解淀粉芽孢杆菌
代谢组
茶氨酸
山茶
儿茶素
生物
生物肥料
咖啡因
代谢组学
食品科学
多酚
类黄酮
植物
园艺
生物化学
发酵
绿茶
生物信息学
抗氧化剂
内分泌学
作者
Xiangxiang Huang,Qian Tang,Qin Li,Haiyan Lin,Juan Li,Mingzhi Zhu,Zhonghua Liu,Kunbo Wang
标识
DOI:10.1016/j.plaphy.2022.06.016
摘要
Bacillus amyloliquefaciens is a promising microbial agent for quality improvement in crops; however, the effects of B. amyloliquefaciens biofertilizers on tea leaf metabolites are relatively unknown. Herein, a combination of metabolome profiling and transcriptome analysis was employed to investigate the effects of foliar spraying with B. amyloliquefaciens biofertilizers on tea leaf quality. The tea polyphenol to amino acid ratio (TP/AA), catechin, and caffeine levels decreased, but theanine level increased in tea leaves after foliar spraying with B. amyloliquefaciens. The differentially accumulated metabolites included flavonoids, phenolic acids, organic acids, amino acids, and carbohydrates. The decrease in catechin was correlated with the catechin/flavonoid biosynthesis pathway. The AMPD gene was highly associated with caffeine content, while the GOGAT gene was associated with theanine accumulation. Foliar spraying with B. amyloliquefaciens biofertilizers may improve summer tea quality. Our findings provide a basis for the application of B. amyloliquefaciens biofertilizers in tea plants and new insights on summer tea leaf resource utilization.
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