{"title":"气单胞菌16S ~ 23S rDNA间隔片段长度多态性","authors":"Marzena Laganowska, Adam Kaznowski","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>We analyzed polymorphism of the PCR-amplified 16S-23S rDNA spacer of Aeromonas species. A total of 69 isolates representing 18 DNA hybridization groups were used in this study. The analysis of PCR products of 16S-23S rDNA spacers revealed patterns consisting of two to eight DNA fragments. The fragment sizes ranged from 730 to 1050 bp. DNA patterns revealed a considerable genetic diversity between species and within a species. When a procedure to eliminate heteroduplex formation was performed, the number of bands was reduced to 2-5. Nevertheless the homoduplex ISR (intergenic spacer region) patterns obtained were not useful for species distinguishing.</p>","PeriodicalId":75388,"journal":{"name":"Acta microbiologica Polonica","volume":"52 4","pages":"343-54"},"PeriodicalIF":0.0000,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"16S to 23S rDNA spacer fragment length polymorphism of Aeromonas sp.\",\"authors\":\"Marzena Laganowska, Adam Kaznowski\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We analyzed polymorphism of the PCR-amplified 16S-23S rDNA spacer of Aeromonas species. A total of 69 isolates representing 18 DNA hybridization groups were used in this study. The analysis of PCR products of 16S-23S rDNA spacers revealed patterns consisting of two to eight DNA fragments. The fragment sizes ranged from 730 to 1050 bp. DNA patterns revealed a considerable genetic diversity between species and within a species. When a procedure to eliminate heteroduplex formation was performed, the number of bands was reduced to 2-5. Nevertheless the homoduplex ISR (intergenic spacer region) patterns obtained were not useful for species distinguishing.</p>\",\"PeriodicalId\":75388,\"journal\":{\"name\":\"Acta microbiologica Polonica\",\"volume\":\"52 4\",\"pages\":\"343-54\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta microbiologica Polonica\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta microbiologica Polonica","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
16S to 23S rDNA spacer fragment length polymorphism of Aeromonas sp.
We analyzed polymorphism of the PCR-amplified 16S-23S rDNA spacer of Aeromonas species. A total of 69 isolates representing 18 DNA hybridization groups were used in this study. The analysis of PCR products of 16S-23S rDNA spacers revealed patterns consisting of two to eight DNA fragments. The fragment sizes ranged from 730 to 1050 bp. DNA patterns revealed a considerable genetic diversity between species and within a species. When a procedure to eliminate heteroduplex formation was performed, the number of bands was reduced to 2-5. Nevertheless the homoduplex ISR (intergenic spacer region) patterns obtained were not useful for species distinguishing.
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