Open AccessCarideicomes alvinocaridis gen. nov., sp. nov., a marine bacterium isolated from shrimp gill in a hydrothermal field of Okinawa Trough
Author(s) -
Yi-Ting Wang,
Lijun Liu,
Min Yu,
Shun Zhou,
Tianyu Fu,
Wentao Sun,
Rui Du,
Xiaohua Zhang
Publication year - 2020
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.003971
Subject(s) - biology , 16s ribosomal rna , strain (injury) , microbiology and biotechnology , bacteria , phylogenetic tree , gene , genetics , anatomy
A Gram-stain-negative, strictly aerobic, oval-shaped, non-motile bacterium with no flagella, designated strain SCR17 T , was isolated from a shrimp gill habitat in Tangyin hydrothermal field of Okinawa Trough. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SCR17 T formed a lineage within the family ‘ Rhodobacteraceae ’, and shared 16S rRNA gene sequence similarity of 93.2–96.2 % to the related genera Aquicoccus and Roseivivax . Strain SCR17 T was able to grow with 0–14 % (w/v) NaCl (optimum, 9–10 %). The sole respiratory quinone was ubiquinone-10. The major polar lipids of strain SCR17 T comprised phosphatidylcholine (PC), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), an unidentified aminolipid (AL), an unidentified phospholipid (PL) and an unidentified lipid (L). The predominant fatty acids (more than 10 % of the total fatty acids) were C 18 : 1 ω7 c or/and C 18 : 1 ω6 c , anteiso-C 15 : 0 , C 16 : 0 and C 19 : 0 cyclo ω 8 c . The genomic DNA G+C content of strain SCR17 T was 67.7 mol%. Based on polyphasic taxonomic analyses, strain SCR17 T is considered to represent a novel species in a new genus of the family ‘ Rhodobacteraceae ’, for which the name Carideicomes alvinocaridis gen. nov., sp. nov. is proposed. The type strain of Carideicomes alvinocaridis is SCR17 T (=JCM 33426 T =MCCC 1K03732 T ). The discovery of a novel host-associated bacterium in hydrothermal fields provides an opportunity for the study of host–bacterial symbiosis in extreme environments.