Transcription of NRPS genes in Pseudomonas sp. strain DF41-1278 and in the 1278 relA, 1278 relA spoT, and relA-complemented mutants. Column 1, DF41-1278(pUCP22); column 2, 1278 relA(pUCP22) strain; column 3, 1278 relA spoT(pUCP22) strain; column 4, 1278 relA(pUCPrelA) strain; and column 5, 1278 relA spoT(pUCPrelA) strain. Bioluminescence was monitored after 12 h of growth in M9 minimal medium supplemented with 1 mM MgSO4 and 0.2% glucose. For strains that differ significantly from the wild type, columns are labeled with asterisks (*, P < 0.005).