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Identification of up-regulated proteins potentially involved in the antagonism mechanism of Bacillus amyloliquefaciens G1

文献类型： 外文期刊

作者： Cao, Haipeng 1 ; Zheng, Weidong; He, Shan 1 ; Wang, Hao 1 ; Wang, Tu 1 ; Lu, Liqun 1 ;

作者机构： 1.Shanghai Ocean Univ, Minist Educ, Key Lab Explorat & Utilizat Aquat Genet Resources, Shanghai 201306, Peoples R China

2.Shanghai Ocean Univ, Natl Pathogen Collect Ctr Aquat Anim, Shanghai 201306, Peoples R China

3.Shanghai Ocean Univ, Natl Pathogen Collect Ctr Aquat Anim

关键词： Antagonism mechanism;Bacillus amyloliquefaciens;Proteomics;Up-regulated proteins

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： The use of Bacillus probiotics has been demonstrated as a promising method in the biocontrol of bacterial diseases in aquaculture. However, the molecular antibacterial mechanism of Bacillus still remains unclear. In order to explore the antibacterial mechanism of the potential antagonistic Bacillus amyloliquefaciens strain G1, comparative proteomics between B. amyloliquefaciens strain G1 and its non-antagonistic mutant strain was investigated. The 2-dimensional electrophoresis gel maps of their total extracted proteins were described and 42 different proteins were found to be highly expressed in strain G1 in comparison with those in the mutant strain. 35 of these up-regulated proteins were successfully identified using MALDI-TOF-TOF MS and databank analysis, and their biological functions were analyzed through the KEGG database. The increased expression of these proteins suggested that high levels of energy metabolism, biosynthesis and stress resistance could play important roles in strain G1's antagonism. To our knowledge, this is the first report on the proteins involved in the antagonism mechanism of B. amyloliquefaciens using a proteomic approach and the proteomic data also contribute to a better understanding of the molecular basis for the antagonism of B. amyloliquefaciens.

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