extremely significantP < 0.0001
In particular, compared with the level observed at 0 day, the expression of pbpG (fivefold), vpsI3 (eightfold), and farB (sevenfold) reached extremely significant levels at 15 days ( t = 14.08, df = 8, P < 0.0001), 10 days ( t = 29.66, df = 8, P < 0.0001), and 10 days ( t = 19.41, df = 8, P < 0.0001), respectively ( Figure 6 ).