Effectiveness of Bacillus pumilus PDSLzg-1, an innovative Hydrocarbon-Degrading Bacterium conferring antifungal and plant growth-promoting function

文献类型： 外文期刊

第一作者： Li, Hongna

作者： Li, Hongna;Li, Feng;Guo, Ping;Hao, Kun;Ullah, Hidayat;Ullah, Hidayat;Qin, Xinghu

作者机构：

关键词： Antifungal; Plant hormones; Phyto-microbial remediation; Plant growth-promoting rhizobacteria

期刊名称：3 BIOTECH （ 影响因子：2.406； 五年影响因子：3.203 ）

ISSN： 2190-572X

年卷期： 2019 年 9 卷 8 期

页码：

收录情况： SCI

摘要： Genome of the hydrocarbon-degrading bacterium Bacillus pumilus PDSLzg-1 was analyzed. A group of gene clusters and pathways associated with nitrogen fixation, plant-bacterial interactions, plant growth-promoting hormone synthesis, antibiotics, secondary metabolite, and disease resistance were identified. In addition, 0.06mg/L of 3-indoleacrylic acid (IAA) and 2mg/L of gibberellin (GA) were, respectively, detected in PDSLzg-1 fermentation broth by high-performance liquid chromatography (HPLC). Up-regulated expression levels of 11 key genes related to GA and IAA biosynthesis pathways were detected after the induction of 0.2% n-hexadecane. Furthermore, bioassays showed that PDSLzg-1 fermentation could significantly promote the length and biomass of the stems and roots of Triticum aestivum L., while inhibited Colletotrichum truncatum colonization. Results indicated that B. pumilus PDSLzg-1 had plant growth-promoting and antifungal functions, besides its potential applications in phyto-microbial bioremediation combinations for oil-contaminated soil.

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