超性聚乙烯糖醇 (PEG-6000) 诱导的干旱压力的影响Passiflora edulisSims生理特性
Ying Qi1,2,3, Lingling Ma1,2,3, Muhammad Imran Ghani1,2,3,4
1College of Agriculture, Guizhou University, Guiyang 550025, China.
Plants (Basel, Switzerland)
|June 28, 2023
概括
暴露于聚乙烯糖醇 (PEG) 的激情果苗在干旱压力下显示出增长和叶绿素的减少,但可溶性蛋白质,烯和甲的增加. 抗氧化酶活性在六天达到峰值.
科学领域:
- 植物生理学 植物生理学
- 生物化学 生物化学
- 干旱应激反应 干旱应激反应
背景情况:
- 激情果容易受到干旱的影响,影响作物产量.
- 了解生理反应对于开发抗旱品种至关重要.
研究的目的:
- 在模拟干旱压力下调查激情果苗的生理和生化变化.
- 为抗旱的激情果种植树立理论基础.
主要方法:
- 使用聚乙烯糖醇 (PEG) 溶液 (5-20%) 模拟干旱压力.
- 测量了生长参数,叶绿素含量,根活力,可溶蛋白 (SP), (Pro), (MDA) 和抗氧化酶活动 (POD,SOD,CAT).
- 在经过九天的压力和随后的补水后,评估了变化.
主要成果:
- 干旱压力显著降低了新鲜重量,叶绿素和根源活力.
- 增加PEG度和持续时间增加了SP,Pro和MDA水平.
- 抗氧化酶活性 (POD,SOD,CAT) 在第六天达到峰值.
- 补水部分扭转了SP,Pro和MDA的积累.
结论:
- 聚乙烯甘醇 (PEG) 度为5-20%有效模拟激情果的干旱压力.
- 激情果表现出对干旱压力的生理适应,包括保护性化合物和抗氧化剂反应的积累.
- 20%的PEG治疗显示出最显著的影响,突出了敏感度值.
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