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Full-Text Articles in Medicine and Health Sciences
Diversity Of Non-Flavobacterium Columnare Bacteria Associated With Columnaris-Like Diseased Fish, Ha Thanh Dong, Vuong Viet Nguyen, Wanniwat Mata, Pattanapon Kayansamruaj, Saengchan Senapin, Dachrit Nilubol, Channarong Rodkhum
Diversity Of Non-Flavobacterium Columnare Bacteria Associated With Columnaris-Like Diseased Fish, Ha Thanh Dong, Vuong Viet Nguyen, Wanniwat Mata, Pattanapon Kayansamruaj, Saengchan Senapin, Dachrit Nilubol, Channarong Rodkhum
The Thai Journal of Veterinary Medicine
Numerous yellow and pink pigmented bacterial isolates had been recovered from diseased fish exhibiting columnaris-like disease in tilapia (Oreochromis spp.) farms in Thailand. The predominant species had been identified as Flavobacterium columnare while taxonomic classification of the remaining isolates and their pathogenic potential remain undetermined. An additional yellow bacterial strain had also been obtained from a koi carp sample showing columnaris-like symptoms. To continue our previous work, this study described the identification of ten representatives of unknown culturable non-Flavobacterium columnare bacteria based on a combination of phenotypic characteristics and nucleotides homology of 16S rRNA gene and subsequently investigated their pathogenicity …
Comparative Evaluation Of Sequence Analysis Of 16s Rrna And Rpobgenes For Identification Of Aquatic Mycobacteria, Fazel Pourahmad, Randolph Harvey Richards
Comparative Evaluation Of Sequence Analysis Of 16s Rrna And Rpobgenes For Identification Of Aquatic Mycobacteria, Fazel Pourahmad, Randolph Harvey Richards
Turkish Journal of Veterinary & Animal Sciences
The nucleotide sequences of partial 16S rRNA and bacterial RNA polymerase ß-subunit (rpoB) genes for 57 mycobacterial strains were determined. Compared to the 16S rRNA gene sequences, variable regions were scattered along the whole fragment sequence, indicating that the rpoB gene is more polymorphic. Unlike 16S rRNA sequences, species variation was observed within M. fortuitum strains. The topology of the rpoB-based phylogenetic tree was almost the same as that of the 16S rRNA sequence analysis. These results suggest that the rpoB gene is a highly conserved gene, and taxonomical studies based on this gene may be comparable with similar studies …