Van Trappen Stefanie, Vandecandelaere Ilse, Mergaert Joris, Swings Jean
Laboratorium voor Microbiologie, Vakgroep Biochemie, Fysiologie en Microbiologie, Universiteit Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium.
Int J Syst Evol Microbiol. 2004 Mar;54(Pt 2):445-448. doi: 10.1099/ijs.0.02922-0.
A taxonomic study was performed on three strains isolated from microbial mats in Lake Fryxell, McMurdo Dry Valleys, Antarctica. Phylogenetic analysis based on 16S rRNA gene sequences indicated that these strains belong to the family Flavobacteriaceae, in which they form a distinct lineage. The isolates are Gram-negative, chemoheterotrophic, aerobic, rod-shaped cells. They are psychrophilic and yellow-pigmented, with DNA G+C contents in the range 37.8-38.9 mol%. Whole-cell fatty acid profiles revealed mainly branched fatty acids and 17 : 0 2-OH. On the basis of genotypic, phenotypic, chemotaxonomic and phylogenetic results, it is proposed that the isolates represent a novel species in a new genus, Gillisia limnaea gen. nov., sp. nov. The type strain is LMG 21470(T) (=DSM 15749(T)).
对从南极洲麦克默多干谷弗里克塞尔湖微生物垫中分离出的三株菌株进行了分类学研究。基于16S rRNA基因序列的系统发育分析表明，这些菌株属于黄杆菌科，在该科中形成一个独特的谱系。这些分离株为革兰氏阴性、化能异养、需氧的杆状细胞。它们是嗜冷菌且带有黄色色素，DNA的G+C含量在37.8-38.9 mol%范围内。全细胞脂肪酸谱主要显示为支链脂肪酸和17 : 0 2-OH。基于基因型、表型、化学分类学和系统发育结果，建议将这些分离株归为一个新属中的一个新物种，即湖栖吉利斯菌（Gillisia limnaea），新属，新种。模式菌株为LMG 21470(T)（=DSM 15749(T)）。
