RRC ID 75583
Author Yamano R, Yu J, Jiang C, Harjuno Condro Haditomo A, Mino S, Sakai Y, Sawabe T.
Title Taxonomic revision of the genus Amphritea supported by genomic and in silico chemotaxonomic analyses, and the proposal of Aliamphritea gen. nov.
Journal PLoS One
Abstract A Gram-staining-negative, aerobic bacterium, designated strain PT3T was isolated from laboratory-reared larvae of the Japanese sea cucumber Apostichopus japonicus. Phylogenetic analysis based on the 16S rRNA gene nucleotide sequences revealed that PT3T was closely related to Amphritea ceti RA1T (= KCTC 42154T = NBRC 110551T) and Amphritea spongicola MEBiC05461T (= KCCM 42943T = JCM 16668T) both with 98.3% sequence similarity, however, average nucleotide identity (ANI) and in silico DNA-DNA hybridization (in silico DDH) values among these three strains were below 95% and 70%, respectively, confirming the novelty of PT3T. Furthermore, the average amino acid identity (AAI) values of PT3T against other Amphritea species were on the reported genus delineation boundary (64-67%). Multilocus sequence analysis using four protein-coding genes (recA, mreB, rpoA, and topA) further demonstrated that PT3T, Amphritea ceti and Amphritea spongicola formed a monophyletic clade clearly separate from other members of the genus Amphritea. Three strains (PT3T, A. ceti KCTC 42154T and A. spongicola JCM 16668T) also showed higher similarities in their core genomes compared to those of the other Amphritea spp. Based on the genome-based taxonomic approach, Aliamphritea gen. nov. was proposed together with the reclassification of the genus Amphritea and Aliamphritea ceti comb. nov. (type strain RA1T = KCTC 42154T = NBRC 110551T), Aliamphritea spongicola comb. nov. (type strain MEBiC05461T = KCCM 42943T = JCM 16668T), and Aliamphritea hakodatensis sp. nov. (type strain PT3T = JCM 34607T = KCTC 82591T) were suggested.
Volume 17(8)
Pages e0271174
Published 2022-1-1
DOI 10.1371/journal.pone.0271174
PII PONE-D-21-39007
PMID 35947547
PMC PMC9365125
MeSH Bacterial Typing Techniques Base Composition DNA, Bacterial / genetics Fatty Acids* / chemistry Genomics* Nucleic Acid Hybridization Oceanospirillaceae Phospholipids / chemistry Phylogeny RNA, Ribosomal, 16S / genetics Sequence Analysis, DNA
Resource
General Microbes JCM 34607 JCM 14776 JCM 14781 JCM 14782 JCM 16668