Identification and genomic analysis of antifungal property of a tomato root endophyte Pseudomonas sp p21

文献类型： 外文期刊

第一作者： Ma, Rongqin

作者： Ma, Rongqin;Cheng, Zhiqiang;Lei, Shaonan;Li, Xin;Tian, Baoyu;Ma, Rongqin;Cheng, Zhiqiang;Lei, Shaonan;Li, Xin;Tian, Baoyu;Cao, Yi;Huang, Wei;Song, Yongkang

作者机构：

关键词： Pseudomonas;Antifungal activity;Genomic analysis;Siderophore pyoverdine;Microbe-pathogen-plant interaction

期刊名称：ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY （ 影响因子：2.271； 五年影响因子：2.707 ）

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收录情况： SCI

摘要： Pseudomonas sp., which occupy a variety of ecological niches, have been widely studied for their versatile metabolic capacity to promote plant growth, suppress microbial pathogens, and induce systemic resistance in plants. In this study, a Pseudomonas sp. strain p21, which was isolated from tomato root endophytes, was identified as having antagonism against Aspergillus niger. Further analysis showed that this strain had the ability to biosynthesise siderophores and was less effective in inhibiting the growth of A. niger with the supplementation of Fe3+ in the agar medium. Genomic sequencing and the secondary metabolite cluster analysis demonstrated that Pseudomonas sp. p21 harboured 2 pyoverdine biosynthetic gene clusters, which encode compounds with predicted core structures and two variable tetra-peptide or eleven-peptide chains. The results indicated that siderophore-mediated competition for iron might be an important mechanism in Pseudomonas suppression of the fungal pathogen A. niger and in microbe-pathogen-plant interactions.

分类号： Q1

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