1887

Abstract

A cold-tolerant, translucent, yellow-pigmented, Gram-stain-positive, non-motile, rod-shaped bacteria was isolated from snow of the Zadang Glacier on the Tibetan Plateau, PR China. 16S rRNA gene sequence similarity analysis indicated that the isolate was closely related to Conyzicola lurida KCTC 29231 and Leifsonia psychrotolerans DSM 22824 at a level of 97.72 and 97.49 %, respectively. Other close relatives had a 16S rRNA gene sequence similarity of less than 97 %. The major cell-wall amino acid was 2,4-diaminobutyric acid. The cell-wall sugars were rhamnose, ribose, glucose, galactose and mannose. The major menaquinones were MK-9, MK-10 and MK-11. The major polar lipids were diphosphatidylglycerol and phosphatidylglycerol. The predominant fatty acids were anteiso-C15 : 0 and iso-C16 : 0. In DNA–DNA hybridization tests, strain ZD5-4 shared 43.6 and 34.2 % relatedness with C. lurida KCTC 29231 and L. psychrotolerans DSM 22824, respectively. Based on phenotypic and chemotaxonomic characteristics, strain ZD5-4 was considered to represent a novel species of the genus Conyzicola , for which the name Conyzicola nivalis sp. nov. is proposed. The type strain is ZD5-4 (=JCM 30076=CGMCC 1.12813). Emended descriptions of the genus Conyzicola and Conyzicola lurida are also provided.

Keyword(s): Actinobacteria , novel species and snow
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/content/journal/ijsem/10.1099/ijsem.0.002027
2017-08-18
2019-12-06
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