果头部空间的挥发物会触发果果及其寄生虫的不同反应
Raphael Njurai Miano1,2, Teun Dekker3, Egmont Rohwer2
1International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya.
Heliyon
|May 6, 2024
概括
果及其寄生虫对果的挥发性物质表现出不同的反应. 了解这些偏好可以帮助开发针对非洲果种植的害管理策略.
科学领域:
- 农业昆虫学 农业昆虫学
- 化学生态化学生态学
- 昆虫与植物的相互作用
背景情况:
- 在Bactrocera dorsalis引入之前,Ceratitis cosyra是撒哈拉以南非洲的主要果害虫.
- 本地寄生虫 (Psyttalia cosyrae) 和外来寄生虫 (Diachasmimorpha longicaudata,Fopius arisanus) 在IPM中用于控制C. cosyra.
- 了解三性相互作用是有效的生物控制的关键.
研究的目的:
- 评估C. cosyra及其寄生虫对果头部空间挥发物的嗅觉反应.
- 为了比较不同果品种的C. cosyra表现.
- 为了确定与不同果条件相关的挥发性化学特征.
主要方法:
- 嗅觉测量实验使用来自各种果条件 (感染,非感染,成熟,未成熟) 和清洁空气的头部空间挥发物.
- 在肯特,果和哈登果品种中评估C. cosyra的表现.
- 气色谱-质谱法 (GC-MS) 对果头部空间挥发性配置的分析.
主要成果:
- 科西拉炎被感染和非感染的果所吸引,肯特果的表现优越.
- (Fopius arisanus) 喜欢受感染果的挥发物,而P. cosyrae和D. longicaudata则被感染后9天果的挥发物所吸引.
- 在挥发性特征中观察到大量的定量和定性差异,在成熟/感染后的果中占主导地位的 Ester,在其他果中占主导地位的烯.
结论:
- 对果头部空间挥发物的物种特异反应被证明.
- 研究结果强调了使用特定挥发物作为选择性半化学品用于害虫管理的潜力.
- 对关键有吸引力的挥发性物质的进一步研究可以帮助开发针对非洲果管理的有针对性的诱.
相关概念视频
02:40Pollination and Flower Structure
Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
01:58Fruit Development, Structure, and Function
Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
02:26Responses to Gravity and Touch
Gravitropism: Plant Responses to Gravity
01:09Microbe-Plant Interactions
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...