Research Institute, Beijing Forestry University, Beijing, 100083, China
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
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Wu YR, Lin YC, Chuang HW. Laminarin modulates the chloroplast antioxidant system to enhance abiotic stress tolerance partially through the regulation of the defensin-like gene expression. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 247:83-92. [PMID: 27095402 DOI: 10.1016/j.plantsci.2016.03.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/24/2016] [Accepted: 03/19/2016] [Indexed: 05/21/2023]
Abstract
Algae wall polysaccharide, laminarin (Lam), has an established role on induction of plant disease resistance. In this study, application of Lam increased Arabidopsis fresh weight and enhanced tolerance to salt and heat stress by stabilizing chloroplast under adverse environment. Transcriptome analysis indicated that, in addition to induced a large number of genes associated with the host defense, genes involved in the regulation of abiotic stress tolerance mostly the heat stress response constituted the largest group of the up-regulated genes. Lam induced expression of IRT1, ZIP8, and copper transporters involved in transport of Fe, Zn, Cu ions associated with the activity of chloroplast antioxidant system. Lam also up-regulated genes involved in the synthesis of terpenoid, a plastidial-derived secondary metabolite with antioxidant activity. Overexpression of a Lam-induced defensin like 202 (DEFL202) resulted in increased chloroplast stability under salt stress and increased plant growth activity after heat stress. Expression of antioxidant enzymes including SOD and ascorbate peroxidase (APX), photosystem PsbA-D1 and ABA-dependent responsive to desiccation 22 (RD22) was induced to higher levels in the transgenic seedlings. In sum, our results suggest that Lam is an potent inducer for induction of chloroplastic antioxidant activity. Lam affect plant abiotic stress tolerance partially through regulation of the DEFL-mediated pathway.
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Affiliation(s)
- Yi-Ru Wu
- Department of Bioagricultural Sciences, National Chiayi University, Chiayi, Taiwan
| | - Yi-Chen Lin
- Department of Bioagricultural Sciences, National Chiayi University, Chiayi, Taiwan
| | - Huey-wen Chuang
- Department of Bioagricultural Sciences, National Chiayi University, Chiayi, Taiwan.
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Nazir M, Pandey R, Siddiqi TO, Ibrahim MM, Qureshi MI, Abraham G, Vengavasi K, Ahmad A. Nitrogen-Deficiency Stress Induces Protein Expression Differentially in Low-N Tolerant and Low-N Sensitive Maize Genotypes. FRONTIERS IN PLANT SCIENCE 2016; 7:298. [PMID: 27047497 PMCID: PMC4800187 DOI: 10.3389/fpls.2016.00298] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 02/25/2016] [Indexed: 05/04/2023]
Abstract
Nitrogen (N) is essential for proper plant growth and its application has proven to be critical for agricultural produce. However, for unavoidable economic and environmental problems associated with excessive use of N-fertilizers, it is an urgent demand to manage application of fertilizers. Improving the N-use efficiency (NUE) of crop plants to sustain productivity even at low N levels is the possible solution. In the present investigation, contrasting low-N sensitive (HM-4) and low-N tolerant (PEHM-2) genotypes were identified and used for comparative proteome-profiling of leaves under optimum and low N as well as restoration of low N on 3rd (NR3) and 5th (NR5) days after re-supplying N. The analysis of differential expression pattern of proteins was performed by 2-D gel electrophoresis. Significant variations in the expression of proteins were observed under low N, which were genotype specific. In the leaf proteome, 25 spots were influenced by N treatment and four spots were different between the two genotypes. Most of the proteins that were differentially accumulated in response to N level and were involved in photosynthesis and metabolism, affirming the relationship between N and carbon metabolism. In addition to this, greater intensity of some defense proteins in the low N tolerant genotype was found that may have a possible role in imparting it tolerance under N starvation conditions. The new insights generated on maize proteome in response to N-starvation and restoration would be useful toward improvement of NUE in maize.
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Affiliation(s)
- Muslima Nazir
- Department of Botany, Faculty of Science, Jamia HamdardNew Delhi, India
| | - Renu Pandey
- Division of Plant Physiology, Indian Council of Agricultural Research-Indian Agricultural Research InstituteNew Delhi, India
| | - Tariq O. Siddiqi
- Department of Botany, Faculty of Science, Jamia HamdardNew Delhi, India
| | - Mohamed M. Ibrahim
- Department of Botany and Microbiology, Science College, King Saud UniversityRiyadh, Saudi Arabia
- Department of Botany and Microbiology, Faculty of Science, Alexandria UniversityAlexandria, Egypt
| | - Mohammad I. Qureshi
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia IslamiaNew Delhi, India
| | - Gerard Abraham
- Centre for Conservation and Utilization of Blue Green Algae, Indian Council of Agricultural Research-Indian Agricultural Research InstituteNew Delhi, India
| | - Krishnapriya Vengavasi
- Division of Plant Physiology, Indian Council of Agricultural Research-Indian Agricultural Research InstituteNew Delhi, India
| | - Altaf Ahmad
- Department of Botany, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India
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Role of Heat Shock Proteins in Improving Heat Stress Tolerance in Crop Plants. HEAT SHOCK PROTEINS AND PLANTS 2016. [DOI: 10.1007/978-3-319-46340-7_14] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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46
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Small Heat Shock Proteins: Roles in Development, Desiccation Tolerance and Seed Longevity. HEAT SHOCK PROTEINS AND PLANTS 2016. [DOI: 10.1007/978-3-319-46340-7_1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Cha JY, Lee SH, Seo KH, Choi YJ, Cheong MS, Son D. N-terminal arm of orchardgrass Hsp17.2 (DgHsp17.2) is essential for both in vitro chaperone activity and in vivo thermotolerance in yeast. Arch Biochem Biophys 2015; 591:18-27. [PMID: 26724757 DOI: 10.1016/j.abb.2015.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 12/14/2015] [Accepted: 12/22/2015] [Indexed: 11/27/2022]
Abstract
Small heat shock proteins are well-known to function as chaperone in the protection of proteins and subcellular structures against stress-induced denaturation in many cell compartments. Irrespective of such general functional assignment, a proof of function in a living organism is missing. Here, we used heat-induced orchardgrass small Hsp17.2 (DgHsp17.2). Its function in in vitro chaperone properties has shown in protecting the model substrate, malate dehydrogenase (MDH) and citrate synthase (CS). Overexpression of DgHsp17.2 triggering strong chaperone activity enhanced in vivo thermotolerance of yeast cells. To identify the functional domain on DgHsp17.2 and correlationship between in vitro chaperone property and in vivo thermotolerance, we generated truncation mutants of DgHsp17.2 and showed essentiality of the N-terminal arm of DgHsp17.2 for the chaperone function. In addition, beyond for acquisition of thermotolerance irrespective of sequences are diverse among the small Hsps. However, any truncation mutants of DgHsp17.2 did not exhibit strong interaction with orchardgrass heat shock protein 70 (DgHsp70) different from mature DgHsp17.2, indicating that full-length DgHsp17.2 is necessary for cooperating with Hsp70 protein. Our study indicates that the N-terminal arm of DgHsp17.2 is an important region for chaperone activity and thermotolerance.
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Affiliation(s)
- Joon-Yung Cha
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea.
| | - Sang-Hoon Lee
- Grassland & Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 330-801, Republic of Korea.
| | - Kyung Hye Seo
- Department of Herbal Crop Research, National Institute of Horticultural & Herbal Science, Eumsung 3369-873, Republic of Korea.
| | - Young Jin Choi
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea.
| | - Mi Sun Cheong
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea.
| | - Daeyoung Son
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea; Department of Plant Medicine, Gyeongsang National University, Jinju 660-701, Republic of Korea.
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48
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Shiraya T, Mori T, Maruyama T, Sasaki M, Takamatsu T, Oikawa K, Itoh K, Kaneko K, Ichikawa H, Mitsui T. Golgi/plastid-type manganese superoxide dismutase involved in heat-stress tolerance during grain filling of rice. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:1251-63. [PMID: 25586098 PMCID: PMC6680209 DOI: 10.1111/pbi.12314] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/19/2014] [Indexed: 05/20/2023]
Abstract
Superoxide dismutase (SOD) is widely assumed to play a role in the detoxification of reactive oxygen species caused by environmental stresses. We found a characteristic expression of manganese SOD 1 (MSD1) in a heat-stress-tolerant cultivar of rice (Oryza sativa). The deduced amino acid sequence contains a signal sequence and an N-glycosylation site. Confocal imaging analysis of rice and onion cells transiently expressing MSD1-YFP showed MSD1-YFP in the Golgi apparatus and plastids, indicating that MSD1 is a unique Golgi/plastid-type SOD. To evaluate the involvement of MSD1 in heat-stress tolerance, we generated transgenic rice plants with either constitutive high expression or suppression of MSD1. The grain quality of rice with constitutive high expression of MSD1 grown at 33/28 °C, 12/12 h, was significantly better than that of the wild type. In contrast, MSD1-knock-down rice was markedly susceptible to heat stress. Quantitative shotgun proteomic analysis indicated that the overexpression of MSD1 up-regulated reactive oxygen scavenging, chaperone and quality control systems in rice grains under heat stress. We propose that the Golgi/plastid MSD1 plays an important role in adaptation to heat stress.
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Affiliation(s)
- Takeshi Shiraya
- Department of Applied Biological Chemistry, Niigata University, Niigata, Japan
| | - Taiki Mori
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Tatsuya Maruyama
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Maiko Sasaki
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Takeshi Takamatsu
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Kazusato Oikawa
- Department of Applied Biological Chemistry, Niigata University, Niigata, Japan
| | - Kimiko Itoh
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Kentaro Kaneko
- Department of Applied Biological Chemistry, Niigata University, Niigata, Japan
| | - Hiroaki Ichikawa
- Division of Plant Sciences, National Institute of Agrobiological Sciences, Tsukuba, Japan
| | - Toshiaki Mitsui
- Department of Applied Biological Chemistry, Niigata University, Niigata, Japan
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
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49
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Singh R, Mishra A, Dhawan SS, Shirke PA, Gupta MM, Sharma A. Physiological performance, secondary metabolite and expression profiling of genes associated with drought tolerance in Withania somnifera. PROTOPLASMA 2015; 252:1439-1450. [PMID: 25691002 DOI: 10.1007/s00709-015-0771-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 01/26/2015] [Indexed: 06/04/2023]
Abstract
Physiological, biochemical, and gene expression responses under drought stress were studied in Withania somnifera. Photosynthesis rate, stomatal conductance, transpiration rate, relative water content, chlorophyll content, and quantum yield of photosystems I and II (PSI and PSII) decreased in response to drought stress. Comparative expression of genes involved in osmoregulation, detoxification, signal transduction, metabolism, and transcription factor was analyzed through quantitative RT-PCR. The genes encoding 1-pyrroline-5-carboxylate synthetase (P5CS), glutathione S-transferase (GST), superoxide dismutase (SOD), serine threonine-protein kinase (STK), serine threonine protein phosphatase (PSP), aldehyde dehydrogenase (AD), leucoanthocyanidin dioxygenase/anthocyanin synthase (LD/AS), HSP, MYB, and WRKY have shown upregulation in response to drought stress condition in leaf tissues. Enhanced detoxification and osmoregulation along with increased withanolides production were also observed under drought stress. The results of this study will be helpful in developing stress-tolerant and high secondary metabolite yielding genotypes.
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Affiliation(s)
- Ruchi Singh
- Plant Physiology Division, CSIR-National Botanical Research Institute, Lucknow, India
| | - Anand Mishra
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Sunita S Dhawan
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Pramod A Shirke
- Plant Physiology Division, CSIR-National Botanical Research Institute, Lucknow, India
| | - Madan M Gupta
- Chemical Sciences Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Ashok Sharma
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India.
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50
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Aneja B, Yadav NR, Kumar N, Yadav RC. Hsp transcript induction is correlated with physiological changes under drought stress in Indian mustard. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2015; 21:305-16. [PMID: 26261395 PMCID: PMC4524871 DOI: 10.1007/s12298-015-0305-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 06/11/2015] [Accepted: 06/15/2015] [Indexed: 05/28/2023]
Abstract
Brassica juncea is an important oilseed crop and drought stress is major abiotic stress that limits its growth and productivity. RH0116 (drought tolerant) and RH8812 (drought sensitive) genotypes were undertaken to study some of the physiological parameters and hsp gene expression related to stress tolerance under drought stress conditions. Differential response in terms of seed germination, electrolyte leakage, RWC, osmotic potential was observed in the selected genotypes. In vitro seed germination studies using PEG stress treatments indicated reduced seed germination with increasing levels of stress treatment. Electrolyte leakage increased, whereas, relative water content and osmotic potential decreased in stressed seedlings. Expression of hsp gene was found to be upregulated during drought stress as the transcripts were present only in the stressed plants and disappeared upon rehydration. The drought tolerant variety showed higher transcript accumulation as compared to the sensitive variety. The study showed that drought induced changes in gene expression in two contrasting genotypes were consistent with the physiological response.
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Affiliation(s)
- Bharti Aneja
- />Department of Molecular Biology, Biotechnology and Bioinformatics, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004 India
| | - Neelam R. Yadav
- />Department of Molecular Biology, Biotechnology and Bioinformatics, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004 India
| | - Neeraj Kumar
- />Department of Botany and Plant Physiology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004 India
| | - Ram C. Yadav
- />Department of Molecular Biology, Biotechnology and Bioinformatics, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004 India
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