However, little information
is available about the effect of 1-MCP on inducing resistance
against fruit decay and the mechanisms by which 1-MCP delays
ripening. The present paper investigated the effect of 1-MCP on the
retention of quality and the induced resistance on Hupingzao
jujube. To investigate the mode of actions of 1-MCP to delay
senescence and induce resistance, enzymes related with disease
resistance such as phenylalanine ammonia-lyase (PAL) and polyphenoloxidase
(PPO) and enzymes involved in reactive oxygen
species (ROS) scavenging including catalase (CAT) and superoxide
dismutase (SOD) were evaluated.