Ceftizoxime, a new cephalosporin, was active against Pseudomonas cepacia, Flavobacterium meningosepticum, Alcaligenes faecalis, and Acinetobacter calcoaceticus and was more potent against Pseudomonas aeruginosa and Pseudomonas putida than was carbenicillin.

Flavobacterium columnare is a Gram-negative fish pathogen causing columnaris disease in wild and cultured fish species. Although the pathogen is widespread in aquatic environments and fish worldwide, little is known about biology of F. columnare and mechanisms of columnaris disease pathogenesis. Previously we presented the complete genome sequence of F. columnare strain ATCC 49512. Here we pres...

From investigation of eight Flavobacterium sp. genes encoding enzyme proteins, it was found that six genes had nonstop frames (NSFs) on the antisense strands, and base sequences of the genes are mainly composed of repeating triplet sequence(s), 5'-GNC-3' (where G and C are guanine and cytosine, and N is either of the four bases), in the reading frames. Thus, we concluded that the biased nucleot...

A highly osmiophilic structure observed in all pigment-producing mutants of Flavobacterium examined is described. Several factors favor the possibility that this structure might be related to pigment synthesis or pigment accumulation.

Flavobacterium columnare causes columnaris disease in fresh and brackish water worldwide. F. columnare strain 94-081 was isolated from a diseased channel catfish in 1994; its genome sequence is the first completed genomovar II sequence.

Species of Flavobacterium are abundant in marine environments, occurring in sea water and sediments as well as in the slime and feces of various fish. The activity of flavobacteria in fish spoilage is not uncommon (Castell and Mapplebeck, 1952). Other than the studies of these latter workers, only the investigations of MacLeod and his associates (MacLeod et al., 1954, 1958) deal, to any extent,...