FIG 6.

Volcano plots depicting fold changes and P values (corrected for false discovery rate [FDR]) for statistical comparisons among all stations for M. aeruginosa NIES 843 genes involved in nitrogen metabolism and acquisition. Genes surveyed include those involved in ammonia (glnA, glnN, MAE_125900, MAE_17690, MAE_40010, and MAE_40020) (red), nitrate/nitrite (MAE_14800, narB, nirA, and ntcBCD) (blue), and urea (MAE_06180 to MAE_06220 and ureA to ureG) (green) pathways and the global nitrogen regulator ntcA (purple). Black points represent those genes that showed no significant difference (P > 0.05) in expression values between stations. Colored points represent those genes whose expression values were significantly different (P < 0.05) between stations 882 and 973 (A), 1163 and 973 (B), and 1163 and 882 (C).