Asticcacaulis benevestitus sp. nov., a psychrotolerant, dimorphic, prosthecate bacterium from tundra wetland soil

• DOI: 10.1099/ijs.0.64122-0
• Publication Date: 2006-09-06T19:38:35Z
• Authors: Lina V. Vasilyeva; Marina V. Omelchenko; Yulia Y. Berestov...; Anatolii M. Lysenko; Wolf-Rainer Abraham; Svetlana N. Dedysh; George A. Zavarzin
• Keywords: Strain (injury); Sexual dimorphism

A Gram-negative, aerobic, heterotrophic, non-pigmented, dimorphic prosthecate bacterium was isolated from tundra wetland soil and designated strain Z-0023 T . Cells of this had a life cycle developed non-adhesive stalk at site not coincident with the centre cell pole, characteristic typical representatives genus Asticcacaulis highly distinctive feature cells presence conical, bell-shaped sheath when grown low temperature. This psychrotolerant, moderately acidophilic organism capable growth between 4 28 °C (optimum 15–20 °C) pH 4.5 8.0 5.6–6.0). The major phospholipid fatty acid 18 : 1 ω 7 c phospholipids were phosphatidylglycerols. G+C content DNA 60.4 mol%. On basis 16S rRNA gene sequence similarity, most closely related to biprosthecium (98 % similarity), taihuensis %) excentricus (95 %). However, levels DNA–DNA relatedness these organisms number features isolate indicated that it represented novel species , for which name benevestitus sp. nov. is proposed. type (=DSM 16100 =ATCC BAA-896 ).