关键词: 炭疽病, 荔枝, 贮藏

Abstract: Changes in respiration rate, ethylene production, oxidation and peroxidation process and activities of several enzymes related to phenolic oxidation in litchi fruit were determined after inoculating litchi fruit with Colletotrichum gloeosporioides.The results showed that after inoculation, both respiration rate and ethylene production of litchi fruit enhanced significantly, the rate of superoxide radical anion (O₂^·) production and lipid peroxidation reactant-malondialdehyde (MDA) increased, the activity of superoxide dismutase (SOD) decreased while polyphenoloxidase (PPO), peroxidase (POD) and phenylalanine ammonia-lyase (PAL) promoted on litchi pericarp.All above indicated that the infection of Colletotrichum gloeosporioides could enhance respiration rate and ethylene production, accelerate the course of oxidation and peroxidation, and induce the activities of POD, PPO and PAL on litchi pericarp.So the infection of Colletotrichum gloeosporioides was one of the important reasons that quickened senescence, browning and decay of litchi fruit.

Key words: Colletotrichum gloeosporioides, litchi, storage