Epidemiological characteristics of Streptococcus agalactiae in tilapia in China from 2006 to 2020
文献类型： 外文期刊
作者： Zhang, Defeng 1 ; Liu, Zhigang 1 ; Ren, Yan 1 ; Wang, Yinggang 2 ; Pan, Houjun 1 ; Liang, Dingwu 4 ; Bei, Weilie 2 ; Chang, Ouqin 1 ; Wang, Qing 1 ; Shi, Cunbin 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Fishery Drug Dev, Key Lab Aquat Anim Immune Technol,Minist Agr & Ru, Guangzhou 510380, Guangdong, Peoples R China
2.China Blue Sustainabil Inst, Haikou 570203, Hainan, Peoples R China
3.Hainan Tilapia Sustainabil Alliance, Haikou 570203, Hainan, Peoples R China
4.Hainan YuPu Biotechnol Co Ltd, Haikou 571135, Hainan, Peoples R China
关键词： Streptococcus agalactiae; Tilapia; Genotype; Molecular serotype; Virulence-related gene
期刊名称：AQUACULTURE （ 影响因子：5.135； 五年影响因子：5.125 ）
ISSN： 0044-8486
年卷期： 2022 年 549 卷
页码：
收录情况： SCI
摘要： Group B Streptococcus (GBS) is the major causative pathogen of streptococcosis in tilapia, leading to a massive economic loss in the aquaculture industry worldwide. To date, the epidemiological characterization of tilapia GBS in China remains limited. Thus, the aim of this study was to determine the phenotype and genotype of GBS strains in tilapia in China from 2006 to 2020. A total of 678 GBS strains were isolated from farmed tilapia in the past decade. The CAMP reaction of GBS strains was investigated, and the cfb gene of the CAMP negative strains was sequenced and analysed. The genotypic distribution of these strains was determined by molecular serotyping, multi-locus sequence typing (MLST), virulence genotyping, and prophage genotyping. All GBS strains were divided into two serotypes (Ia and Ib), two sequence types (STs; ST7 and ST261), five virulence genotypes (V1-V5), and three prophage genotypes (P1-P3). A total of six genotypes (I-VI) were obtained based on serotyping, MLST, virulence genotyping, and prophage genotyping. Among them, strains in genotypes I, II, III, and IV were primarily prevalent from 2006 to 2015, and those in genotypes V and VI were the dominant epidemic strains from 2012 to 2020. Moreover, genotype VI strains showed a substantial population explosion from 2011 to 2020 and were mainly distributed in the geographically proximate provinces of Guangdong, Guangxi, Hainan, and Fujian. This is first report of tilapia Ia-GBS CAMP negative strains, and the strains were probably from the same hatchery. Genetic diversity in tilapia GBS strains has been high in China over the past decade, especially from 2010 to 2015. The genotypes of the tilapia GBS strains underwent obvious variation, and the prevalent strains in recent years have harboured more virulence-related genes. This study provides a better understanding of the epidemiology, pathogenesis, and evolutionary mechanism of tilapia GBS strains.
- 相关文献
作者其他论文 更多>>
-
A multiple-population study reveals genetic variation and genes associated with resistance to Streptococcus agalactiae in Nile tilapia (Oreochromis niloticus)
作者：Wang, Zhang;Liu, Zhigang;Huang, Shaowei;Zhu, Weijuan;Cao, Jianmeng;Wang, Miao;Yi, Mengmeng;Lu, Maixin;Ke, Xiaoli;Liu, Zhigang;Huang, Shaowei;Zhu, Weijuan;Lu, Maixin;Ke, Xiaoli
关键词：Tilapia; Streptococcus agalactiae; GWAS; Selective sweep analysis; SNP marker
-
Inactivated LMBV vaccine with nano-aluminum - aluminum adjuvant provided immune protection in largemouth bass ( Micropterus Salmoides) )
作者：Luo, Xia;Ma, Baofu;Chang, Ouqin;Fu, Xiaozhe;Liang, Hongru;Niu, Yinjie;Lin, Qiang;Liu, Lihui;Li, Ningqiu;Wang, Ruoxuan;Lv, Aijun
关键词：Largemouth bass; LMBV; Inactivated vaccine; Nano-aluminum adjuvant; Potentiation effects
-
Cyprinid herpesvirus 3 replication is inhibited via decreased ORF3 promoter activity mediated by multiple cellular transcription factors
作者：Liu, Donghai;Wang, Yingying;Li, Yingying;Mo, Xubing;Yin, Jiyuan;Wang, Qing;Zheng, Shucheng;Liu, Donghai
关键词：Cyprinid herpesvirus 3; Koi herpesvirus; ORF3; Promoter; Transcription factors
-
Enhanced virulence of Acinetobacter johnsonii at low temperatures induces acute immune response and systemic infection in American bullfrogs (Aquarana catesbeiana)
作者：Lin, Han;Sun, Jingyang;Li, Hua;Chen, Kesong;Qin, Zhendong;Jiang, Biao;Li, Wei;Su, Youlu;Lin, Li;Liu, Chun;Wang, Qing;Wang, Qing
关键词：Cold stress; Virulence genes; Amphibian disease; Immune response; Systemic infection
-
Methyltransferase HsdM Regulates the Pathogenicity of Streptococcus agalactiae to Nile Tilapia (Oreochromis niloticus)
作者：Jiang, Dongdong;Yu, Meiling;Jiang, Dongdong;Wang, Bei;Jiang, Dongdong;Ren, Yan;Mo, Xubing;Zhang, Defeng
关键词：
Streptococcus agalactiae ; DNA methyltransferase; adhesion; pathogenesis; growth rate; Nile tilapia -
Designing and evaluating a novel blood-brain barrier in vitro model of teleost for reproducing alterations in brain infecting
作者：Chen, Yanghui;Li, Yi;Li, Wenze;Huang, Yu;Cai, Jia;Jian, Jichang;Wang, Bei;Chen, Yanghui;Li, Yi;Li, Wenze;Huang, Yu;Cai, Jia;Jian, Jichang;Wang, Bei;Li, Yuan;Zhang, Defeng;Wangkahart, Eakapol
关键词：Meningitis; Blood-brain barrier; In vitro model; Endothelial cells; Astrocytes
-
Chromosome-level genome assembly of Jaguar guapote (Parachromis manguensis) by massive parallel sequencing
作者：Cao, Jianmeng;Chen, Huizi;Liu, Zhigang;Tong, Yannan;Xiao, Zhigang
关键词：
