Porphyrobacter mercurialissp. nov., isolated from a stadium seat and emended description of the genusPorphyrobacter
A novel, Gram-negative, non-spore-forming, pleomorphic yellow-orange bacterial strain was isolated from a stadium seat. Strain CoronadoTfalls within theErythrobacteraceaefamily and the genusPorphyrobacterbased on 16S rRNA phylogenetic analysis. This strain has Q-10 as the predominant respiratory lipoquinone, as do other members of the family. The fatty acid profile of this strain is similar to otherPorphyrobacter, however CoronadoTcontains predominately C18:1ω7cis and C16:0, a high percentage of the latter not being observed in any otherErythrobacteraceae. This strain is catalase-positive and oxidase-negative, can grow from 4 to 28 °C, at NaCl concentrations 0.1–1.5%, and at pH 6.0–8.0. On the basis of phenotypic and phylogenetic data presented in this study, strain CoronadoTrepresents a novel species in thePorphyrobactergenus for which the namePorphyrobacter mercurialissp. nov. is proposed; the type strain is CoronadoT(=DSMZ 29971, =LMG 28700).