Impact of Ectropis grisescens Warren (Lepidoptera: Geometridae) Infestation on the Tea Plant Rhizosphere Microbiome and Its Potential for Enhanced Biocontrol and Plant Health Management
灰茶尺蠖侵染对茶树根际微生物群落的影响及其加强生物防治和植物健康管理的潜能
- 关键词：
- 来源：
- Insects 期刊
- 类型：
- 学术文献
- 语种：
- 英语
- 原文发布日期：
- 2025-04-14
- 摘要：
- Rhizosphere bacteria play a key role in helping plants resist stress, but it has not been explored whether tea trees can also mobilize their rhizosphere bacteria to help them resist the stress of the Ectropis grisescens Warren (Lepidoptera: Geometridae) after being invaded by it. The study took samples of leaves, roots, and rhizosphere soil at different times after the plants were attacked by E. grisescens. Using 16S rRNA sequencing, we observed significant shifts in bacterial communities by the seventh day. Transcriptomic analysis showed that the E. grisescens attack triggered reprogramming of the tea root transcriptome, leading to changes in the rhizosphere bacterial community. Analysis of the rhizosphere soil on the seventh day revealed alterations in the microbial network structure and the core microorganisms within the network following the attack; microorganisms related to nitrogen (N) metabolism were mobilized in the rhizosphere. Notably, nitrogen-fixing bacteria from the genus Burkholderia were actively recruited and became important contributors in the rhizosphere. When these separated Burkholderia strains were reintroduced into tea trees, the level of insect-resistant substances in tea leaves was increased, thereby improving the insect resistance of tea trees.
- 所属专题：
- 60
