土壤微生物组增强芝麻生长和油成分,并在盐水条件下增强土壤营养素
Dharman Sridhar1, Saleh S Alherwairini2, Sakthi Uma Devi Eswaran1
1Soil Biology and PGPR Laboratory, Department of Botany, School of Life Sciences, Periyar University, Salem, 636011, India.
Scientific reports
|August 11, 2025
概括
耐植物生长促进根茎细菌 (PGPR) 在盐水土壤中有效增强芝麻生长. 这些有益的微生物改善植物健康,油质和盐应激下土壤特性.
科学领域:
- 农业微生物学 农业微生物学
- 植物科学 植物科学
- 环境科学 环境科学
背景情况:
- 土壤盐度是一个主要的非生物压力,限制了全球的作物生产率.
- 促进植物生长的根茎细菌 (PGPR) 提供了一种可持续的方法来减轻盐度压力.
- 性PGPR可以在盐水环境中壮成长,并支持植物生长.
研究的目的:
- 从印度沿海盐土中分离和识别耐盐的PGPR.
- 评估选择的PGPR菌株在盐度下改善芝麻生长的疗效.
- 评估PGPR接种对芝麻植物生理学和土壤健康的影响.
主要方法:
- 隔离和选的性细菌的PGPR特征 (siderophore,IAA,HCN,氨,EPS,细胞酶,酸盐溶解).
- 使用16S rRNA基因测序 (Pseudomonas toyotomiensis,Bacillus subtilis,Bacillus cereus) 识别耐盐的PGPR菌株.
- 在盐土中用PGPR注射芝麻植物,并评估生长参数,代谢活动和土壤特性.
主要成果:
- 他们发现了三种耐盐的PGPR菌株:Pseudomonas toyotomiensis,Bacillus subtilis和Bacillus cereus.
- PGPR注射显著改善了芝麻植物形态,代谢活性和抗氧化能力.
- 在PGPR处理的植物中观察到提高了芝麻油质量和改善了土壤的物理化学特性.
结论:
- 耐性PGPR,包括P.toyotomiensis,B.subtilis和B.cereus,是盐水土壤的有效生物化剂.
- 这些PGPR增强芝麻生长和盐分耐受性,提供可持续的农业解决方案.
- 该研究强调了PGPR在改善盐受影响地区的作物生产率方面的潜力.
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