Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan.

Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan. Research Abstract Details 

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Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan. Abstract Text:

Dalal Asker,Teruhiko Beppu,Kenji Ueda,Dalal Asker,Teruhiko Beppu,Kenji Ueda,

A red-pigmented, Gram-negative, motile, strictly aerobic, mesophilic, oval- or short rod-shaped bacterium (TDMA-17(T)) was isolated from fresh water collected at Misasa, a radioactive site in Japan. TDMA-17(T) was slightly tolerant against gamma-ray irradiation, and effectively produced carotenoids (2.8 mg g(-1) dry cells) including, astaxanthin and astaxanthin isomers. Phylogenetic analysis based on 16S rRNA gene sequences placed TDMA-17(T) in a distinct lineage in the family Sphingomonadaceae, and the highest degree of sequence similarity determined were to Sphingomonas aerolata NW12(T) (94.5%), Sphingomonas aurantiaca MA101b(T) (94.0%), Sphingomonas melonis DAPP-PG 224(T) (94.0%), Sphingomonas asaccharolytica IFO 15499(T) (93.9%) and Sphingomonas abaci C42(T) (93.9%). The major fatty acids were C(17 : 1)omega6c (33.0%) and C(18 : 1)omega7c (20.8%). The DNA G+C content was 67.7 mol%. The presence of Q-10 as the main ubiquinone, the presence of Sphingomonadaceae-specific sphingoglycolipid in the polar lipid profiles, the presence of 2-hydroxy fatty acids and the absence of 3-hydroxy fatty acids supported the identification of this strain as a member of the genus Sphingomonas sensu stricto. Phylogenetic distinctiveness and unique phenotypic characteristics differentiated strain TDMA-17(T) from the closely related Sphingomonas species. The results of polyphasic taxonomic analyses suggested that TDMA-17(T) represents a novel Sphingomonas species, for which the name Sphingomonas astaxanthinifaciens sp. nov. is proposed. The type strain is TDMA-17(T) (=NBRC 102146=CCUG 53608).

Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan. Publishing Authors By Initials

D Asker,T Beppu,K Ueda,D Asker,T Beppu,K Ueda,

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Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: FEMS microbiology letters

VOLUME: 273

Page Numbers: 140-8

Journal Abbreviation: FEMS Microbiol. Lett.

ISSN: 0378-1097

DAY: 22

MONTH: 06

YEAR: 2007

Sphingomonas astaxanthinifaciens sp. nov., a novel astaxanthin-producing bacterium of the family Sphingomonadaceae isolated from Misasa, Tottori, Japan. Information

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LANGUAGE: eng

NlmUniqueID: 7705721

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AFFILIATION: Life Science Research Center, College of Bioresource Sciences, Nihon University, Fujisawa, Japan. dasker@brs.nihon-u.ac.jp

Country: England

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MEDLINETA: FEMS Microbiol Lett

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