Plasmid pSC001 carrying GFP gene transformation was transferred into Fusarium oxysporum f.sp.cubense(Foc)using PEG-CaCl2.Observation under fluorescent microscope showed that when transformants were excitated by blue light,hypha and spores all porduced stable green fluorescent,indicating that GFP gene was successfully transformed to Foc and expressed.Pathogens marked with GFP were continuously cultured in later generations and vaccinated to Brazilian banana.The results showed that the introduction of GFP did...