Expression levels of six up-regulated detoxification genes verified by quantitative real-time RT-PCR.

<p>Each bar represented the mean of three biological replicates, each performed in triplicate. Error bars indicated the standard errors from the mean. Data were normalized to the expression of β-actin and GADPH. Different letter indicated significant difference (P≤0.05) in the expression levels between strains based on a two-sample <i>t</i>-test.