耐受性内生菌调节两个硬麦基因型的生长和田间表现,具有对比的盐度耐受性潜力
Randa Albdaiwi1, Rabea Al-Sayaydeh2, Mohammad K Al-Rifaee3
1Department of Allied Medical Sciences, Zarqa University College, Al-Balqa Applied University, Al-Salt 19117, Jordan.
Plants (Basel, Switzerland)
|May 11, 2024
概括
促进植物生长的草原细菌 (PGPR) 减轻 durum小麦的盐分压力. 接种改善了对盐敏感的基因型,突出了在盐水农业中需要基因型特定策略的需要.
科学领域:
- 农业科学 农业科学
- 植物科学 植物科学
- 微生物学 微生物学
背景情况:
- 土壤盐度是一个主要的非生物压力,限制了 durum wheat (Triticum durum) 的生产力.
- 制定提高作物弹性战略对于干旱和半干旱地区的粮食安全至关重要.
研究的目的:
- 评估耐植物生长促进根茎细菌 (PGPR) 在减轻 durum小麦基因型的盐度压力的有效性.
- 在盐水条件下研究对PGPR注射的基因型特异反应.
主要方法:
- 两种 durum小麦基因型 (对盐敏感的"Tamaroi"和对盐耐受的"Line 5004") 被用*Pseudomonas jordanii* G34和*Oceanobacillus jordanicus* GSFE11接种.
- 在两个生长季节的温室 (50 mM NaCl) 和田间条件下进行了实验.
- 测量了农业学特征,如总重量,尖峰重量,谷物重量和千粒核重量.
主要成果:
- 耐性PGPR菌株在盐度压力下显著提高了 durum小麦的生长和产量参数.
- 细菌注射显著改善了对盐敏感基因型的性能,对耐盐基因型的影响不那么明显.
- *O. jordanicus* GSFE11在不影响生长的情况下增加了对盐耐受性"5004线"的Na+和Ca2+吸收.
结论:
- 耐受性PGPR显示出在盐水环境下改善 durum小麦生产的潜力.
- 对PGPR注射的基因型特异性反应对于优化盐耐受性策略至关重要.
- 了解PGPR机制,如离子吸收调节,是开发有效作物管理实践的关键.
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