Characterization and Expression of Phospholipase D Putatively Involved in Colletotrichummusae Disease Development of Postharvest Banana Fruit

Phospholipase D (PLD) in plants plays an important role growth, development, and stress response. The effect of hexanal on PLD banana fruit responding to Colletotrichum musae infection remains poorly understood. In this study, four putative genes, named as MaPLD1, MaPLD2, MaPLD3, MaPLD4 were identified from fruit. MaPLDs can be classified into three the seven known families according sequence characterization. Their deduced amino acid sequences displayed homology PLDs other plant species. Furthermore, specific expression analysis genes response C. was studied relationship between family members under anthracnose clarified. Changes both activity PLC, connection phospholipases compared. results showed that incidence disease inoculated with dramatically increased after 6 days storage, activation PLC infected before inhibited by treatment, which suggested enzymes play a protective cope participation their regulation. Of MaPLD had stronger MaPLD1 MaPLD4. These data demonstrated treatment could enhance resistance musae, take part defensive system harvested modulating metabolism cell membrane lipids, thus suppress development -inoculated during storage.