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Niu B, Bai N, Liu X, Ma L, Dai L, Mu X, Wu S, Ma J, Hao X, Wang L, Li P. The role of GmHSP23.9 in regulating soybean nodulation under elevated CO 2 condition. Int J Biol Macromol 2024; 274:133436. [PMID: 38936572 DOI: 10.1016/j.ijbiomac.2024.133436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/28/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Legume-rhizobia symbiosis offers a unique approach to increase leguminous crop yields. Previous studies have indicated that the number of soybean nodules are increased under elevated CO2 concentration. However, the underlying mechanism behind this phenomenon remains elusive. In this study, transcriptome analysis was applied to identify candidate genes involved in regulating soybean nodulation mediated by elevated CO2 concentration. Among the different expression genes (DEGs), we identified a gene encoding small heat shock protein (sHSP) called GmHSP23.9, which mainly expressed in soybean roots and nodules, and its expression was significantly induced by rhizobium USDA110 infection at 14 days after inoculation (DAI) under elevated CO2 conditions. We further investigated the role of GmHSP23.9 by generating transgenic composite plants carrying GmHSP23.9 overexpression (GmHSP23.9-OE), RNA interference (GmHSP23.9-RNAi), and CRISPR-Cas9 (GmHSP23.9-KO), and these modifications resulted in notable changes in nodule number and the root hairs deformation and suggesting that GmHSP23.9 function as an important positive regulator in soybean. Moreover, we found that altering the expression of GmHSP23.9 influenced the expression of genes involved in the Nod factor signaling pathway and AON signaling pathway to modulate soybean nodulation. Interestingly, we found that knocking down of GmHSP23.9 prevented the increase in the nodule number of soybean in response to elevated CO2 concentration. This research has successfully identified a crucial regulator that influences soybean nodulation under elevated CO2 level and shedding new light on the role of sHSPs in legume nodulation.
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Affiliation(s)
- Bingjie Niu
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Nan Bai
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Xiaofeng Liu
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Longjing Ma
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Lijiao Dai
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Xiaoya Mu
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Shenjie Wu
- College of Life Sceinces, Shanxi Agricultural University, Taigu 030801, China
| | - Junkui Ma
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Xingyu Hao
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Lixiang Wang
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China.
| | - Ping Li
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China.
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Hua Y, Liu Q, Zhai Y, Zhao L, Zhu J, Zhang X, Jia Q, Liang Z, Wang D. Genome-wide analysis of the HSP20 gene family and its response to heat and drought stress in Coix (Coix lacryma-jobi L.). BMC Genomics 2023; 24:478. [PMID: 37612625 PMCID: PMC10464217 DOI: 10.1186/s12864-023-09580-2] [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: 03/16/2023] [Accepted: 08/12/2023] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Heat shock protein 20 (HSP20) is a member of the heat stress-related protein family, which plays critical roles in plant growth, development, and response to abiotic stresses. Although many HSP20 genes have been associated with heat stress in numerous types of plants, little is known about the details of the HSP20 gene family in Coix. To investigate the mechanisms of the ClHSP20 response to heat and drought stresses, the ClHSP20 gene family in Coix was identified and characterized based on genome-wide analysis. RESULTS A total of 32 putative ClHSP20 genes were identified and characterized in Coix. Phylogenetic analysis indicated that ClHSP20s were grouped into 11 subfamilies. The duplicated event analysis demonstrated that tandem duplication and segment duplication events played crucial roles in promoting the expansion of the ClHSP20 gene family. Synteny analysis showed that Coix shared the highest homology in 36 HSP20 gene pairs with wheat, followed by 22, 19, 15, and 15 homologous gene pairs with maize, sorghum, barley, and rice, respectively. The expression profile analysis showed that almost all ClHSP20 genes had different expression levels in at least one tissue. Furthermore, 22 of the 32 ClHSP20 genes responded to heat stress, with 11 ClHSP20 genes being significantly upregulated and 11 ClHSP20 genes being significantly downregulated. Furthermore, 13 of the 32 ClHSP20 genes responded to drought stress, with 6 ClHSP20 genes being significantly upregulated and 5 ClHSP20 genes being significantly downregulated. CONCLUSIONS Thirty-two ClHSP20 genes were identified and characterized in the genome of Coix. Tandem and segmental duplication were identified as having caused the expansion of the ClHSP20 gene family. The expression patterns of the ClHSP20 genes suggested that they play a critical role in growth, development, and response to heat and drought stress. The current study provides a theoretical basis for further research on ClHSP20s and will facilitate the functional characterization of ClHSP20 genes.
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Affiliation(s)
- Yangguang Hua
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
| | - Qiao Liu
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
| | - Yufeng Zhai
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
| | - Limin Zhao
- Jinyun County Agriculture and Rural Bureau, Jinhua, 321400, People's Republic of China
| | - Jinjian Zhu
- Jinyun County Agriculture and Rural Bureau, Jinhua, 321400, People's Republic of China
| | - Xiaodan Zhang
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
- State Key Laboratory of Dao-Di Herbs, 100700, Beijng, People's Republic of China
| | - Qiaojun Jia
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
| | - Zongsuo Liang
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China
- State Key Laboratory of Dao-Di Herbs, 100700, Beijng, People's Republic of China
| | - Dekai Wang
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, People's Republic of China.
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Zeng C, Jia T, Gu T, Su J, Hu X. Progress in Research on the Mechanisms Underlying Chloroplast-Involved Heat Tolerance in Plants. Genes (Basel) 2021; 12:genes12091343. [PMID: 34573325 PMCID: PMC8471720 DOI: 10.3390/genes12091343] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/18/2022] Open
Abstract
Global warming is a serious challenge plant production has to face. Heat stress not only affects plant growth and development but also reduces crop yield and quality. Studying the response mechanisms of plants to heat stress will help humans use these mechanisms to improve the heat tolerance of plants, thereby reducing the harm of global warming to plant production. Research on plant heat tolerance has gradually become a hotspot in plant molecular biology research in recent years. In view of the special role of chloroplasts in the response to heat stress in plants, this review is focusing on three perspectives related to chloroplasts and their function in the response of heat stress in plants: the role of chloroplasts in sensing high temperatures, the transmission of heat signals, and the improvement of heat tolerance in plants. We also present our views on the future direction of research on chloroplast related heat tolerance in plants.
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Affiliation(s)
- Chu Zeng
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (T.G.); (J.S.)
| | - Ting Jia
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China;
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Tongyu Gu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (T.G.); (J.S.)
| | - Jinling Su
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (T.G.); (J.S.)
| | - Xueyun Hu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (T.G.); (J.S.)
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China;
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
- Correspondence:
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He Y, Yao Y, Li L, Li Y, Gao J, Fan M. A heat-shock 20 protein isolated from watermelon (ClHSP22.8) negatively regulates the response of Arabidopsis to salt stress via multiple signaling pathways. PeerJ 2021; 9:e10524. [PMID: 33717662 PMCID: PMC7931717 DOI: 10.7717/peerj.10524] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/17/2020] [Indexed: 01/09/2023] Open
Abstract
Heat-shock protein 20s (HSP20) were initially shown to play a role during heat shock stress; however, recent data indicated that HSP20 proteins are also involved in abiotic stress in plants. Watermelon is known to be vulnerable to various stressors; however, HSP20 proteins have yet to be investigated and characterized in the watermelon. In a previous study, we identified a negative regulator of salt stress response from watermelon: ClHSP22.8, a member of the HSP20 family. Quantitative real-time PCR (qRT-PCR) and promoter::β-glucuronidase (GUS) analysis revealed that ClHSP22.8 was expressed widely in a range of different tissues from the watermelon, but particularly in the roots of 7-day-old seedlings and flowers. Furthermore, qRT-PCR and GUS staining showed that the expression of ClHSP22.8 was significantly repressed by exogenous abscisic acid (ABA) and salt stress. The over-expression of ClHSP22.8 in Arabidopsis lines resulted in hypersensitivity to ABA and reduced tolerance to salt stress. Furthermore, the expression patterns of key regulators associated with ABA-dependent and independent pathways, and other stress-responsive signaling pathways, were also repressed in transgenic lines that over-expressed ClHSP22.8. These results indicated that ClHSP22.8 is a negative regulator in plant response to salt stress and occurs via ABA-dependent and independent, and other stress-responsive signaling pathways.
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Affiliation(s)
- Yanjun He
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China
| | - Yixiu Yao
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Lili Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Yulin Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Jie Gao
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Min Fan
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou, Zhejiang, China
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5
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Molecular evolution and structural variations in nuclear encoded chloroplast localized heat shock protein 26 (sHSP26) from genetically diverse wheat species. Comput Biol Chem 2019; 83:107144. [PMID: 31751884 DOI: 10.1016/j.compbiolchem.2019.107144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 07/01/2019] [Accepted: 10/05/2019] [Indexed: 11/20/2022]
Abstract
Heat shock proteins are an important class of molecular chaperones known to impart tolerance under high temperature stress. sHSP26, a member of small heat shock protein subfamily is specifically involved in protecting plant's photosynthetic machinery. The present study aimed at identifying and characterizing sequence and structural variations in sHSP26 from genetically diverse progenitor and non-progenitor species of wheat. In silico analysis identified three paralogous copies of TaHSP26 to reside on short arm of chromosome 4A while one homeologue each was localized on long arm of chromosome 4B and 4D of cultivated bread wheat. Wild DD-genome donor Aegilops tauschii carried an additional sHSP26 gene (AET4Gv20569400) which was absent in the cultivated DD genome of bread wheat. In vitro amplification of this novel gene in wild accessions of Ae. tauschii and synthetic hexaploid wheat but not in cultivated bread wheat validated this finding. Further, significant length polymorphism could be identified in exon1 from diverse sHSP26 sequences. Multiple sequence alignment of procured sequences revealed numerous sSNPs and nsSNPs. D3A, P125 L, Q242 K were designated as homeolog specific- while A49 G as non-progenitor specific amino acid replacements. A 9-bp indel in TmHSP26-1(GA) translated into a deletion of SPM amino acid segment in chloroplast specific conserved consensus region III. High degree of divergence in nucleotide sequence between cultivated and wild species appeared in the form of higher ω values (Ka/Ks >1) indicating positive selection during the course of evolution. Phylogenetic analysis elucidated ancestral relationships between wheat sHSP26 proteins and orthologous proteins across plant kingdom. Overall, data mining approach may be employed as an effective pre-breeding strategy to identify and mobilize novel stress responsive genes and distinct allelic variants from wider germplasm collections of wheat to enhance climate resilience of present day elite wheat cultivars.
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Seneviratne M, Rajakaruna N, Rizwan M, Madawala HMSP, Ok YS, Vithanage M. Heavy metal-induced oxidative stress on seed germination and seedling development: a critical review. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1813-1831. [PMID: 28702790 DOI: 10.1007/s10653-017-0005-8] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 06/26/2017] [Indexed: 05/07/2023]
Abstract
Heavy metal contamination in soils can influence plants and animals, often leading to toxicosis. Heavy metals can impact various biochemical processes in plants, including enzyme and antioxidant production, protein mobilization and photosynthesis. Hydrolyzing enzymes play a major role in seed germination. Enzymes such as acid phosphatases, proteases and α-amylases are known to facilitate both seed germination and seedling growth via mobilizing nutrients in the endosperm. In the presence of heavy metals, starch is immobilized and nutrient sources become limited. Moreover, a reduction in proteolytic enzyme activity and an increase in protein and amino acid content can be observed under heavy metal stress. Proline, is an amino acid which is essential for cellular metabolism. Numerous studies have shown an increase in proline content under oxidative stress in higher plants. Furthermore, heat shock protein production has also been observed under heavy metal stress. The chloroplast small heat shock proteins (Hsp) reduce photosynthesis damage, rather than repair or help to recover from heavy metal-induced damage. Heavy metals are destructive substances for photosynthesis. They are involved in destabilizing enzymes, oxidizing photosystem II (PS II) and disrupting the electron transport chain and mineral metabolism. Although the physiological effects of Cd have been investigated thoroughly, other metals such as As, Cr, Hg, Cu and Pb have received relatively little attention. Among agricultural plants, rice has been studied extensively; additional studies are needed to characterize toxicities of different heavy metals on other crops. This review summarizes the current state of our understanding of the effects of heavy metal stress on seed germination and seedling development and highlights informational gaps and areas for future research.
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Affiliation(s)
- Mihiri Seneviratne
- Department of Botany, Faculty of Natural Sciences, Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka
| | - Nishanta Rajakaruna
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
- Biological Sciences Department, California Polytechnic State University, San Luis Obispo, CA, 93407, USA
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad, 38000, Pakistan
| | - H M S P Madawala
- Department of Botany, University of Peradeniya, Peradeniya, Sri Lanka
| | - Yong Sik Ok
- Korea Biochar Research Center & School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon, 24341, Korea.
| | - Meththika Vithanage
- Environmental Chemodynamics Project, National Institute of Fundamental Studies, Kandy, Sri Lanka.
- Office of the Dean, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
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7
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He Y, Fan M, Sun Y, Li L. Genome-Wide Analysis of Watermelon HSP20s and Their Expression Profiles and Subcellular Locations under Stresses. Int J Mol Sci 2018; 20:E12. [PMID: 30577505 PMCID: PMC6337729 DOI: 10.3390/ijms20010012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/10/2018] [Accepted: 12/18/2018] [Indexed: 12/01/2022] Open
Abstract
Watermelon (Citrullus lanatus L.), which is an economically important cucurbit crop that is cultivated worldwide, is vulnerable to various adverse environmental conditions. Small heat shock protein 20s (HSP20s) are the most abundant plant HSPs and they play important roles in various biotic and abiotic stress responses. However, they have not been systematically investigated in watermelon. In this study, we identified 44 watermelon HSP20 genes and analyzed their gene structures, conserved domains, phylogenetic relationships, chromosomal distributions, and expression profiles. All of the watermelon HSP20 proteins have a conserved the α-crystallin (ACD) domain. Half of the ClHSP20s arose through gene duplication events. Plant HSP20s were grouped into 18 subfamiles and a new subfamily, nucleo-cytoplasmic XIII (CXIII), was identified in this study. Numerous stress- and hormone-responsive cis-elements were detected in the putative promoter regions of the watermelon HSP20 genes. Different from that in other species, half of the watermelon HSP20s were repressed by heat stress. Plant HSP20s displayed diverse responses to different virus infections and most of the ClHSP20s were generally repressed by Cucumber green mottle mosaic virus (CGMMV). Some ClHSP20s exhibited similar transcriptional responses to abscisic acid, melatonin, and CGMMV. Subcellular localization analyses of six selected HSP20- green fluorescence protein fusion proteins revealed diverse subcellular targeting. Some ClHSP20 proteins were affected by CGMMV, as reflected by changes in the size, number, and distribution of fluorescent granules. These systematic analyses provide a foundation for elucidating the physiological functions and biological roles of the watermelon HSP20 gene family.
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Affiliation(s)
- Yanjun He
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Min Fan
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Yuyan Sun
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
| | - Lili Li
- Zhejiang Academy of Agricultural Sciences, Institute of Vegetables, Hangzhou 310021, China.
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King NG, Wilcockson DC, Webster R, Smale DA, Hoelters LS, Moore PJ. Cumulative stress restricts niche filling potential of habitat-forming kelps in a future climate. Funct Ecol 2017; 32:288-299. [PMID: 29576672 PMCID: PMC5856065 DOI: 10.1111/1365-2435.12977] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 08/17/2017] [Indexed: 11/29/2022]
Abstract
Climate change is driving range contractions and local population extinctions across the globe. When this affects ecosystem engineers the vacant niches left behind are likely to alter the wider ecosystem unless a similar species can fulfil them. Here, we explore the stress physiology of two coexisting kelps undergoing opposing range shifts in the Northeast Atlantic and discuss what differences in stress physiology may mean for future niche filling. We used chlorophyll florescence (Fv/Fm) and differentiation of the heat shock response (HSR) to determine the capacity of the expanding kelp, Laminaria ochroleuca, to move into the higher shore position of the retreating kelp, Laminaria digitata. We applied both single and consecutive exposures to immersed and emersed high and low temperature treatments, replicating low tide exposures experienced in summer and winter. No interspecific differences in HSR were observed which was surprising given the species’ different biogeographic distributions. However, chlorophyll florescence revealed clear differences between species with L. ochroleuca better equipped to tolerate high immersed temperatures but showed little capacity to tolerate frosts or high emersion temperatures. Many patterns observed were only apparent after consecutive exposures. Such cumulative effects have largely been overlooked in tolerance experiments on intertidal organisms despite being more representative of the stress experienced in natural habitats. We therefore suggest future experiments incorporate consecutive stress into their design. Climate change is predicted to result in fewer ground frosts and increased summer temperatures. Therefore, L. ochroleuca may be released from its summer cold limit in winter but still be prevented from moving up the shore due to desiccation in the summer. Laminaria ochroleuca will, however, likely be able to move into tidal pools. Therefore, only partial niche filling by L. ochroleuca will be possible in this system as climate change advances.
A plain language summary is available for this article.
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Affiliation(s)
- Nathan G King
- Institute of Biological, Environmental and Rural Sciences Aberystwyth University Aberystwyth UK
| | - David C Wilcockson
- Institute of Biological, Environmental and Rural Sciences Aberystwyth University Aberystwyth UK
| | - Richard Webster
- Institute of Biological, Environmental and Rural Sciences Aberystwyth University Aberystwyth UK
| | - Dan A Smale
- Marine Biological Association of the United Kingdom The Laboratory Plymouth UK
| | - Laura S Hoelters
- Institute of Biological, Environmental and Rural Sciences Aberystwyth University Aberystwyth UK
| | - Pippa J Moore
- Institute of Biological, Environmental and Rural Sciences Aberystwyth University Aberystwyth UK.,Centre for Marine Ecosystems Research School of Natural Sciences Edith Cowan University Joondalup WA Australia
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Muthusamy SK, Dalal M, Chinnusamy V, Bansal KC. Genome-wide identification and analysis of biotic and abiotic stress regulation of small heat shock protein (HSP20) family genes in bread wheat. JOURNAL OF PLANT PHYSIOLOGY 2017; 211:100-113. [PMID: 28178571 DOI: 10.1016/j.jplph.2017.01.004] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 01/16/2017] [Accepted: 01/16/2017] [Indexed: 05/23/2023]
Abstract
Small Heat Shock Proteins (sHSPs)/HSP20 are molecular chaperones that protect plants by preventing protein aggregation during abiotic stress conditions, especially heat stress. Due to global climate change, high temperature is emerging as a major threat to wheat productivity. Thus, the identification of HSP20 and analysis of HSP transcriptional regulation under different abiotic stresses in wheat would help in understanding the role of these proteins in abiotic stress tolerance. We used sequences of known rice and Arabidopsis HSP20 HMM profiles as queries against publicly available wheat genome and wheat full length cDNA databases (TriFLDB) to identify the respective orthologues from wheat. 163 TaHSP20 (including 109 sHSP and 54 ACD) genes were identified and classified according to the sub-cellular localization and phylogenetic relationship with sequenced grass genomes (Oryza sativa, Sorghum bicolor, Zea mays, Brachypodium distachyon and Setaria italica). Spatio-temporal, biotic and abiotic stress-specific expression patterns in normalized RNA seq and wheat array datasets revealed constitutive as well as inductive responses of HSP20 in different tissues and developmental stages of wheat. Promoter analysis of TaHSP20 genes showed the presence of tissue-specific, biotic, abiotic, light-responsive, circadian and cell cycle-responsive cis-regulatory elements. 14 TaHSP20 family genes were under the regulation of 8 TamiRNA genes. The expression levels of twelve HSP20 genes were studied under abiotic stress conditions in the drought- and heat-tolerant wheat genotype C306. Of the 13 TaHSP20 genes, TaHSP16.9H-CI showed high constitutive expression with upregulation only under salt stress. Both heat and salt stresses upregulated the expression of TaHSP17.4-CI, TaHSP17.7A-CI, TaHSP19.1-CIII, TaACD20.0B-CII and TaACD20.6C-CIV, while TaHSP23.7-MTI was specifically induced only under heat stress. Our results showed that the identified TaHSP20 genes play an important role under different abiotic stress conditions. Thus, the results illustrate the complexity of the TaHSP20 gene family and its stress regulation in wheat, and suggest that sHSPs as attractive breeding targets for improvement of the heat tolerance of wheat.
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Affiliation(s)
- Senthilkumar K Muthusamy
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, 110012, India; Division of Crop Improvement, ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001, India
| | - Monika Dalal
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, 110012, India
| | - Viswanathan Chinnusamy
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Kailash C Bansal
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, 110012, India.
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Coleman‐Derr D, Desgarennes D, Fonseca‐Garcia C, Gross S, Clingenpeel S, Woyke T, North G, Visel A, Partida‐Martinez LP, Tringe SG. Plant compartment and biogeography affect microbiome composition in cultivated and native Agave species. THE NEW PHYTOLOGIST 2016; 209:798-811. [PMID: 26467257 PMCID: PMC5057366 DOI: 10.1111/nph.13697] [Citation(s) in RCA: 378] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/31/2015] [Indexed: 05/18/2023]
Abstract
Desert plants are hypothesized to survive the environmental stress inherent to these regions in part thanks to symbioses with microorganisms, and yet these microbial species, the communities they form, and the forces that influence them are poorly understood. Here we report the first comprehensive investigation of the microbial communities associated with species of Agave, which are native to semiarid and arid regions of Central and North America and are emerging as biofuel feedstocks. We examined prokaryotic and fungal communities in the rhizosphere, phyllosphere, leaf and root endosphere, as well as proximal and distal soil samples from cultivated and native agaves, through Illumina amplicon sequencing. Phylogenetic profiling revealed that the composition of prokaryotic communities was primarily determined by the plant compartment, whereas the composition of fungal communities was mainly influenced by the biogeography of the host species. Cultivated A. tequilana exhibited lower levels of prokaryotic diversity compared with native agaves, although no differences in microbial diversity were found in the endosphere. Agaves shared core prokaryotic and fungal taxa known to promote plant growth and confer tolerance to abiotic stress, which suggests common principles underpinning Agave-microbe interactions.
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Affiliation(s)
- Devin Coleman‐Derr
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
- Plant Gene Expression CenterUSDA‐ARSAlbanyCA94710USA
| | - Damaris Desgarennes
- Departamento de Ingeniería GenéticaCentro de Investigación y de Estudios AvanzadosIrapuato36821Mexico
| | - Citlali Fonseca‐Garcia
- Departamento de Ingeniería GenéticaCentro de Investigación y de Estudios AvanzadosIrapuato36821Mexico
| | - Stephen Gross
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
| | - Scott Clingenpeel
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
| | - Tanja Woyke
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
| | - Gretchen North
- Department of BiologyOccidental CollegeLos AngelesCA90041USA
| | - Axel Visel
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
- School of Natural SciencesUniversity of CaliforniaMercedCA95343USA
| | - Laila P. Partida‐Martinez
- Departamento de Ingeniería GenéticaCentro de Investigación y de Estudios AvanzadosIrapuato36821Mexico
| | - Susannah G. Tringe
- Department of EnergyJoint Genome InstituteWalnut CreekCA94598USA
- Genomics DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
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11
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Jueterbock A, Kollias S, Smolina I, Fernandes JMO, Coyer JA, Olsen JL, Hoarau G. Thermal stress resistance of the brown alga Fucus serratus along the North-Atlantic coast: acclimatization potential to climate change. Mar Genomics 2014; 13:27-36. [PMID: 24393606 DOI: 10.1016/j.margen.2013.12.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 11/25/2013] [Accepted: 12/21/2013] [Indexed: 11/27/2022]
Abstract
Seaweed-dominated communities are predicted to disappear south of 45° latitude on North-Atlantic rocky shores by 2200 because of climate change. The extent of predicted habitat loss, however, could be mitigated if the seaweeds' physiology is sufficiently plastic to rapidly acclimatize to the warmer temperatures. The main objectives of this study were to identify whether the thermal tolerance of the canopy-forming seaweed Fucus serratus is population-specific and where temperatures are likely to exceed its tolerance limits in the next 200 years. We measured the stress response of seaweed samples from four populations (Norway, Denmark, Brittany and Spain) to common-garden heat stress (20 °C-36 °C) in both photosynthetic performance and transcriptomic upregulation of heat shock protein genes. The two stress indicators did not correlate and likely measured different cellular components of the stress response, but both indicators revealed population-specific differences, suggesting ecotypic differentiation. Our results confirmed that thermal extremes will regularly reach physiologically stressful levels in Brittany (France) and further south by the end of the 22nd century. Although heat stress resilience in photosynthetic performance was higher at the species' southern distributional edge in Spain, the hsp expression pattern suggested that this edge-population experienced reduced fitness and limited responsiveness to further stressors. Thus, F. serratus may be unable to mitigate its predicted northward shift and may be at high risk to lose its center of genetic diversity and adaptability in Brittany (France). As it is an important intertidal key species, the disappearance of this seaweed will likely trigger major ecological changes in the entire associated ecosystem.
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Affiliation(s)
- Alexander Jueterbock
- Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway.
| | - Spyros Kollias
- Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway
| | - Irina Smolina
- Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway
| | - Jorge M O Fernandes
- Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway
| | - James A Coyer
- Shoals Marine Laboratory, Cornell University, Portsmouth, NH 03801, USA
| | - Jeanine L Olsen
- Marine Benthic Ecology and Evolution Group, Centre for Ecological and Evolutionary Studies, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Galice Hoarau
- Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway
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