一种敏感的方法来检测贝沃里亚巴西安纳,一种杀虫剂生物控制剂,种群动态和不同基质的稳定性
Zepei Gu1,2, Lijie Chen2,3, Weixing Zhang2
1College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
概括
一种新的定量实时PCR方法有效地监测了Boeveria bassiana (Bb) 在各种环境中的存活率. 这项技术揭示了Bb种群动态,显示了最初的下降,随后恢复,有助于生物控制策略的开发.
科学领域:
- 农业昆虫学 农业昆虫学
- 微生物生物控制 微生物生物控制
- 分子生物学分子生物学
背景情况:
- 贝奥维里亚巴西安纳 (Beauveria bassiana) 是一种用于生物害虫防治的关键性肠病原菌菌.
- 由于缺乏快速可靠的检测方法,对其现场有效性的评估受到阻碍.
- 了解Beauveria bassiana种群动态对于优化其应用至关重要.
研究的目的:
- 开发一种定量实时PCR (qPCR) 技术,用于监测Beauveria bassiana.
- 为了研究贝奥维利亚巴西安纳在各种基板中的稳定性和种群动态.
- 为了确定控制Pieris rapae的最佳度Beauveria bassiana.
主要方法:
- 开发一种定量实时PCR测定方法,用于检测Beauveria bassiana的DNA.
- 监测水,土壤和棉花叶面上的Beauveria bassiana种群.
- 评估不同度的Beauveria bassiana子对Pieris rapae的杀虫疗效.
主要成果:
- 在所有基质中,Beauveria bassiana的DNA度从注射后的第1天到第9天下降.
- 从第11天开始,观察到Beauveria bassiana DNA的显著反弹,表明恢复和生长.
- 对Pieris rapae的最佳杀虫效果是在Beauveria bassiana的1.0 x 10^7子/毫升时实现的.
结论:
- 开发的qPCR技术为监测Beauveria bassiana度和稳定性提供了一种快速可靠的方法.
- 在与现场相关的条件下,Beauveria bassiana表现出动态的种群波动,具有显著的恢复阶段.
- 这种监测工具可以大大帮助开发有效的实地应用策略,用于 Beauveria bassiana 的生物控制.
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