Green mold caused by Penicillium digitatum is an important factor limiting the shelf life of mandarin fruit. In this study, effect ultraviolet-C (UV-C) irradiation on cellular structure, endogenous jasmonic acid (JA), and development P. in satsuma fruit was investigated. UV-C treatments included 0 (untreated control), 3, 10 kJ m −2 or exposure time 0, 1.18, 4.52 min, respectively. The dose sign...