Department of Biology, Chair for Molecular Genetics and Biology of Microorganisms, University of Ljubljana, Biotechnical Faculty, Večna Pot 111, 1000, Ljubljana, Slovenia.
Antonie Van Leeuwenhoek. 2013 Apr;103(4):763-9. doi: 10.1007/s10482-012-9858-0. Epub 2012 Nov 29.
A bacterial strain designated JA-1, related to Janthinobacterium lividum, was isolated from glacier ice samples from the island Spitsbergen in the Arctic. The strain was tested for phenotypic traits and the most prominent appeared to be the dark red brown to black pigmentation different from the violet pigment of Janthinobacterium, Chromobacterium and Iodobacter. Phylogenetic analysis based on 16S rRNA gene sequences and DNA-DNA hybridization tests showed that strain JA-1 belongs to the genus Janthinobacterium but represents a novel lineage distinct from the two known species of this genus, J. lividum and Janthinobacterium agaricidamnosum. The DNA G + C content of strain JA-1 was determined to be 62.3 mol %. The isolate is a psychrotrophic Gram negative bacterium, rod-shaped with rounded ends, containing intracellular inclusions and one polar flagellum. On the basis of the presented results strain JA-1 is proposed as the type strain of a novel species of the genus Janthinobacterium, for which the name Janthinobacterium svalbardensis sp. nov. is proposed (JA-1(T) = DSM 25734, ZIM B637).
一株与紫色杆菌属（Janthinobacterium）、Chromobacterium 和 Iodobacter 的紫色不同的深棕红色到黑色的细菌菌株 JA-1，被分离自北极斯瓦尔巴群岛的冰川冰样本。该菌株经过表型特征测试，最显著的特征似乎是深棕红色到黑色的色素沉着，与紫色杆菌属、Chromobacterium 和 Iodobacter 的紫色不同。基于 16S rRNA 基因序列和 DNA-DNA 杂交试验的系统发育分析表明，菌株 JA-1 属于紫色杆菌属，但代表了一个与该属的两个已知种（J. lividum 和 Janthinobacterium agaricidamnosum）不同的新谱系。菌株 JA-1 的 DNA G+C 含量为 62.3 mol%。该分离物是一种嗜冷革兰氏阴性菌，呈杆状，两端圆形，含有细胞内包涵体和一个极生鞭毛。基于所呈现的结果，菌株 JA-1 被提议为紫色杆菌属的一个新种的模式株，该新种被命名为 Janthinobacterium svalbardensis sp. nov.（JA-1(T)=DSM 25734，ZIM B637）。
