title: Ribose operon repressor (RbsR) contributes to the adhesion of Aeromonas hydrophila to Anguilla japonica mucus.
abstract: The characterization of adhesion between pathogenic bacteria and the host is critical. Pathogenic Aeromonas hydrophila was shown to adhere in vitro to the mucus of Anguilla japonica. To further investigate the adhesion mechanisms of A. hydrophila, a mini-Tn10 transposon mutagenesis system was used to generate an insertion mutant library by cell conjugation. Seven mutants that were impaired in adhesion to mucus were selected out of 332 individual colonies, and mutant M196 was the most severely impaired strain. National Center for Biotechnology Information (NCBI) blast analysis showed that mutant M196 was inserted by mini-Tn10 with an ORF of approximately 1,005 bp (GenBank accession numbers KP280172). This ORF is predicted to encode a protein consist of 334 amino acid, which displays the highest identity (98%) with the RbsR of A. hydrophila ATCC 7966. Random inactivation of rbsR gene affected the pleiotropic phenotypes of A. hydrophila. The adhesion ability and the survival level of the rbsR gene mutant (M196) were attenuated compared with the wild-type and rbsR complementary type. The findings of this study indicated that RbsR plays roles in the bacterial adhesion and intracellular survival of A. hydrophila.
authors.affiliation: State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China.|Key Laboratory of Healthy Mariculture for the East China Sea, Fisheries College, Ministry of Agriculture, Jimei University, Xiamen, Fujian, China.
authors.forename: Guifang
authors.initials: G
authors.lastname: Lin
authors.affiliation: Key Laboratory of Healthy Mariculture for the East China Sea, Fisheries College, Ministry of Agriculture, Jimei University, Xiamen, Fujian, China.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Chen
authors.affiliation: College of Ocean & Earth Sciences, Xiamen University, Xiamen, Fujian, China.
authors.forename: Yongquan
authors.initials: Y
authors.lastname: Su
authors.affiliation: Key Laboratory of Healthy Mariculture for the East China Sea, Fisheries College, Ministry of Agriculture, Jimei University, Xiamen, Fujian, China.
authors.forename: Yingxue
authors.initials: Y
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China.|Key Laboratory of Healthy Mariculture for the East China Sea, Fisheries College, Ministry of Agriculture, Jimei University, Xiamen, Fujian, China.
authors.forename: Lixing
authors.initials: L
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Large Yellow Croaker Breeding, Ningde, Fujian, China.|Key Laboratory of Healthy Mariculture for the East China Sea, Fisheries College, Ministry of Agriculture, Jimei University, Xiamen, Fujian, China.
authors.forename: Qingpi
authors.identifier: 0000-0001-8698-3121
authors.initials: Q
authors.lastname: Yan
mesh_terms: D016980:Aeromonas hydrophila / Q000235:genetics / Q000502:physiology*; D000811:Anguilla / Q000378:metabolism / Q000382:microbiology*; D000818:Animals; D001422:Bacterial Adhesion; D053898:Biosynthetic Pathways / Q000235:genetics; D004251:DNA Transposable Elements; D050296:Microbial Viability; D009093:Mucus / Q000378:metabolism / Q000382:microbiology*; D016254:Mutagenesis, Insertional; D009876:Operon; D012097:Repressor Proteins / Q000378:metabolism*; D012266:Ribose / Q000096:biosynthesis*
chemical_list: D004251:DNA Transposable Elements; D012097:Repressor Proteins; D012266:Ribose
keywords: 
  A. hydrophila
  ; 
  rbsR
  ; Mini-Tn10Km; adhesion; intracellular survival