木游行的病原体 Thaumetopoea processionea:开发一个用户友好的生物测试系统和微生物的元基因组分析
Lea Schäfer1, Johannes A Jehle1, Regina G Kleespies1
1Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Biological Control, Schwabenheimer Str. 101, 69221 Dossenheim, Germany.
Journal of invertebrate pathology
|May 5, 2024
概括
一个新的生物测试系统有效地测试了细菌病原体,以控制树游行 (OPM) 幼虫. 虽然Bacillus thuringiensis ssp. 在这种情况下. 库尔斯塔基 (Btk) 证明有效,Bacillus wiedmannii没有感染OPM,但其他细菌被确定为潜在的生物控制剂.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 微生物学 微生物学
- 植物病理学 植物病理学
背景情况:
- 树游行 (OPM) 是树的重要害虫,导致树叶脱落并对人类造成健康风险.
- 目前的生物控制依赖于Bacillus thuringiensis ssp. 这种植物. 库尔斯塔基 (Btk),但在培养OPM用于实验室研究和病原体查方面存在挑战.
- 开发高效的生物测试对于识别用于OPM管理的新型昆虫病原体至关重要.
研究的目的:
- 开发和验证一个用户友好的生物测试系统,用于测试对早期OPM幼虫的肠病原细菌.
- 评估Bacillus wiedmannii作为OPM的潜在生物控制剂的疗效.
- 使用元基因组测序,从OPM幼虫中识别潜在的虫病致病细菌.
主要方法:
- 建立了一个新的生物测试系统,涉及树芽浸泡细菌子悬浮物和第一阶段OPM幼虫的食暴露.
- 商业Btk HD-1菌株被用作生物试验验证的阳性对照.
- 纳米孔测序用于在感染实验期间死亡的OPM幼虫的元基因组分析.
主要成果:
- 开发的生物测试系统在未经治疗的对照组中显示出功能性,死亡率可以忽略不计.
- 商用Btk HD-1菌株证实对OPM幼虫的高疗效.
- 维德曼菌对OPM幼虫没有产生虫病原性作用,而元基因组分析显示了来自Serratia和Pseudomonas属的潜在病原体.
结论:
- 已建立的生物测试系统适用于对OPM的昆虫病原体的评估,促进生物控制策略的研究和开发.
- 维德曼尼菌不是对OPM控制的有效药物.
- 甲基因组分析提供了一个强大的工具,用于发现新的昆虫病原体,并扩大生物控制剂的武器库OPM.
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