数字农科院2.0

Transcriptome Analysis and VIGS Identification of Key Genes Regulating Citric Acid Metabolism in Citrus

文献类型： 外文期刊

作者： Chen, Tianxin;Niu, Juan;Sun, Zhimin;Chen, Jing;Wang, Yue;Chen, Jianhua;Luan, Mingbao

作者机构：

关键词： citrus;citric acid;VIGS;WGCNA

期刊名称： CURRENT ISSUES IN MOLECULAR BIOLOGY

ISSN： 1467-3037

年卷期： 2023 年 45 卷 6 期

页码：

收录情况： SCIE（2023版）

摘要： Citrus (Citrus reticulata) is one of the world's most widely planted and highest-yielding fruit trees. Citrus fruits are rich in a variety of nutrients. The content of citric acid plays a decisive role in the flavor quality of the fruit. There is a high organic acid content in early-maturing and extra-precocious citrus varieties. Reducing the amount of organic acid after fruit ripening is significant to the citrus industry. In this study, we selected a low-acid variety, DF4, and a high-acid variety, WZ, as research materials. Through WGCNA analysis, two differentially expressed genes, citrate synthase (CS) and ATP citrate-pro-S-lyase (ACL), were screened out, which related to the changing citric acid. The two differentially expressed genes were preliminarily verified by constructing a virus-induced gene-silencing (VIGS) vector. The VIGS results showed that the citric acid content was negatively correlated with CS expression and positively correlated with ACL expression, while CS and ACL oppositely control citric acid and inversely regulate each other. These results provide a theoretical basis for promoting the breeding of early-maturing and low-acid citrus varieties.

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