天线结合蛋白II的演化和功能,用于识别条纹跳甲虫的黄铜类挥发物
Yong Xiao1, Minxue Chen1,2, Lingling Zheng3
1Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, China.
Journal of agricultural and food chemistry
|October 8, 2025
概括
气味结合蛋白 (OBPs) 是昆虫行为的关键. 这项研究揭示了条纹跳甲虫的两个特定的OBP对于宿主植物的识别和产卵至关重要,这表明了新的害虫控制方法.
科学领域:
- 昆虫分子生物学 昆虫分子生物学
- 化学生态化学生态学
- 进化生物学是进化的生物学.
背景情况:
- 天线结合蛋白 (ABP) 对于昆虫的行为至关重要,包括食.
- 关于整个ABP家族的演变和功能的全面研究是有限的.
- 条纹跳甲虫 (Phyllotreta striolata) 是一个重要的农业害虫.
研究的目的:
- 为了研究条跳甲虫中的天线结合蛋白II (ABP II) 家族.
- 在这种害虫物种中描述OBP的遗传学和功能性质.
- 探索特定的OBP在主机挥发性识别和行为中的作用.
主要方法:
- 遗传学分析以了解ABP基因分布和演变.
- 基因表达分析以确定OBP局部化和共同表达模式.
- 具有约束力的测试用于评估OBP与植物挥发性物质的亲和力,特别是异基酸盐 (ITC).
- 通过RNA干扰 (RNAi) 来研究PstrOBP9和PstrOBP24在行为中的功能作用.
主要成果:
- 在Phyllotreta striolata中鉴定出38种臭味结合蛋白 (OBP),其中8种ABP II基因位于四个染色体上.
- PstrOBP9和PstrOBP24对黄铜植物挥发物,特别是ITCs具有很高的结合亲和力.
- 这两个OBP在天线嗅觉感官神经元中共同表达.
- 双重淘汰PstrOBP9和PstrOBP24显著损害了寻找宿主和排卵行为,表明功能冗余和补偿.
结论:
- ABP II 蛋白质,特别是 PstrOBP9 和 PstrOBP24,在条纹跳甲虫识别宿主植物挥发物质的能力中发挥着关键作用.
- 在PstrOBP9和PstrOBP24之间存在功能补偿.
- 这些发现为开发新的基于行为策略来管理这种农业害虫提供了宝贵的见解.
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