Transcriptomic Analysis Reveals the Molecular Adaptation of Three Major Secondary Metabolic Pathways to Multiple Macronutrient Starvation in Tea (Camellia sinensis)

文献类型： 外文期刊

第一作者： Su, Hui

作者： Su, Hui;Wang, Yuefei;Xu, Ping;Su, Hui;Zhang, Xueying;He, Yuqing;Li, Linying;Hong, Gaojie

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关键词： Camellia sinensis; transcriptomics; macronutrient starvation; secondary metabolite; transcription factors

期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）

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年卷期： 2020 年 11 卷 3 期

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收录情况： SCI

摘要： Tea (Camellia sinensis (L.) O. Kuntze) is a widely consumed beverage. Lack of macronutrients is a major cause of tea yield and quality losses. Though the effects of macronutrient starvation on tea metabolism have been studied, little is known about their molecular mechanisms. Hence, we investigated changes in the gene expression of tea plants under nitrogen (N), phosphate (P), and potassium (K) deficient conditions by RNA-sequencing. A total of 9103 differentially expressed genes (DEG) were identified. Function enrichment analysis showed that many biological processes and pathways were common to N, P, and K starvation. In particular, cis-element analysis of promoter of genes uncovered that members of the WRKY, MYB, bHLH, NF-Y, NAC, Trihelix, and GATA families were more likely to regulate genes involved in catechins, l-theanine, and caffeine biosynthetic pathways. Our results provide a comprehensive insight into the mechanisms of responses to N, P, and K starvation, and a global basis for the improvement of tea quality and molecular breeding.

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