数字农科院2.0

Genome-wide identification and expression analysis of 3-ketoacyl-CoA synthase gene family in rice (Oryza sativa L.) under cadmium stress

文献类型： 外文期刊

作者： Lingwei Yang;Junchao Fang;Jingxin Wang;Suozhen Hui;Liang Zhou;Bo Xu;Yujuan Chen;Yuanyuan Zhang;Changkai Lai;Guiai Jiao;Zhonghua Sheng;Xiangjin Wei;Gaoneng Shao;Lihong Xie;Ling Wang;Ying Chen;Fengli Zhao;Shikai Hu;Peisong Hu;S. Tang

作者机构：

关键词： cadmium stress;gene family;rice;very long-chain fatty acids;β-ketoacyl-CoA synthase

期刊名称： Frontiers in Plant Science

ISSN： 1664-462X

年卷期： 2023 年 14 卷

页码：

收录情况： SCIE（2023版）

摘要： 3-Ketoacyl-CoA synthase (KCS) is the key rate-limiting enzyme for the synthesis of very long-chain fatty acids (VLCFAs) in plants, which determines the carbon chain length of VLCFAs. However, a comprehensive study of KCSs in Oryza sativa has not been reported yet. In this study, we identified 22 OsKCS genes in rice, which are unevenly distributed on nine chromosomes. The OsKCS gene family is divided into six subclasses. Many cis-acting elements related to plant growth, light, hormone, and stress response were enriched in the promoters of OsKCS genes. Gene duplication played a crucial role in the expansion of the OsKCS gene family and underwent a strong purifying selection. Quantitative Real-time polymerase chain reaction (qRT-PCR) results revealed that most KCS genes are constitutively expressed. We also revealed that KCS genes responded differently to exogenous cadmium stress in japonica and indica background, and the KCS genes with higher expression in leaves and seeds may have functions under cadmium stress. This study provides a basis for further understanding the functions of KCS genes and the biosynthesis of VLCFA in rice.

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