FIG.1.

Nucleotide sequences of gyrA (a), gyrB (b), parC (c), and parE (d) fragments containing the QRDRs of Aeromonas spp. The sequences of the six sensitive strains of A. caviae (Ac), A. hydrophila (Ah), and A. sobria (As) are as determined in the present study; Ac7616, Ah7614, and As7433 are the reference CIP strains. The A. salmonicida (A. sal) gyrA sequence is as reported by Oppegaard and Sørum (30). The E. coli numbering system is used (GenBank accession numbers are given in footnote c of Table 1). QRDRs are framed and shaded. Nucleotide differences are indicated with boldface characters and are underlined when the difference led to amino acid changes. The corresponding nucleotide (Nt.) and proteic (Pr.) consensus sequences are shown.