Metabolic Rewiring in Tea Plants in Response to Gray Blight Disease Unveiled by Multi-Omics Analysis

文献类型： 外文期刊

第一作者： Zheng, Shiqin

作者： Zheng, Shiqin;Zheng, Shiqin;Du, Zhenghua;Wang, Xiaxia;Zheng, Chao;Yu, Xiaomin;Zheng, Shiqin;Wang, Zonghua;Wang, Zonghua

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关键词： tea plant; gray blight disease; flavonoid; lignin; defense-related metabolites; metabolomics; transcriptomics

期刊名称：METABOLITES （ 影响因子：4.1； 五年影响因子：4.5 ）

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年卷期： 2023 年 13 卷 11 期

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收录情况： SCI

摘要： Gray blight disease, which is caused by Pestalotiopsis-like species, poses significant challenges to global tea production. However, the comprehensive metabolic responses of tea plants during gray blight infection remain understudied. Here, we employed a multi-omics strategy to characterize the temporal transcriptomic and metabolomic changes in tea plants during infection by Pseudopestalotiopsis theae, the causal agent of gray blight. Untargeted metabolomic profiling with ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOFMS) revealed extensive metabolic rewiring over the course of infection, particularly within 24 h post-inoculation. A total of 64 differentially accumulated metabolites were identified, including elevated levels of antimicrobial compounds such as caffeine and (-)-epigallocatechin 3-gallate, as well as oxidative catechin polymers like theaflavins, theasinensins and theacitrins. Conversely, the synthesis of (+)-catechin, (-)-epicatechin, oligomeric proanthocyanidins and flavonol glycosides decreased. Integrated omics analyses uncovered up-regulation of phenylpropanoid, flavonoid, lignin biosynthesis and down-regulation of photosynthesis in response to the pathogen stress. This study provides novel insights into the defense strategies of tea plants against gray blight disease, offering potential targets for disease control and crop improvement.

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