产生 Melatonin 的 Bacillus aerius EH2-5 通过生理,生化和分子调节增强植物的盐分耐受性
Eun-Hae Kwon1,2, Suhaib Ahmad2,3, In-Jung Lee1
1Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea.
International journal of molecular sciences
|August 28, 2025
概括
产生 Melatonin 的 Bacillus aerius EH2-5 增强了大豆在盐度压力下的生长和弹性. 这种微生物作为一种植物益生菌, 为提高作物产量和质量提供一种可持续的替代品.
科学领域:
- 微生物学与植物科学
- 环境科学与农业
背景情况:
- 气候变化加剧了土壤化和极端天气, 威胁全球粮食安全.
- 全球人口增加需要在2050年之前增加70%的粮食产量.
- 需要可持续的农业解决方案来减轻环境影响并提高作物弹性.
研究的目的:
- 评估Bacillus aerius EH2-5的植物生长促进 (PGP) 特性和黑素的产生.
- 评估EH2-5在减轻大豆盐度压力的有效性.
- 确定涉及PGP和EH2-5中的应激耐受性的关键基因.
主要方法:
- 用Bacillus aerius EH2-5接种大豆幼苗,并对其施加100mM和150mM的NaCl压力.
- 测量了植物生长参数,基因表达 (与盐度相关,ABA生物合成,转录因子) 和抗氧化酶活性.
- 进行了EH2-5的全基因组测序以确定相关基因.
主要成果:
- 在盐度压力下,Bacillus aerius EH2-5显著改善了大豆生长,生物量和光合作用.
- EH2-5注射降低了氧化应激标志物 (MDA,H2O2) 和增强了抗氧化酶活性.
- 基因组测序揭示了EH2-5中//转运,基生物合成和应激反应的基因.
结论:
- 菌EH2-5作为有效的生物肥料和大豆盐分压力的强大缓解剂.
- 这种微生物通过与外源性黑素应用相似的机制增强了植物的耐受性.
- 像EH2-5这样的产生 Melatonin的微生物代表了可持续农业的有希望的,环保的替代品.
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