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硫化通过调节素酸信号通路,增强了果对软腐烂的抵抗力

Tenghuan Huang¹, Bing Duan¹, Xiaoxia Zuo¹

¹College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China.

Plant physiology and biochemistry : PPB

|July 2, 2024

概括

硫化 (H2S) 烟雾化通过提高素酸 (JA) 水平来增强果对软腐烂的抵抗力. 这种治疗提高了JA通路基因和与防御相关的基因的调节,抑制了疾病的发展.

科学领域:

植物生理学植物生理学
收获后生物学收获后生物学
生物化学生化学

背景情况:

硫化 (H2S) 是植物中重要的气体信号分子.
在收获后的储存过程中,H2S会影响水果和蔬菜中的生理过程.
由Botryosphaeria dothidea引起的软腐烂是影响果质量的重要收获后疾病.

研究的目的:

调查H2S烟雾对提高果对B. dothidea软腐烂的抵抗性的影响.
阐明素酸 (JA) 信号通路在H2S介导的疾病耐药性中的参与.
评估H2S对果质量参数的影响,如度和可溶性固体含量 (SSC).

主要方法:

基维果被使用20μLL L-1 H2S.烟雾化.
在储存期间评估了疾病发生率,坚固度和SSC.
用qPCR对JA生物合成,信号通路和与防御相关的基因进行了基因表达分析.
测量了内源性JA含量.
在JA含量和基因表达之间进行了相关性分析.

主要成果:

H2S烟雾化显著降低了果中B. dothidea软腐烂的发生率.
H2S治疗延迟了果坚硬度的丧失和SSC的增加.
H2S增加了参与JA生物合成和信号传递的基因的转录水平.
通过H2S治疗,JA积累和与防御相关基因的表达得到了促进.
JA含量与JA生物合成和防御基因的表达有正相关性.

结论:

H2S通过调节JA信号通路来增强收获后果对软腐烂的抵抗力.
H2S治疗促进了内源JA积累和与防御相关基因的表达.
通过H2S对JA通路基因的上调有助于抑制果中的软腐烂.

关键词:

植物菌 (Botryosphaeria dothidea) 是一个类型.硫化是一种硫化.雅斯蒙酸信号传递果 (Kiwi) 是一种果.软软的腐烂是一种软的腐烂.

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