在Riptortus pedestris (Hemiptera: Alydidae) 中体质piRNA和PIWI基因的识别和表达模式
Yipeng Ren1, Wenhao Dong2, Wenjun Bu1
1Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, P.R. China.
Archives of insect biochemistry and physiology
|April 9, 2024
概括
使用piRNAs的RNA干扰 (RNAi) 为像Riptortus pedestris这样的大豆害虫提供了一种可持续的害虫控制方法. 这项研究确定了关键的基因和piRNA,将它们的表达与肠道细菌联系起来,用于新型生物杀虫剂的开发.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 虫害管理 虫害管理 虫害管理
背景情况:
- RNA干扰 (RNAi) 是一种可持续的替代化学杀虫剂,用于控制半虫害.
- 有限的数据存在于体质Piwi交互RNAs (piRNAs) 及其生物发生基因在Riptortus pedestris,一个重要的大豆害虫.
研究的目的:
- 在R. pedestris.中识别和描述PIWI基因 (RpAgo3和RpAub)
- 分析这些基因和相关的piRNAs在发育阶段和肠道环境中的表达模式.
- 研究R. pedestris.中的piRNA表达和肠道细菌组成之间的关系.
主要方法:
- 对PIWI基因家族成员 (RpAgo3,RpAub) 的鉴定和遗传学分析.
- 基因表达在不同发育阶段和不同养殖条件下使用转录组数据进行基因表达分析.
- 通过过测序的基因组映射进行piRNA识别和表征.
- 差异表达的piRNAs与肠道细菌组成之间的相关性分析 (Pearson).
主要成果:
- 在R. pedestris中,两种PIWI基因RpAgo3和RpAub被确定并进行了表征,显示了保留的域和系遗传关系.
- 这些基因在所有发育阶段都得到表达,在不同条件下,肠道表达较低.
- 总共有45,998个piRNA被确定,在5'端表现出尿素偏差,长度为26-32 nt.
- 在差异表达的piRNA和肠道细菌变化之间发现了显著的正负相关性.
结论:
- 这项研究成功地确定了关键的PIWI基因,并在R. pedestris中表征了piRNAs.
- 研究结果揭示了piRNA表达特征和肠道细菌群落之间的关联.
- 这项研究为开发基于RNAi的生物杀虫剂用于半虫害控制提供了基础.
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