Salipiger mucescens gen. nov., sp. nov., a moderately halophilic, exopolysaccharide-producing bacterium isolated from hypersaline soil, belonging to the alpha-Proteobacteria

International Journal of Systematic and Evolutionary Microbiology
M José Martínez-CánovasVictoria Béjar

Abstract

Salipiger mucescens gen. nov., sp. nov. is a moderately halophilic, exopolysaccharide-producing, Gram-negative rod isolated from a hypersaline habitat in Murcia in south-eastern Spain. The bacterium is chemoheterotrophic and strictly aerobic (i.e. unable to grow under anaerobic conditions either by fermentation or by nitrate or fumarate respiration). It does not synthesize bacteriochlorophyll a. Catalase and phosphatase are positive. It does not produce acids from carbohydrates. It cannot grow with carbohydrates or amino acids as sole sources of carbon and energy. It grows best at 9-10 % w/v NaCl and requires the presence of Na+ but not Mg2+ or K+, although they do stimulate its growth somewhat when present. Its major fatty-acid component is 18 : 1omega7c (78.0 %). The predominant respiratory lipoquinone found in strain A3T is ubiquinone with ten isoprene units. The G + C content is 64.5 mol%. Phylogenetic analyses strongly indicate that this strain forms a distinct line within a clade containing the genus Roseivivax in the subclass alpha-Proteobacteria. The similarity value with Roseivivax halodurans and Roseivivax halotolerans is 94 %. In the light of the polyphasic evidence gathered in this study it is proposed that the isol...Continue Reading

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Citations

Oct 6, 2005·Applied and Environmental Microbiology·Alison BuchanMary Ann Moran
Jun 28, 2014·Antonie van Leeuwenhoek·Yingfang LinNianzhi Jiao
Jan 13, 2010·International Journal of Microbiology·Abdeljabbar HediAbdellatif Boudabous
Jan 11, 2014·International Journal of Systematic and Evolutionary Microbiology·Fehmida BibiYoung Ryun Chung
Jun 17, 2009·International Journal of Systematic and Evolutionary Microbiology·Yong-Xia WangXiao-Long Cui
Sep 5, 2008·International Journal of Systematic and Evolutionary Microbiology·Theresia Umi HarwatiKazuya Watanabe
Jan 8, 2009·International Journal of Systematic and Evolutionary Microbiology·Jung-Hoon YoonTae-Kwang Oh
Aug 4, 2009·International Journal of Systematic and Evolutionary Microbiology·Jung-Hoon YoonTae-Kwang Oh
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Nov 10, 2009·International Journal of Systematic and Evolutionary Microbiology·Kwang Kyu KimSong-Gun Kim
Jun 5, 2008·International Journal of Systematic and Evolutionary Microbiology·Chung Yeon Hwang, Byung Cheol Cho
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