Multi-resistance analysis of secreted peroxidase from wintersweet (Chimonanthus praecox)

摘要

Peroxidases play a critical role in the anti-oxidant enzyme protection system of plants accordingly, we assumed that wintersweet (Chimonanthus praecox), as a multi-resistant plant adapting to a variety of stressful conditions, should contain certain special peroxidase. In this study, a putative peroxidase cDNA containing a ORF (CpPOD) was cloned by screening the full-length cDNA library of wintersweet. In order to decipher the its function, the cloned gene was overexpressed in tobacco system via Agrobacterium-mediated transformation method. The results initially showed that overexpression of CpPOD can not only enhance the ability of water-keeping, but also provide anti-oxidant activity to stress injury. All these results suggested that the CpPOD gene presents multiple resistance actions.