从Salicornia fruticosa根层中对潜在的耐受性酸盐溶解细菌的表征和评估
E A P Teles1, J F Xavier1, F S Arcênio1
1Laboratory of Molecular Genetics of Microorganisms, Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropedica, Brazil.
Frontiers in plant science
|January 31, 2024
概括
从盐土中分离出来的酸盐溶解细菌 (PSB) 可以增强植物的可用性. 这些耐药细菌显示出作为生物肥料的巨大潜力,可以在具有挑战性的农业环境中提高作物产量.
科学领域:
- 微生物学 微生物学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 土壤化和低 (P) 可用性是主要的非生物压力,限制了全球的农业生产力.
- 大约95-99%的土壤是植物无法获得的,需要P料.
- 酸盐溶解细菌 (PSB) 可以将不溶性酸盐转化为植物可用的形式,减少对化学肥料的依赖.
研究的目的:
- 在盐水土中识别和表征来自 Salicornia fruticosa 根球的耐性细菌.
- 为了评估这些细菌分离物的P溶解能力.
- 评估这些细菌作为可持续农业的生物投入的潜力.
主要方法:
- 从Salicornia fruticosa rhizosphere中分离出了29种细菌菌株.
- 16S rDNA基因测序用于细菌鉴定.
- 在不同的NaCl度 (0.5%30%) 评估了细菌生长.
- 用酸和酸在NBRIP介质中使用3%NaCl的酸和酸来评估酸盐溶解度.
主要成果:
- 所有确定的菌株都属于耐药的品种,包括Bacillus,Enterobacter,Halomonas,Kushneria,Oceanobacillus,Pantoea,Pseudomonas和Staphylococcus. 这些菌株包括Bacillus,Enterobacter,Halomonas,Kushneria,Oceanobacillus,Pantoea,Pseudomonas和Staphylococcus.
- 库什尼利亚公司 (Kushneria Sp. (SS102) 和 Enterobacter sp. 这两种细菌. (SS186) 显示了酸的最高P溶解度 (分别为989.53和956.37毫克·Kg-1).
- 巴西勒斯种类 (Bacillus sp.) 的存在 (SS89) 和海洋菌种. (SS94) 在溶解酸方面最有效 (分别为61.10和45.82毫克·Kg-1).
结论:
- 从盐水环境中分离出来的耐受性PSB体现出显著的P溶解能力.
- 这些细菌,特别是Kushneria sp.,Enterobacter sp.,Bacillus sp.和Oceanobacillus sp.,对于开发微生物生物输入具有前景.
- 建议对有机酸生产和多种酸源进行进一步的研究,以便在可持续农业中全面应用.
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