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Analysis of the complete genome sequence of Paenibacillus sp. lzh-N1 reveals its antagonistic ability

文献类型： 外文期刊

作者： Li, Ee 1 ; Liu, Kaiquan 3 ; Yang, Shuhan 1 ; Li, Ling 3 ; Ran, Kun 4 ; Sun, Xiaoli 4 ; Qu, Jie 1 ; Zhao, Li 1 ; Xin, Yuxiu 1 ; Zhu, Feng 1 ; Ma, Jingfang 1 ; Song, Feng 1 ; Li, Zhenghua 1 ;

作者机构： 1.Dezhou Univ, Inst Biophys, Shandong Key Lab Biophys, Dezhou 253023, Peoples R China

2.Dezhou Univ, Shandong Engn Lab Swine Herd Hlth Big Data & Intel, Dezhou 253023, Peoples R China

3.Qilu Univ Technol, Shandong Acad Sci, Sch Bioengn, Jinan 250353, Peoples R China

4.Shandong Inst Pomol, Tai An 271000, Peoples R China

关键词： Paenibacillus sp.; Genome sequence; Antagonistic ability; Antifungal peptides; Biofilm formation; Quorum sensing

期刊名称：BMC GENOMICS （ 影响因子：4.4； 五年影响因子：4.7 ）

ISSN： 1471-2164

年卷期： 2024 年 25 卷 1 期

页码：

收录情况： SCI

摘要： Background Plant diseases caused by pathogenic fungi are devastating. However, commonly used fungicides are harmful to the environment, and some are becoming ineffective due to fungal resistance. Therefore, eco-friendly biological methods to control pathogenic fungi are urgently needed. Results In this study, a strain, Paenibacillus sp. lzh-N1, that could inhibit the growth of the pathogenic fungus Mycosphaerella sentina (Fr) Schrorter was isolated from the rhizosphere soil of pear trees, and the complete genome sequence of the strain was obtained, annotated, and analyzed to reveal the genetic foundation of its antagonistic ability. The entire genome of this strain contained a circular chromosome of 5,641,488 bp with a GC content of 45.50%. The results of species identification show that the strain belongs to the same species as P. polymyxa Sb3-1 and P. polymyxa CJX518. Sixteen secondary metabolic biosynthetic gene clusters were predicted by antiSMASH, including those of the antifungal peptides fusaricidin B and paenilarvins. In addition, biofilm formation-related genes containing two potential gene clusters for cyclic lactone autoinducer, a gene encoding S-ribosylhomocysteine lyase (LuxS), and three genes encoding exopolysaccharide biosynthesis protein were identified. Conclusions Antifungal peptides and glucanase biosynthesized by Paenibacillus sp. lzh-N1 may be responsible for its antagonistic effect. Moreover, quorum sensing systems may influence the biocontrol activity of this strain directly or indirectly.

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