DIFFERENTIATION BETWEEN ACTINOBACILLUS-(HAEMOPHILUS)-ACTINOMYCETEMCOMITANS, HAEMOPHILUS-APHROPHILUS AND HAEMOPHILUS-PARAPHROPHILUS BY MULTILOCUS ENZYME ELECTROPHORESIS

被引:29
作者
CAUGANT, DA
SELANDER, RK
OLSEN, I
机构
[1] PENN STATE UNIV,DEPT BIOL,UNIVERSITY PK,PA 16802
[2] UNIV OSLO,FAC DENT,DEPT MICROBIOL,N-0316 OSLO 3,NORWAY
来源
JOURNAL OF GENERAL MICROBIOLOGY | 1990年 / 136卷
关键词
D O I
10.1099/00221287-136-10-2135
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Genetic relationships among isolates assigned to Actinobacillus actinomycetemcomitans, Haemophilus aphrophilus and H. paraphrophilus were determined by analysis of electrophoretically demonstrable allelic variation in 14 structural genes encoding metabolic enzymes. Among the 51 isolates analysed there were 25 electrophoretic types (ETs), among which mean genetic diversity per locus was 0.753. Cluster analysis of ETs demonstrated one well-defined group of 11 ETs representing solely the genotypes of all 17 isolates assigened to A. actinomycetemcomitans. The remaining 14 ETs represented the genotypes of the 34 isolates of H. aphrophilus and H. paraphrophilus. With the exception of ATCC 13252, all strains of H. aphrophilus were closely related, whereas strains assigned to H. paraphrophilus included distantly related lineages, some of which were similar to those of H. aphrophilus and should be assigned to this species. Thus, the study showed that there is no significant overall genetic similarity between A. actinomycetemcomitans and the two Haemophilus spp.
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页码:2135 / 2141
页数:7
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