Genome-wide identification and characterization of HSP70 gene family in four species of cotton

文献类型： 外文期刊

第一作者： Rehman, Abdul

作者： Rehman, Abdul;Du, Xiongming;Azhar, Muhammad Tehseen;Atif, Rana Muhammad;Qayyum, Abdul;Hinze, Lori

作者机构：

关键词： Cellular localization; Cotton; Heat shock protein; HSP70; Substitution rate

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2020 年 112 卷 6 期

页码：

收录情况： SCI

摘要： Heat shock proteins (HSPs) are important elements of the cellular group of molecular chaperones. Specifically, HSP70 proteins protect cells from being damaged when plants are exposed to environmental stresses. These proteins are catalysts that manage the correct folding of other proteins, and they play a key role in the development of tolerance against biotic and abiotic stresses. In the present study, 113 HSP70 genes were retrieved from the available genome assemblies of four cotton species, including Gossypium hirsutum, G. barbadense, G. arboreum, and G. raimondii. The HSP70 genes were clustered into 11 subfamilies based on phylogeny. One hundred and nine (109) gene duplications were found across these four species. Localization of genes revealed that several HSP70 genes reside in the cytoplasm. Synonymous and non-synonymous substitution rates revealed that functional segregation of HSP70 genes in cotton is due to purifying selection. Furthermore, HSP70 genes in cotton are expressed constitutively during developmental stages. These findings are valuable to understand the complex mechanism of HSP70 gene regulation that occurs in signaling pathways in response to plant stress.

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