干旱和热应激相互作用:揭示波斯核桃的分子和生理反应
Asaad Habibi1, Saadat Sarikhani1, Mohammad Mehdi Arab2
1Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran.
Plant physiology and biochemistry : PPB
|November 9, 2024
概括
干旱和热量压力严重影响了核桃生理学,联合压力会造成更多的损害. 核桃植物显示出一些恢复,但光合作用基因表达减少,表明潜在的长期损害.
科学领域:
- 植物生理学和非生物应激反应.
- 农业科学和作物弹性.
背景情况:
- 核桃植物 (cv. 钱德勒) 容易受到环境压力因素的影响.
- 有限的知识存在于干旱和热压力对核桃恢复的影响.
研究的目的:
- 调查波斯核桃对干旱和热应激的反应.
- 分析光合作用,水关系和透调节的影响.
- 评估压力后的恢复能力.
主要方法:
- 遭受干旱压力 (DS),热压力 (HS) 和联合DS+HS的核桃植物.
- 监测生理参数,包括叶绿素,水潜力和光合作用.
- 分析了光合作用成分的基因表达.
主要成果:
- 与HS相比,DS对叶绿素和水的关系产生了更大的负面影响.
- 在DS和综合性压力下,奥斯摩调节 (林,甲酸甘氨酸,碳水化合物) 增加.
- 结合的压力导致更明显的叶子损伤,减少RWC,叶绿素和光.
- 光合作用基因表达 (Fd,Cyt b6f,PsbB) 在压力下显著下降.
结论:
- 干旱和热应激的结合对核桃苗木构成高风险.
- 液压和热调节中的协同作用损害增加了损害.
- 虽然发生了一些生理恢复,但减少光合作用基因表达表明了持久的影响.
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