由虫攻击诱导的地下小挥发性脂性分子引起了邻近未被感染的植物的防御反应
Pasquale Cascone1, Jozsef Vuts2, Michael A Birkett2
1Institute for Sustainable Plant Protection, Consiglio Nazionale delle Ricerche, Portici, Napoli, Italy.
Frontiers in plant science
|July 10, 2023
概括
虫感染的大豆植物释放根信号,吸引有益的寄生虫到邻近的植物. 科学家们确定了三种挥发性化合物,1-octen-3-ol,sulcatone和sulcatol,它们调解了这种植物之间的沟通,以保护作物.
科学领域:
- 植物与昆虫的相互作用
- 化学生态化学生态学
- 地下通信是地下的.
背景情况:
- 植物可以通过地下信号进行通信,从而影响邻近植物的防御.
- 在大豆植物 (Vicia faba) 上的虫感染吸引了虫寄生虫 (Aphidius ervi) 到附近的健康植物.
研究的目的:
- 为了识别植根圈 (根区) 中介植物间通信的信号.
- 确定已识别的信号是否可以引起防御反应并吸引自然敌人.
主要方法:
- 使用固相提取 (SPE) 从虫感染和未感染的Vicia faba植物收集的根排泄物.
- 在风洞生物测试中测试了根排泄物吸引Aphidius ervi的能力.
- 使用SPE提取物识别的挥发性化合物和特征的头部空间挥发物.
主要成果:
- 在受感染的植物根排泄物中发现了三种挥发性脂性分子 (1-octen-3-ol,sulcatone,sulcatol).
- 用这些化合物治疗的Vicia faba植物显著增加了对Aphidius ervi.的吸引力.
- 在测试这三种化合物时观察到一个协同效应,增强了寄生虫的吸引力.
结论:
- 1-octen-3-ol,sulcatone和sulcatol是中介地下植物之间的沟通的关键半化学物质.
- 这些发现支持生物衍生半化学品用于可持续的农业害虫管理.
相关概念视频
Defenses Against Pathogens and Herbivores
23.8K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
23.8K
Plant Hormones
24.2K
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
24.2K
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Introduction to Plant Diversity
45.1K
From Water to Land
45.1K


