类物质参与了奥地利松树在系统性诱导抵抗的表达
Soumya K Ghosh1, Guncha Ishangulyyeva2, Nadir Erbilgin2
1Department of Plant Pathology, The Ohio State University, Columbus, Ohio, USA.
Plant, cell & environment
|March 14, 2024
概括
在奥地利松树对病原体的系统诱导耐药性 (SIR) 中,类具有微妙的作用. 一些类化合物,如α-pinene,表现出抗真菌活性,并可能信号防御.
科学领域:
- 植物病理学 植物病理学
- 森林病理学 森林病理学
- 化学生态化学生态学
背景情况:
- 类是植物防御化合物,由感染或受伤引起的.
- 类素在全身诱导耐药性 (SIR) 中的作用仍然在很大程度上未被探索.
- 奥地利松 (Pinus nigra) 与Diplodia pinea的相互作用,这是一种致病原体,导致尖端和,提供了一个模型系统.
研究的目的:
- 研究类素在奥地利松树对Diplodia pinea的系统诱导抵抗 (SIR) 的早期参与.
- 为了确定特异性 terpenoid 形状和诱导抗性的水平之间的相关性.
- 评估关键类的体外抗真菌活性,以对抗D. pinea.
主要方法:
- 奥地利松树苗是通过伤害或D. pinea在下层茎上的接种诱导的.
- 在12小时,72小时或10天后,在更高的茎部位用D. pinea挑战种子.
- 在诱导和挑战地点测量了损伤长度和类度.
- 进行了体外生物测试,以评估分离的类的抗真菌活性.
主要成果:
- 系统诱导抵抗 (SIR) 随着时间的推移而增加.
- α-Pinene,β-pinene,limonene,benzaldehyde,dodecanol和n-dodecyl acrylate与SIR正相关,并表现出真菌抑制活性.
- 其他类化合物与SIR有负相关性,可能作为D. pinea. 的碳来源.
结论:
- 类植物是奥地利松树SIR的组成部分,其功能取决于诱导类型和化时间.
- 特定的类化合物,特别是α-pinene,表现出抗真菌特性,并可能在植物防御中充当信号分子.
- 这项研究突出了类在植物病原体相互作用中的复杂,双重作用.
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