Sphingomonas cynarae sp. nov., a proteobacterium that produces an unusual type of sphingan

International Journal of Systematic and Evolutionary Microbiology
Adelfia TalàPietro Alifano

Abstract

Strain SPC-1(T) was isolated from the phyllosphere of Cynara cardunculus L. var. sylvestris (Lamk) Fiori (wild cardoon), a Mediterranean native plant considered to be the wild ancestor of the globe artichoke and cultivated cardoon. This Gram-stain-negative, catalase-positive, oxidase-negative, non-spore-forming, rod-shaped and non-motile strain secreted copious amounts of an exopolysaccharide, formed slimy, viscous, orange-pigmented colonies and grew optimally at around pH 6.0-6.5 and 26-30 °C in the presence of 0-0.5 % NaCl. Phylogenetic analysis based on comparisons of 16S rRNA gene sequences demonstrated that SPC-1(T) clustered together with species of the genus Sphingomonas sensu stricto. The G+C content of the DNA (66.1 mol%), the presence of Q-10 as the predominant ubiquinone, sym-homospermidine as the predominant polyamine, 2-hydroxymyristic acid (C(14 : 0) 2-OH) as the major hydroxylated fatty acid, the absence of 3-hydroxy fatty acids and the presence of sphingoglycolipid supported this taxonomic position. 16S rRNA gene sequence analysis showed that SPC-1(T) was most closely related to Sphingomonas hankookensis ODN7(T), Sphingomonas insulae DS-28(T) and Sphingomonas panni C52(T) (98.19, 97.91 and 97.11 % sequence simil...Continue Reading

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Citations

Sep 28, 2015·International Journal of Systematic and Evolutionary Microbiology·Shuzhen WeiZhiqiang Zhang
May 7, 2015·International Journal of Systematic and Evolutionary Microbiology·Peter KämpferStefanie P Glaeser
Dec 24, 2013·International Journal of Systematic and Evolutionary Microbiology·Jing HuangXia-Fang Sheng
Jul 15, 2015·Antonie van Leeuwenhoek·Priyanka SinghDeok-Chun Yang
Nov 1, 2018·Journal of the Science of Food and Agriculture·Maria TufarielloGianluca Bleve
Jul 12, 2018·AMB Express·Graziano PizzolanteGiuseppe Egidio De Benedetto
Sep 8, 2021·Frontiers in Microbiology·Aparna BanerjeeRajesh K Sani

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