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史无前例的卵置策略避免了植物的防御,并减少了寄生虫黄蜂的攻击

Jin-Hua Shi¹, Ze Sun¹, John A Pickett²

¹Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.

Plant, cell & environment

|October 9, 2023

概括

东方军虫 (Mythimna separata) 雌性在枯的小麦叶子上产卵,避免植物防御和自然敌人. 这种令人惊的策略增强了幼虫对抗害虫的生存能力.

科学领域:

植物与昆虫的相互作用
化学生态化学生态学
农业昆虫学农业昆虫学

背景情况:

昆虫通常在新鲜的植物材料上产卵,以培育后代.
东方军虫 (Mythimna separata) 是小麦等作物的重要害虫.
Mythimna separata表现出不寻常的卵位行为,更喜欢枯的叶子.

研究的目的:

调查Mythimna separata喜欢在枯的小麦叶子上产卵的原因.
了解这种卵置策略如何影响植物防御机制和自然敌人相互作用.
为了阐明这种植物-昆虫相互作用中涉及的化学线索.

主要方法:

对产卵诱导的植物挥发性物质 (乙,四,五) 的分析.
卵寄生虫 (Trichogramma chilonis) 对特定挥发物质的吸引力的量化.
在排卵后测量叶子的斯蒙酸水平.
观察幼虫的行为 (爬行速度,忍受饥饿).

主要成果:

小麦植物在M. separata的蛋沉积时释放诸如阿塞托芬之类的挥发性物质,吸引寄生虫Trichogramma chilonis.
在排卵后,小麦叶中的斯蒙酸水平会增加,从而启动植物对幼虫的防御.
由于在枯的叶子上快速爬行和忍受饥饿,M. separata幼虫的生存率提高.

结论:

在枯的叶子上放置卵子使Mythimna separata能够逃避植物防御和自然敌人.
这一策略是由特定的挥发性有机化合物和增强的幼虫适应促进的.
这项研究揭示了农业系统中草食动物生存的新机制.

关键词:

这就是"Mythimna separata"的意思.三重图形千里尼斯 (英语:Trichogramma chilonis) 是一个三重图形.激素激素激素激素激素激素激素激素昆虫是一种草食动物.植物与昆虫的相互作用.偏好-绩效假设是什么挥发性资产挥发性资产

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