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Updated: May 9, 2026

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Published on: February 3, 2017
Spirosoma endophyticum sp. nov., isolated from Zn- and Cd-accumulating Salix caprea
Julia Fries1, Stefan Pfeiffer1, Melanie Kuffner1
1AIT Austrian Institute of Technology GmbH, Bioresources Unit, Tulln, Austria.
Abstract:
A Gram-reaction-negative, yellow-pigmented strain, designated EX36(T), was characterized using a polyphasic approach comprising phylogenetic, morphological and genotypic analyses. The endophytic strain was isolated from Zn/Cd-accumulating Salix caprea in Arnoldstein, Austria. Analysis of the 16S rRNA gene demonstrated that the novel strain is most closely related to members of the genus Spirosoma (95 % sequence similarity with Spirosoma linguale). The genomic DNA G+C content was 47.2 mol%. The predominant quinone was and the major cellular fatty acids were summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1ω7c), C16 : 1ω5c, iso-C17 : 0 3-OH and iso-C15 : 0. On the basis of its phenotypic and genotypic properties, strain EX36(T) should be classified as a novel species of the genus Spirosoma, for which the name Spirosoma endophyticum sp. nov. is proposed. The type strain is EX36(T) ( = DSM 26130(T) = LMG 27272(T)).
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