Flavonoid accumulation in spontaneous cotton mutant results in red coloration and enhanced disease resistance

文献类型： 外文期刊

第一作者： Long, Lu

作者： Long, Lu;Gao, Ya;Xu, Fu-Chun;Zhao, Jing-Ruo;Li, Bing;Gao, Wei;Liu, Ji

作者机构：

关键词： Secondary metabolism; Metabolomics analysis; Anthocyanin; Cotton breeding; Crop protection

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2019 年 143 卷

页码：

收录情况： SCI

摘要： Cotton, the leading natural fiber, is cultivated worldwide, but its production is seriously threatened by pathogens. Accordingly, the selection of resistant cultivars has become a key priority of cotton breeding programs. In this study, a spontaneous mutant with red coloration (S156) and a control cultivar (S78) were used as experimental materials for a comparative analysis. Metabolomic analysis revealed the enrichment of fiavonoids in S156 leaves compared with S78 leaves, and transcriptomic analysis revealed the upregulated expression of fiavonoid biosynthesis genes in S156 leaves relative to S78 leaves. In addition, the red mutant showed a significantly increase in resistance to Verticillium dahliae, a fungal pathogen that poses a major threat to cotton production. The pathogen invasion process was suppressed in the red cotton cultivar. This study reveals the mechanism underlying the red coloration of 5156 cotton and indicates the great potential of red cotton in pathogen- and insect-resistant breeding of cotton.

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