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草食动物诱导的植物根挥发物酸介导着Holotrichia parallela幼虫的宿主选择

Jiarui Tao¹, Xiao Wang², Changhong Xia¹

¹College of Plant Science, Jilin University, Changchun, 130062, PR China.

Insect biochemistry and molecular biology

|November 22, 2025

概括

像Holotrichia parallela这样的土壤害虫使用气味来找到作物. 研究人员在幼虫中发现了一种特定的气味受体 (HparOR48),可以检测到根的气味,引导它们找到玉米和花生等宿主植物.

科学领域:

农业昆虫学农业昆虫学
化学生态化学生态学
昆虫的嗅觉昆虫的嗅觉

背景情况:

荷洛特里奇亚平行幼虫会损害重要的作物,影响农业生产力.
了解昆虫的嗅觉是害虫控制的关键,但地下害虫化学接收是研究不足的.

研究的目的:

研究H. parallela幼虫用于宿主定位的嗅觉机制.
确定特定的挥发性化合物和受体,参与地下害虫宿主植物相互作用.

主要方法:

来自根球和空中植物组织的挥发性化合物的比较分析.
天线转录组分析和序列结构预测以识别气味受体 (ORs).
使用Xenopus laevis卵细胞表达系统,电天线图 (EAG) 试验和行为试验 (四臂嗅计) 的功能性表征.

主要成果:

确定了HparOR48,一种OR主要表达在幼虫天线中.
HparOR48对酸,一种根系排放的挥发性物质,表现出广泛的反应.
酸引起了显著的电生理反应,并作为H. parallela幼虫的化学吸引剂.

结论:

H. parallela 幼虫利用根特异性酸性挥发物的嗅觉识别,如酸,以寻找宿主行为.
这项研究阐明了OR介导化学接收在地下害虫行为中的作用.
这些发现有助于更好地理解土壤害虫和宿主植物之间的化学交流,为新的害虫控制策略提供了潜力.

关键词:

霍洛特里奇亚平行的幼虫昆虫化学接收昆虫化学接收气味受体的受体是什么?甲酸是甲酸中的一种.植物根中的挥发性物质

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