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1. Liu  Y, Lai  Q, Shao  Z,     ( 2018 )

Genome-Based Analysis Reveals the Taxonomy and Diversity of the Family Idiomarinaceae.

Frontiers in microbiology 9 (N/A)
PMID : 30364313  :   DOI  :   10.3389/fmicb.2018.02453     PMC  :   PMC6193092    
Abstract >>
Idiomarinaceae is a family of Gram-stain negative, mesophilic euryhalophiles. To provide a robust framework for the evolutionary and taxonomic relationships of bacteria of this family, we compared herein the genomes of 36 type strains and 43 non-type strains using 16S rRNA gene sequences, core genome based 78 single-copy orthologous proteins, digital DNA-DNA hybridization and average nucleotide identity (ANI) estimation. The 79 bacteria of this family were consistently divided into taxon I, taxon II, and taxon III corresponding to the three genera Idiomarina, Pseudidiomarina, and Aliidiomarina, which contained 13 putative new genospecies in addition to 35 well-defined species represented by each type strain. Furthermore, genetic diversity of this family was evident at the genus- and species levels, and exceeded that which is defined currently by the named species. In view of multiple genotypic characteristics clearly distinct from the other two genera, we propose reinstating the genus Pseudidiomarina as a monophyletic taxon. Taken together, this is the first genome-based study of the taxonomy and diversity of bacteria within the family Idiomarinaceae, and will contribute to further insights into microbial evolution and adaptation to saline environments.
KeywordMeSH Terms
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
ANI
Idiomarinaceae
dDDH
diversity
genome
taxonomy
2. Zachariah  S, Das  SK,     ( 2017 )

Idiomarina andamanensis sp. nov., an alkalitolerant bacterium isolated from Andaman Sea water.

Antonie van Leeuwenhoek 110 (12)
PMID : 28730371  :   DOI  :   10.1007/s10482-017-0908-5    
Abstract >>
Two closely related aerobic, Gram-negative rod shaped bacteria (strain W5T and W3) were isolated from Andaman Sea. Heterotrophic growth on marine agar was observed at 15-45 �XC and pH 6-10. Strain W5T showed maximum 16S rRNA sequence similarity of 99.58% with Idiomarina marina JCM 15083T. DNA fingerprinting analysis by ERIC-REP PCR, PFGE and MLSA revealed differences in banding patterns, also DNA-DNA hybridization values were well below 70% confirming W5T to be a new species. DNA G+C content was 46.7 mol%. Major fatty acids were iso-C15:0, iso-C17:0, iso-C17:1 �s9c, iso-C13:0 3OH, iso-C11:0 3OH and C16:0. Polar lipids included phosphatidylglycerol (PG) and phosphatidylethanolamine (PE) diphosphatidylglycerol (DPG) phospholipid (PL) two aminolipids (AL) and two unidentified lipids (L1-2). Q-8 is the predominant ubiquinone. On the basis of polyphasic taxonomic study, strain W5T is considered to be representative of a new species of the genus Idiomarina, for which the name Idiomarina andamanensis sp. nov. is being proposed. The type strain W5T (= LMG 29773T = JCM 31645T) was isolated from Andaman Sea.
KeywordMeSH Terms
16S rRNA sequence
Andaman Sea
DNA–DNA hybridization
ERIC-PCR
Idiomarina andamanensis sp. nov
PFGE
REP-PCR
16S rRNA sequence
Andaman Sea
DNA–DNA hybridization
ERIC-PCR
Idiomarina andamanensis sp. nov
PFGE
REP-PCR
Water Microbiology

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