Fig. 2

Variations of the activity of key enzymes involved in reactive oxygen species metabolic and phenylpropanoid metabolic pathways during the early stage of Sporisorium scitamineum infection. All data points were means ± standard error (n = 3). Different lowercase letters indicated a significant difference, as determined by the Duncan’s new multiple range test (p < 0.05). YC05–179, smut-resistant genotype; ROC22, smut-susceptible genotype; POD, peroxidase; SOD, superoxide dismutase; CAT, catalase; PPO, polyphenol oxidase; PAL, phenylalnine ammonialyase; TAL, tyrosine ammonia-lyase