两类防护化学物质在白杉中对杉芽虫的补充作用
Aziz Ullah1, Jennifer G Klutsch2,3, Nadir Erbilgin2
1Department of Renewable Resources, University of Alberta, Edmonton, AB, T6G 2E3, Canada. azizulla@ualberta.ca.
Planta
|March 29, 2024
概括
白杉树使用单烯和来防御昆虫害虫. 单烯增加了叶片的毒性,而类药物减缓了芽的生长,展示了联合防御策略.
科学领域:
- 植物化学 植物化学
- 森林生态 森林生态
- 昆虫与植物的相互作用
背景情况:
- 针叶树表现出多样化的防御化学物质,但其对特定昆虫食草动物的影响还未得到充分研究.
- 在受控实验中复制自然树木防御特征存在重大挑战.
研究的目的:
- 调查叶子单烯和在白杉防御中的不同和组合的作用.
- 评估各种防御化合物度和比率对东方杉芽虫存活的影响.
主要方法:
- 在80个白杉家族中检查了单烯和的防御性质.
- 根据叶子单烯度将家族分为两种化学型.
- 进行了使用代表性家庭防御特征的食实验,以评估芽的反应.
主要成果:
- 叶片中的单和的度会影响杉芽虫的生存.
- 较高的单烯比率 (0.40.6) 和度 (11431796 ng mg−1) 与完全幼虫死亡率相关.
- 较高的醇比率 (0.620.77) 和较低的单烯度 (419985 ng mg-1) 导致了较低的芽死亡率.
结论:
- 单烯和类化合物在白树对昆虫除叶剂的防御中起着互补的作用.
- 单烯有助于叶片毒性,阻止草食.
- 类物质阻碍了芽的生长,突出了这些化合物在树木防御中的协同作用.
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