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来自不同来源的性物质调节了受粉感染的植物中酸介导的防御

Rakiely M Silva¹, Vicente Mussi-Dias², Fábio L Olivares¹

¹Núcleo de Desenvolvimento de Insumos Biológicos para Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Ave Alberto Lamego 2000, Campos dos Goytacazes 28013-602, Brazil.

Plants (Basel, Switzerland)

|December 31, 2025

概括

来自和泥炭的性物质 (HS) 增强了番茄植物对粉的免疫力. 来自泥炭的HS通过激活酸 (SA) 介导的防御通路和关键的防御基因提供了更大的保护.

科学领域:

植物病理学植物病理学
农业科学农业科学
生物化学生物化学

背景情况:

现代农业对化学投入的依赖引发了环境和健康方面的担忧.
生物刺激剂,特别是性物质 (HS),通过调节植物生长和防御,提供可持续的替代品.
了解HS对植物防御路径的结构影响对于可持续农业至关重要.

研究的目的:

为了评估 (Vc) 和泥炭 (Pt) 衍生HS对酸 (SA) 介导的防护途径的作用,在番茄植物中感染粉状菌 (Oidium sp. ) 的情况.
使用固态C CPMAS NMR来描述HS的结构性质.
评估HS对与防御相关的酶活动和基因表达的影响.

主要方法:

使用固态C CPMAS NMR从虫堆肥和泥炭中鉴定HS的特征.
番茄植物的感染 (Solanum lycopersicum cv. 番茄植物的感染) 微型姆) 与Oidium sp. 在一起.
酶活性的光谱测定 (脂氧酶,过氧酶,氨氨氨酸氨酸酶,β 1,3-葡萄糖酶).
用RT-qPCR量化SA信号和防御基因的基因表达水平.

主要成果:

无论是Vc-HS还是Pt-HS都显著降低了番茄植物的疾病严重程度.
HS治疗激活了关键的SA相关防御基因,包括NPR1,PR1,PR2和PR5.
泥衍生的HS (Pt) 与泥衍生的HS (Vc) 相比,提供了更好的保护和防御基因诱导.
在病原体感染下,HS增强了防御基因表达和酶活性,比在未感染的植物中更显著.

结论:

在HS的结构差异影响植物对病原体的防御反应.
HS,特别是来自泥炭的,在增强植物免疫力和减少疾病严重程度方面是有效的.
绿色化工是一种有希望的可持续战略,可以改善农业中的植物防御机制,减少对农业化学品的依赖.

关键词:

生物刺激剂生物刺激剂激素激素激素激素激素诱导的阻力诱导的阻力

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