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Tang S, Xian Y, Wang F, Luo C, Song W, Xie S, Chen X, Cao A, Li H, Liu H. Comparative transcriptome analysis of leaves during early stages of chilling stress in two different chilling-tolerant brown-fiber cotton cultivars. PLoS One 2021; 16:e0246801. [PMID: 33561168 PMCID: PMC7872267 DOI: 10.1371/journal.pone.0246801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/26/2021] [Indexed: 11/18/2022] Open
Abstract
Chilling stress generates significant inhibition of normal growth and development of cotton plants and lead to severe reduction of fiber quality and yield. Currently, little is known for the molecular mechanism of brown-fiber cotton (BFC) to respond to chilling stress. Herein, RNA-sequencing (RNA-seq)-based comparative analysis of leaves under 4°C treatment in two different-tolerant BFC cultivars, chilling-sensitive (CS) XC20 and chilling-tolerant (CT) Z1612, was performed to investigate the response mechanism. A total of 72650 unigenes were identified with eight commonly used databases. Venn diagram analysis identified 1194 differentially expressed genes (DEGs) with significant up-regulation in all comparison groups. Furthermore, enrichment analyses of COG and KEGG, as well as qRT-PCR validation, indicated that 279 genes were discovered as up-regulated DEGs (UDEGs) with constant significant increased expression in CT cultivar Z1612 groups at the dimensions of both each comparison group and treatment time, locating in the enriched pathways of signal transduction, protein and carbohydrate metabolism, and cell component. Moreover, the comprehensive analyses of gene expression, physiological index and intracellular metabolite detections, and ascorbate antioxidative metabolism measurement validated the functional contributions of these identified candidate genes and pathways to chilling stress. Together, this study for the first time report the candidate key genes and metabolic pathways responding to chilling stress in BFC, and provide the effective reference for understanding the regulatory mechanism of low temperature adaptation in cotton.
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Affiliation(s)
- Shouwu Tang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
- China Colored-cotton (Group) Co., Ltd., Urumqi, China
| | - Yajie Xian
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Fei Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Cheng Luo
- China Colored-cotton (Group) Co., Ltd., Urumqi, China
| | - Wu Song
- China Colored-cotton (Group) Co., Ltd., Urumqi, China
| | - Shuangquan Xie
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Xifeng Chen
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Aiping Cao
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Hongbin Li
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
| | - Haifeng Liu
- China Colored-cotton (Group) Co., Ltd., Urumqi, China
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Yoeun S, Cho K, Han O. Structural Evidence for the Substrate Channeling of Rice Allene Oxide Cyclase in Biologically Analogous Nazarov Reaction. Front Chem 2018; 6:500. [PMID: 30425978 PMCID: PMC6218421 DOI: 10.3389/fchem.2018.00500] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/01/2018] [Indexed: 01/05/2023] Open
Abstract
Allene oxide cyclase (AOC) is a key enzyme in the jasmonic acid (JA) biosynthetic pathway in plants, during which it catalyzes stereospecific conversion of 12,13(S)-epoxy-9(Z),11,15(Z)-octadecatrienoic acid (12,13-EOT) to cis(+)-12-oxophytodienoic acid. Here, rice allene oxide cyclase (OsAOC) was localized to the chloroplast and its native oligomeric structure was analyzed by gel electrophoresis in the absence and presence of a protein-crosslinking reagent. The results suggest that OsAOC exists in solution as a mixture of monomers, dimers, and higher order multimers. OsAOC preferentially exists as dimer at room temperature, but it undergoes temperature-dependent partial denaturation in the presence of SDS. A heteromeric 2:1 complex of OsAOC and rice allene oxide synthase-1 (OsAOS1) was detected after cross-linking. The yield of cis(+)-12-oxophytodienoic acid reached maximal saturation at a 5:1 molar ratio of OsAOC to OsAOS1, when OsAOC and OsAOS1 reactions were coupled. These results suggest that the OsAOC dimer may facilitate its interaction with OsAOS1, and that the heteromeric 2:1 complex may promote efficient channeling of the unstable allene oxide intermediate during catalysis. In addition, conceptual similarities between the reaction catalyzed by AOC and Nazarov cyclization are discussed.
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Affiliation(s)
- Sereyvath Yoeun
- Department of Molecular Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea.,Faculty of Chemical and Food Engineering, Institute of Technology of Cambodia, Phnom Penh, Cambodia
| | - Kyoungwon Cho
- Department of Molecular Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Oksoo Han
- Department of Molecular Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
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Yamashita Y, Ota M, Inoue Y, Hasebe Y, Okamoto M, Inukai T, Masuta C, Sakihama Y, Hashidoko Y, Kojima M, Sakakibara H, Inage Y, Takahashi K, Yoshihara T, Matsuura H. Chemical Promotion of Endogenous Amounts of ABA in Arabidopsis thaliana by a Natural Product, Theobroxide. PLANT & CELL PHYSIOLOGY 2016; 57:986-99. [PMID: 26917631 DOI: 10.1093/pcp/pcw037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 02/14/2016] [Indexed: 05/21/2023]
Abstract
Plant hormones are a group of structurally diverse small compounds that orchestrate the cellular processes governing proper plant growth and environmental adaptation. To understand the details of hormonal activity, we must study not only their inherent activities but also the cross-talk among plant hormones. In addition to their use in agriculture, plant chemical activators, such as probenazole and uniconazole, have made great contributions to understand hormonal cross-talk. However, the use of plant chemical activators is limited due to the lack of activators for certain hormones. For example, to the best of our knowledge, there are only a few chemical activators previously known to stimulate the accumulation of ABA in plants, such as absinazoles and proanthocyanidins. In many cases, antagonistic effects have been examined in experiments using exogenously applied ABA, although these studies did not account for biologically relevant concentrations. In this report, it was found that a natural product, theobroxide, had potential as a plant chemical activator for stimulating the accumulation of ABA. Using theobroxide, the antagonistic effect of ABA against GAs was proved without exogenously applying ABA or using mutant plants. Our results suggest that ABA levels could be chemically controlled to elicit ABA-dependent biological phenomena.
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Affiliation(s)
- Yudai Yamashita
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Maremichi Ota
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Yutaka Inoue
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Youko Hasebe
- Laboratory of Cell Biology and Manipulation, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Masanori Okamoto
- Arid Land Research Center, Tottori University, Tottori, Japan PRESTO, Japan Science and Technology Agency, Saitama, Japan
| | - Tsuyoshi Inukai
- Laboratory of Cell Biology and Manipulation, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Chikra Masuta
- Laboratory of Cell Biology and Manipulation, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Yasuko Sakihama
- Laboratory of Ecological Biochemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Yasuyuki Hashidoko
- Laboratory of Ecological Biochemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045 Japan
| | - Hitoshi Sakakibara
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045 Japan
| | - Yasuyuki Inage
- Japan Agricultural Cooperatives Minami Sorachi, Kuriyama, Yubari-gun, Hokkaido, 069-1511 Japan
| | - Kosaku Takahashi
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Teruhiko Yoshihara
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
| | - Hideyuki Matsuura
- Laboratory of Natural Product Chemistry, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589 Japan
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