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genome wide identification and characterization of light-harvesting Chloro a/b binding(LHC)genes reveals their potential role in enhancing drought tolerance in gossypium hirsutum

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Journal of Cotton Research 2021年第2期4卷 147-159页

作者： MEHARI Teame gereziher XU Yanchao MAgWANgA Richard Odongo UMER Muhammad Jawad KIRUNgU Joy Nyangasi CAI Xiaoyan HOU Yuqing WANg Yuhong YU Shuxun WANg Kunbo ZHOU Zhongli LIU Fang State Key Laboratory of Cotton Biology/Institute of Cotton Research Chinese Academy of Agricultural Sciences(ICRCAAS)Anyang455000HenanChina Ethiopian Institute of Agricultural Research Mekhoni Agricultural Research CenterP.O.Box 47MekhoniTigrayEthiopia School of Biological and Physical Sciences(SBPS) Main CampusJaramogi Oginga Odinga University of Science and Technology(JOOUST)Main CampusP.O.Box 210-40601BondoKenya School of Agricultural Sciences Zhengzhou UniversityZhengzhouHenan450001China

Background: Cotton is an important commercial crop for being a valuable source of natural *** production has undergone a sharp decline because of abiotic stresses,*** is one of the major abiotic stress causing significant yield losses in ***,plants have evolved self-defense mechanisms to cope abiotic factors like drought,salt,cold,*** evolution of stress responsive transcription factors such as the trihelix,a nodule-inception-like protein(NLP),and the late embryogenesis abundant proteins have shown positive response in the resistance improvement to several abiotic ***: genome wide identification and characterization of the effects of Light-Harvesting Chloro a/b binding(LHC)genes were carried out in cotton under drought stress conditions.A hundred and nine proteins encoded by the LHC genes were found in the cotton genome,with 55,27,and 27 genes found to be distributed in gossypium hirsutum,***,and ***,*** proteins encoded by the genes were unevenly distributed on various *** Ka/Ks(Non-synonymous substitution rate/Synonymous substitution rate)values were less than one,an indication of negative selection of the gene *** expressions of genes showed that majority of the genes are being highly upregulated in the roots as compared with leaves and stem *** genes were found to be highly expressed in MR-85,a relative drought tolerant ***: The results provide proofs of the possible role of the LHC genes in improving drought stress tolerance,and can be explored by cotton breeders in releasing a more drought tolerant cotton varieties.

关键词： Cotton g hirsutum LHC genes gene expression Drought tolerance

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