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Tavares WCM, Maretto V, Silveira V, Pinto VB, Bustamante-Filho IC, Quirino CR, Ortiz Vega WH, Caldas-Bussiere MC. Impact of the near-physiological temperature on the in vitro maturation of bovine oocytes: A comparative proteomic approach. Theriogenology 2024; 228:64-74. [PMID: 39098122 DOI: 10.1016/j.theriogenology.2024.07.026] [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: 05/30/2024] [Revised: 07/09/2024] [Accepted: 07/29/2024] [Indexed: 08/06/2024]
Abstract
In vivo, the temperature inside preovulatory follicles of cows is approximately 1 °C lower than rectal temperature. However, standard bovine oocyte in vitro maturation (IVM) protocols use 38.5 °C based on rectal temperature. This study evaluated the effect of reducing IVM temperature to 37.5 °C on the proteomic profile of oocytes compared to the routine 38.5 °C. Nuclear maturation rate and cumulus cell (CC) expansion (30 COCs per group, 21 replicates) were assessed by observing the first polar body and using a subjective scoring method (0-4). Total nitrite concentrations in the culture medium were measured using the Griess method. Differential proteomics was performed using LC-MS/MS on pooled oocyte samples (500 matured oocytes per group, three replicates), followed by gene ontology enrichment, protein-protein interaction, and putative miRNA target analyses. No significant differences were observed between the groups in nuclear maturation, CC expansion, or nitrite concentration (P > 0.05). A total of 806 proteins were identified, with 7 up-regulated and 12 down-regulated in the treatment group compared to the control. Additionally, 12 proteins were unique to the control group, and 8 were unique to the treatment group. IVM at 37.5 °C resulted in the upregulation of proteins involved in protein folding and GTP binding, and the downregulation of enzymes with oxidoreductase activity and proteins involved in cytoskeletal fiber formation. Furthermore, 43 bovine miRNAs potentially regulating these genes (DES, HMOX2, KRT75, FARSA, IDH2, CARHSP1) were identified. We conclude that IVM of bovine oocytes at 37.5 °C induces significant proteomic changes without impacting nuclear maturation, cumulus cell expansion, or nitrite concentration in the IVM medium.
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Affiliation(s)
- Winny Caldas Moreno Tavares
- Laboratory of Animal Reproduction and Breeding, State University of Norte Fluminense 'Darcy Ribeiro' (Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF), Avenida Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, RJ, 28013-602, Brazil
| | - Vinicius Maretto
- Laboratory of Animal Reproduction and Breeding, State University of Norte Fluminense 'Darcy Ribeiro' (Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF), Avenida Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, RJ, 28013-602, Brazil
| | - Vanildo Silveira
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ, 28013-602, Brazil; Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Vitor Batista Pinto
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ, 28013-602, Brazil; Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Ivan Cunha Bustamante-Filho
- Laboratório de Biotecnologia da Reprodução Animal, Universidade do Vale do Taquari - Univates, Rua Avelino Tallini, 171, Lajeado, RS, 95914-014, Brazil
| | - Celia Raquel Quirino
- Laboratory of Animal Reproduction and Breeding, State University of Norte Fluminense 'Darcy Ribeiro' (Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF), Avenida Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, RJ, 28013-602, Brazil
| | - Wilder Hernando Ortiz Vega
- Laboratory of Animal Reproduction and Breeding, State University of Norte Fluminense 'Darcy Ribeiro' (Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF), Avenida Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, RJ, 28013-602, Brazil
| | - Maria Clara Caldas-Bussiere
- Laboratory of Animal Reproduction and Breeding, State University of Norte Fluminense 'Darcy Ribeiro' (Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF), Avenida Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, RJ, 28013-602, Brazil.
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Chen J, Gao G, Liu X. The characteristics of PtHSP40 gene family in Phaeodactylum tricornutum and its response to environmental stresses. MARINE ENVIRONMENTAL RESEARCH 2024; 199:106625. [PMID: 38959781 DOI: 10.1016/j.marenvres.2024.106625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 06/13/2024] [Accepted: 06/25/2024] [Indexed: 07/05/2024]
Abstract
Diatom has evolved response mechanisms to cope with multiple environmental stresses. Heat shock protein 40 (HSP40) plays a key role in these response mechanisms. HSP40 gene family in higher plants has been well-studied. However, the HSP40 gene family has not been systematically investigated in marine diatom. In this study, the bioinformatic characteristics, phylogenetic relationship, conserved motifs, gene structure, chromosome distribution and the transcriptional response of PtHSP40 to different environmental stresses were analyzed in the diatom Phaeodactylum tricornutum, and quantitative real-time PCR was conducted. Totally, 55 putative PtHSP40 genes are distributed to 21 chromosomes. All PtHSP40 proteins can be divided into four groups based on their evolutionary relationship, and 54 of them contain a conserved HPD (histidine-proline-aspartic acid tripeptide) motif. Additionally, six, eleven, ten and four PtHSP40 genes were significantly upregulated under the treatments of nitrogen starvation, phosphorus deprivation, 2,2',4,4'-tetrabrominated biphenyl ether (BDE-47) and ocean acidification, respectively. More interestingly, the expression level of 9 PtHSP40 genes was obviously upregulated in response to nickel stress, suggesting the sensitive to metal stress. The different expression models of PtHSP40 genes to environmental stresses imply the specificity of PtHSP40 proteins under different stresses. This study provides a systematic understanding of the PtHSP40 gene family in P. tricornutum and a comprehensive cognition in its functions and response mechanisms to environmental stresses.
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Affiliation(s)
- Jichen Chen
- Guangdong Provincial Key Laboratory of Marine Biotechnology and Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, College of Sciences, Shantou University, Shantou, 515063, Guangdong, China; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361005, China
| | - Guang Gao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361005, China.
| | - Xiaojuan Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology and Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, College of Sciences, Shantou University, Shantou, 515063, Guangdong, China.
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Yang W, Gao S, Bao M, Li X, Liu Z, Wang G. HSP70A promotes the photosynthetic activity of marine diatom Phaeodactylum tricornutum under high temperature. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:2085-2093. [PMID: 38525917 DOI: 10.1111/tpj.16730] [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: 09/26/2023] [Revised: 01/29/2024] [Accepted: 03/05/2024] [Indexed: 03/26/2024]
Abstract
With global climate change, the high-temperature environment has severely impacted the community structure and phenotype of marine diatoms. Phaeodactylum tricornutum, a model species of marine diatom, is sensitive to high temperature, which grow slowly under high temperature. However, the regulatory mechanism of P. tricornutum in response to high-temperature is still unclear. In this study, we found that the expression level of the HSP70A in the wild type (WT) increased 28 times when exposed to high temperature (26°C) for 1 h, indicating that HSP70A plays a role in high temperature in P. tricornutum. Furthermore, overexpression and interference of HSP70A have great impact on the exponential growth phase of P. tricornutum under 26°C. Moreover, the results of Co-immunoprecipitation (Co-IP) suggested that HSP70A potentially involved in the correct folding of the photosynthetic system-related proteins (D1/D2), preventing aggregation. The photosynthetic activity results demonstrated that overexpression of HSP70A improves non-photochemical quenching (NPQ) activity under high-temperature stress. These results reveal that HSP70A regulates the photosynthetic activity of P. tricornutum under high temperatures. This study not only helps us to understand the photosynthetic activity of marine diatoms to high temperature but also provides a molecular mechanism for HSP70A in P. tricornutum under high-temperature stress.
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Affiliation(s)
- Wenting Yang
- School of Marine Biology and Fisheries, Hainan University, Haikou, Hainan, China
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
| | - Shan Gao
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Mengjiao Bao
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- College of Life Science, Qingdao Agricultural University, Qingdao, China
| | - Xin Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
- College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zhiyuan Liu
- School of Marine Biology and Fisheries, Hainan University, Haikou, Hainan, China
| | - Guangce Wang
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
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Shin SE, Koh HG, Park K, Park SH, Chang YK, Kang NK. Increasing lipid production in Chlamydomonas reinhardtii through genetic introduction for the overexpression of glyceraldehyde-3-phosphate dehydrogenase. Front Bioeng Biotechnol 2024; 12:1396127. [PMID: 38707501 PMCID: PMC11066295 DOI: 10.3389/fbioe.2024.1396127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/05/2024] [Indexed: 05/07/2024] Open
Abstract
Microalgae, valued for their sustainability and CO2 fixation capabilities, are emerging as promising sources of biofuels and high-value compounds. This study aimed to boost lipid production in C. reinhardtii by overexpressing chloroplast glyceraldehyde-3-phosphate dehydrogenase (GAPDH), a key enzyme in the Calvin cycle and glycolysis, under the control of a nitrogen-inducible NIT1 promoter, to positively impact overall carbon metabolism. The standout transformant, PNG#7, exhibited significantly increased lipid production under nitrogen starvation, with biomass rising by 44% and 76% on days 4 and 16, respectively. Fatty acid methyl ester (FAME) content in PNG#7 surged by 2.4-fold and 2.1-fold, notably surpassing the wild type (WT) in lipid productivity by 3.4 and 3.7 times on days 4 and 16, respectively. Transcriptome analysis revealed a tenfold increase in transgenic GAPDH expression and significant upregulation of genes involved in fatty acid and triacylglycerol synthesis, especially the gene encoding acyl-carrier protein gene (ACP, Cre13. g577100. t1.2). In contrast, genes related to cellulose synthesis were downregulated. Single Nucleotide Polymorphism (SNP)/Indel analysis indicated substantial DNA modifications, which likely contributed to the observed extensive transcriptomic and phenotypic changes. These findings suggest that overexpressing chloroplast GAPDH, coupled with genetic modifications, effectively enhances lipid synthesis in C. reinhardtii. This study not only underscores the potential of chloroplast GAPDH overexpression in microalgal lipid synthesis but also highlights the expansive potential of metabolic engineering in microalgae for biofuel production.
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Affiliation(s)
- Sung-Eun Shin
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Hyun Gi Koh
- Department of Biological and Chemical Engineering, Hongik University, Sejong, Republic of Korea
| | - Kyungmoon Park
- Department of Biological and Chemical Engineering, Hongik University, Sejong, Republic of Korea
| | - See-Hyoung Park
- Department of Biological and Chemical Engineering, Hongik University, Sejong, Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Nam Kyu Kang
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin, Republic of Korea
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Xu S, Cao J, Wu M, Xu Y, Wu Y, Shang K, Ma B, Zhang L, Chen D, Liu X, Yan X, Xu J. Enhancing the Thermotolerance of Isochrysis zhangjiangensis Through Co-culturing With Algoriphagus marincola. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2023:10.1007/s10126-023-10219-2. [PMID: 37289264 DOI: 10.1007/s10126-023-10219-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/24/2023] [Indexed: 06/09/2023]
Abstract
Isochrysis zhangjiangensis is an important microalgal species used as bait in aquaculture. However, its optimal cultivation temperature is around 25 °C, limiting its use in summer when temperature is higher. To overcome this limitation, we aimed to develop a consortia of I. zhangjiangensis and bacteria that are more resistant to heat stress. Here, six thermotolerance-promoting bacterial strains were isolated from the culture of a heat-tolerant mutant strain of I. zhangjiangensis (IM), and identified as Algoriphagus marincola, Nocardioides sp., Pseudidiomarina sp., Labrenzia alba, Nitratireductor sp., and Staphylococcus haemolyticus. Further, co-culturing I. zhangjiangensis with A. marincola under high temperature conditions increased cell density, chlorophyll a, PSII maximum photochemical efficiency (Fv/Fm), and soluble protein content of microalgae. The presence of A. marincola positively influenced the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and total antioxidant capacity (T-AOC) in I. zhangjiangensis cells, while concurrently reducing the levels of reactive oxygen species (ROS). Additionally, gene expression studies confirmed that co-culturing with A. marincola upregulated the expression of antioxidant-related genes (sod and pod) and stress tolerance genes (heat shock protein genes). Our findings indicate that A. marincola effectively helps I. zhangjiangensis withstand high temperature stress, leading to improved yield of microalgae during high temperature conditions. The thermotolerance-promoting bacteria can be exploited as potential inoculants for enhancing the productivity and sustainability of bait microalgae in aquaculture.
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Affiliation(s)
- Simin Xu
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
| | - Jiayi Cao
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China.
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore.
| | - Minnan Wu
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
| | - Yijun Xu
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
| | - Yuanyuan Wu
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
- Laizhou Bay Marine Technology Co., Ltd, Yantai, 261400, Shandong, China
| | - Kaixi Shang
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
| | - Bin Ma
- Laizhou Bay Marine Technology Co., Ltd, Yantai, 261400, Shandong, China
| | - Lin Zhang
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China
| | - Deshui Chen
- Fujian Dalai Seed Science and Technology Co., Ltd, Ningde, 352101, Fujian, China
| | - Xinyu Liu
- Laizhou Bay Marine Technology Co., Ltd, Yantai, 261400, Shandong, China
| | - Xiaojun Yan
- Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Jilin Xu
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315832, Zhejiang, China.
- Fujian Dalai Seed Science and Technology Co., Ltd, Ningde, 352101, Fujian, China.
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Li C, Ma M, Zhang T, Feng P, Chen X, Liu Y, Brestic M, Galal TM, Al-Yasi HM, Yang X. Comparison of photosynthetic activity and heat tolerance between near isogenic lines of wheat with different photosynthetic rates. PLoS One 2021; 16:e0255896. [PMID: 34898627 PMCID: PMC8668138 DOI: 10.1371/journal.pone.0255896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 07/26/2021] [Indexed: 12/03/2022] Open
Abstract
Wheat (Triticum aestivum L.) is one of the most important crops in the world, but the yield and quality of wheat are highly susceptible to heat stress, especially during the grain-filling stage. Therefore, it is crucial to select high-yield and high-temperature-resistant varieties for food cultivation. There is a positive correlation between the yield and photosynthetic rate of wheat during the entire grain-filling stage, but few studies have shown that lines with high photosynthetic rates can maintain higher thermotolerance at the same time. In this study, two pairs of wheat near isogenic lines (NILs) with different photosynthetic rates were used for all experiments. Our results indicated that under heat stress, lines with a high photosynthetic rate could maintain the activities of photosystem II (PSII) and key Calvin cycle enzymes in addition to their higher photosynthetic rates. The protein levels of D1 and HSP70 were significantly increased in the highly photosynthetic lines, which contributed to maintaining high photosynthetic rates and ensuring the stability of the Calvin cycle under heat stress. Furthermore, we found that lines with a high photosynthetic rate could maintain high antioxidant enzyme activity to scavenge reactive oxygen species (ROS) and reduce ROS accumulation better than lines with a low photosynthetic rate under high-temperature stress. These findings suggest that lines with high photosynthetic rates can maintain a higher photosynthetic rate despite heat stress and are more thermotolerant than lines with low photosynthetic rates.
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Affiliation(s)
- Chongyang Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Mingyang Ma
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Tianpeng Zhang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Pengwen Feng
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Xiao Chen
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Yang Liu
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovak Republic
| | - Tarek M. Galal
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Hatim M. Al-Yasi
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Xinghong Yang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- * E-mail: ,
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Genome-Wide Identification and Characterization of Hsf and Hsp Gene Families and Gene Expression Analysis under Heat Stress in Eggplant (Solanum melongema L.). HORTICULTURAE 2021. [DOI: 10.3390/horticulturae7060149] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Under high temperature stress, a large number of proteins in plant cells will be denatured and inactivated. Meanwhile Hsfs and Hsps will be quickly induced to remove denatured proteins, so as to avoid programmed cell death, thus enhancing the thermotolerance of plants. Here, a comprehensive identification and analysis of the Hsf and Hsp gene families in eggplant under heat stress was performed. A total of 24 Hsf-like genes and 117 Hsp-like genes were identified from the eggplant genome using the interolog from Arabidopsis. The gene structure and motif composition of Hsf and Hsp genes were relatively conserved in each subfamily in eggplant. RNA-seq data and qRT-PCR analysis showed that the expressions of most eggplant Hsf and Hsp genes were increased upon exposure to heat stress, especially in thermotolerant line. The comprehensive analysis indicated that different sets of SmHsps genes were involved downstream of particular SmHsfs genes. These results provided a basis for revealing the roles of SmHsps and SmHsp for thermotolerance in eggplant, which may potentially be useful for understanding the thermotolerance mechanism involving SmHsps and SmHsp in eggplant.
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Zhang T, Li Z, Li D, Li C, Wei D, Li S, Liu Y, Chen THH, Yang X. Comparative effects of glycinebetaine on the thermotolerance in codA- and BADH-transgenic tomato plants under high temperature stress. PLANT CELL REPORTS 2020; 39:1525-1538. [PMID: 32860517 DOI: 10.1007/s00299-020-02581-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 08/17/2020] [Indexed: 05/02/2023]
Abstract
We propose that codA tomato plants exhibited higher degrees of enhanced thermotolerance than BADH tomato plants, and H2O2 as a signaling molecule also plays an important role in heat resistance. Betaine aldehyde dehydrogenase (BADH) and choline oxidase (COD) are key enzymes in glycinebetaine (GB) synthesis. In this study, two kinds of transgenic tomato plants, which were transformed with BADH gene and codA gene, respectively, were used to explore their thermotolerance. Our results showed that the levels of GB in leaves of the fourteen independent transgenic lines ranged from 1.9 μmol g-1 fresh weight to 3.4 μmol g-1 fresh weight, while GB was almost undetectable in leaves of WT plants. CO2 assimilation and photosystem II (PSII) photochemical activity in transgenic plants were more thermotolerant than WT plants, especially the codA-transgenic plants showed the most. Significant accumulation of hydrogen peroxide (H2O2), superoxide anion radical (O2·-), and malondialdehyde (MDA) were more in WT plants than transgenic plants, while this accumulation in codA-transgenic plant was the least. Furthermore, the expression of the heat response genes and the accumulation of heat shock protein 70 (HSP70) were found to be more in transgenic plants than that in WT plants during heat stress, as well as showing the most expression and accumulation of HSP70 in the codA-transgenic plants. Taken together, our results suggest that the enhanced thermotolerance in transgenic plants is due to the positive role of GB in response to heat stress. And interestingly, in addition to the major role of GB in codA-transgenic plants, H2O2 as a signaling molecule may also play an important role in heat resistance, leading to higher thermotolerance compared to BADH-transgenic plants.
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Affiliation(s)
- Tianpeng Zhang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Zhimei Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Daxing Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Chongyang Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Dandan Wei
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
- Xinzhou Teachers University, Xinzhou, 034000, Shanxi, China
| | - Shufen Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Yang Liu
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Tony H H Chen
- Department of Horticulture, Oregon State University, ALS 4017, Corvallis, OR, 97331, USA
| | - Xinghong Yang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China.
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Im SH, Klochkova TA, Lee DJ, Gachon CMM, Kim GH. Genetic toolkits of the red alga Pyropia tenera against the three most common diseases in Pyropia farms. JOURNAL OF PHYCOLOGY 2019; 55:801-815. [PMID: 30897208 DOI: 10.1111/jpy.12857] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Disease outbreaks devastate Pyropia aquaculture farms every year. The three most common and serious diseases are Olpidiopsis-blight and red-rot disease caused by oomycete pathogens and green-spot disease caused by the PyroV1 virus. We hypothesized that a basic genetic profile of molecular defenses will be revealed by comparing and analyzing the genetic response of Pyropia tenera against the above three pathogens. RNAs isolated from infected thalli were hybridized onto an oligochip containing 15,115 primers designed from P. tenera expressed sequence tags (EST)s. Microarray profiles of the three diseases were compared and interpreted together with histochemical observation. Massive amounts of reactive oxygen species accumulated in P. tenera cells exposed to oomycete pathogens. Heat shock genes and serine proteases were the most highly up-regulated genes in all infection experiments. Genes involved in RNA metabolism, ribosomal proteins and antioxidant metabolism were also highly up-regulated. Genetic profiles of P. tenera in response to pathogens were most similar between the two biotrophic pathogens, Olpidiopsis pyropiae and PyroV1 virus. A group of plant resistance genes were specifically regulated against each pathogen. Our results suggested that disease response in P. tenera consists of a general constitutive defense and a genetic toolkit against specific pathogens.
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Affiliation(s)
- Soo Hyun Im
- Department of Biology, Kongju National University, Kongju, 32588, Republic of Korea
| | - Tatyana A Klochkova
- Department of Biology, Kongju National University, Kongju, 32588, Republic of Korea
| | - Da Jeoung Lee
- Department of Biology, Kongju National University, Kongju, 32588, Republic of Korea
| | - Claire M M Gachon
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, PA37 1QA, UK
| | - Gwang Hoon Kim
- Department of Biology, Kongju National University, Kongju, 32588, Republic of Korea
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Zhao D, Xia X, Su J, Wei M, Wu Y, Tao J. Overexpression of herbaceous peony HSP70 confers high temperature tolerance. BMC Genomics 2019; 20:70. [PMID: 30665351 PMCID: PMC6341652 DOI: 10.1186/s12864-019-5448-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/11/2019] [Indexed: 11/30/2022] Open
Abstract
Background Heat shock proteins (HSPs) are found extensively in Eukaryotes and are involved in stress tolerance. However, their functions in herbaceous peony (Paeonia lactiflora Pall.) under high temperature stress are poorly characterized. Results In this study, the genomic sequence of P. lactiflora HSP70, designated PlHSP70, was isolated. Its full-length was 3635 bp, and it contained a large 1440-bp intron. The encoded protein with a molecular weight of 71 kDa was localized in the cytoplasm of the cell. PlHSP70 transcription was detected in P. lactiflora and increased with the treatment of high temperature stress. The constitutive overexpression of PlHSP70 in Arabidopsis thaliana obviously conferred tolerance to high temperature stress by affecting different physiological and biochemical indices. Transgenic A. thaliana plants exhibited higher chlorophyll fluorescence values than the wild-type (WT) when exposed to high temperature stress. The accumulation of hydrogen peroxide (H2O2), superoxide anion free radical (O2·-) and relative electric conductivity (REC) were significantly lower in the transgenic A. thaliana plants compared to the WT. In addition, more intact cell membranes, chloroplasts and starch grains, and fewer plastoglobuli were found in the PlHSP70-overexpressing transgenic lines than in the WT. Conclusions All of these results indicated that PlHSP70 possessed the ability to improve the tolerance to high temperature in transgenic A. thaliana, which could provide a theoretical basis to improve high temperature tolerance of P. lactiflora by future genetic manipulation. Electronic supplementary material The online version of this article (10.1186/s12864-019-5448-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daqiu Zhao
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Xing Xia
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Jianghong Su
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Mengran Wei
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Yanqing Wu
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Jun Tao
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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11
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Uji T, Gondaira Y, Fukuda S, Mizuta H, Saga N. Characterization and expression profiles of small heat shock proteins in the marine red alga Pyropia yezoensis. Cell Stress Chaperones 2019; 24:223-233. [PMID: 30632066 PMCID: PMC6363611 DOI: 10.1007/s12192-018-00959-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/20/2018] [Accepted: 12/03/2018] [Indexed: 12/14/2022] Open
Abstract
Small heat shock proteins (sHSPs) are found in all three domains of life (Bacteria, Archaea, and Eukarya) and play a critical role in protecting organisms from a range of environmental stresses. However, little is known about their physiological functions in red algae. Therefore, we characterized the sHSPs (PysHSPs) in the red macroalga Pyropia yezoensis, which inhabits the upper intertidal zone where it experiences fluctuating stressful environmental conditions on a daily and seasonal basis, and examined their expression profiles at different developmental stages and under varying environmental conditions. We identified five PysHSPs (PysHSP18.8, 19.1, 19.2, 19.5, and 25.8). Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis showed that expression of the genes PysHSP18.8, PysHSP19.5, and PysHSP25.8 was repressed at all the developmental stages under normal conditions, whereas PysHSP19.1 and PysHSP19.2 were overexpressed in mature gametophytes and sporophytes. Exposure of the gametophytes to high temperature, oxidative stress, or copper significantly increased the mRNA transcript levels of all the five genes, while exogenous application of the ethylene precursor 1-aminocylopropane-1-carboxylic acid (ACC) significantly increased the expression levels of PysHSP19.2, PysHSP19.5, and PysHSP25.8. These findings will help to further our understanding of the role of PysHSP genes and provide clues about how Pyropia species can adapt to the stressful conditions encountered in the upper intertidal zone during their life cycle.
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Affiliation(s)
- Toshiki Uji
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan.
| | - Yohei Gondaira
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan
| | - Satoru Fukuda
- Section of Food Sciences, Institute for Regional Innovation, Hirosaki University, Aomori, Aomori, 038-0012, Japan
| | - Hiroyuki Mizuta
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan
| | - Naotsune Saga
- Section of Food Sciences, Institute for Regional Innovation, Hirosaki University, Aomori, Aomori, 038-0012, Japan
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12
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Zhu X, Wang Y, Liu Y, Zhou W, Yan B, Yang J, Shen Y. Overexpression of BcHsfA1 transcription factor from Brassica campestris improved heat tolerance of transgenic tobacco. PLoS One 2018; 13:e0207277. [PMID: 30427910 PMCID: PMC6235349 DOI: 10.1371/journal.pone.0207277] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 10/29/2018] [Indexed: 01/31/2023] Open
Abstract
Heat shock proteins (HSPs) are a type of conserved molecular chaperone. They exist extensively in plants and greatly contribute to their survival under heat stress. The transcriptional regulation factor heat shock factor (HSF) is thought to regulate the expression of Hsps. In this study, a novel gene designated BcHsfA1 was cloned and characterized from Brassica campestris. Bioinformatic analysis implied that BcHsfA1 belongs to the HsfA gene family and is most closely related to HsfA1 from other plants. Constitutive overexpression of BcHsfA1 significantly improved heat tolerance of tobacco seedlings by affecting physiological and biochemical processes. Moreover, the chlorophyll content of transgenic tobacco plants was significantly increased compared with wild type after heat stress, as were the activities of the important enzymatic antioxidants superoxide dismutase and peroxidase. BcHsfA1 overexpression also resulted in decreased malondialdehyde content and comparative electrical conductivity and increased soluble sugar content in transgenic tobacco plants than wild-type plants exposed to heat stress. Furthermore, we identified 11 candidate heat response genes that were significantly up-regulated in the transgenic lines exposed to heat stress. Together, these results suggested that BcHsfA1 is effective in improving heat tolerance of tobacco seedlings, which may be useful in the development of new heat-resisitant B. campestris strains by genetic engineering.
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Affiliation(s)
- Xiangtao Zhu
- College of Jiyang, Zhejiang A&F University, Zhuji,China
| | - Yang Wang
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Yunhui Liu
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Wei Zhou
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
| | - Bin Yan
- Laboratory of Plant Biotechnology, College of Life and Environment Sciences, Shanghai Normal University, Shanghai,China
| | - Jian Yang
- Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Yafang Shen
- School of Agriculture and Food Science, Key Laboratory of Agricultural Products Quality Improvement Technology in Zhejiang Province, Zhejiang A&F University, Hangzhou, China
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13
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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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14
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Im S, Lee HN, Jung HS, Yang S, Park EJ, Hwang MS, Jeong WJ, Choi DW. Transcriptome-Based Identification of the Desiccation Response Genes in Marine Red Algae Pyropia tenera (Rhodophyta) and Enhancement of Abiotic Stress Tolerance by PtDRG2 in Chlamydomonas. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2017; 19:232-245. [PMID: 28421378 DOI: 10.1007/s10126-017-9744-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 03/06/2017] [Indexed: 06/07/2023]
Abstract
Pyropia tenera (Kjellman) are marine red algae that grow in the intertidal zone and lose more than 90% of water during hibernal low tides every day. In order to identify the desiccation response gene (DRG) in P. tenera, we generated 1,444,210 transcriptome sequences using the 454-FLX platform from the gametophyte under control and desiccation conditions. De novo assembly of the transcriptome reads generated 13,170 contigs, covering about 12 Mbp. We selected 1160 differentially expressed genes (DEGs) in response to desiccation stress based on reads per kilobase per million reads (RPKM) expression values. As shown in green higher plants, DEGs under desiccation are composed of two groups of genes for gene regulation networks and functional proteins for carbohydrate metabolism, membrane perturbation, compatible solutes, and specific proteins similar to higher plants. DEGs that show no significant homology with known sequences in public databases were selected as DRGs in P. tenera. PtDRG2 encodes a novel polypeptide of 159 amino acid residues locating chloroplast. When PtDRG2 was overexpressed in Chlamydomonas, the PtDRG2 confer mannitol and salt tolerance in transgenic cells. These results suggest that Pyropia may possess novel genes that differ from green plants, although the desiccation tolerance mechanism in red algae is similar to those of higher green plants. These transcriptome sequences will facilitate future studies to understand the common processes and novel mechanisms involved in desiccation stress tolerance in red algae.
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Affiliation(s)
- Sungoh Im
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Ha-Nul Lee
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Hyun Shin Jung
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Sunghwan Yang
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Eun-Jeong Park
- Seaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 58746, South Korea
| | - Mi Sook Hwang
- Seaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 58746, South Korea
| | - Won-Joong Jeong
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Dong-Woog Choi
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea.
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15
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Wang X, Yan B, Shi M, Zhou W, Zekria D, Wang H, Kai G. Overexpression of a Brassica campestris HSP70 in tobacco confers enhanced tolerance to heat stress. PROTOPLASMA 2016; 253:637-645. [PMID: 26298102 DOI: 10.1007/s00709-015-0867-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/29/2015] [Indexed: 05/23/2023]
Abstract
Heat shock proteins (HSPs) exist extensively in eukaryotes and are conserved molecular chaperones with important contribution to plant's survival under environmental stresses. Here, the cloning and characterization of one complementary DNA (cDNA) designated as BcHSP70 from young seedlings of Brassica campestris were reported in the present work. Bioinformatic analysis revealed that BcHSP70 belongs to the plant HSP gene family and had the closest relationship with HSP70-4 from Arabidopsis thaliana. Constitutive overexpression of BcHSP70 in tobacco obviously conferred tolerance to heat stress by affecting different plant physiological parameters. In our study, transgenic tobaccos exhibited higher chlorophyll content than wild-type control when exposed to heat stress. Superoxide dismutase (SOD) and peroxidase (POD) activities, which were helpful to decrease the damage to the membrane system, were significantly higher in transformants compared to wild-type lines. Meanwhile, lower comparative electrical conductivity and malondialdehyde (MDA) content and higher proline and soluble sugar accumulation were found in transgenic tobaccos than in wild-type lines. All these above results indicated that this isolated BcHSP70 cDNA owned the ability to improve the tolerance to heat stress in transgenic tobacco, which provides helpful information and good basement to culture new robust B. campestris variety resistant to high-temperature stress by molecular breeding in the future.
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Affiliation(s)
- Xiaorong Wang
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310018, People's Republic of China
- Institute of Plant Biotechnology, Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China
| | - Bin Yan
- Institute of Plant Biotechnology, Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China
| | - Min Shi
- Institute of Plant Biotechnology, Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China
| | - Wei Zhou
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310018, People's Republic of China
| | - David Zekria
- Institute of Plant Biotechnology, Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China
| | - Huizhong Wang
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310018, People's Republic of China
| | - Guoyin Kai
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310018, People's Republic of China.
- Institute of Plant Biotechnology, Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China.
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16
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Valenzuela-Castillo A, Sánchez-Paz A, Castro-Longoria R, López-Torres MA, Grijalva-Chon JM. Seasonal changes in gene expression and polymorphism of hsp70 in cultivated oysters (Crassostrea gigas) at extreme temperatures. MARINE ENVIRONMENTAL RESEARCH 2015; 110:25-32. [PMID: 26254584 DOI: 10.1016/j.marenvres.2015.07.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/30/2015] [Accepted: 07/30/2015] [Indexed: 06/04/2023]
Abstract
The HSP70 proteins are an important element of the response against thermal stress and infectious diseases, and they are highly conserved and ubiquitous. In some species, variations on the hsp70 encoding sequence resulted in intraspecific differential expression, which leads to variations on thermo-tolerance among individuals. This phenomenon has not been described in the Pacific oyster Crassostrea gigas, which is cultivated in Mexico under temperature conditions highly above the optimal for this species. The present study was aimed to identify associations between hsp70 genotypes and their expression levels in C. gigas. By analyzing a 603 bp fragment from the 3' end of the hsp70 gene, 21 different genotypes with 60 nucleotide polymorphic sites were detected, of which 34 sites were found in heterozygous condition. Although no correlation was found between genotype-expression-season, a minimum expression threshold that should be taken into account as an important feature for a future breeding program is proposed.
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Affiliation(s)
- Adán Valenzuela-Castillo
- Universidad de Sonora, Departamento de Investigaciones Científicas y Tecnológicas, Hermosillo, Sonora 83000, Mexico
| | - Arturo Sánchez-Paz
- Centro de Investigaciones Biológicas del Noroeste S.C. Laboratorio de Referencia, Análisis y Diagnóstico en Sanidad Acuícola, Hermosillo, Sonora 83106, Mexico
| | - Reina Castro-Longoria
- Universidad de Sonora, Departamento de Investigaciones Científicas y Tecnológicas, Hermosillo, Sonora 83000, Mexico
| | - Marco Antonio López-Torres
- Universidad de Sonora, Departamento de Investigaciones Científicas y Tecnológicas, Hermosillo, Sonora 83000, Mexico
| | - José Manuel Grijalva-Chon
- Universidad de Sonora, Departamento de Investigaciones Científicas y Tecnológicas, Hermosillo, Sonora 83000, Mexico.
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17
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Byeon Y, Yool Lee H, Choi DW, Back K. Chloroplast-encoded serotonin N-acetyltransferase in the red alga Pyropia yezoensis: gene transition to the nucleus from chloroplasts. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:709-17. [PMID: 25183745 PMCID: PMC4321536 DOI: 10.1093/jxb/eru357] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Melatonin biosynthesis involves the N-acetylation of arylalkylamines such as serotonin, which is catalysed by serotonin N-acetyltransferase (SNAT), the penultimate enzyme of melatonin biosynthesis in both animals and plants. Here, we report the functional characterization of a putative N-acetyltransferase gene in the chloroplast genome of the alga laver (Pyropia yezoensis, formerly known as Porphyra yezoensis) with homology to the rice SNAT gene. To confirm that the putative Pyropia yezoensis SNAT (PySNAT) gene encodes an SNAT, we cloned the full-length chloroplastidic PySNAT gene by PCR and purified the recombinant PySNAT protein from Escherichia coli. PySNAT was 174 aa and had 50% amino acid identity with cyanobacteria SNAT. Purified recombinant PySNAT showed a peak activity at 55 °C with a K m of 467 µM and V max of 28 nmol min-1 mg(-1) of protein. Unlike other plant SNATs, PySNAT localized to the cytoplasm due to a lack of N-terminal chloroplast transit peptides. Melatonin was present at 0.16ng g(-1) of fresh mass but increased during heat stress. Phylogenetic analysis of the sequence suggested that PySNAT has evolved from the cyanobacteria SNAT gene via endosymbiotic gene transfer. Additionally, the chloroplast transit peptides of plant SNATs were acquired 1500 million years ago, concurrent with the appearance of green algae.
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Affiliation(s)
- Yeong Byeon
- Department of Biotechnology, Interdisciplinary Program of Bioenergy and Biomaterials, Bioenergy Research Center, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Hyoung Yool Lee
- Department of Biotechnology, Interdisciplinary Program of Bioenergy and Biomaterials, Bioenergy Research Center, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Dong-Woog Choi
- Department of Biology Education, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Kyoungwhan Back
- Department of Biotechnology, Interdisciplinary Program of Bioenergy and Biomaterials, Bioenergy Research Center, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
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18
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Song A, Zhu X, Chen F, Gao H, Jiang J, Chen S. A chrysanthemum heat shock protein confers tolerance to abiotic stress. Int J Mol Sci 2014; 15:5063-78. [PMID: 24663057 PMCID: PMC3975440 DOI: 10.3390/ijms15035063] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 03/12/2014] [Accepted: 03/13/2014] [Indexed: 11/17/2022] Open
Abstract
Heat shock proteins are associated with protection against various abiotic stresses. Here, the isolation of a chrysanthemum cDNA belonging to the HSP70 family is reported. The cDNA, designated CgHSP70, encodes a 647-residue polypeptide, of estimated molecular mass 70.90 kDa and pI 5.12. A sub-cellular localization assay indicated that the cDNA product is deposited in the cytoplasm and nucleus. The performance of Arabidopsis thaliana plants constitutively expressing CgHSP70 demonstrated that the gene enhances tolerance to heat, drought and salinity. When CgHSP70 was stably over-expressed in chrysanthemum, the plants showed an increased peroxidase (POD) activity, higher proline content and inhibited malondialdehyde (MDA) content. After heat stress, drought or salinity the transgenic plants were better able to recover, demonstrating CgHSP70 positive effect.
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Affiliation(s)
- Aiping Song
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Xirong Zhu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Fadi Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Haishun Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jiafu Jiang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Sumei Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
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Cloning and expression of a cytosolic HSP90 gene in Chlorella vulgaris. BIOMED RESEARCH INTERNATIONAL 2014; 2014:487050. [PMID: 24738061 PMCID: PMC3971552 DOI: 10.1155/2014/487050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 01/16/2014] [Indexed: 12/31/2022]
Abstract
Heat shock protein 90 (HSP90), a highly conserved molecular chaperone, plays essential roles in folding, keeping structural integrity, and regulating the subset of cytosolic proteins. We cloned the cDNA of Chlorella vulgaris HSP90 (named CvHSP90) by combining homology cloning with rapid amplification of cDNA ends (RACE). Sequence analysis indicated that CvHSP90 is a cytosolic member of the HSP90 family. Quantitative RT-PCR was applied to determine the expression level of messenger RNA (mRNA) in CvHSP90 under different stress conditions. C. vulgaris was kept in different temperatures (5–45°C) for 1 h. The mRNA expression level of CvHSP90 increased with temperature from 5 to 10°C, went further from 35 to 40°C, and reached the maximum at 40°C. On the other hand, for C. vulgaris kept at 35°C for different durations, the mRNA expression level of CvHSP90 increased gradually and reached the peak at 7 h and then declined progressively. In addition, the expression level of CvHSP90 at 40 or 45 in salinity (‰) was almost fourfold of that at 25 in salinity (‰) for 2 h. Therefore, CvHSP90 may be a potential biomarker to monitor environment changes.
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20
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Synechocystis PCC6803 and PCC6906 dnaK2 expression confers salt and oxidative stress tolerance in Arabidopsis via reduction of hydrogen peroxide accumulation. Mol Biol Rep 2014; 41:1091-101. [DOI: 10.1007/s11033-013-2955-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 12/20/2013] [Indexed: 12/22/2022]
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21
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dos Reis SP, Lima AM, de Souza CRB. Recent molecular advances on downstream plant responses to abiotic stress. Int J Mol Sci 2012; 13:8628-8647. [PMID: 22942725 PMCID: PMC3430256 DOI: 10.3390/ijms13078628] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 06/30/2012] [Accepted: 07/03/2012] [Indexed: 11/24/2022] Open
Abstract
Abiotic stresses such as extremes of temperature and pH, high salinity and drought, comprise some of the major factors causing extensive losses to crop production worldwide. Understanding how plants respond and adapt at cellular and molecular levels to continuous environmental changes is a pre-requisite for the generation of resistant or tolerant plants to abiotic stresses. In this review we aimed to present the recent advances on mechanisms of downstream plant responses to abiotic stresses and the use of stress-related genes in the development of genetically engineered crops.
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