Journal of Microbiology

Akira Yokota

2 Articles

Sphingomonas jejuensis sp. nov., Isolated from Marine Sponge Hymeniacidon flavia: Sanghwa Park , Akira Yokota , Takashi Itoh , Jin-Sook Park; J. Microbiol. 2011;49(2):238-242. Published online May 3, 2011; DOI: https://doi.org/10.1007/s12275-011-0500-z

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A Gram-negative, non-motile, rod shaped, and orange-pigmented chemoheterotrophic bacterium, strain MS-31T was isolated from the marine sponge Hymeniacidon flavia, collected from near Jeju Island, Korea. The Strain MS-31T was subjected to a polyphasic taxonomic study. The phylogenetic analysis based on the 16S rRNA gene sequences revealed that the novel isolate could be affiliated within the genus Sphingomonas. The strain MS-31T showed 95.6% of 16S rRNA gene sequence similarity with the most closely related species Sphingomonas koreensis JSS26T. The DNA G+C content of the strain MS-31T was 69.4 mol%. The major isoprenoid quinone was ubiqunone 10 and predominant cellular fatty acids were summed feature 7 (comprising C18:1 ω7c, C18:1 ω9t and/or C18:1 ω12t, 39.7%), C16:0 (16.3%), C14:0 2OH (15.9%) and summed feature 3 (comprising C16:1 ω7c and/or C15:0 iso 2OH, 11.7%). The polar lipids were sphingoglycolipid, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and unidentified glycolipid. Based on the evidence from the polyphasic taxonomic study, the strain should be classified as a new species of the genus Sphingomonas. As a result, the name Sphingomonas jejuensis sp. nov. (type strain MS-31T =KCTC 23321T =NBRC 107775T) is proposed.

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Oceanicoccus sagamiensis gen. nov., sp. nov., a Gammaproteobacterium Isolated from Sea Water of Sagami Bay in Japan: Sanghwa Park , Kazuhiro Kogure , Akira Yokota; J. Microbiol. 2011;49(2):233-237. Published online May 3, 2011; DOI: https://doi.org/10.1007/s12275-011-0368-y

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Abstract PDF

A gram-negative, motile, coccoid- and amorphous-shaped, non-pigmented chemoheterotrophic bacterium, designated strain PZ-5T, was isolated from sea water of Sagami Bay in Japan and subjected to a polyphasic taxonomic study. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the novel isolate could be affiliated with the class Gammaproteobacteria. Strain PZ-5T showed below 93.9% similarity with validly published bacteria and demonstrated the highest sequence similarity to Dasania marina KOPRI 20902T (93.9%). Strain PZ-5T formed a monophyletic group with D. marina KOPRI 20902T. The DNA G+C content of strain PZ-5T was 49.8 mol%. The major isoprenoid quinone was Q-8 and redominant cellular fatty acids were C15:0 ISO 2OH (19%), C16:1 ω7c (17.4%), C17:1 ω8c (16.2%), C11:0 3OH (7.5%), and C15:1 ω8c (6.5%). Based on evidence from a polyphasic taxonomical study, it was concluded that the strain should be classified as representing a new genus and species of the class Gammaproteobacteria, for which the name Oceanicoccus sagamiensis gen. nov., sp. nov., (type strain PZ-5T =NBRC 107125T =KCTC 23278T) is proposed.

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Halioglobus japonicus gen. nov., sp. nov. and Halioglobus pacificus sp. nov., members of the class Gammaproteobacteria isolated from seawater
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International Journal of Systematic and Evolutionary Microbiology.2012; 62(Pt_8): 1784. CrossRef

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