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从高氧化率池中产生的微藻-细菌中分离具有促进植物生长特性的细菌

Wiya L Masudi¹, Yinka Titilawo¹, Taobat A Keshinro¹

¹Institute for Environmental Biotechnology, Rhodes University (EBRU), Makhanda, South Africa.

Environmental technology

|July 19, 2023

概括

废水处理产生促进植物生长的细菌,可以减少肥料的使用. 这些细菌从微藻-细菌中分离出来,显示出增强作物生长和根部发育的潜力.

科学领域:

环境微生物学环境微生物学
农业科学农业科学
生物技术是生物技术.

背景情况:

减少对合成肥料的依赖对于可持续农业至关重要.
废水处理中的微生物成分是促进植物生长 (PGP) 细菌的潜在来源.
来自高速度藻类氧化池 (HRAOP) 的微藻-细菌 (MaB-flocs) 是微生物多样性的丰富来源.

研究的目的:

隔离和识别市政废水处理系统中MaB-的PGP细菌.
评估这些细菌菌株的PGP潜力,包括内醇和营养物质矿化能力.
评估选择的细菌分离物对植物根部发育的辅酶类活性.

主要方法:

隔离和16S rRNA基因测序用于从MaB-flocs中的细菌鉴定.
检查英多尔 (IAA) 生产和酸盐 (P), (K) 和 (Mg) 的矿化.
通过统计分析 (排名上的ANOVA) 来评估PGP潜力,并评估豆根的辅酶类活性.

主要成果:

从HRAOP MaB-flocs中分离出了12种细菌菌株.
四种菌株产生了醇,九种矿化酸盐,七种溶解酸盐和一种矿化.
产生菌的 *Aeromonas*, *Enterobacter* 和 *Arthrobacter* 菌株促进了豆偶然的根形成.

结论:

废水中衍生出来的MaB-含着多种细菌,具有显著的PGP能力.
选择的细菌菌株显示出作为生物肥料的潜力,减少了对化学肥料的需求.
已识别的PGP细菌,特别是Enterobacter* ECCN 7b,Aeromonas* ECCN 4b和Arthrobacter* ECCN 6b,可以通过辅酶类活性来增强植物生长.

关键词:

高速藻类氧化池中的藻类氧化池综合藻类池系统微藻-细菌花束微藻-细菌花束人类的基因组学.促进植物生长的细菌促进植物生长.

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