Test for specific PCR amplification with PSMG as a Pseudomonas-specific primer. Lanes: 1, P. aeruginosa; 2, P. putida; 3, P. fluorescens I; 4, P. fluorescens V; 5, V. vulnificus; 6, A. hydrophila; 7, C. glutamicum; 8, no template DNA; 9, pGEM ladder (fragment sizes [from the top], 2,645, 1,605, 1,198, 676, 517, 460, 396, 350, 222, 179, 126, and 75 bp).