Induced resistance to anthracnose, (Colletotrichum gloeosporioides), in mango fruits by postharvest treatment with salicylic acid.
Zeng KaiFang, Jiang WeiBo
Author Affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
Journal of China Agricultural University 10 : 36-40
Abstract : Mature green mango (cv. Matisu) fruits were treated with salicylic acid (SA) solution or water (control), inoculated with C. gloeosporioides [Glomerella cingulata] spore suspension (1×104 CFU [colony-forming units]/ml), and stored at 13°C and 85-95% RH [relative humidity]. Compared with the control, fruits treated with SA had lower disease incidence (by 62.5%) on the 4th day after inoculation, and lesion diameter on the 12th (by 39.9%) and 16th (by 35.3%) day after inoculation. The activities of peroxidase, phenylalanine-ammonia lyase and superoxide dismutase, and the concentrations of phenolic compounds and hydrogen peroxide in the peel of treated fruits were significantly higher than those in the control. These results indicated that SA could enhance the resistance in mango fruits to anthracnose disease.