Mango resistance against Ceratocystis fimbriata is impaired by local starch mobilization

摘要: Mango wilt, caused by Ceratocystis fimbriata, is one of the most serious diseases affecting mango production worldwide. Considering great variation in basal level wilt resistance among cultivars, this study aimed to assess changes photosynthesis and role played carbon metabolism on two cultivars with contrasting responses C. fimbriata infection. Assessment disease plant physiology variables was performed over 21 days. The response against fungal infection associated an increase mobilization starch from leaf tissue around sites stems. Plants cv. Uba were less susceptible and, presumably, better capable mobilizing reserves for defense compounds, which prevented colonization stem inner tissues consequent disruption xylem hydraulic conductivity photosynthesis. On other hand, inability targeting defense-related compounds should have accounted higher susceptibility Palmer