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基于Orthhaga achatina (Lepidoptera: Pyralidae) 周边水平的素识别的分子机制

Ting-Ting Yang¹, Yu Ma², Zheng Dai¹

¹State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; Key Laboratory of Integrated Management of Crop Disease and Pests (Ministry of Education), Nanjing Agricultural University, Nanjing, 210095, China.

Insect biochemistry and molecular biology

|April 28, 2025

概括

香是一种来自坎佛树的化合物,它吸引了害虫Orthaga achatina. 研究人员确定了一种特定的气味受体 (OachOR7) 和负责这种吸引力的关键氨基酸,为新的害虫控制策略铺平了道路.

科学领域:

昆虫嗅觉研究昆虫嗅觉研究
化学生态化学生态学
分子昆虫学分子昆虫学

背景情况:

奥尔塔加阿切蒂纳 (Orthaga achatina) 是坎佛树的重要害虫.
瓦尼林对O. achatina行为的影响是未知的.
坎佛树会释放出瓦尼林,一种潜在的吸引剂.

研究的目的:

研究O. achatina对香草素的行为反应.
确定这种反应背后的分子机制.
探索香草素作为一种潜在的害虫控制工具.

主要方法:

行为测试来测试香草的吸引力.
光竞争性结合试验用于臭剂结合蛋白 (OBPs).
对于嗅觉受体 (OR) 功能的Xenopus卵细胞表达和两电极电压 (XOE-TEVC).
3D结构建模和分子对接.
网站特定的突变发生.

主要成果:

瓦尼林在很大程度上吸引了男性和女性O. achatina成年人.
OachOBP7 显示出与香草素的高结合亲和力.
鉴定出OachOR7是素的主要嗅觉受体.
在OachOR7中的关键残留物 (Gln84和Asn189) 对素结合至关重要.

结论:

瓦尼林对O. achatina的行为吸引力得到证实.
分子基础涉及OachOR7和特定的氨基酸相互作用.
这项研究为开发基于香草素的害虫防治策略提供了基础.

关键词:

气味剂结合蛋白质是气味剂结合蛋白质的一种.气味受体的受体是什么?奥尔塔加阿切蒂纳 (Orthaga achatina) 是一个古老的阿切蒂纳.瓦尼林是一种

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