The treatment of apple and banana fruits with 2-CEFA and ethacyde induced the production of ethylene and accelerated the ripening and accumulation of ACC in apple fruits. Inhibitors AOA, AVG, and CoCl2 acted at the different steps of ethylene biosynthesis, inhibited the physiological aging process and increased storage longevity. Treatment with astaxantine and BOA delayed the pick of ethylene production by fruits. The content of PGIP was correlated with intensity of ethylene production. The infection of fruits with phytopathogenic microorganisms lowered as the result of the inhibition of pathogen PG. The dynamics of PGIP activity in fruits suggests its important role in the processes of ripening.
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