RRC ID 66600
Author Jiang Z, Duan Y, Yang X, Yao B, Zeng T, Wang X, Feng Q, Qi M, Yang Q, Zhang X.
Title Nitratireductor alexandrii sp. nov., from phycosphere microbiota of toxic marine dinoflagellate Alexandrium tamarense.
Journal Int J Syst Evol Microbiol
Abstract A taxonomic study was carried out on a novel algae-associated bacterial strain Z3-1T, which was isolated from phycosphere microbiota of toxic marine dinoflagellate Alexandrium tamarense 880. Cells of strain Z3-1T were Gram-stain-negative, rod-shaped and strictly aerobic and were motile by means of flagella. Strain Z3-1T grew at 25-42 °C, pH 5.0-10.0 and 1.0-5.0 % (w/v) NaCl. Strain Z3-1T reduced nitrate to nitrite, but did not reduce nitrite to nitrogen gas. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain Z3-1T belongs to the genus Nitratireductor showing the highest sequence similarity (97.0 %) to Nitratireductor basaltis JCM 14935T. The average nucleotide identity and digital DNA-DNA hybridization relatedness between strain Z3-1T and type strains of genus Nitratireductor with available genome sequences were in the ranges of 72.4-74.4 % and 22.7-23.3 %, respectively. The major fatty acids were summed in feature 8 (C18:1ω7c and/or C18:1ω6c), C19:0ω8c cyclo, C18:1ω7c 11-metyl and iso-C17:0. The major polar lipids were determined as diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, two unidentified phospholipids and four unidentified polar lipids. The genomic DNA G+C content calculated from genome sequence was 65.6 mol%. Based on genotypic, chemotaxonomic and phenotypic data obtained, strain Z3-1T represents a novel species of the genus Nitratireductor, for which the name Nitratireductor alexandrii sp. nov. is proposed with the type strain Z3-1T (=KCTC 62458T=CCTCC AB 2017227T).
Volume 70(7)
Pages 4390-4397
Published 2020-7-1
DOI 10.1099/ijsem.0.004302
PMID 32589575
MeSH Bacterial Typing Techniques Base Composition DNA, Bacterial / genetics Dinoflagellida / microbiology* Fatty Acids / chemistry Microbiota Nucleic Acid Hybridization Phospholipids / chemistry Phyllobacteriaceae / classification* Phyllobacteriaceae / isolation & purification Phylogeny* RNA, Ribosomal, 16S / genetics Sequence Analysis, DNA
Resource
General Microbes JCM14935 JCM17288 JCM21793 JCM14851