番茄的压力反应受到重复浸水的影响
Sonja Umićević1, Biljana Kukavica2, Ivana Maksimović3
1Institute of Genetic Resources University of Banja Luka, Banja Luka, Bosnia and Herzegovina.
Frontiers in plant science
|August 7, 2024
概括
番茄基因型GB1126通过保持烯样和氧化参数,耐受水浸压力. 这表明一种防御机制涉及增加的蛋白质和合成,与特定的化合物作为压力标志物.
科学领域:
- 植物科学 植物科学
- 压力生理学 压力生理学
- 生物化学 生物化学
背景情况:
- 浸水会诱导植物的生理和生化变化,因物种和品种而异.
- 番茄植物在浸水下表现出减少的生长,叶绿素降解和增加的氧化应激.
- 开封处理可以提高植物对浸水压力的耐受性,可能跨代.
研究的目的:
- 评估不同番茄基因型对浸水压力的敏感性.
- 评估浸水对番茄中氧化参数和化合物的影响.
- 在番茄植物中识别潜在的水浸应激耐受性的标记物.
主要方法:
- 两个本地番茄基因型 (GB1126,GB1129) 和一个参考品种 (NJ) 受到水浸压力.
- 测量包括III类过氧化酶 (POX) 活性,过氧化 (H2O2) 和马隆迪 (MDA) 含量.
- 使用UHPLC/DAD/(-) HESI-MS2.2.进行了化合物分析.
主要成果:
- 浸水增加了H2O2和MDA水平,与蛋白质和含量有积极的相关性.
- 基因型GB1126表现出在压力下保持性概况和氧化参数的卓越能力.
- POX活性与化合物正相关,这表明它在去除活性氧物种 (ROS) 中发挥了作用.
结论:
- 基因型GB1126表现出浸水耐受性,其表现为保持水果质量和管理氧化应激的能力.
- 浸水诱导了压力记忆效应,特别是在成熟的水果中.
- 确定了5-O-caffeoylquinic 酸和鲁丁作为西红中浸水应激耐受性的潜在化学标志物.
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