甲基斯酸盐通过改变ROS恒常性和增强烯胺生物合成来提高易受的红色美味果的耐药性
Pratibha Demiwal1, Sajad Un Nabi2, Javid Iqbal Mir2
1Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India.
Plant physiology and biochemistry : PPB
|January 25, 2024
概括
甲基斯酸盐 (MeJA) 通过保护果 (Malus domestica) 免受氧化损伤并增强防御通路,增强果 (Malus domestica) 的皮耐受性. 这种植物激素的应用可以改善植物健康,防止Venturia inaequalis (VI) 感染.
科学领域:
- 植物病理学 植物病理学
- 园艺科学 园艺科学
- 植物生理学 植物生理学
背景情况:
- 果 (Malus domestica) 产量受到病的严重影响,这种疾病是由菌Venturia inaequalis (VI) 引起的.
- 植物激素甲基斯酸盐 (MeJA) 已知可以诱导对各种病原体的抗性.
研究的目的:
- 研究外源MeJA在提高易受果品种皮耐受性的作用.
- 阐明MeJA诱导的抗 Venturia inaequalis 的生理和生化机制.
主要方法:
- 在VI感染之前,将MeJA的优化度 (100μM) 外源应用到果叶上.
- 评估膜稳定性,甲水平,抗氧化酶活性,活性氧物种 (ROS) 水平,氨酸氨基酶 (PAL) 活性和甲积累.
主要成果:
- 应用MeJA增加了膜稳定性,并降低了"红色美味"果中的马隆迪阿尔海德水平,表明对氧化损伤的保护.
- 外源MeJA的应用有助于维持活性氧物种 (ROS) 稳态,并调节关键抗氧化酶的活性.
- 在MeJA治疗的VI感染植物中观察到氨氨酸氨基酶 (PAL) 活性增加和氨积累,这表明该途径的重编程.
结论:
- 外源MeJA应用有效地促进易受果品种皮耐受性.
- 通过增强膜稳定性,控制氧化应激和调节烯胺生物合成,MeJA提供保护.
- 这项研究为MeJA诱导的植物防御抗果的生理和生化机制提供了新的见解.
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