维尼 unguiculata的局部形式 - - 在植物生长阶段对透应激的反应
Lyudmila Simova-Stoilova1, Liliana Gigova1, Valentin Velinov1
1Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Block 21, 1113 Sofia, Bulgaria.
International journal of molecular sciences
|September 13, 2025
概括
牛土地品种对严重的干旱压力表现出不同的反应. 根表现出比叶子更大的代谢变化,突出显示了它们在牛豆中的作用.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 生物化学 生物化学
背景情况:
- 牛 (Vigna unguiculata) 在豆类中表现出优越的干旱耐受性.
- 牛在适应气候变化的过程中越来越重要.
- 当地的陆地品种是有价值的生殖质,可以耐受压力.
研究的目的:
- 调查保加利亚牛豆陆地品种对植物阶段严重的透应激的生理和代谢反应.
- 为了比较根和叶子之间的压力反应.
- 为了确定干旱耐受性的潜在标志物.
主要方法:
- 在16天的时间里,将5只保加利亚豆陆地种进行了严重的透应激 (15%PEG 6000).
- 评估生物质,叶面积,缺水,电解质泄漏,素,粉和含量.
- 测量总抗氧化活性和特定抗氧化酶活性 (SOD,CAT,GST,POD,GR).
主要成果:
- 所有陆地品种在压力下显示生物质和叶面积减少,proline积累增加,和碳水化合物含量改变.
- 与叶子相比,根表现出更明显的代谢变化,包括更高的抗氧化活性和proline积累.
- 叶子通过高调节的抗氧化酶 (SOD,CAT,GST,POD) 严格控制氧化应激,而谷氨还原酶活性下降.
- 在根和叶之间观察到抗氧化酶活性的基因型变异.
结论:
- 牛土地品种表现出明显的生理和代谢适应透应激.
- 根在通过代谢调整来管理压力反应中起着至关重要的作用.
- 抗氧化酶活性调节在压力下的植物器官和基因型之间存在差异.
- 牛的早期压力敏感性可能与晚些时候发展中的氧化压力症状增加有关.
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