TROUBLESHOOTING OF CLASS III PEROXIDASE GENE FROM THE MOSS <i>DICRANUM SCOPARIUM</i>
Peroxidases (PRX) are a class of enzymes present in the tissues of plants, animals, and microorganisms. These enzymes serve to catalyze oxidoreduction between H<sub>2</sub>O<sub>2</sub> and various reductants. PRX has been studied extensively in higher plants and has been implicated in a variety of physiological processes including lignin biosynthesis, extensin polymerization, disease and pathogen response, wound healing, and response to air pollutant stress. In this work, we isolated and sequenced a complementary DNA (cDNA) of class III PRX gene in the Dicranum scoparium Hedw. and designated as DsPRX . BlastN in the EnsemblPlants database showed that DsPRX displayed 100% identity with a homologous PRX of Physcomitrella patens . Cloning of plant PRX could help in elucidating the physiological role of individual PRX isoforms during plant normal development and in response to various environmental factors.