外源抑制剂通过在高CO2下增强烯胺路径来增强植物对大米虫的抵抗力2
Ruichuan Duan1, Xinru Xiao1, Fajun Chen1
1State Key Laboratory of Agricultural and Forestry Biosecurity, Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
Plant, cell & environment
|November 14, 2025
概括
升高的二氧化碳加剧了棕色虫对大米的破坏. 使用 piperonylic 酸 (PA) 和 MDCA 抑制特定的酶可以增强大米对这种害虫的防御能力,尤其是在高CO2 的情况下.
科学领域:
- 植物科学 植物科学
- 昆虫学 昆虫学是一门学科.
- 生物化学 生物化学
背景情况:
- 升高的二氧化碳 (eCO2) 加剧了对大米的破坏.
- 甲路径对于植物的耐药性至关重要.
- 针对特定的酶可以激活补偿性防御通路.
研究的目的:
- 调查酸-4-氧酶 (C4H) 和4-酸:CoA结合酶 (4CL) 抑制剂对米在环境和高CO2下对N. lugens的耐药性的影响.
- 探索这些抑制剂激活的潜在防御机制.
主要方法:
- 大米植物被用piperonylic酸 (PA) 和3,4-(methylenedioxy) 肉酸 (MDCA) 处理.
- 对N. lugens养和生存的影响在环境CO2 (aCO2) 和eCO2.2) 条件下进行了评估.
- 分析了ROS系统激活,甲路径变化和基酸衍生物水平.
主要成果:
- PA和MDCA治疗显著降低了N. lugens的食和生存率,特别是在eCO2.
- 这些治疗激活了中的ROS系统和烯胺路径.
- 在eCO2下观察到基酸衍生物的增加,增强了植物防御能力.
结论:
- 在eCO2下,PA和MDCA增强了大米对N. lugens的抵抗力.
- 诱导化合物通过激活害虫中的植物防御和排毒酶来抑制害虫的食和生存.
- 这提供了一个潜在的策略,以减轻气候变化加剧的害虫对大米的破坏.
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