隔离了一种高度毒性的Metarhizium菌株,该菌株向茶叶害虫Ectropis obliqua
Jie Zhao1, Yuxi Chen1, Nemat O Keyhani2
1Key Lab of Biopesticide and Chemical Biology, Ministry of Education; State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.
Frontiers in microbiology
|May 31, 2023
概括
一种新的Metarhizium pingshaense (MaFZ-13) 菌株在控制破坏性茶叶害虫Ectropis obliqua方面表现出高效. 这种微生物生物控制剂为可持续茶叶种植提供了一个有希望的环保解决方案.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 微生物生物控制 微生物生物控制
- 植物病理学 植物病理学
背景情况:
- Ectropis obliqua是中国茶叶作物的主要害虫,其抗虫剂耐药性越来越强.
- 微生物生物防治剂为害虫防治提供了对化学杀虫剂的环保替代品.
研究的目的:
- 确定中国茶叶种植地区的Ectropis obliqua的新型微生物生物控制剂.
- 评估隔离微生物剂对Ectropis obliqua幼虫的疗效.
主要方法:
- 从中国福建省的茶叶种植园收集了土壤和昆虫尸体样本.
- 用形态和分子表征来确定分离物.
- 进行了实验室和温室生物测试,以评估对E. obliqua.的杀虫活性.
主要成果:
- 确定了11个Metarhizium分离物,代表了10个物种. 在中国首次报告了四种Metarhizium物种.
- 在对抗E. obliqua. Metarhizium分离物中观察到毒性的显著变化.
- 梅塔希齐 (MaFZ-13) 呈现出最高的毒性,在实验室生物测试中达到93%的死亡率,LC50为9.6 × 10^4 conidia/mL,LT50为4.8天.
结论:
- 该研究成功地确定了土著Metarhizium物种,包括中国的新物种,作为潜在的生物控制剂.
- Metarhizium pingshaense MaFZ-13是一种高毒的分离物,有效对抗E. obliqua幼虫,适合开发环保的害虫控制策略.
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