Bacillus subtilis B55 degraded the ferulic acid and p-coumaric acid and changed the soil bacterial community in soils.

IF 3.2 3区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Dongli Liu, Xin Ge, Dandan Pan, Xianqing Zheng, Xingang Zhou
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引用次数: 0

Abstract

Aims: This study aimed to assess the effects of phenolic acid-degrading bacteria strains on phenolic acid content, plant growth, and soil bacterial community in phenolic acid-treated soils.

Methods and results: The strain of interest coded as B55 was isolated from cucumber root litter, and its degradation rates of ferulic acid and p-coumaric acid were 81.92% and 72.41% in Luria-Bertani solution, respectively, and B55 was identified as Bacillus subtilis. B55 had plant growth-promoting attributes, including solubilization of inorganic phosphate and production of siderophore and indole acetic acid. Both ferulic acid and p-coumaric acid significantly restrained an increase in cucumber seedling dry biomass, while the B55 inoculation not only completely counteracted the damage of phenolic acids to cucumber seedlings and decreased the content of ferulic acid and p-coumaric acid in soil, but also promoted cucumber seedlings growth. Amplicon sequencing found that B55 inoculation changed the cucumber rhizosphere bacterial community structure and promoted the enrichment of certain bacteria, such as Pseudomonas, Arthrobacter, Bacillus, Flavobacterium, Streptomyces, and Comamonas.

Conclusions: B55 not only promoted cucumber seedling growth, and decreased the content of ferulic acid and p-coumaric acid in soil, but it also increased the relative abundance of beneficial microorganisms in the cucumber rhizosphere.

枯草芽孢杆菌 B55 降解了阿魏酸和对香豆酸,并改变了土壤中的细菌群落。
目的:本研究旨在评估酚酸降解菌株对酚酸处理土壤中酚酸含量、植物生长和土壤细菌群落的影响:从黄瓜根屑中分离出相关菌株(代号为 B55),其在 Luria-Bertani 溶液中对阿魏酸和对香豆酸的降解率分别为 81.92% 和 72.41%,B55 被鉴定为枯草芽孢杆菌。B55 具有促进植物生长的特性,包括溶解无机磷酸盐、产生苷元和吲哚乙酸(IAA)。阿魏酸和对香豆酸都能显著抑制黄瓜幼苗干生物量的增加,而接种 B55 不仅能完全抵消酚酸对黄瓜幼苗的伤害,降低土壤中阿魏酸和对香豆酸的含量,还能促进黄瓜幼苗的生长。扩增子测序发现,接种 B55 改变了黄瓜根瘤菌群落结构,促进了某些细菌的富集,如假单胞菌、节杆菌、芽孢杆菌、黄杆菌、链霉菌和科莫纳菌等:结论:B55 不仅能促进黄瓜幼苗生长,降低土壤中阿魏酸和对香豆酸的含量,还能提高黄瓜根圈有益微生物的相对丰度。
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来源期刊
Journal of Applied Microbiology
Journal of Applied Microbiology 生物-生物工程与应用微生物
CiteScore
7.30
自引率
2.50%
发文量
427
审稿时长
2.7 months
期刊介绍: Journal of & Letters in Applied Microbiology are two of the flagship research journals of the Society for Applied Microbiology (SfAM). For more than 75 years they have been publishing top quality research and reviews in the broad field of applied microbiology. The journals are provided to all SfAM members as well as having a global online readership totalling more than 500,000 downloads per year in more than 200 countries. Submitting authors can expect fast decision and publication times, averaging 33 days to first decision and 34 days from acceptance to online publication. There are no page charges.
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