SCREENING HIGH-PRODUCTION LACCASE OF PLEUROTUS OSTREATUS AND DEGRADATION OF AFB1 BY PLEUROTUS OSTREATUS LACCASE Vector Construction with Two Disease-resistance Genes and Their Expression in Transgenic Tobacco Primary Structure and cDNA Cloning of the Antifungal Protein GAFP - I from Gastrodia elata Molecular Structure, Biosynthesis and Photoreversibility of Cyanobacteriochromes