DEOXYRIBONUCLEIC-ACID RELATIONSHIPS AMONG MEMBERS OF THE GENUS AEROMONAS

被引:40
作者
MACINNES, JI
TRUST, TJ
CROSA, JH
机构
[1] UNIV WASHINGTON, SCH MED, DEPT MICROBIOL & IMMUNOL, SEATTLE, WA 98195 USA
[2] UNIV VICTORIA, DEPT BIOCHEM & MICROBIOL, VICTORIA V8W 2Y2, BC, CANADA
关键词
D O I
10.1139/m79-083
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Polynucleotide sequences among 24 motile and 11 non-motile aeromonads were studied by analysis of deoxyribonucleic acid - deoxyribonucleic acid (DNA-DNA) duplexes with endonuclease S1. In addition, DNA base composition (mole % guanine and cytosine (G + C) and relative genome sizes were determined for selected strains. Large variations in genome size were found and % GC ranged from 57.1 to 62.9%. On the basis of the strains examined, the Genus Aeromonas consists of two genotypically legitimate groups: a diverse group of motile aeromonads, and the genetically more homogeneous non-motile aeromonads, comprising the species Aeromonas salmonicida. Internal homology groups could not be demonstrated within the motile aeromonads, and significant divergence in related sequence was indicated. This diverse motile group forms the single species Aeromonas hydrophila.
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收藏
页码:579 / 586
页数:8
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