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Yang N, Ren J, Dai S, Wang K, Leung M, Lu Y, An Y, Burlingame A, Xu S, Wang Z, Yu W, Li N. The Quantitative Biotinylproteomics Studies Reveal a WInd-Related Kinase 1 (Raf-Like Kinase 36) Functioning as an Early Signaling Component in Wind-Induced Thigmomorphogenesis and Gravitropism. Mol Cell Proteomics 2024; 23:100738. [PMID: 38364992 PMCID: PMC10951710 DOI: 10.1016/j.mcpro.2024.100738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024] Open
Abstract
Wind is one of the most prevalent environmental forces entraining plants to develop various mechano-responses, collectively called thigmomorphogenesis. Largely unknown is how plants transduce these versatile wind force signals downstream to nuclear events and to the development of thigmomorphogenic phenotype or anemotropic response. To identify molecular components at the early steps of the wind force signaling, two mechanical signaling-related phosphoproteins, identified from our previous phosphoproteomic study of Arabidopsis touch response, mitogen-activated protein kinase kinase 1 (MKK1) and 2 (MKK2), were selected for performing in planta TurboID (ID)-based quantitative proximity-labeling (PL) proteomics. This quantitative biotinylproteomics was separately performed on MKK1-ID and MKK2-ID transgenic plants, respectively, using the genetically engineered TurboID biotin ligase expression transgenics as a universal control. This unique PTM proteomics successfully identified 11 and 71 MKK1 and MKK2 putative interactors, respectively. Biotin occupancy ratio (BOR) was found to be an alternative parameter to measure the extent of proximity and specificity between the proximal target proteins and the bait fusion protein. Bioinformatics analysis of these biotinylprotein data also found that TurboID biotin ligase favorably labels the loop region of target proteins. A WInd-Related Kinase 1 (WIRK1), previously known as rapidly accelerated fibrosarcoma (Raf)-like kinase 36 (RAF36), was found to be a putative common interactor for both MKK1 and MKK2 and preferentially interacts with MKK2. Further molecular biology studies of the Arabidopsis RAF36 kinase found that it plays a role in wind regulation of the touch-responsive TCH3 and CML38 gene expression and the phosphorylation of a touch-regulated PATL3 phosphoprotein. Measurement of leaf morphology and shoot gravitropic response of wirk1 (raf36) mutant revealed that the WIRK1 gene is involved in both wind-triggered rosette thigmomorphogenesis and gravitropism of Arabidopsis stems, suggesting that the WIRK1 (RAF36) protein probably functioning upstream of both MKK1 and MKK2 and that it may serve as the crosstalk point among multiple mechano-signal transduction pathways mediating both wind mechano-response and gravitropism.
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Affiliation(s)
- Nan Yang
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Jia Ren
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Shuaijian Dai
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Kai Wang
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Manhin Leung
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Yinglin Lu
- Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou, Guangdong, China
| | - Yuxing An
- Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou, Guangdong, China
| | - Al Burlingame
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA
| | - Shouling Xu
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California, USA
| | - Zhiyong Wang
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California, USA
| | - Weichuan Yu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China.
| | - Ning Li
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China; Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, Guangdong, China.
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Liu C, Dong K, Du H, Wang X, Sun J, Hu Q, Luo H, Sun X. AsHSP26.2, a creeping bentgrass chloroplast small heat shock protein positively regulates plant development. PLANT CELL REPORTS 2024; 43:32. [PMID: 38195772 DOI: 10.1007/s00299-023-03109-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 11/10/2023] [Indexed: 01/11/2024]
Abstract
KEY MESSAGE The creeping bentgrass small heat shock protein AsHSP26.2 positively regulates plant growth and is a novel candidate for use in crop genetic engineering for enhanced biomass production and grain yield. Small heat shock proteins (sHSPs), a family of proteins with high level of diversity, significantly influence plant stress tolerance and plant development. We have cloned a creeping bentgrass chloroplast-localized sHSP gene, AsHSP26.2 responsive to IAA, GA and 6-BA stimulation. Transgenic creeping bentgrass overexpressing AsHSP26.2 exhibited significantly enhanced plant growth with increased stolon number and length as well as enlarged leaf blade width and leaf sheath diameters, but inhibited leaf trichomes initiation and development in the abaxial epidermis. These phenotypes are completely opposite to those displayed in the transgenic plants overexpressing AsHSP26.8, another chloroplast sHSP26 isoform that contains additional seven amino acids (AEGQGDG) between the consensus regions III and IV (Sun et al., Plant Cell Environ 44:1769-1787, 2021). Furthermore, AsHSP26.2 overexpression altered phytohormone biosynthesis and signaling transduction, resulting in elevated auxin and gibberellins (GA) accumulation. The results obtained provide novel insights implicating the sHSPs in plant growth and development regulation, and strongly suggest AsHSP26.2 to be a novel candidate for use in crop genetic engineering for enhanced plant biomass production and grain yield.
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Affiliation(s)
- Chang Liu
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Kangting Dong
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Hui Du
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xiaodong Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, China
| | - Jianmiao Sun
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Qian Hu
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA.
| | - Xinbo Sun
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China.
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China.
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China.
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Vassileva V, Georgieva M, Todorov D, Mishev K. Small Sized Yet Powerful: Nuclear Distribution C Proteins in Plants. PLANTS (BASEL, SWITZERLAND) 2023; 13:119. [PMID: 38202427 PMCID: PMC10780334 DOI: 10.3390/plants13010119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/12/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024]
Abstract
The family of Nuclear Distribution C (NudC) proteins plays a pivotal and evolutionarily conserved role in all eukaryotes. In animal systems, these proteins influence vital cellular processes like cell division, protein folding, nuclear migration and positioning, intracellular transport, and stress response. This review synthesizes past and current research on NudC family members, focusing on their growing importance in plants and intricate contributions to plant growth, development, and stress tolerance. Leveraging information from available genomic databases, we conducted a thorough characterization of NudC family members, utilizing phylogenetic analysis and assessing gene structure, motif organization, and conserved protein domains. Our spotlight on two Arabidopsis NudC genes, BOB1 and NMig1, underscores their indispensable roles in embryogenesis and postembryonic development, stress responses, and tolerance mechanisms. Emphasizing the chaperone activity of plant NudC family members, crucial for mitigating stress effects and enhancing plant resilience, we highlight their potential as valuable targets for enhancing crop performance. Moreover, the structural and functional conservation of NudC proteins across species suggests their potential applications in medical research, particularly in functions related to cell division, microtubule regulation, and associated pathways. Finally, we outline future research avenues centering on the exploration of under investigated functions of NudC proteins in plants.
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Affiliation(s)
- Valya Vassileva
- Department of Molecular Biology and Genetics, Laboratory of Regulation of Gene Expression, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.G.); (D.T.)
| | | | | | - Kiril Mishev
- Department of Molecular Biology and Genetics, Laboratory of Regulation of Gene Expression, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.G.); (D.T.)
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Jedličková V, Hejret V, Demko M, Jedlička P, Štefková M, Robert HS. Transcriptome analysis of thermomorphogenesis in ovules and during early seed development in Brassica napus. BMC Genomics 2023; 24:236. [PMID: 37142980 PMCID: PMC10158150 DOI: 10.1186/s12864-023-09316-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 04/16/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND Plant sexual reproduction is highly sensitive to elevated ambient temperatures, impacting seed development and production. We previously phenotyped this effect on three rapeseed cultivars (DH12075, Topas DH4079, and Westar). This work describes the transcriptional response associated with the phenotypic changes induced by heat stress during early seed development in Brassica napus. RESULTS We compared the differential transcriptional response in unfertilized ovules and seeds bearing embryos at 8-cell and globular developmental stages of the three cultivars exposed to high temperatures. We identified that all tissues and cultivars shared a common transcriptional response with the upregulation of genes linked to heat stress, protein folding and binding to heat shock proteins, and the downregulation of cell metabolism. The comparative analysis identified an enrichment for a response to reactive oxygen species (ROS) in the heat-tolerant cultivar Topas, correlating with the phenotypic changes. The highest heat-induced transcriptional response in Topas seeds was detected for genes encoding various peroxidases, temperature-induced lipocalin (TIL1), or protein SAG21/LEA5. On the contrary, the transcriptional response in the two heat-sensitive cultivars, DH12075 and Westar, was characterized by heat-induced cellular damages with the upregulation of genes involved in the photosynthesis and plant hormone signaling pathways. Particularly, the TIFY/JAZ genes involved in jasmonate signaling were induced by stress, specifically in ovules of heat-sensitive cultivars. Using a weighted gene co-expression network analysis (WGCNA), we identified key modules and hub genes involved in the heat stress response in studied tissues of either heat-tolerant or sensitive cultivars. CONCLUSIONS Our transcriptional analysis complements a previous phenotyping analysis by characterizing the growth response to elevated temperatures during early seed development and reveals the molecular mechanisms underlying the phenotypic response. The results demonstrated that response to ROS, seed photosynthesis, and hormonal regulation might be the critical factors for stress tolerance in oilseed rape.
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Affiliation(s)
- Veronika Jedličková
- Hormonal Crosstalk in Plant Development, Mendel Center for Plant Genomics and Proteomics, CEITEC MU-Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Václav Hejret
- Bioinformatics Core Facility, CEITEC MU-Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Martin Demko
- Bioinformatics Core Facility, CEITEC MU-Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Pavel Jedlička
- Department of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Marie Štefková
- Hormonal Crosstalk in Plant Development, Mendel Center for Plant Genomics and Proteomics, CEITEC MU-Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Hélène S Robert
- Hormonal Crosstalk in Plant Development, Mendel Center for Plant Genomics and Proteomics, CEITEC MU-Central European Institute of Technology, Masaryk University, Brno, Czech Republic.
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Song R, Yan B, Xie J, Zhou L, Xu R, Zhou JM, Ji XH, Yi ZL. Comparative proteome profiles of Polygonatum cyrtonema Hua rhizomes (Rhizoma Ploygonati) in response to different levels of cadmium stress. BMC PLANT BIOLOGY 2023; 23:149. [PMID: 36935490 PMCID: PMC10026435 DOI: 10.1186/s12870-023-04162-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The Polygonatum cyrtonema Hua rhizomes (also known as Rhizoma Polygonati, RP) are consumed for their health benefits. The main source of the RP is wild P. cyrtonema populations in the Hunan province of China. However, the soil Cadmium (Cd) content in Huanan is increasing, thus increasing the risks of Cd accumulation in RP which may end up in the human food chain. To understand the mechanism of Cd accumulation and resistance in P. cyrtonema, we subjected P. cyrtonema plants to four levels of Cd stress [(D2) 1, (D3) 2, (D4) 4, and (D5) 8 mg/kg)] compared to (D1) 0.5 mg/kg. RESULTS The increase in soil Cd content up to 4 mg/kg resulted in a significant increase in tissue (root hair, rhizome, stem, and leaf) Cd content. The increase in Cd concentration variably affected the antioxidant enzyme activities. We could identify 14,171 and 12,115 protein groups and peptides, respectively. There were 193, 227, 260, and 163 differentially expressed proteins (DEPs) in D2, D3, D4, and D5, respectively, compared to D1. The number of downregulated DEPs increased with an increase in Cd content up to 4 mg/kg. These downregulated proteins belonged to sugar biosynthesis, amino acid biosynthesis-related pathways, and secondary metabolism-related pathways. Our results indicate that Cd stress increases ROS generation, against which, different ROS scavenging proteins are upregulated in P. cyrtonema. Moreover, Cd stress affected the expression of lipid transport and assembly, glycolysis/gluconeogenesis, sugar biosynthesis, and ATP generation. CONCLUSION These results suggest that an increase in soil Cd content may end up in Huangjing. Cadmium stress initiates expression changes in multiple pathways related to energy metabolism, sugar biosynthesis, and secondary metabolite biosynthesis. The proteins involved in these pathways are potential candidates for manipulation and development of Cd stress-tolerant genotypes.
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Affiliation(s)
- Rong Song
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, China
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Bei Yan
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Jin Xie
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Li Zhou
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Rui Xu
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Jia Min Zhou
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Xiong Hui Ji
- Institute of Agricultural Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan, China
| | - Zi Li Yi
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, China.
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6
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Tak Y, Lal SS, Gopan S, Balakrishnan M, Satheesh G, Biswal AK, Verma AK, Cole SJ, Brown RE, Hayward RE, Hines JK, Sahi C. Identification of subfunctionalized aggregate-remodeling J-domain proteins in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:1705-1722. [PMID: 36576197 PMCID: PMC10010614 DOI: 10.1093/jxb/erac514] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
J-domain proteins (JDPs) are critical components of the cellular protein quality control machinery, playing crucial roles in preventing the formation and, solubilization of cytotoxic protein aggregates. Bacteria, yeast, and plants additionally have large, multimeric heat shock protein 100 (Hsp100)-class disaggregases that resolubilize protein aggregates. JDPs interact with aggregated proteins and specify the aggregate-remodeling activities of Hsp70s and Hsp100s. However, the aggregate-remodeling properties of plant JDPs are not well understood. Here we identify eight orthologs of Sis1 (an evolutionarily conserved Class II JDP of budding yeast) in Arabidopsis thaliana with distinct aggregate-remodeling functionalities. Six of these JDPs associate with heat-induced protein aggregates in vivo and co-localize with Hsp101 at heat-induced protein aggregate centers. Consistent with a role in solubilizing cytotoxic protein aggregates, an atDjB3 mutant had defects in both solubilizing heat-induced aggregates and acquired thermotolerance as compared with wild-type seedlings. Next, we used yeast prions as protein aggregate models to show that the six JDPs have distinct aggregate-remodeling properties. Results presented in this study, as well as findings from phylogenetic analysis, demonstrate that plants harbor multiple, evolutionarily conserved JDPs with capacity to process a variety of protein aggregate conformers induced by heat and other stressors.
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Affiliation(s)
- Yogesh Tak
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Silviya S Lal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Shilpa Gopan
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Madhumitha Balakrishnan
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Gouri Satheesh
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Anup K Biswal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Amit K Verma
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Sierra J Cole
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | | | | | - Justin K Hines
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - Chandan Sahi
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
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Kast EJ, Kaplinsky N. HSFA1d regulates the kinetics of heat-induced HSP17.6 expression in Arabidopsis. MICROPUBLICATION BIOLOGY 2022; 2022:10.17912/micropub.biology.000555. [PMID: 35622526 PMCID: PMC9012957 DOI: 10.17912/micropub.biology.000555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 01/01/1970] [Accepted: 04/14/2022] [Indexed: 11/09/2022]
Abstract
Arabidopsis contains four HSFA1 heat shock transcription factors ( HSFA1a , HSFA1b , HSFA1d , and HSFA1e ) that regulate the primary response to high temperature stress responses. These genes have overlapping functions and, while double and triple HSFA1 mutants have thermotolerance phenotypes, these genes have no reported single mutant thermotolerance phenotypes. We used an automated fluorescence microscopy system to quantitate the expression of a HSP17. 6:GFP reporter with high temporal resolution to show that HSFA1d is required for normal heat-induced HSP17.6 expression. HSP17.6 expression is reduced and delayed in hsfa1d-1 mutants. This finding highlights the power of using gene expression kinetics as a quantitative phenotype for discovering the function of genes that exhibit functional redundancy.
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Affiliation(s)
| | - Nick Kaplinsky
- Department of Biology, Swarthmore College
,
Correspondence to: Nick Kaplinsky (
)
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8
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Poidevin L, Forment J, Unal D, Ferrando A. Transcriptome and translatome changes in germinated pollen under heat stress uncover roles of transporter genes involved in pollen tube growth. PLANT, CELL & ENVIRONMENT 2021. [PMID: 33289138 DOI: 10.1101/2020.05.29.122937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Plant reproduction is one key biological process that is very sensitive to heat stress and, as a result, enhanced global warming becomes a serious threat to agriculture. In this work, we have studied the effects of heat on germinated pollen of Arabidopsis thaliana both at the transcriptional and translational level. We have used a high-resolution ribosome profiling technology to provide a comprehensive study of the transcriptome and the translatome of germinated pollen at permissive and restrictive temperatures. We have found significant down-regulation of key membrane transporters required for pollen tube growth by heat, thus uncovering heat-sensitive targets. A subset of the heat-repressed transporters showed coordinated up-regulation with canonical heat-shock genes at permissive conditions. We also found specific regulations at the translational level and we have uncovered the presence of ribosomes on sequences annotated as non-coding. Our results demonstrate that heat impacts mostly on membrane transporters thus explaining the deleterious effects of heat stress on pollen growth. The specific regulations at the translational level and the presence of ribosomes on non-coding RNAs highlights novel regulatory aspects on plant fertilization.
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Affiliation(s)
- Laetitia Poidevin
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
| | - Javier Forment
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
| | - Dilek Unal
- Biotechnology Application and Research Center, and Department of Molecular Biology, Faculty of Science and Letter, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Alejandro Ferrando
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
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Ooi SE, Feshah I, Nuraziyan A, Sarpan N, Ata N, Lim CC, Choo CN, Wong WC, Wong FH, Wong CK, Ong-Abdullah M. Leaf transcriptomic signatures for somatic embryogenesis potential of Elaeis guineensis. PLANT CELL REPORTS 2021; 40:1141-1154. [PMID: 33929599 DOI: 10.1007/s00299-021-02698-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
Potentially embryogenic oil palms can be identified through leaf transcriptomic signatures. Differential expression of genes involved in flowering time, and stress and light responses may associate with somatic embryogenesis potential. Clonal propagation is an attractive approach for the mass propagation of high yielding oil palms. A major issue hampering the effectiveness of oil palm tissue culture is the low somatic embryogenesis rate. Previous studies have identified numerous genes involved in oil palm somatic embryogenesis, but their association with embryogenic potential has not been determined. In this study, differential expression analysis of leaf transcriptomes from embryogenic and non-embryogenic mother palms revealed that transcriptome profiles from non- and poor embryogenic mother palms were more similar than highly embryogenic palms. A total of 171 genes exhibiting differential expression in non- and low embryogenesis groups could also discriminate high from poor embryogenesis groups of another tissue culture agency. Genes related to flowering time or transition such as FTIP, FRIGIDA-LIKE, and NF-YA were up-regulated in embryogenic ortets, suggesting that reproduction timing of the plant may associate with somatic embryogenesis potential. Several light response or photosynthesis-related genes were down-regulated in embryogenic ortets, suggesting a link between photosynthesis activity and embryogenic potential. As expression profiles of the differentially expressed genes are very similar between non- and low embryogenic groups, machine learning approaches with several candidate genes may generate a more sensitive model to better discriminate non-embryogenic from embryogenic ortets.
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Affiliation(s)
- Siew-Eng Ooi
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia.
| | - Ishak Feshah
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia
| | - Azimi Nuraziyan
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia
| | - Norashikin Sarpan
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia
| | - Nabeel Ata
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia
| | - Chin-Ching Lim
- United Plantations Bhd., Jenderata Estate, 36009, Teluk Intan, Perak, Malaysia
| | - Chin-Nee Choo
- Advanced Agriecological Research Sdn. Bhd., 11 Jalan Teknologi 3/6, Taman Sains Selangor 1, Kota Damansara, 47810, Petaling Jaya, Selangor, Malaysia
| | - Wei-Chee Wong
- Advanced Agriecological Research Sdn. Bhd., 11 Jalan Teknologi 3/6, Taman Sains Selangor 1, Kota Damansara, 47810, Petaling Jaya, Selangor, Malaysia
| | - Foo-Hin Wong
- United Plantations Bhd., Jenderata Estate, 36009, Teluk Intan, Perak, Malaysia
| | - Choo-Kien Wong
- Advanced Agriecological Research Sdn. Bhd., 11 Jalan Teknologi 3/6, Taman Sains Selangor 1, Kota Damansara, 47810, Petaling Jaya, Selangor, Malaysia
| | - Meilina Ong-Abdullah
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, 6 Persiaran Institusi, 43000, Kajang, Selangor, Malaysia
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Fang X, Chai W, Li S, Zhang L, Yu H, Shen J, Xiao W, Liu A, Zhou B, Zhang X. HSP17.4 mediates salicylic acid and jasmonic acid pathways in the regulation of resistance to Colletotrichum gloeosporioides in strawberry. MOLECULAR PLANT PATHOLOGY 2021; 22:817-828. [PMID: 33951267 PMCID: PMC8232031 DOI: 10.1111/mpp.13065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/19/2021] [Accepted: 03/19/2021] [Indexed: 05/04/2023]
Abstract
In this study, we used virus-mediated gene silencing technology and found that the HSP17.4 gene-silenced cultivar Sweet Charlie plants were more susceptible to Colletotrichum gloeosporioides than the wild-type Sweet Charlie, and the level of infection was even higher than that of the susceptible cultivar Benihopp. The results of differential quantitative proteomics showed that after infection with the pathogen, the expression of the downstream response genes NPR1, TGA, and PR-1 of the salicylic acid (SA) signalling pathway was fully up-regulated in the wild-type Sweet Charlie, and the expression of the core transcription factor MYC2 of the jasmonic acid (JA) pathway was significantly down-regulated. The expression of the proteins encoded by these genes did not change significantly in the HSP17.4-silenced Sweet Charlie, indicating that the expression of HSP17.4 activated the up-regulation of downstream signals of SA and inhibited the JA signal pathway. The experiments that used SA, methyl jasmonate, and their inhibitors to treat plants provide additional evidence that the antagonism between SA and JA regulates the resistance of strawberry plants to C. gloeosporioides.
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Affiliation(s)
- Xianping Fang
- Institute of Forestry and PomologyShanghai Academy of Agricultural SciencesShanghaiChina
| | - Weiguo Chai
- Institute of BiotechnologyHangzhou Academy of Agricultural SciencesHangzhouChina
| | - Shuigen Li
- Institute of Forestry and PomologyShanghai Academy of Agricultural SciencesShanghaiChina
| | - Liqing Zhang
- Institute of Forestry and PomologyShanghai Academy of Agricultural SciencesShanghaiChina
| | - Hong Yu
- Institute of BiotechnologyHangzhou Academy of Agricultural SciencesHangzhouChina
| | | | - Wenfei Xiao
- Institute of BiotechnologyHangzhou Academy of Agricultural SciencesHangzhouChina
| | - Aichun Liu
- Institute of BiotechnologyHangzhou Academy of Agricultural SciencesHangzhouChina
| | - Boqiang Zhou
- Institute of Forestry and PomologyShanghai Academy of Agricultural SciencesShanghaiChina
| | - Xueying Zhang
- Institute of Forestry and PomologyShanghai Academy of Agricultural SciencesShanghaiChina
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11
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Poidevin L, Forment J, Unal D, Ferrando A. Transcriptome and translatome changes in germinated pollen under heat stress uncover roles of transporter genes involved in pollen tube growth. PLANT, CELL & ENVIRONMENT 2021; 44:2167-2184. [PMID: 33289138 DOI: 10.1111/pce.13972] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 05/12/2023]
Abstract
Plant reproduction is one key biological process that is very sensitive to heat stress and, as a result, enhanced global warming becomes a serious threat to agriculture. In this work, we have studied the effects of heat on germinated pollen of Arabidopsis thaliana both at the transcriptional and translational level. We have used a high-resolution ribosome profiling technology to provide a comprehensive study of the transcriptome and the translatome of germinated pollen at permissive and restrictive temperatures. We have found significant down-regulation of key membrane transporters required for pollen tube growth by heat, thus uncovering heat-sensitive targets. A subset of the heat-repressed transporters showed coordinated up-regulation with canonical heat-shock genes at permissive conditions. We also found specific regulations at the translational level and we have uncovered the presence of ribosomes on sequences annotated as non-coding. Our results demonstrate that heat impacts mostly on membrane transporters thus explaining the deleterious effects of heat stress on pollen growth. The specific regulations at the translational level and the presence of ribosomes on non-coding RNAs highlights novel regulatory aspects on plant fertilization.
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Affiliation(s)
- Laetitia Poidevin
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
| | - Javier Forment
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
| | - Dilek Unal
- Biotechnology Application and Research Center, and Department of Molecular Biology, Faculty of Science and Letter, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Alejandro Ferrando
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València, Valencia, Spain
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12
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Jagadish SVK, Way DA, Sharkey TD. Plant heat stress: Concepts directing future research. PLANT, CELL & ENVIRONMENT 2021; 44:1992-2005. [PMID: 33745205 DOI: 10.1111/pce.14050] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/10/2021] [Indexed: 05/27/2023]
Abstract
Predicted increases in future global temperatures require us to better understand the dimensions of heat stress experienced by plants. Here we highlight four key areas for improving our approach towards understanding plant heat stress responses. First, although the term 'heat stress' is broadly used, that term encompasses heat shock, heat wave and warming experiments, which vary in the duration and magnitude of temperature increase imposed. A greater integration of results and tools across these approaches is needed to better understand how heat stress associated with global warming will affect plants. Secondly, there is a growing need to associate plant responses to tissue temperatures. We review how plant energy budgets determine tissue temperature and discuss the implications of using leaf versus air temperature for heat stress studies. Third, we need to better understand how heat stress affects reproduction, particularly understudied stages such as floral meristem initiation and development. Fourth, we emphasise the need to integrate heat stress recovery into breeding programs to complement recent progress in improving plant heat stress tolerance. Taken together, we provide insights into key research gaps in plant heat stress and provide suggestions on addressing these gaps to enhance heat stress resilience in plants.
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Affiliation(s)
| | - Danielle A Way
- Department of Biology, University of Western Ontario, London, Ontario, Canada
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
- Terrestrial Ecosystem Science & Technology Group, Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
| | - Thomas D Sharkey
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
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13
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Wang TY, Wu JR, Duong NKT, Lu CA, Yeh CH, Wu SJ. HSP70-4 and farnesylated AtJ3 constitute a specific HSP70/HSP40-based chaperone machinery essential for prolonged heat stress tolerance in Arabidopsis. JOURNAL OF PLANT PHYSIOLOGY 2021; 261:153430. [PMID: 33991823 DOI: 10.1016/j.jplph.2021.153430] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/17/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
AtJ3 (J3)-a member of the Arabidopsis cytosolic HSP40 family-harbors a C-terminal CaaX motif for farnesylation, which is exclusively catalyzed by protein farnesyltransferase (PFT). Previously, prolonged incubation at 37 °C for 4 d was found to be lethal to the heat-intolerant 5 (hit5) mutant lacking PFT and transgenic j3 plants expressing a CaaX-abolishing J3C417S construct, indicating that farnesylated J3 is essential for heat tolerance in plants. Given the role of HSP40s as cochaperones of HSP70s, the thermal sensitivity of five individual cytosolic HSP70 (HSP70-1 to HSP70-5) knockout mutants was tested in this study. Only hsp70-4 was sensitive to the prolonged heat treatment like hit5 and j3. The bimolecular fluorescence complementation (BiFC) assay revealed that HSP70-4 interacted with J3 and J3C417Sin vivo at normal (23 °C) and high (37 °C) temperatures. At 23 °C, both HSP70-4-J3 and HSP70-4-J3C417S BiFC signals were uniformly distributed across the cell. However, following treatment at 37 °C, HSP70-4-J3, but not HSP70-4-J3C417S, BiFC signals were detected as discernable foci. These heat-induced HSP70-4-J3 BiFC foci were localized in heat stress granules (HSGs). In addition, hsp70-4 and J3C417S accumulated more insoluble proteins than the wild type. Thus, farnesylated J3 dictates the chaperone function of HSP70-4 in HSGs. Collectively, this study identified the first HSP70/HSP40-type chaperone machinery playing a crucial role in protecting plants against prolonged heat stress, and demonstrated the significance of protein farnesylation in its protective function.
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Affiliation(s)
- Tzu-Yun Wang
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
| | - Jia-Rong Wu
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
| | - Ngoc Kieu Thi Duong
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
| | - Chung-An Lu
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
| | - Ching-Hui Yeh
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
| | - Shaw-Jye Wu
- Department of Life Sciences, National Central University, 300 Jhong-Da Road, Jhong-Li District, Taoyuan City 32001, Taiwan.
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14
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Zheng Z, Li Y, Li M, Li G, Du X, Hongyin H, Yin M, Lu Z, Zhang X, Shrestha N, Liu J, Yang Y. Whole-Genome Diversification Analysis of the Hornbeam Species Reveals Speciation and Adaptation Among Closely Related Species. FRONTIERS IN PLANT SCIENCE 2021; 12:581704. [PMID: 33643339 PMCID: PMC7902934 DOI: 10.3389/fpls.2021.581704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Speciation is the key evolutionary process for generating biological diversity and has a central place in evolutionary and ecological research. How species diverge and adapt to different habitats is one of the most exciting areas in speciation studies. Here, we sequenced 55 individuals from three closely related species in the genus Carpinus: Carpinus tibetana, Carpinus monbeigiana, and Carpinus mollicoma to understand the strength and direction of gene flow and selection during the speciation process. We found low genetic diversity in C. tibetana, which reflects its extremely small effective population size. The speciation analysis between C. monbeigiana and C. mollicoma revealed that both species diverged ∼1.2 Mya with bidirectional gene flow. A total of 291 highly diverged genes, 223 copy number variants genes, and 269 positive selected genes were recovered from the two species. Genes associated with the diverged and positively selected regions were mainly involved in thermoregulation, plant development, and response to stress, which included adaptations to their habitats. We also found a great population decline and a low genetic divergence of C. tibetana, which suggests that this species is extremely vulnerable. We believe that the current diversification and adaption study and the important genomic resource sequenced herein will facilitate the speciation studies and serve as an important methodological reference for future research.
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Affiliation(s)
- Zeyu Zheng
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Ying Li
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Minjie Li
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Guiting Li
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xin Du
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Hu Hongyin
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Mou Yin
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhiqiang Lu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China
| | - Xu Zhang
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Nawal Shrestha
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Jianquan Liu
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yongzhi Yang
- State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology and School of Life Sciences, Lanzhou University, Lanzhou, China
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15
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Castander-Olarieta A, Pereira C, Montalbán IA, Mendes VM, Correia S, Suárez-Álvarez S, Manadas B, Canhoto J, Moncaleán P. Proteome-Wide Analysis of Heat-Stress in Pinus radiata Somatic Embryos Reveals a Combined Response of Sugar Metabolism and Translational Regulation Mechanisms. FRONTIERS IN PLANT SCIENCE 2021; 12:631239. [PMID: 33912202 PMCID: PMC8072280 DOI: 10.3389/fpls.2021.631239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/22/2021] [Indexed: 05/06/2023]
Abstract
Somatic embryogenesis is the process by which bipolar structures with no vascular connection with the surrounding tissue are formed from a single or a group of vegetative cells, and in conifers it can be divided into five different steps: initiation, proliferation, maturation, germination and acclimatization. Somatic embryogenesis has long been used as a model to study the mechanisms regulating stress response in plants, and recent research carried out in our laboratory has demonstrated that high temperatures during initial stages of conifer somatic embryogenesis modify subsequent phases of the process, as well as the behavior of the resulting plants ex vitro. The development of high-throughput techniques has facilitated the study of the molecular response of plants to numerous stress factors. Proteomics offers a reliable image of the cell status and is known to be extremely susceptible to environmental changes. In this study, the proteome of radiata pine somatic embryos was analyzed by LC-MS after the application of high temperatures during initiation of embryonal masses [(23°C, control; 40°C (4 h); 60°C (5 min)]. At the same time, the content of specific soluble sugars and sugar alcohols was analyzed by HPLC. Results confirmed a significant decrease in the initiation rate of embryonal masses under 40°C treatments (from 44 to 30.5%) and an increasing tendency in the production of somatic embryos (from 121.87 to 170.83 somatic embryos per gram of embryogenic tissue). Besides, heat provoked a long-term readjustment of the protein synthesis machinery: a great number of structural constituents of ribosomes were increased under high temperatures, together with the down-regulation of the enzyme methionine-tRNA ligase. Heat led to higher contents of heat shock proteins and chaperones, transmembrane transport proteins, proteins related with post-transcriptional regulation (ARGONAUTE 1D) and enzymes involved in the synthesis of fatty acids, specific compatible sugars (myo-inositol) and cell-wall carbohydrates. On the other hand, the protein adenosylhomocysteinase and enzymes linked with the glycolytic pathway, nitrogen assimilation and oxidative stress response were found at lower levels.
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Affiliation(s)
| | - Cátia Pereira
- Department of Forestry Science, NEIKER, Arkaute, Spain
- Center for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | | | - Vera M. Mendes
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Sandra Correia
- Center for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | | | - Bruno Manadas
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Jorge Canhoto
- Center for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Paloma Moncaleán
- Department of Forestry Science, NEIKER, Arkaute, Spain
- *Correspondence: Paloma Moncaleán,
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16
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Thirumalaikumar VP, Gorka M, Schulz K, Masclaux-Daubresse C, Sampathkumar A, Skirycz A, Vierstra RD, Balazadeh S. Selective autophagy regulates heat stress memory in Arabidopsis by NBR1-mediated targeting of HSP90 and ROF1. Autophagy 2020; 17:2184-2199. [PMID: 32967551 PMCID: PMC8496721 DOI: 10.1080/15548627.2020.1820778] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In nature, plants are constantly exposed to many transient, but recurring, stresses. Thus, to complete their life cycles, plants require a dynamic balance between capacities to recover following cessation of stress and maintenance of stress memory. Recently, we uncovered a new functional role for macroautophagy/autophagy in regulating recovery from heat stress (HS) and resetting cellular memory of HS in Arabidopsis thaliana. Here, we demonstrated that NBR1 (next to BRCA1 gene 1) plays a crucial role as a receptor for selective autophagy during recovery from HS. Immunoblot analysis and confocal microscopy revealed that levels of the NBR1 protein, NBR1-labeled puncta, and NBR1 activity are all higher during the HS recovery phase than before. Co-immunoprecipitation analysis of proteins interacting with NBR1 and comparative proteomic analysis of an nbr1-null mutant and wild-type plants identified 58 proteins as potential novel targets of NBR1. Cellular, biochemical and functional genetic studies confirmed that NBR1 interacts with HSP90.1 (heat shock protein 90.1) and ROF1 (rotamase FKBP 1), a member of the FKBP family, and mediates their degradation by autophagy, which represses the response to HS by attenuating the expression of HSP genes regulated by the HSFA2 transcription factor. Accordingly, loss-of-function mutation of NBR1 resulted in a stronger HS memory phenotype. Together, our results provide new insights into the mechanistic principles by which autophagy regulates plant response to recurrent HS.Abbreviations: AIM: Atg8-interacting motif; ATG: autophagy-related; BiFC: bimolecular fluorescence complementation; ConA: concanamycinA; CoIP: co-immunoprecipitation; DMSO: dimethyl sulfoxide; FKBP: FK506-binding protein; FBPASE: fructose 1,6-bisphosphatase; GFP: green fluorescent protein; HS: heat stress; HSF: heat shock factor; HSFA2: heat shock factor A2; HSP: heat shock protein; HSP90: heat shock protein 90; LC-MS/MS: Liquid chromatography-tandem mass spectrometry; 3-MA: 3-methyladenine; NBR1: next-to-BRCA1; PQC: protein quality control; RFP: red fluorescent protein; ROF1: rotamase FKBP1; TF: transcription factor; TUB: tubulin; UBA: ubiquitin-associated; YFP: yellow fluorescent protein.
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Affiliation(s)
- Venkatesh P Thirumalaikumar
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Potsdam-Golm, Germany.,Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Michal Gorka
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Karina Schulz
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Celine Masclaux-Daubresse
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France
| | - Arun Sampathkumar
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Aleksandra Skirycz
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Richard D Vierstra
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Salma Balazadeh
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany.,Institute of Biology, Leiden University, Leiden, The Netherlands
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17
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Lawrence R, Kaplinsky N. Arabidopsis Heat Shock Granules exhibit dynamic cellular behavior and can form in response to protein misfolding in the absence of elevated temperatures. MICROPUBLICATION BIOLOGY 2020; 2020:10.17912/micropub.biology.000285. [PMID: 32760882 PMCID: PMC7396158 DOI: 10.17912/micropub.biology.000285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Nick Kaplinsky
- Swarthmore College,
Correspondence to: Nick Kaplinsky ()
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18
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Waters ER, Vierling E. Plant small heat shock proteins - evolutionary and functional diversity. THE NEW PHYTOLOGIST 2020; 227:24-37. [PMID: 32297991 DOI: 10.1111/nph.16536] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/21/2020] [Indexed: 05/22/2023]
Abstract
Small heat shock proteins (sHSPs) are an ubiquitous protein family found in archaea, bacteria and eukaryotes. In plants, as in other organisms, sHSPs are upregulated by stress and are proposed to act as molecular chaperones to protect other proteins from stress-induced damage. sHSPs share an 'α-crystallin domain' with a β-sandwich structure and a diverse N-terminal domain. Although sHSPs are 12-25 kDa polypeptides, most assemble into oligomers with ≥ 12 subunits. Plant sHSPs are particularly diverse and numerous; some species have as many as 40 sHSPs. In angiosperms this diversity comprises ≥ 11 sHSP classes encoding proteins targeted to the cytosol, nucleus, endoplasmic reticulum, chloroplasts, mitochondria and peroxisomes. The sHSPs underwent a lineage-specific gene expansion, diversifying early in land plant evolution, potentially in response to stress in the terrestrial environment, and expanded again in seed plants and again in angiosperms. Understanding the structure and evolution of plant sHSPs has progressed, and a model for their chaperone activity has been proposed. However, how the chaperone model applies to diverse sHSPs and what processes sHSPs protect are far from understood. As more plant genomes and transcriptomes become available, it will be possible to explore theories of the evolutionary pressures driving sHSP diversification.
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Affiliation(s)
- Elizabeth R Waters
- Biology Department, San Diego State University, San Diego, CA, 92182, USA
| | - Elizabeth Vierling
- Department of Biochemistry and Molecular Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
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19
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Velinov V, Vaseva I, Zehirov G, Zhiponova M, Georgieva M, Vangheluwe N, Beeckman T, Vassileva V. Overexpression of the NMig1 Gene Encoding a NudC Domain Protein Enhances Root Growth and Abiotic Stress Tolerance in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2020; 11:815. [PMID: 32595686 PMCID: PMC7301909 DOI: 10.3389/fpls.2020.00815] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/20/2020] [Indexed: 05/31/2023]
Abstract
The family of NudC proteins has representatives in all eukaryotes and plays essential evolutionarily conserved roles in many aspects of organismal development and stress response, including nuclear migration, cell division, folding and stabilization of other proteins. This study investigates an undescribed Arabidopsis homolog of the Aspergillus nidulans NudC gene, named NMig1 (for Nuclear Migration 1), which shares high sequence similarity to other plant and mammalian NudC-like genes. Expression of NMig1 was highly upregulated in response to several abiotic stress factors, such as heat shock, drought and high salinity. Constitutive overexpression of NMig1 led to enhanced root growth and lateral root development under optimal and stress conditions. Exposure to abiotic stress resulted in relatively weaker inhibition of root length and branching in NMig1-overexpressing plants, compared to the wild-type Col-0. The expression level of antioxidant enzyme-encoding genes and other stress-associated genes was considerably induced in the transgenic plants. The increased expression of the major antioxidant enzymes and greater antioxidant potential correlated well with the lower levels of reactive oxygen species (ROS) and lower lipid peroxidation. In addition, the overexpression of NMig1 was associated with strong upregulation of genes encoding heat shock proteins and abiotic stress-associated genes. Therefore, our data demonstrate that the NudC homolog NMig1 could be considered as a potentially important target gene for further use, including breeding more resilient crops with improved root architecture under abiotic stress.
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Affiliation(s)
- Valentin Velinov
- Department of Molecular Biology and Genetics, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Irina Vaseva
- Department of Molecular Biology and Genetics, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Grigor Zehirov
- Department of Molecular Biology and Genetics, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Miroslava Zhiponova
- Department of Plant Physiology, Faculty of Biology, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Mariana Georgieva
- Department of Molecular Biology and Genetics, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Nick Vangheluwe
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Plant Systems Biology, Ghent, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Plant Systems Biology, Ghent, Belgium
| | - Valya Vassileva
- Department of Molecular Biology and Genetics, Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
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20
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Ma X, Su Z, Ma H. Molecular genetic analyses of abiotic stress responses during plant reproductive development. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2870-2885. [PMID: 32072177 PMCID: PMC7260722 DOI: 10.1093/jxb/eraa089] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/12/2020] [Indexed: 05/20/2023]
Abstract
Plant responses to abiotic stresses during vegetative growth have been extensively studied for many years. Daily environmental fluctuations can have dramatic effects on plant vegetative growth at multiple levels, resulting in molecular, cellular, physiological, and morphological changes. Plants are even more sensitive to environmental changes during reproductive stages. However, much less is known about how plants respond to abiotic stresses during reproduction. Fortunately, recent advances in this field have begun to provide clues about these important processes, which promise further understanding and a potential contribution to maximize crop yield under adverse environments. Here we summarize information from several plants, focusing on the possible mechanisms that plants use to cope with different types of abiotic stresses during reproductive development, and present a tentative molecular portrait of plant acclimation during reproductive stages. Additionally, we discuss strategies that plants use to balance between survival and productivity, with some comparison among different plants that have adapted to distinct environments.
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Affiliation(s)
- Xinwei Ma
- Department of Biology and the Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Zhao Su
- Department of Biology and the Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
- Correspondence:
| | - Hong Ma
- Department of Biology and the Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
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21
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Ding H, Wu Y, Yuan G, Mo S, Chen Q, Xu X, Wu X, Ge C. In-depth proteome analysis reveals multiple pathways involved in tomato SlMPK1-mediated high-temperature responses. PROTOPLASMA 2020; 257:43-59. [PMID: 31359223 DOI: 10.1007/s00709-019-01419-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
High temperature (HT) is one of the major environmental factors which limits plant growth and yield. The mitogen-activated protein kinase (MAPK) plays vital roles in environmental stress responses. However, the mechanisms triggered by MAPKs in plants in response to HT are still extremely limited. In this study, the proteomic data of differences between SlMPK1 RNA-interference mutant (SlMPK1i) and wild type and of tomato (Solanum lycopersicum) plants under HT stress using isobaric tags for relative and absolute quantitation (iTRAQ) was re-analyzed in depth. In total, 168 differently expressed proteins (DEPs) were identified in response to HT stress, including 38 DEPs only found in wild type, and 84 DEPs specifically observed in SlMPK1i after HT treatment. The majority of higher expression of 84 DEPs were annotated into photosynthesis, oxidation-reduction process, protein folding, translation, proteolysis, stress response, and amino acid biosynthetic process. More importantly, SlMPK1-mediated photosynthesis was confirmed by the physiological characterization of SlMPK1i with a higher level of photosynthetic capacity under HT stress. Overall, the results reveal a set of potential candidate proteins helping to further understand the intricate regulatory network regulated by SlMPK1 in response to HT.
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Affiliation(s)
- Haidong Ding
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China.
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China.
| | - Yuan Wu
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Guibo Yuan
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Shuangrong Mo
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Qi Chen
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Xiaoying Xu
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Xiaoxia Wu
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Cailin Ge
- Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China
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22
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Tang X, Hao YJ, Lu JX, Lu G, Zhang T. Transcriptomic analysis reveals the mechanism of thermosensitive genic male sterility (TGMS) of Brassica napus under the high temperature inducement. BMC Genomics 2019; 20:644. [PMID: 31409283 PMCID: PMC6691554 DOI: 10.1186/s12864-019-6008-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/30/2019] [Indexed: 11/24/2022] Open
Abstract
Background The thermo-sensitive genic male sterility (TGMS) of Brassica napus facilitates reproductive researches and hybrid seed production. Considering the complexity and little information about the molecular mechanism involved in B. napus TGMS, comparative transcriptomic analyses were peroformed for the sterile (160S-MS) and fertile (160S-MF) flowers to identify potential crucial genes and pathways associated with TGMS. Results In total, RNA-seq analysis showed that 2202 genes (561 up-regulated and 1641 down-regulated) were significantly differentially expressed in the fertile flowers of 160S-MF at 25 °C when compared the sterile flower of 160S-MS at 15 °C. Detailed analysis revealed that expression changes in genes encoding heat shock proteins, antioxidant, skeleton protein, GTPase and calmodulin might be involved in TGMS of B. napus. Moreover, gene expression of some key members in plant hormone signaling pathways, such as auxin, gibberellins, jasmonic acid, abscisic acid, brassinosteroid signalings, were significantly surppressed in the flowers of 160S, suggesting that these genes might be involved in the regulation in B. napus TGMS. Here, we also found that transcription factor MADS, NFY, HSF, MYB/C and WRKY might play a crucial role in male fertility under the high temperature condition. Conclusion High temperature can significant affect gene expression in the flowers. The findings in the current study improve our understanding of B. napus TGMS at the molecular level and also provide an effective foundation for male fertility researches in other important economic crops. Electronic supplementary material The online version of this article (10.1186/s12864-019-6008-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xin Tang
- College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - You-Jin Hao
- College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Jun-Xing Lu
- College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Geng Lu
- College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Tao Zhang
- College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China.
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23
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Li S, Yu J, Li Y, Zhang H, Bao X, Bian J, Xu C, Wang X, Cai X, Wang Q, Wang P, Guo S, Miao Y, Chen S, Qin Z, Dai S. Heat-Responsive Proteomics of a Heat-Sensitive Spinach Variety. Int J Mol Sci 2019; 20:ijms20163872. [PMID: 31398909 PMCID: PMC6720816 DOI: 10.3390/ijms20163872] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/28/2019] [Accepted: 08/06/2019] [Indexed: 01/20/2023] Open
Abstract
High temperatures seriously limit plant growth and productivity. Investigating heat-responsive molecular mechanisms is important for breeding heat-tolerant crops. In this study, heat-responsive mechanisms in leaves from a heat-sensitive spinach (Spinacia oleracea L.) variety Sp73 were investigated using two-dimensional gel electrophoresis (2DE)-based and isobaric tags for relative and absolute quantification (iTRAQ)-based proteomics approaches. In total, 257 heat-responsive proteins were identified in the spinach leaves. The abundance patterns of these proteins indicated that the photosynthesis process was inhibited, reactive oxygen species (ROS) scavenging pathways were initiated, and protein synthesis and turnover, carbohydrate and amino acid metabolism were promoted in the spinach Sp73 in response to high temperature. By comparing this with our previous results in the heat-tolerant spinach variety Sp75, we found that heat inhibited photosynthesis, as well as heat-enhanced ROS scavenging, stress defense pathways, carbohydrate and energy metabolism, and protein folding and turnover constituting a conservative strategy for spinach in response to heat stress. However, the heat-decreased biosynthesis of chlorophyll and carotenoid as well as soluble sugar content in the variety Sp73 was quite different from that in the variety Sp75, leading to a lower capability for photosynthetic adaptation and osmotic homeostasis in Sp73 under heat stress. Moreover, the heat-reduced activities of SOD and other heat-activated antioxidant enzymes in the heat-sensitive variety Sp73 were also different from the heat-tolerant variety Sp75, implying that the ROS scavenging strategy is critical for heat tolerance.
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Affiliation(s)
- Shanshan Li
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Harbin 150040, China
- College of Life Sciences and Agriculture and Forestry, Qiqihar University, Qiqihar 161006, China
| | - Juanjuan Yu
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Harbin 150040, China
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Ying Li
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Harbin 150040, China
| | - Heng Zhang
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Xuesong Bao
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Harbin 150040, China
| | - Jiayi Bian
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Chenxi Xu
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Xiaoli Wang
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Xiaofeng Cai
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Quanhua Wang
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Pengcheng Wang
- Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, Shanghai 201602, China
| | - Siyi Guo
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475004, China
| | - Yuchen Miao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475004, China
| | - Sixue Chen
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA
| | - Zhi Qin
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China.
| | - Shaojun Dai
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China.
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Harbin 150040, China.
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24
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Liu S, Wang J, Jiang S, Wang H, Gao Y, Zhang H, Li D, Song F. Tomato SlSAP3, a member of the stress-associated protein family, is a positive regulator of immunity against Pseudomonas syringae pv. tomato DC3000. MOLECULAR PLANT PATHOLOGY 2019; 20:815-830. [PMID: 30907488 PMCID: PMC6637894 DOI: 10.1111/mpp.12793] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Tomato stress-associated proteins (SAPs) belong to A20/AN1 zinc finger protein family, some of which have been shown to play important roles in plant stress responses. However, little is known about the functions and underlying molecular mechanisms of SAPs in plant immune responses. In the present study, we reported the function of tomato SlSAP3 in immunity to Pseudomonas syringae pv. tomato (Pst) DC3000. Silencing of SlSAP3 attenuated while overexpression of SlSAP3 in transgenic tomato increased immunity to Pst DC3000, accompanied with reduced and increased Pst DC3000-induced expression of SA signalling and defence genes, respectively. Flg22-induced reactive oxygen species (ROS) burst and expression of PAMP-triggered immunity (PTI) marker genes SlPTI5 and SlLRR22 were strengthened in SlSAP3-OE plants but were weakened in SlSAP3-silenced plants. SlSAP3 interacted with two SlBOBs and the A20 domain in SlSAP3 is critical for the SlSAP3-SlBOB1 interaction. Silencing of SlBOB1 and co-silencing of all three SlBOB genes conferred increased resistance to Pst DC3000, accompanied with increased Pst DC3000-induced expression of SA signalling and defence genes. These data demonstrate that SlSAP3 acts as a positive regulator of immunity against Pst DC3000 in tomato through the SA signalling and that SlSAP3 may exert its function in immunity by interacting with other proteins such as SlBOBs, which act as negative regulators of immunity against Pst DC3000 in tomato.
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Affiliation(s)
- Shixia Liu
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Jiali Wang
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Siyu Jiang
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Hui Wang
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Yizhou Gao
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Huijuan Zhang
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
- College of Life ScienceTaizhou UniversityTaizhouZhejiang318000China
| | - Dayong Li
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
| | - Fengming Song
- National Key Laboratory for Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang310058China
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25
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Agarwal P, Khurana P. Functional characterization of HSFs from wheat in response to heat and other abiotic stress conditions. Funct Integr Genomics 2019; 19:497-513. [PMID: 30868385 DOI: 10.1007/s10142-019-00666-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 02/07/2019] [Accepted: 02/07/2019] [Indexed: 10/27/2022]
Abstract
High temperature stress is known to be one of the major limiting factors for wheat productivity worldwide. HSFs are known to play a central role in heat stress response in plants. Hence, the current study is an attempt to explore an in-depth involvement of TaHSFs in stress responses mainly in heat and other abiotic responses like salinity, drought, and cold stress. Effort was made to understand as how the expression of HSF is able to define the differential robustness of wheat varieties. Subsequent studies were done to establish the involvement of any temporal or spatial cue on the behavior of these TaHSFs under heat stress conditions. A total of 53 HSFs have been reported until date and out of these, few TaHSFs including one identified in our library, i.e., TaHsfA2d (Traes_4AS_52EB860E7.2), were selected for the expression analysis studies. The expressions of these HSFs were found to differ in both magnitude and sensitivity to the heat as well as other abiotic stresses. Moreover, these TaHSFs displayed wide range of expression in different tissues like anther, ovary, lemma, palea, awn, glume, and different stages of seed development. Thus, TaHSFs appear to be under dynamic expression as they respond in a unique manner to spatial, temporal, and environmental cues. Therefore, these HSFs can be used as candidate genes for understanding the molecular mechanism under heat stress and can be utilized for improving crop yield by enhancing the tolerance and survival of the crop plants under adverse environment conditions.
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Affiliation(s)
- Preeti Agarwal
- Department of Plant Molecular Biology, University of Delhi South Campus, Dhaula Kuan, New Delhi, 110021, India
| | - Paramjit Khurana
- Department of Plant Molecular Biology, University of Delhi South Campus, Dhaula Kuan, New Delhi, 110021, India.
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26
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Lin CW, Fu SF, Liu YJ, Chen CC, Chang CH, Yang YW, Huang HJ. Analysis of ambient temperature-responsive transcriptome in shoot apical meristem of heat-tolerant and heat-sensitive broccoli inbred lines during floral head formation. BMC PLANT BIOLOGY 2019; 19:3. [PMID: 30606114 PMCID: PMC6318969 DOI: 10.1186/s12870-018-1613-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 12/20/2018] [Indexed: 05/19/2023]
Abstract
BACKGROUND Head formation of broccoli (Brassica oleracea var. italica) is greatly reduced under high temperature (22 °C and 27 °C). Broccoli inbred lines that are capable of producing heads at high temperatures in summer are varieties that are unique to Taiwan. However, knowledge of the early-activated pathways of broccoli head formation under high temperature is limited. RESULTS We compared heat-tolerant (HT) and heat-sensitive (HS) transcriptome of broccoli under different temperatures. Weighted gene correlation network analysis (WGCNA) revealed that genes involved in calcium signaling pathways, mitogen-activated protein kinase (MAPK) cascades, leucine-rich repeat receptor-like kinases (LRR-RLKs), and genes coding for heat-shock proteins and reactive oxygen species homeostasis shared a similar expression pattern to BoFLC1, which was highly expressed at high temperature (27 °C). Of note, these genes were less expressed in HT than HS broccoli at 22 °C. Co-expression analysis identified a model for LRR-RLKs in survival-reproduction tradeoffs by modulating MAPK- versus phytohormones-signaling during head formation. The difference in head-forming ability in response to heat stress between HT and HS broccoli may result from their differential transcriptome profiles of LRR-RLK genes. High temperature induced JA- as well as suppressed auxin- and cytokinin-related pathways may facilitate a balancing act to ensure fitness at 27 °C. BoFLC1 was less expressed in HT than HS at 22 °C, whereas other FLC homologues were not. Promoter analysis of BoFLC1 showed fewer AT dinucleotide repeats in HT broccoli. These results provide insight into the early activation of stress- or development-related pathways during head formation in broccoli. The identification of the BoFLC1 DNA biomarker may facilitate breeding of HT broccoli. CONCLUSIONS In this study, HT and HS broccoli genotypes were used to determine the effect of temperature on head formation by transcriptome profiling. On the basis of the expression pattern of high temperature-associated signaling genes, the HS transcriptome may be involved in stress defense instead of transition to the reproductive phase in response to heat stress. Transcriptome profiling of HT and HS broccoli helps in understanding the molecular mechanisms underlying head-forming capacity and in promoting functional marker-assisted breeding.
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Affiliation(s)
- Chung-Wen Lin
- Department of Life Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
| | - Shih-Feng Fu
- Department of Biology, National Changhua University of Education, Changhua, 500 Taiwan
| | - Yu-Ju Liu
- Department of Life Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
| | - Chi-Chien Chen
- Department of Life Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
| | - Ching-Han Chang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
| | - Yau-Wen Yang
- Kale Biotech. Co, No.218, Fudong St., East Dist, Tainan City, 701 Taiwan
| | - Hao-Jen Huang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
- Institute of Tropical Plant Sciences, National Cheng Kung University, No. 1, University Rd, Tainan City, 701 Taiwan
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27
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Wang L, Liu L, Ma Y, Li S, Dong S, Zu W. Transcriptome profilling analysis characterized the gene expression patterns responded to combined drought and heat stresses in soybean. Comput Biol Chem 2018; 77:413-429. [PMID: 30476702 DOI: 10.1016/j.compbiolchem.2018.09.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/14/2018] [Accepted: 09/15/2018] [Indexed: 12/17/2022]
Abstract
Heat and drought are the two major abiotic stress limiting soybean growth and output worldwide. Knowledge of the molecular mechanisms underlying the responses to heat, drought, and combined stress is essential for soybean molecular breeding. In this study, RNA-sequencing was used to determine the transcriptional responses of soybean to heat, drought and combined stress. RNA-sequencing analysis demonstrated that many genes involved in the defense response, photosynthesis, metabolic process, etc. are differentially expressed in response to drought and heat. However, 1468 and 1220 up-regulated and 1146 and 686 down-regulated genes were confirmed as overlapping differentially expressed genes at 8 h and 24 h after treatment, and these genes are mainly involved in transport, binding and defense response. Furthermore, we compared the heat, drought and the combined stress-responsive genes and identified potential new targets for enhancing stress tolerance of soybean. Comparison of single and combined stress suggests the combined stress did not result in a simple additive response, and that there may be a synergistic response to the combination of drought and heat in soybean.
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Affiliation(s)
- Libin Wang
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
| | - Lijun Liu
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
| | - Yuling Ma
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
| | - Shuang Li
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
| | - Shoukun Dong
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China.
| | - Wei Zu
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China.
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28
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Xiang J, Chen X, Hu W, Xiang Y, Yan M, Wang J. Overexpressing heat-shock protein OsHSP50.2 improves drought tolerance in rice. PLANT CELL REPORTS 2018; 37:1585-1595. [PMID: 30099612 DOI: 10.1007/s00299-018-2331-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/06/2018] [Indexed: 05/24/2023]
Abstract
OsHSP50.2, an HSP90 family gene up-regulated by heat and osmotic stress treatments, positively regulates drought stress tolerance probably by modulating ROS homeostasis and osmotic adjustment in rice. Heat-shock proteins (HSPs) serve as molecular chaperones for a variety of client proteins in abiotic stress response and play pivotal roles in protecting plants against stress, but the molecular mechanism remains largely unknown. Here, we report an HSP90 family gene, OsHSP50.2, which acts as a positive regulator in drought stress tolerance in rice (Oryza sativa). OsHSP50.2 was ubiquitously expressed and its transcript level was up-regulated by heat and osmotic stress treatments. Overexpression of OsHSP50.2 in rice reduced water loss and enhanced the transgenic plant tolerance to drought and osmotic stresses. The OsHSP50.2-overexpressing plants exhibited significantly lower levels of electrolyte leakage and malondialdehyde (MDA) and less decrease of chlorophyll than wild-type plants under drought stress. Moreover, the OsHSP50.2-overexpressing plants had significantly higher SOD activity under drought stress compared with the wild type. These results imply that OsHSP50.2 positively regulates drought stress tolerance in rice, probably through the modulation of reactive oxygen species (ROS) homeostasis. Additionally, the OsHSP50.2-overexpressing plants accumulated significantly higher content of proline than the wild type under drought stress, which contributes to the improved protection ability from drought stress damage via osmotic adjustment. Our findings reveal that OsHSP50.2 plays a crucial role in drought stress response, and it may possess high potential usefulness in drought tolerance improvement of rice.
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Affiliation(s)
- Jianhua Xiang
- Institute of Ecological Landscape Restoration, Hunan University of Science and Technology, Taoyuan Rd., Xiangtan, 411201, Hunan, China.
| | - Xinbo Chen
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Wei Hu
- Institute of Ecological Landscape Restoration, Hunan University of Science and Technology, Taoyuan Rd., Xiangtan, 411201, Hunan, China
| | - Yanci Xiang
- Institute of Ecological Landscape Restoration, Hunan University of Science and Technology, Taoyuan Rd., Xiangtan, 411201, Hunan, China
| | - Mingli Yan
- School of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Jieming Wang
- Institute of Ecological Landscape Restoration, Hunan University of Science and Technology, Taoyuan Rd., Xiangtan, 411201, Hunan, China
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29
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Fan L, Wang G, Hu W, Pantha P, Tran KN, Zhang H, An L, Dassanayake M, Qiu QS. Transcriptomic view of survival during early seedling growth of the extremophyte Haloxylon ammodendron. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:475-489. [PMID: 30292980 DOI: 10.1016/j.plaphy.2018.09.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/08/2018] [Accepted: 09/18/2018] [Indexed: 05/27/2023]
Abstract
Seedling establishment in an extreme environment requires an integrated genomic and physiological response to survive multiple abiotic stresses. The extremophyte, Haloxylon ammodendron is a pioneer species capable of colonizing temperate desert sand dunes. We investigated the induced and basal transcriptomes in H. ammodendron under water-deficit stress during early seedling establishment. We find that not only drought-responsive genes, but multiple genes in pathways associated with salt, osmotic, cold, UV, and high-light stresses were induced, suggesting an altered regulatory stress response system. Additionally, H. ammodendron exhibited enhanced biotic stress tolerance by down-regulation of genes that were generally up-regulated during pathogen entry in susceptible plants. By comparing the H. ammodendron basal transcriptome to six closely related transcriptomes in Amaranthaceae, we detected enriched basal level transcripts in H. ammodendron that shows preadaptation to abiotic stress and pathogens. We found transcripts that were generally maintained at low levels and some induced only under abiotic stress in the stress-sensitive model, Arabidopsis thaliana to be highly expressed under basal conditions in the Amaranthaceae transcriptomes including H. ammodendron. H. ammodendron shows coordinated expression of genes that regulate stress tolerance and seedling development resource allocation to support survival against multiple stresses in a sand dune dominated temperate desert environment.
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Affiliation(s)
- Ligang Fan
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Guannan Wang
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Wei Hu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Pramod Pantha
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Kieu-Nga Tran
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Hua Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Lizhe An
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Maheshi Dassanayake
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA.
| | - Quan-Sheng Qiu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China.
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30
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Zhang L, Hu W, Gao Y, Pan H, Zhang Q. A cytosolic class II small heat shock protein, PfHSP17.2, confers resistance to heat, cold, and salt stresses in transgenic Arabidopsis. Genet Mol Biol 2018; 41:649-660. [PMID: 30235397 PMCID: PMC6136373 DOI: 10.1590/1678-4685-gmb-2017-0206] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 01/11/2018] [Indexed: 11/22/2022] Open
Abstract
We cloned and characterized the full-length coding sequence of a small heat shock (sHSP) gene, PfHSP17.2, from Primula forrestii leaves following heat stress treatment. Homology and phylogenetic analysis suggested that PfHSP17.2 is a cytosolic class II sHSP, which was further supported by the cytosolic localization of transient expression of PfHSP17.2 fused with green fluorescent protein reporter. Expression analysis showed that PfHSP17.2 was highly inducible by heat stress in almost all the vegetative and generative tissues and was expressed under salt, cold, and oxidative stress conditions as well. Moreover, the expression of PfHSP17.2 in P. forrestii was detected in certain developmental growth stages. Transgenic Arabidopsis thaliana constitutively expressing PfHSP17.2 displayed increased thermotolerance and higher resistance to salt and cold compared with wild type plants. It is suggested that PfHSP17.2 plays a key role in heat and other abiotic stresses.
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Affiliation(s)
- Lu Zhang
- Department of Landscape Architecture, School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China.,College of Landscape Architecture, Beijing Forestry University, China National Engineering Research Center for Floriculture, Beijing, China
| | - Weijuan Hu
- College of Landscape Architecture, Beijing Forestry University, China National Engineering Research Center for Floriculture, Beijing, China
| | - Yike Gao
- College of Landscape Architecture, Beijing Forestry University, China National Engineering Research Center for Floriculture, Beijing, China
| | - Huitang Pan
- College of Landscape Architecture, Beijing Forestry University, China National Engineering Research Center for Floriculture, Beijing, China
| | - Qixiang Zhang
- College of Landscape Architecture, Beijing Forestry University, China National Engineering Research Center for Floriculture, Beijing, China
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Genetic Interactions Between BOB1 and Multiple 26S Proteasome Subunits Suggest a Role for Proteostasis in Regulating Arabidopsis Development. G3-GENES GENOMES GENETICS 2018; 8:1379-1390. [PMID: 29487187 PMCID: PMC5873925 DOI: 10.1534/g3.118.300496] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Protein folding and degradation are both required for protein quality control, an essential cellular activity that underlies normal growth and development. We investigated how BOB1, an Arabidopsis thaliana small heat shock protein, maintains normal plant development. bob1 mutants exhibit organ polarity defects and have expanded domains of KNOX gene expression. Some of these phenotypes are ecotype specific suggesting that other genes function to modify them. Using a genetic approach we identified an interaction between BOB1 and FIL, a gene required for abaxial organ identity. We also performed an EMS enhancer screen using the bob1-3 allele to identify pathways that are sensitized by a loss of BOB1 function. This screen identified genetic, but not physical, interactions between BOB1 and the proteasome subunit RPT2a. Two other proteasome subunits, RPN1a and RPN8a, also interact genetically with BOB1. Both BOB1 and the BOB1-interacting proteasome subunits had previously been shown to interact genetically with the transcriptional enhancers AS1 and AS2, genes known to regulate both organ polarity and KNOX gene expression. Our results suggest a model in which BOB1 mediated protein folding and proteasome mediated protein degradation form a functional proteostasis module required for ensuring normal plant development.
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Wen F, Wu X, Li T, Jia M, Liu X, Li P, Zhou X, Ji X, Yue X. Genome-wide survey of heat shock factors and heat shock protein 70s and their regulatory network under abiotic stresses in Brachypodium distachyon. PLoS One 2017; 12:e0180352. [PMID: 28683139 PMCID: PMC5500289 DOI: 10.1371/journal.pone.0180352] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 06/14/2017] [Indexed: 11/18/2022] Open
Abstract
The heat shock protein 70s (Hsp70s) and heat shock factors (Hsfs) play key roles in protecting plant cells or tissues from various abiotic stresses. Brachypodium distachyon, recently developed an excellent model organism for functional genomics research, is related to the major cereal grain species. Although B. distachyon genome has been fully sequenced, the information of Hsf and Hsp70 genes and especially the regulatory network between Hsfs and Hsp70s remains incomplete. Here, a total of 24 BdHsfs and 29 BdHsp70s were identified in the genome by bioinformatics analysis and the regulatory network between Hsfs and Hsp70s were performed in this study. Based on highly conserved domain and motif analysis, BdHsfs were grouped into three classes, and BdHsp70s divided into six groups, respectively. Most of Hsf proteins contain five conserved domains: DBD, HR-A/B region, NLS and NES motifs and AHA domain, while Hsp70 proteins have three conserved domains: N-terminal nucleotide binding domain, peptide binding domain and a variable C-terminal lid region. Expression data revealed a large number of BdHsfs and BdHsp70s were induced by HS challenge, and a previous heat acclimation could induce the acquired thermotolerance to help seedling suffer the severe HS challenge, suggesting that the BdHsfs and BdHsp70s played a role in alleviating the damage by HS. The comparison revealed that, most BdHsfs and BdHsp70s genes responded to multiple abiotic stresses in an overlapping relationship, while some of them were stress specific response genes. Moreover, co-expression relationships and predicted protein-protein interaction network implied that class A and B Hsfs played as activator and repressors, respectively, suggesting that BdHsp70s might be regulated by both the activation and the repression mechanisms under stress condition. Our genomics analysis of BdHsfs and BdHsp70s provides important evolutionary and functional characterization for further investigation of the accurate regulatory mechanisms among Hsfs and Hsp70s in herbaceous plants.
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Affiliation(s)
- Feng Wen
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
- * E-mail:
| | - Xiaozhu Wu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Tongjian Li
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Mingliang Jia
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Xinshen Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Peng Li
- Shanghai Chenshan Plant Science Research Center, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences (CAS). Shanghai Chenshan Botanic Garden, Songjiang, Shanghai, China
| | - Xiaojian Zhou
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Xinxin Ji
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Xiaomin Yue
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
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Jia J, Zhou J, Shi W, Cao X, Luo J, Polle A, Luo ZB. Comparative transcriptomic analysis reveals the roles of overlapping heat-/drought-responsive genes in poplars exposed to high temperature and drought. Sci Rep 2017; 7:43215. [PMID: 28233854 PMCID: PMC5324098 DOI: 10.1038/srep43215] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 01/20/2017] [Indexed: 02/03/2023] Open
Abstract
High temperature (HT) and drought are both critical factors that constrain tree growth and survival under global climate change, but it is surprising that the transcriptomic reprogramming and physiological relays involved in the response to HT and/or drought remain unknown in woody plants. Thus, Populus simonii saplings were exposed to either ambient temperature or HT combined with sufficient watering or drought. RNA-sequencing analysis showed that a large number of genes were differentially expressed in poplar roots and leaves in response to HT and/or desiccation, but only a small number of these genes were identified as overlapping heat-/drought-responsive genes that are mainly involved in RNA regulation, transport, hormone metabolism, and stress. Furthermore, the overlapping heat-/drought-responsive genes were co-expressed and formed hierarchical genetic regulatory networks under each condition compared. HT-/drought-induced transcriptomic reprogramming is linked to physiological relays in poplar roots and leaves. For instance, HT- and/or drought-induced abscisic acid accumulation and decreases in auxin and other phytohormones corresponded well with the differential expression of a few genes involved in hormone metabolism. These results suggest that overlapping heat-/drought-responsive genes will play key roles in the transcriptional and physiological reconfiguration of poplars to HT and/or drought under future climatic scenarios.
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Affiliation(s)
- Jingbo Jia
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.,College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Jing Zhou
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Wenguang Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Xu Cao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Jie Luo
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Andrea Polle
- Büsgen-Institute, Department of Forest Botany and Tree Physiology, Georg-August University, Büsgenweg 2, 37077 Göttingen, Germany
| | - Zhi-Bin Luo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
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Smith AR, Zhao D. Sterility Caused by Floral Organ Degeneration and Abiotic Stresses in Arabidopsis and Cereal Grains. FRONTIERS IN PLANT SCIENCE 2016; 7:1503. [PMID: 27790226 PMCID: PMC5064672 DOI: 10.3389/fpls.2016.01503] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 09/21/2016] [Indexed: 05/18/2023]
Abstract
Natural floral organ degeneration or abortion results in unisexual or fully sterile flowers, while abiotic stresses lead to sterility after initiation of floral reproductive organs. Since normal flower development is essential for plant sexual reproduction and crop yield, it is imperative to have a better understanding of plant sterility under regular and stress conditions. Here, we review the functions of ABC genes together with their downstream genes in floral organ degeneration and the formation of unisexual flowers in Arabidopsis and several agriculturally significant cereal grains. We further explore the roles of hormones, including auxin, brassinosteroids, jasmonic acid, gibberellic acid, and ethylene, in floral organ formation and fertility. We show that alterations in genes affecting hormone biosynthesis, hormone transport and perception cause loss of stamens/carpels, abnormal floral organ development, poor pollen production, which consequently result in unisexual flowers and male/female sterility. Moreover, abiotic stresses, such as heat, cold, and drought, commonly affect floral organ development and fertility. Sterility is induced by abiotic stresses mostly in male floral organ development, particularly during meiosis, tapetum development, anthesis, dehiscence, and fertilization. A variety of genes including those involved in heat shock, hormone signaling, cold tolerance, metabolisms of starch and sucrose, meiosis, and tapetum development are essential for plants to maintain normal fertility under abiotic stress conditions. Further elucidation of cellular, biochemical, and molecular mechanisms about regulation of fertility will improve yield and quality for many agriculturally valuable crops.
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Affiliation(s)
| | - Dazhong Zhao
- Department of Biological Sciences, University of Wisconsin-Milwaukee, MilwaukeeWI, USA
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35
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Zhang Y, Zou B, Lu S, Ding Y, Liu H, Hua J. Expression and promoter analysis of the OsHSP16.9C gene in rice. Biochem Biophys Res Commun 2016; 479:260-265. [DOI: 10.1016/j.bbrc.2016.09.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 09/12/2016] [Indexed: 11/26/2022]
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36
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Kissen R, Øverby A, Winge P, Bones AM. Allyl-isothiocyanate treatment induces a complex transcriptional reprogramming including heat stress, oxidative stress and plant defence responses in Arabidopsis thaliana. BMC Genomics 2016; 17:740. [PMID: 27639974 PMCID: PMC5027104 DOI: 10.1186/s12864-016-3039-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 08/24/2016] [Indexed: 01/30/2023] Open
Abstract
Background Isothiocyanates (ITCs) are degradation products of the plant secondary metabolites glucosinolates (GSLs) and are known to affect human health as well as plant herbivores and pathogens. To investigate the processes engaged in plants upon exposure to isothiocyanate we performed a genome scale transcriptional profiling of Arabidopsis thaliana at different time points in response to an exogenous treatment with allyl-isothiocyanate. Results The treatment triggered a substantial response with the expression of 431 genes affected (P < 0.05 and log2 ≥ 1 or ≤ -1) already after 30 min and that of 3915 genes affected after 9 h of exposure, most of the affected genes being upregulated. These are involved in a considerable number of different biological processes, some of which are described in detail: glucosinolate metabolism, sulphate uptake and assimilation, heat stress response, oxidative stress response, elicitor perception, plant defence and cell death mechanisms. Conclusion Exposure of Arabidopsis thaliana to vapours of allyl-isothiocyanate triggered a rapid and substantial transcriptional response affecting numerous biological processes. These include multiple stress stimuli such as heat stress response and oxidative stress response, cell death and sulphur secondary defence metabolism. Hence, effects of isothiocyanates on plants previously reported in the literature were found to be regulated at the gene expression level. This opens some avenues for further investigations to decipher the molecular mechanisms underlying the effects of isothiocyanates on plants. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3039-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ralph Kissen
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, Norway
| | - Anders Øverby
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, Norway.,Present address: Center for Clinical Pharmacy and Clinical Sciences, School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo, Japan
| | - Per Winge
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, Norway
| | - Atle M Bones
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, Norway.
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Jia J, Li S, Cao X, Li H, Shi W, Polle A, Liu TX, Peng C, Luo ZB. Physiological and transcriptional regulation in poplar roots and leaves during acclimation to high temperature and drought. PHYSIOLOGIA PLANTARUM 2016; 157:38-53. [PMID: 26497326 DOI: 10.1111/ppl.12400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
To elucidate the physiological and transcriptional regulatory mechanisms that underlie the responses of poplars to high temperature (HT) and/or drought in woody plants, we exposed Populus alba × Populus tremula var. glandulosa saplings to ambient temperature (AT) or HT under 80 or 40% field capacities (FC), or no watering. HT increased the foliar total carbon (C) concentrations, and foliar δ(13) C and δ(18) O. HT triggered heat stress signaling via increasing levels of abscisic acid (ABA) and indole-3-acetic acid (IAA) in poplar roots and leaves. After perception of HT, poplars initiated osmotic adjustment by increasing foliar sucrose and root galactose levels. In agreement with the HT-induced heat stress and the changes in the levels of ABA and carbohydrates, we detected increased transcript levels of HSP18 and HSP21, as well as NCED3 in the roots and leaves, and the sugar transporter gene STP14 in the roots. Compared with AT, drought induced greater enhancement of foliar δ(13) C and δ(18) O in poplars at HT. Similarly, drought caused greater stimulation of the ABA and foliar glucose levels in poplars at HT than at AT. Correspondingly, desiccation led to greater increases in the mRNA levels of HSP18, HSP21, NCED3, STP14 and INT1 in poplar roots at HT than at AT. These results suggest that HT has detrimental effects on physiological processes and it induces the transcriptional regulation of key genes involved in heat stress responses, ABA biosynthesis and sugar transport and HT can cause greater changes in drought-induced physiological and transcriptional responses in poplar roots and leaves.
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Affiliation(s)
- Jingbo Jia
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100, P. R. China
| | - Shaojun Li
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100, P. R. China
| | - Xu Cao
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100, P. R. China
| | - Hong Li
- College of Plant Protection, Northwest A&F University, Yangling, 712100, P. R. China
| | - Wenguang Shi
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100, P. R. China
| | - Andrea Polle
- Büsgen-Institute, Department of Forest Botany and Tree Physiology, Georg-August University, Göttingen, 37077, Germany
| | - Tong-Xian Liu
- College of Plant Protection, Northwest A&F University, Yangling, 712100, P. R. China
| | - Changhui Peng
- Key Laboratory of Environment and Ecology in Western China of Ministry of Education, College of Forestry, Northwest A&F University, Yangling, 712100, P. R. China
| | - Zhi-Bin Luo
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100, P. R. China
- Key Laboratory of Environment and Ecology in Western China of Ministry of Education, College of Forestry, Northwest A&F University, Yangling, 712100, P. R. China
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Fu Q, Wang W, Zhou T, Yang Y. Emerging roles of NudC family: from molecular regulation to clinical implications. SCIENCE CHINA-LIFE SCIENCES 2016; 59:455-62. [PMID: 26965524 DOI: 10.1007/s11427-016-5029-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 02/03/2016] [Indexed: 12/12/2022]
Abstract
Nuclear distribution gene C (NudC) was first found in Aspergillus nidulans as an upstream regulator of NudF, whose mammalian homolog is Lissencephaly 1 (Lis1). NudC is conserved from fungi to mammals. Vertebrate NudC has three homologs: NudC, NudC-like protein (NudCL), and NudC-like protein 2 (NudCL2). All members of the NudC family share a conserved p23 domain, which possesses chaperone activity both in conjunction with and independently of heat shock protein 90 (Hsp90). Our group and the others found that NudC homologs were involved in cell cycle regulation by stabilizing the components of the LIS1/dynein complex. Additionally, NudC plays important roles in cell migration, ciliogenesis, thrombopoiesis, and the inflammatory response. It has been reported that NudCL is essential for the stability of the dynein intermediate chain and ciliogenesis via its interaction with the dynein 2 complex. Our data showed that NudCL2 regulates the LIS1/dynein pathway by stabilizing LIS1 with Hsp90 chaperone. The fourth distantly related member of the NudC family, CML66, a tumor-associated antigen in human leukemia, contains a p23 domain and appears to promote oncogenesis by regulating the IGF-1R-MAPK signaling pathway. In this review, we summarize our current knowledge of the NudC family and highlight its potential clinical relevance.
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Affiliation(s)
- Qiqin Fu
- Department of Cell Biology and Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Wei Wang
- Department of Cell Biology and Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Tianhua Zhou
- Department of Cell Biology and Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, 310058, China. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China.
| | - Yuehong Yang
- Department of Cell Biology and Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, 310058, China. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China.
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Mostafa I, Zhu N, Yoo MJ, Balmant KM, Misra BB, Dufresne C, Abou-Hashem M, Chen S, El-Domiaty M. New nodes and edges in the glucosinolate molecular network revealed by proteomics and metabolomics of Arabidopsis myb28/29 and cyp79B2/B3 glucosinolate mutants. J Proteomics 2016; 138:1-19. [PMID: 26915584 DOI: 10.1016/j.jprot.2016.02.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/07/2016] [Accepted: 02/17/2016] [Indexed: 12/24/2022]
Abstract
UNLABELLED Glucosinolates present in Brassicales are important for human health and plant defense against insects and pathogens. Here we investigate the proteomes and metabolomes of Arabidopsis myb28/29 and cyp79B2/B3 mutants deficient in aliphatic glucosinolates and indolic glucosinolates, respectively. Quantitative proteomics of the myb28/29 and cyp79B2/B3 mutants led to the identification of 2785 proteins, of which 142 proteins showed significant changes in the two mutants compared to wild type (WT). By mapping the differential proteins using STRING, we detected 59 new edges in the glucosinolate metabolic network. These connections can be classified as primary with direct roles in glucosinolate metabolism, secondary related to plant stress responses, and tertiary involved in other biological processes. Gene Ontology analysis of the differential proteins showed high level of enrichment in the nodes belonging to metabolic process including glucosinolate biosynthesis and response to stimulus. Using metabolomics, we quantified 292 metabolites covering a broad spectrum of metabolic pathways, and 89 exhibited differential accumulation patterns between the mutants and WT. The changing metabolites (e.g., γ-glutamyl amino acids, auxins and glucosinolate hydrolysis products) complement our proteomics findings. This study contributes toward engineering and breeding of glucosinolate profiles in plants in efforts to improve human health, crop quality and productivity. BIOLOGICAL SIGNIFICANCE Glucosinolates in Brassicales constitute an important group of natural metabolites important for plant defense and human health. Its biosynthetic pathways and transcriptional regulation have been well-studied. Using Arabidopsis mutants of important genes in glucosinolate biosynthesis, quantitative proteomics and metabolomics led to identification of many proteins and metabolites that are potentially related to glucosinolate metabolism. This study provides a comprehensive insight into the molecular networks of glucosinolate metabolism, and will facilitate efforts toward engineering and breeding of glucosinolate profiles for enhanced crop defense, and nutritional value.
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Affiliation(s)
- Islam Mostafa
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA; Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Ning Zhu
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA
| | - Mi-Jeong Yoo
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA
| | - Kelly M Balmant
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA; Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA
| | - Biswapriya B Misra
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA
| | - Craig Dufresne
- Thermo Fisher Scientific, West Palm Beach, FL 33407, USA
| | - Maged Abou-Hashem
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Sixue Chen
- Department of Biology, University of Florida, Gainesville, FL 32610, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA; Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA; Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA.
| | - Maher El-Domiaty
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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Guo M, Liu JH, Ma X, Luo DX, Gong ZH, Lu MH. The Plant Heat Stress Transcription Factors (HSFs): Structure, Regulation, and Function in Response to Abiotic Stresses. FRONTIERS IN PLANT SCIENCE 2016; 7:114. [PMID: 26904076 PMCID: PMC4746267 DOI: 10.3389/fpls.2016.00114] [Citation(s) in RCA: 330] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 01/21/2016] [Indexed: 05/18/2023]
Abstract
Abiotic stresses such as high temperature, salinity, and drought adversely affect the survival, growth, and reproduction of plants. Plants respond to such unfavorable changes through developmental, physiological, and biochemical ways, and these responses require expression of stress-responsive genes, which are regulated by a network of transcription factors (TFs), including heat stress transcription factors (HSFs). HSFs play a crucial role in plants response to several abiotic stresses by regulating the expression of stress-responsive genes, such as heat shock proteins (Hsps). In this review, we describe the conserved structure of plant HSFs, the identification of HSF gene families from various plant species, their expression profiling under abiotic stress conditions, regulation at different levels and function in abiotic stresses. Despite plant HSFs share highly conserved structure, their remarkable diversification across plants reflects their numerous functions as well as their integration into the complex stress signaling and response networks, which can be employed in crop improvement strategies via biotechnological intervention.
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Affiliation(s)
- Meng Guo
- Department of Vegetable Science, College of Horticulture, Northwest A&F UniversityYangling, China
| | - Jin-Hong Liu
- Department of Vegetable Science, College of Horticulture, Northwest A&F UniversityYangling, China
| | - Xiao Ma
- Department of Vegetable Science, College of Horticulture, Northwest A&F UniversityYangling, China
| | - De-Xu Luo
- Vegetable Research and Development Centre, Huaiyin Institute of Agricultural Sciences in Jiangsu Xuhuai RegionHuaian, China
| | - Zhen-Hui Gong
- Department of Vegetable Science, College of Horticulture, Northwest A&F UniversityYangling, China
- *Correspondence: Zhen-Hui Gong
| | - Ming-Hui Lu
- Department of Vegetable Science, College of Horticulture, Northwest A&F UniversityYangling, China
- Ming-Hui Lu
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41
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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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Wan XL, Zhou Q, Wang YY, Wang WE, Bao MZ, Zhang JW. Identification of heat-responsive genes in carnation (Dianthus caryophyllus L.) by RNA-seq. FRONTIERS IN PLANT SCIENCE 2015; 6:519. [PMID: 26236320 PMCID: PMC4500917 DOI: 10.3389/fpls.2015.00519] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 06/26/2015] [Indexed: 05/04/2023]
Abstract
Carnation (Dianthus caryophyllus L.) is an important flower crop, having substantial commercial value as a cut-flower due to the long vase-life and wide array of flower colors and forms. Standard carnation varieties perform well under cool climates but are very susceptible to high temperatures which adversely affect the yield and the quality of the cut-flowers. Despite several studies of carnation contributing to the number of expressed sequence tags (ESTs), transcriptomic information of this species remains very limited, particularly regarding abiotic stress-related genes. Here, transcriptome analysis was performed to generate expression profiles of heat stress (HS)-responsive genes in carnation. We sequenced a cDNA library constructed with mixed RNA from carnation leaves subjected to 42°C HS (0, 0.5, 1, and 2 h) and 46°C HS (0.5, 1, and 2 h), and obtained 45,604,882 high quality paired-end reads. After de novo assembly and quantitative assessment 99,255 contigs were generated with an average length of 1053 bp. We then obtained functional annotations by aligning contigs with public protein databases including NR, SwissProt, KEGG, and COG. Using the above carnation transcriptome as the reference, we compared the effects of high temperature treatments (42°C: duration 0.5, 2, or 12 h) delivered to aseptic carnation seedlings, relative to untreated controls, using the FPKM metric. Overall, 11,471 genes were identified which showed a significant response to one or more of the three HS treatment times. In addition, based on GO and metabolic pathway enrichment analyses, a series of candidate genes involved in thermo-tolerance responses were selected and characterized. This study represents the first expression profiling analysis of D. caryophyllus under heat stress treatments. Numerous genes were found to be induced in response to HS, the study of which may advance our understanding of heat response of carnation.
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Affiliation(s)
| | | | | | | | | | - Jun Wei Zhang
- *Correspondence: Jun Wei Zhang, Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei, China
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Kaur H, Petla BP, Kamble NU, Singh A, Rao V, Salvi P, Ghosh S, Majee M. Differentially expressed seed aging responsive heat shock protein OsHSP18.2 implicates in seed vigor, longevity and improves germination and seedling establishment under abiotic stress. FRONTIERS IN PLANT SCIENCE 2015; 6:713. [PMID: 26442027 PMCID: PMC4568394 DOI: 10.3389/fpls.2015.00713] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 08/25/2015] [Indexed: 05/20/2023]
Abstract
Small heat shock proteins (sHSPs) are a diverse group of proteins and are highly abundant in plant species. Although majority of these sHSPs were shown to express specifically in seed, their potential function in seed physiology remains to be fully explored. Our proteomic analysis revealed that OsHSP18.2, a class II cytosolic HSP is an aging responsive protein as its abundance significantly increased after artificial aging in rice seeds. OsHSP18.2 transcript was found to markedly increase at the late maturation stage being highly abundant in dry seeds and sharply decreased after germination. Our biochemical study clearly demonstrated that OsHSP18.2 forms homooligomeric complex and is dodecameric in nature and functions as a molecular chaperone. OsHSP18.2 displayed chaperone activity as it was effective in preventing thermal inactivation of Citrate Synthase. Further, to analyze the function of this protein in seed physiology, seed specific Arabidopsis overexpression lines for OsHSP18.2 were generated. Our subsequent functional analysis clearly demonstrated that OsHSP18.2 has ability to improve seed vigor and longevity by reducing deleterious ROS accumulation in seeds. In addition, transformed Arabidopsis seeds also displayed better performance in germination and cotyledon emergence under adverse conditions. Collectively, our work demonstrates that OsHSP18.2 is an aging responsive protein which functions as a molecular chaperone and possibly protect and stabilize the cellular proteins from irreversible damage particularly during maturation drying, desiccation and aging in seeds by restricting ROS accumulation and thereby improves seed vigor, longevity and seedling establishment.
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Affiliation(s)
| | | | | | | | | | | | | | - Manoj Majee
- *Correspondence: Manoj Majee, National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India,
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Wang L, Guo Y, Jia L, Chu H, Zhou S, Chen K, Wu D, Zhao L. Hydrogen peroxide acts upstream of nitric oxide in the heat shock pathway in Arabidopsis seedlings. PLANT PHYSIOLOGY 2014; 164:2184-96. [PMID: 24510762 PMCID: PMC3982771 DOI: 10.1104/pp.113.229369] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 02/04/2014] [Indexed: 05/18/2023]
Abstract
We previously reported that nitric oxide (NO) functions as a signal in thermotolerance. To illustrate its relationship with hydrogen peroxide (H₂O₂) in the tolerance of Arabidopsis (Arabidopsis thaliana) to heat shock (HS), we investigated the effects of heat on Arabidopsis seedlings of the following types: the wild type; three NADPH oxidase-defective mutants that exhibit reduced endogenous H₂O₂ levels (atrbohB, atrbohD, and atrbohB/D); and a mutant that is resistant to inhibition by fosmidomycin (noa1, for nitric oxide-associated protein1). After HS, the NO levels in atrbohB, atrbohD, and atrbohB/D seedlings were lower than that in wild-type seedlings. Treatment of the seedlings with sodium nitroprusside or S-nitroso-N-acetylpenicillamine partially rescued their heat sensitivity, suggesting that NO is involved in H₂O₂ signaling as a downstream factor. This point was verified by phenotypic analyses and thermotolerance testing of transgenic seedlings that overexpressed Nitrate reductase2 and NOA1, respectively, in an atrbohB/D background. Electrophoretic mobility shift assays, western blotting, and real-time reverse transcription-polymerase chain reaction demonstrated that NO stimulated the DNA-binding activity of HS factors and the accumulation of HS proteins through H₂O₂. These data indicate that H₂O₂ acts upstream of NO in thermotolerance, which requires increased HS factor DNA-binding activity and HS protein accumulation.
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Affiliation(s)
| | | | - Lixiu Jia
- Institute of Molecular Cell Biology, School of Life Sciences, and Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang 050024, China (L.W., Y.G., L.J., H.C., S.Z., D.W., L.Z.); and
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China (K.C.)
| | - Hongye Chu
- Institute of Molecular Cell Biology, School of Life Sciences, and Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang 050024, China (L.W., Y.G., L.J., H.C., S.Z., D.W., L.Z.); and
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China (K.C.)
| | - Shuo Zhou
- Institute of Molecular Cell Biology, School of Life Sciences, and Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang 050024, China (L.W., Y.G., L.J., H.C., S.Z., D.W., L.Z.); and
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China (K.C.)
| | - Kunming Chen
- Institute of Molecular Cell Biology, School of Life Sciences, and Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang 050024, China (L.W., Y.G., L.J., H.C., S.Z., D.W., L.Z.); and
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China (K.C.)
| | - Dan Wu
- Institute of Molecular Cell Biology, School of Life Sciences, and Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang 050024, China (L.W., Y.G., L.J., H.C., S.Z., D.W., L.Z.); and
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China (K.C.)
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Mu C, Zhang S, Yu G, Chen N, Li X, Liu H. Overexpression of small heat shock protein LimHSP16.45 in Arabidopsis enhances tolerance to abiotic stresses. PLoS One 2013; 8:e82264. [PMID: 24349240 PMCID: PMC3862632 DOI: 10.1371/journal.pone.0082264] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 10/31/2013] [Indexed: 11/19/2022] Open
Abstract
Small heat shock proteins (smHSPs) play important and extensive roles in plant defenses against abiotic stresses. We cloned a gene for a smHSP from the David Lily (Lilium davidii (E. H. Wilson) Raffill var. Willmottiae), which we named LimHSP16.45 based on its protein molecular weight. Its expression was induced by many kinds of abiotic stresses in both the lily and transgenic plants of Arabidopsis. Heterologous expression enhanced cell viability of the latter under high temperatures, high salt, and oxidative stress, and heat shock granules (HSGs) formed under heat or salinity treatment. Assays of enzymes showed that LimHSP16.45 overexpression was related to greater activity by superoxide dismutase and catalase in transgenic lines. Therefore, we conclude that heterologous expression can protect plants against abiotic stresses by preventing irreversible protein aggregation, and by scavenging cellular reactive oxygen species.
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Affiliation(s)
- Changjun Mu
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
| | - Shijia Zhang
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
| | - Guanzhong Yu
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
| | - Ni Chen
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
| | - Xiaofeng Li
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
| | - Heng Liu
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, P.R. China
- * E-mail:
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Ly V, Hatherell A, Kim E, Chan A, Belmonte MF, Schroeder DF. Interactions between Arabidopsis DNA repair genes UVH6, DDB1A, and DDB2 during abiotic stress tolerance and floral development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2013; 213:88-97. [PMID: 24157211 DOI: 10.1016/j.plantsci.2013.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/28/2013] [Accepted: 09/02/2013] [Indexed: 05/29/2023]
Abstract
Plants must protect themselves from a spectrum of abiotic stresses. For example, the sun is a source of heat, intense light, and DNA-damaging ultraviolet (UV) rays. Damaged DNA binding protein 1A (DDB1A), DDB2, and UV hypersensitive 6 (UVH6)/XPD are all involved in the repair of UV-damaged DNA - DDB1A and DDB2 in the initial damage recognition stage, while the UVH6/XPD helicase unwinds the damaged strand. We find that, as predicted, Arabidopsis ddb1a and ddb2 mutants do not affect uvh6/xpd UV tolerance. In addition, uvh6 is heat sensitive, and ddb1a and ddb2 weakly enhance this trait. The uvh6 ddb1a and uvh6 ddb2 double mutants also exhibit sensitivity to oxidative stress, suggesting a role for DDB1 complexes in heat and oxidative stress tolerance. Finally, we describe a new uvh6 phenotype, the low penetrance production of flowers with five petals and five sepals. ddb1a and ddb2 suppress this phenotype in uvh6 mutants. Interestingly, heat treatment also induces five-petalled flowers in the ddb1a and ddb2 single mutants. Thus UVH6, DDB1A, and DDB2 all contribute to UV tolerance, heat tolerance and floral patterning.
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Affiliation(s)
- Valentina Ly
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada
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A comparative proteomic analysis of Pinellia ternata leaves exposed to heat stress. Int J Mol Sci 2013; 14:20614-34. [PMID: 24132150 PMCID: PMC3821634 DOI: 10.3390/ijms141020614] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 09/22/2013] [Accepted: 09/29/2013] [Indexed: 01/08/2023] Open
Abstract
Pinellia ternata is an important traditional Chinese medicinal plant. The growth of P. ternata is sensitive to high temperatures. To gain a better understanding of heat stress responses in P. ternata, we performed a comparative proteomic analysis. P. ternata seedlings were subjected to a temperature of 38 °C and samples were collected 24 h after treatment. Increased relative ion leakage and lipid peroxidation suggested that oxidative stress was frequently generated in rice leaves exposed to high temperature. Two-dimensional electrophoresis (2-DE) was used to analyze heat-responsive proteins. More than 600 protein spots were reproducibly detected on each gel; of these spots, 20 were up-regulated, and 7 were down-regulated. A total of 24 proteins and protein species were successfully identified by MALDI-TOF/TOF MS. These proteins and protein species were found to be primarily small heat shock proteins (58%) as well as proteins involved in RNA processing (17%), photosynthesis (13%), chlorophyll biosynthetic processes (4%), protein degradation (4%) and defense (4%). Using 2-DE Western blot analysis, we confirmed the identities of the cytosolic class II small heat shock protein (sHSPs-CII) identified by MS. The expression levels of four different proteins [cytosolic class I small heat shock protein (sHSPs-CI), sHSPs-CII, mitochondrial small heat shock protein (sHSPs-MIT), glycine-rich RNA-binding protein (GRP)] were analyzed at the transcriptional level by quantitative real-time PCR. The mRNA levels of three sHSPs correlated with the corresponding protein levels. However, GRP was down-regulated at the beginning of heat stress but then increased substantially to reach a peak after 24 h of heat stress. Our study provides valuable new insight into the responses of P. ternata to heat stress.
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Peñuelas J, Sardans J, Estiarte M, Ogaya R, Carnicer J, Coll M, Barbeta A, Rivas-Ubach A, Llusià J, Garbulsky M, Filella I, Jump AS. Evidence of current impact of climate change on life: a walk from genes to the biosphere. GLOBAL CHANGE BIOLOGY 2013; 19:2303-38. [PMID: 23505157 DOI: 10.1111/gcb.12143] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 12/31/2012] [Accepted: 01/14/2013] [Indexed: 05/19/2023]
Abstract
We review the evidence of how organisms and populations are currently responding to climate change through phenotypic plasticity, genotypic evolution, changes in distribution and, in some cases, local extinction. Organisms alter their gene expression and metabolism to increase the concentrations of several antistress compounds and to change their physiology, phenology, growth and reproduction in response to climate change. Rapid adaptation and microevolution occur at the population level. Together with these phenotypic and genotypic adaptations, the movement of organisms and the turnover of populations can lead to migration toward habitats with better conditions unless hindered by barriers. Both migration and local extinction of populations have occurred. However, many unknowns for all these processes remain. The roles of phenotypic plasticity and genotypic evolution and their possible trade-offs and links with population structure warrant further research. The application of omic techniques to ecological studies will greatly favor this research. It remains poorly understood how climate change will result in asymmetrical responses of species and how it will interact with other increasing global impacts, such as N eutrophication, changes in environmental N : P ratios and species invasion, among many others. The biogeochemical and biophysical feedbacks on climate of all these changes in vegetation are also poorly understood. We here review the evidence of responses to climate change and discuss the perspectives for increasing our knowledge of the interactions between climate change and life.
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Affiliation(s)
- Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CEAB-CSIC-UAB, Cerdanyola del Vallès, Catalonia, Spain.
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Lim SD, Cho HY, Park YC, Ham DJ, Lee JK, Jang CS. The rice RING finger E3 ligase, OsHCI1, drives nuclear export of multiple substrate proteins and its heterogeneous overexpression enhances acquired thermotolerance. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:2899-914. [PMID: 23698632 PMCID: PMC3741691 DOI: 10.1093/jxb/ert143] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Thermotolerance is very important for plant survival when plants are subjected to lethally high temperature. However, thus far little is known about the functions of RING E3 ligase in response to heat shock in plants. This study found that one rice gene encoding the RING finger protein was specifically induced by heat and cold stress treatments but not by salinity or dehydration and named it OsHCI1 (Oryza sativa heat and cold induced 1). Subcellular localization results showed that OsHCI1 was mainly associated with the Golgi apparatus and moved rapidly and extensively along the cytoskeleton. In contrast, OsHCI1 may have accumulated in the nucleus under high temperatures. OsHCI1 physically interacted with nuclear substrate proteins including a basic helix-loop-helix transcription factor. Transient co-overexpression of OsHCI1 and each of three nuclear proteins showed that their fluorescent signals moved into the cytoplasm as punctuate formations. Heterogeneous overexpression of OsHCI1 in Arabidopsis highly increased survival rate through acquired thermotolerance. It is proposed that OsHCI1 mediates nuclear-cytoplasmic trafficking of nuclear substrate proteins via monoubiquitination and drives an inactivation device for the nuclear proteins under heat shock.
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Takahashi H, Iwakawa H, Ishibashi N, Kojima S, Matsumura Y, Prananingrum P, Iwasaki M, Takahashi A, Ikezaki M, Luo L, Kobayashi T, Machida Y, Machida C. Meta-analyses of microarrays of Arabidopsis asymmetric leaves1 (as1), as2 and their modifying mutants reveal a critical role for the ETT pathway in stabilization of adaxial-abaxial patterning and cell division during leaf development. PLANT & CELL PHYSIOLOGY 2013; 54:418-31. [PMID: 23396601 PMCID: PMC3589830 DOI: 10.1093/pcp/pct027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 02/01/2013] [Indexed: 05/22/2023]
Abstract
It is necessary to use algorithms to analyze gene expression data from DNA microarrays, such as in clustering and machine learning. Previously, we developed the knowledge-based fuzzy adaptive resonance theory (KB-FuzzyART), a clustering algorithm suitable for analyzing gene expression data, to find clues for identifying gene networks. Leaf primordia form around the shoot apical meristem (SAM), which consists of indeterminate stem cells. Upon initiation of leaf development, adaxial-abaxial patterning is crucial for lateral expansion, via cellular proliferation, and the formation of flat symmetric leaves. Many regulatory genes that specify such patterning have been identified. Analysis by the KB-FuzzyART and subsequent molecular and genetic analyses previously showed that ASYMMETRIC LEAVES1 (AS1) and AS2 repress the expression of some abaxial-determinant genes, such as AUXIN RESPONSE FACTOR3 (ARF3)/ETTIN (ETT) and ARF4, which are responsible for defects in leaf adaxial-abaxial polarity in as1 and as2. In the present study, genetic analysis revealed that ARF3/ETT and ARF4 were regulated by modifier genes, BOBBER1 (BOB1) and ELONGATA3 (ELO3), together with AS1-AS2. We analyzed expression arrays with as2 elo3 and as2 bob1, and extracted genes downstream of ARF3/ETT by using KB-FuzzyART and molecular analyses. The results showed that expression of Kip-related protein (KRP) (for inhibitors of cyclin-dependent protein kinases) and Isopentenyltransferase (IPT) (for biosynthesis of cytokinin) genes were controlled by AS1-AS2 through ARF3/ETT and ARF4 functions, which suggests that the AS1-AS2-ETT pathway plays a critical role in controlling the cell division cycle and the biosynthesis of cytokinin around SAM to stabilize leaf development in Arabidopsis thaliana.
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Affiliation(s)
- Hiro Takahashi
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo-shi, Chiba, 271-8510 Japan
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- Graduate School of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- These authors contributed equally to this work
| | - Hidekazu Iwakawa
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- These authors contributed equally to this work
- Present address: Department of Biological Sciences, Purdue University, West, Lafayette, IN 47907-1392, USA
| | - Nanako Ishibashi
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
- These authors contributed equally to this work
| | - Shoko Kojima
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- Graduate School of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
| | - Yoko Matsumura
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
| | - Pratiwi Prananingrum
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
| | - Mayumi Iwasaki
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- Present address: Department of Plant Biology, University of Geneva, CH-1211 Geneva 4, Switzerland
| | - Anna Takahashi
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
| | - Masaya Ikezaki
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
| | - Lilan Luo
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
| | - Takeshi Kobayashi
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- Graduate School of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
| | - Yasunori Machida
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan
- *Corresponding authors: Chiyoko Machida, Email, ; Fax, +81-568-51-6276; Yasunori Machida, Email, ; Fax, +81-52-789-2502
| | - Chiyoko Machida
- Plant Biology Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- Graduate School of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501 Japan
- *Corresponding authors: Chiyoko Machida, Email, ; Fax, +81-568-51-6276; Yasunori Machida, Email, ; Fax, +81-52-789-2502
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