Complete genome sequence provides information on quorum sensing related spoilage and virulence of Aeromonas salmonicida GMT3 isolated from spoiled sturgeon
文献类型： 外文期刊
作者： Liu, Lei 2 ; Li, Jun 1 ; Tu, Mingxia 4 ; Gao, Liang 1 ; Zhang, Ying 1 ; Rao, Yu 4 ; Rao, Lei 5 ; Gui, Meng 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Natl Engn Res Ctr Freshwaters Beijing, Beijing 100068, Peoples R China
2.Lanzhou Univ, Chinese Acad Agr Sci, Coll Vet Med, Lanzhou Vet Res Inst,State Key Lab Vet Etiol Biol, Lanzhou 730000, Peoples R China
3.China Natl Ctr Food Safety Risk Assessment, Beijing 100022, Peoples R China
4.Xihua Univ, Sch Food Sci & Bioengn, Food Microbiol Key Lab Sichuan Prov, Chengdu 610039, Peoples R China
5.China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100083, Peoples R China
6.Lanzhou Univ, 222 South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China
7.37 Guangqu Rd, Beijing 100022, Peoples R China
关键词： Whole genome sequencing; Quorum sensing; Spoilage; Virulence; Aquatic products safety
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.0； 五年影响因子：8.5 ）
ISSN： 0963-9969
年卷期： 2024 年 196 卷
页码：
收录情况： SCI
摘要： Foodborne bacteria can pose a threat to the public health due to their spoilage and virulence potential, which can be regulated by quorum sensing (QS) system. In the study, we isolated a spoilage bacteria strain Aeromonas salmonicida GMT3 from refrigerated sturgeon. The complete genome of A. salmonicida GMT3 was sequenced, and the QS related genes were assigned. QS signal molecules N-acyl-homoserine lactones (AHLs) and AI-2 were detected. Genes regulating the spoilage-related metabolic pathways, including protease and lipase secretion, amines metabolism, sulfur metabolism, motility and biofilm formation were analyzed. Furthermore, genes encoding for several virulence factors, e.g. hemolysin, aerolysin, type II secretion system (T2SS), type VI secretion system (T6SS), antibiotic and multidrug resistance were also identified. In addition, the spoilage and virulence phenotypes associated with QS including protease, swimming and swarming activity, biofilm and hemolytic activity were detected. This study provided new insights into spoilage and virulence mechanisms correlated with QS of A. salmonicida GMT3, which might promote development of new approaches for spoilage and virulence control based on QS target.
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