... are indicated relative to the level of wild-type tobacco, taken as 1,referring to the transcripts of CAT1 in the same samples. (C) The total activities of the antioxidant enzymes SOD, CAT and ... stress tolerance. These results increased our understanding of the role of the group C GhMPK2 gene in multiple defense-signaling pathways,including those that are involved in responses to pathogen ... [9]. In tobacco,salicylic acid (SA)-induced protein kinase and wound-induced protein kinase, two MAPKs in group A, wereactivated by inoculation with the tobacco mosaic virus(TMV) [10]. Their...