Positive effects of the tea catechin (-)-epigallocatechin-3-gallate on gut bacteria and fitness of Ectropis obliqua Prout (Lepidoptera: Geometridae).
Positive effects of the tea catechin (-)-epigallocatechin-3-gallate on gut bacteria and fitness of Ectropis obliqua Prout (Lepidoptera: Geometridae).
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茶儿茶素 (-)-表没食子儿茶素-3-没食子酸酯对 Ectropis obliqua Prout（鳞翅目：尺蛾科）的肠道细菌和健康状况产生积极影响。
DOI：
10.1038/s41598-019-41637-9
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发表时间：
2019
影响因子：
4.6
通讯作者：
Yunqiu Yang
中科院分区：
文献类型：
--
作者：
Yong Zhang;Tianyu Zhao;Jundan Deng;Xiaomin Zhou;Wu Zhenzhen;Qingqing Su;Longwa Zhang;Yanhua Long;Yunqiu Yang
茶尺蠖（Ectropis tuberculaProut）是我国茶树上最具毁灭性的害虫，每年危害我国数千公顷茶园。表没食子儿茶素没食子酸酯（EGCG）是茶叶中的一种主要酚类化合物，具有很强的抗菌作用。在这里，我们表明，表没食子儿茶素没食子酸酯可以有效地提高适应性的E。并提出了EGCG促进幼虫适合度的原因。本研究比较了对照、抗生素和处理三种处理对幼虫适合度的差异。EGCG和抗生素处理组的幼虫适合度与对照组相近，但优于对照组。我们还证明了EGCG处理可以显着降低大肠杆菌的物种丰富度和肠道细菌的丰度。幼虫。因此，我们推测，EGCG促进幼虫的健身，并与ECGG抗菌活性。总之，我们的研究为E.幼虫已经适应了茶叶中发现的次级化合物，甚至可能从这些化合物中受益。我们的研究也有助于更好地理解植物-昆虫相互作用的原因。
Ectropis obliqua Prout (Lepidoptera: Geometridae) is the most devastating insect pest of tea plants in China and infests thousands of hectares of tea plantations in China annually. (-)-Epigallocatechin-3-gallate (EGCG) is a major phenolic compound in tea leaves and has a strong antibacterial function. Here, we show that EGCG can effectively improve the fitness of E. obliqua larvae and present the reason by which EGCG promotes larval fitness. In this study, we compared the fitness difference among Control, Antibiotic and Treatment of larvae. The fitness of larvae treated with EGCG and antibiotic was similar and better than that of control group. We also demonstrated that EGCG treatment could significantly reduce species richness and abundance of gut bacteria in E. obliqua larvae. Hence that we speculate that EGCG promotes larval fitness and is associated with ECGG antimicrobial activity. In short, our study provides evidence of the E. obliqua larvae have adapted to secondary compounds found in tea leaves, and may even benefit from these compounds. Our study also contributes to a greater understanding of the reason involved in plant–insect interactions.