Pseudoxanthomonas helianthi sp. nov., isolated from roots of Jerusalem artichoke (Helianthus tuberosus).

Pseudoxanthomonas helianthi sp. nov., isolated from roots of Jerusalem artichoke (Helianthus tuberosus). Int J Syst Evol Microbiol. 2016 Aug 30; Authors: Kittiwongwattana C, Thawai C Abstract A bacterium designated as strain roo10T was isolated from roots of Jerusalem artichoke (Helianthus tuberosus). Cells are Gram-stain-negative and non-flagellated rods. The phylogenetic analysis indicated that it was a member of the genus Pseudoxanthomonas, and its close relatives included Pseudoxanthomonas kalamensis JA40T (97.8 % 16S rRNA gene sequence similarity), Pseudoxanthomonas sangjuensis 5GH38-5T (97.7 %) and Pseudoxanthomonas daejeonensis TR6-08T (97.1 %). Growth of strain roo10T occurred at pH ranging from 7 to 9. The temperatures for growth ranged from 20 to 37 oC. NaCl tolerance was observed from 0.005 to 5 % (w/v) concentration. Predominant fatty acids were iso-C15:0 (23.5 %), iso-C16:0 (18.9 %) and anteiso-C15:0 (11.5 %). Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidyl-N-methylethanolamine were the major polar lipids. The predominant quinone was ubiquinone 8 (Q-8). The DNA G+C content was 65.7 mol% (Tm). Comparison of phenotypic and chemotaxonomic characteristics indicated that strain roo10T was distinguishable from its close relatives. Additionally, the DNA-DNA relatedness levels between strain roo10T and P. kalamensis DSM 18571T (22.1+0.5 %), P. sangjuensis 5GH38-5T (21.1+0.2 %) and P. daeje...
Source: International Journal of Systematic and Evolutionary Microbiology - Category: Microbiology Authors: Tags: Int J Syst Evol Microbiol Source Type: research