通过在叶子上涂抹 Askorbic 酸来改善葡萄树根茎和品种中的盐应激耐受性
Fatemeh Pileh1, Ali Ebadi2, Zabihollah Zamani1
1Department of Horticulture Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, 31587, Iran.
Scientific reports
|November 25, 2025
概括
亚酸 (AA) 应用通过改善根茎和品种的弹性来减轻葡萄树中的盐应激 (SS). 这项研究发现,AA增强了耐药根茎中兼容的奥斯莫利特合成,并改善了SS下的敏感品种的特征.
科学领域:
- 植物科学 植物科学
- 农业科学 农业科学
- 生物化学 生物化学
背景情况:
- 盐应激 (SS) 是一种主要的非生物应激,限制了全世界的果树生产力.
- 制定提高植物对SS的抗性战略对于可持续农业至关重要.
- 葡萄藤 (Vitis vinifera L.) 在经济上很重要,但对盐度敏感.
研究的目的:
- 为了研究 Askorbic 酸 (AA) 在不同的盐应激水平下对葡萄藤根茎和品种的影响.
- 评估AA在减轻SS引起的生理和生化特征损伤方面的有效性.
- 为了区分特定根茎 (140Ruggeri,1103Paulsen) 和品种 (Yaghouti,Sultana) 对SS和AA治疗的反应.
主要方法:
- 用三种盐度水平 (0,25,50毫米NaCl) 和四种AA度 (0,2,4,6毫米) 的实验.
- 评估根,芽和叶的特征,光合作用色素,相对含水量 (RWC),电解质泄漏 (EL).
- 适合性溶体的量化:可溶性碳水化合物总量,素和糖氨酸贝他因.
- 使用多变量分析来区分治疗效果.
主要成果:
- 根系1103Paulsen (Pa) 和140Ruggeri (Ru) 对SS的耐受性更高,表现出形态和色素特征的减少较小,并且具有更高的溶酶合成.
- 苏尔塔纳 (苏) 品种对SS最敏感,RWC,色素和奥斯莫利特水平显著降低.
- 亚酸 (AA) 的应用有效地缓解了SS,最佳度因根茎/种植物反应而异.
- AA (6 mM) 增强了Pa和Ru的解质合成,同时改善了形态特征,并在SS下减少了Su中的EL.
结论:
- 酸 (AA) 的叶子应用是减轻葡萄树盐应激 (SS) 的有希望的策略.
- 根茎的选择显著影响葡萄藤对SS和AA治疗的反应.
- 观察到的不同反应突出显示了在葡萄种植中量身定制的SS管理策略的潜力.
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