使用不同剂量的种子原料可以通过激活抗氧化系统和相关基因表达来缓解kenaf (Hibiscus cannabinus L.) 的盐应激
Renxue Li1, Dengjie Luo1, Muzammal Rehman1
1College of Agriculture, Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety; Key Laboratory of Crop Genetic Breeding and Germplasm Innovation, Guangxi University, Nanning, 530004 China.
概括
用PEG,ABA和KNO3等剂进行种子原料化显著提高了kenaf (Hibiscus cannabinus L.) 的盐耐受性. 这种方法改善了发芽,生长和生理弹性,可以应对高盐度压力.
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:
- 高盐度是一个主要的非生物压力限制全球作物生产.
- 凯纳夫 (Hibiscus cannabinus L.) 呈现出一些盐分耐受性,但其抗盐机制需要进一步阐明.
- 种子原始化是一种已知的策略,用于减轻植物中的非生物应激效应.
研究的目的:
- 研究不同原料剂和度在盐应激下对kenaf种子发芽和苗木生长的有效性.
- 为了阐明在原始化开纳夫种子中的盐耐受性背后的生理和生化机制.
- 分析种子化对参与kenaf盐应激反应途径的关键基因表达的影响.
主要方法:
- 凯纳夫种子被用四种剂 (H2O,PEG,ABA,KNO3) 在不同度的原料.
- 种子经过盐应激 (150mM NaCl),以评估农学特征和生理/生化指标.
- 对与盐应激通路相关的基因进行了基因表达分析.
主要成果:
- 确定了PEG (10%),ABA (0.5μM) 和KNO3 (0.5%) 的最佳原始度.
- 开显著提高了芽率和新鲜重量,改善了高达35.1%的情况.
- 化减轻了盐的压力效应,增强了植物的高度,茎的厚度,叶面积,光合作用,抗氧化酶活性和透溶液含量,同时减少了氧化损伤.
结论:
- 种子化是一种有效的策略,可以提高kenaf对盐应激的耐受性.
- 开封通过调节抗氧化系统和透调整来改善kenaf的农学性能和生理弹性.
- 原始化调节了关键的盐应激反应基因,有助于改善kenaf的盐度耐受性.
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