A PHYLOGENETIC ANALYSIS OF THE GENUS LEUCONOSTOC BASED ON REVERSE-TRANSCRIPTASE SEQUENCING OF 16-S RIBOSOMAL-RNA

被引：85

作者：

MARTINEZMURCIA, AJ ^{[1
]}

COLLINS, MD ^{[1
]}

机构：

[1] INST FOOD RES, READING LAB, READING RG2 9AT, ENGLAND

来源：

FEMS MICROBIOLOGY LETTERS | 1990年 / 70卷 / 01期

关键词：

Lactobacillus; Leuconostoc; Phylogeny; rRNA; Taxonomy;

D O I：

10.1016/0378-1097(90)90106-Z

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The phylogenetic interrelatioships of members of the genus Leuconostoc and some heterofermentative lactobacili, which phenotypically resemble leuconostocs, were investigated by comparative analysis of their 16 S rRNA sequences. The six species, Leuconostoc mesenteroides, Leu. carnosum, Leu. citreum, Leu. gelidum, Leu. lactis and Leu. pseudomesenteroides exhibited a high degree of sequence similarity with each other and formed a phylogenetically coherent group, quite separate from all other lactic acid bacteria investigated. The species Leu. paramesenteroides was found to be phylogenetically distinct from the Leu. mesenteroides group of species and formed a natural grouping with the heterofermentative lactobacili, Lb. confusus, Lb. kandleri, Lb. minor and Lb. viridescens. The rRNA sequence of the acidophilic species, Leu. oenos, displayed exceptionally low levels of homology with all of the other taxa examined. The 16 S sequence of Leu. oenos showed major nucleotide differences in relatively highly conserved positions of the molecule indicating this species is phylogenetically distinct and warrants a separate genus. © 1990.

引用

页码：73 / 83

页数：11

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