巴西的Akanthomyces多样性及其对吸植物昆虫的致病性
Rogerio Biaggioni Lopes1, Tamires Aparecida Duarte Souza2, Gabriel Moura Mascarin3
1Embrapa Genetic Resources and Biotechnology, Brasilia, Federal District, 70770-917, Brazil.
Journal of invertebrate pathology
|June 26, 2023
概括
这项研究确定了巴西的Akanthomyces真菌,发现Akanthomyces dipterigenus和A. muscarius对白和虫等关键作物害虫非常有效,为新的生物控制剂铺平了道路.
科学领域:
- 昆虫病原菌学 昆虫病原菌学
- 生物控制 生物控制
- 菌类遗传学和基因组学 菌类遗传学和基因组学
背景情况:
- 与商业生物控制药物相比,Acanthomyces属是一组虚分体的肠病原菌,仍未得到充分研究.
- 关于巴西阿坎托米塞斯物种的宿主范围和病原性知识有限.
- 探索新型真菌菌株对于开发可持续的害虫管理策略至关重要.
研究的目的:
- 为了分子识别23个巴西阿坎托米塞斯菌株.
- 评估这些菌株对六种经济重要植物吸食昆虫的病原性.
- 通过液体发酵来评估Akanthomyces muscarius CG935的胚芽菌生产能力.
主要方法:
- 使用DNA测序进行分子识别.
- 对Bemisia tabaci,Aphis fabae,Planococcus sp.,Caliothrips phaseoli,Aleurothrixus floccosus和Duplachionaspis divergens.进行致病性测定. 这是一个非常重要的测试.
- 液体发酵用于胚芽菌生产和随后的生物测试.
主要成果:
- 在巴西发现了Acanthomyces dipterigenus,A. muscarius,A. lecanii以及两种未知的物种.
- A. dipterigenus CG829和A. muscarius CG935对Bemisia tabaci和Aphis fabae的幼虫表现出高度的毒性.
- A. muscarius CG935产生了高产的芽子 (高达3.90 × 10^9 mL-1),并有效控制了B. tabaci的.
结论:
- 巴西的Akanthomyces菌株,特别是A. dipterigenus和A. muscarius,显示出作为对特定作物害虫的生物控制剂的巨大潜力.
- 对这些菌株的进一步研究可能会导致开发新的,有效的真菌杀虫剂.
- 该研究强调了在综合性害虫防治计划中Acanthomyces物种尚未开发的潜力.
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