间作物改变了对抗昆虫草本牙的植物化学防御
Jarrod Q Fyie1, Chase A Stratton1, William R Morrison2
1The Land Institute.
Research square
|September 24, 2024
概括
交叉种植多种植物会改变植物挥发性有机化合物 (VOC) 排放量,从而可能增强自然害虫防御能力. 这项研究探讨了农业生态系统中的植物相互作用如何改善害虫耐药性和可持续性.
科学领域:
- 农业生态学 农业生态学
- 植物化学生态学植物化学生态学
- 昆虫与植物的相互作用
背景情况:
- 跨种类的化学相互作用可以改变植物的防御.
- 与各种邻居交叉种植可能会增强作物中的植物化学防御.
研究的目的:
- 评估杂交作物对空中挥发性有机化合物 (VOC) 排放的影响.
- 评估杂交作物对诱导的植物防御对昆虫草食的影响.
主要方法:
- 在AMF注射的土壤中与Silphium integrifolium* (丝花) 交叉种植Melilotus alba* (三叶草) 和Triticum aestivum* (小麦) 在AMF注射的土壤中.
- 评估挥发性有机物排放概况,并使用Spodoptera frugiperda (秋季军虫) 进行现场生物测试.
主要成果:
- 在与小麦和诱导草食单一耕种下,丝花中的醇脂 (类) 被上调.
- 碳氧酸和有机氧化合物在与银花交叉耕种时在甘中减少,但在草食中增加.
- 小麦在未受感染和与花交叉种植时,会释放出更多的有机氧化合物和脂肪酸.
结论:
- 间作物和草食在很大程度上改变了植物的VOC排放.
- 这些VOC的变化可能会影响昆虫的草食耐药性.
- 优化交叉作物系统可以增强天然植物防御,促进农业的可持续性.
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