Infection of avocado fruit by F. solanum and F. sambucinum [Gibberella pulicaris] (group A) caused accelerated softening of fruit accompanied by earlier rise in climateric respiration and activity of polygalacturonase (PG) and pectin methylesterase (PME). F. avenaceum, F. equiseti, F. moniliforme [Gibberella fujikuroi] and F. semitectum (group B) had no such effect and physiological processes were as in uninfected fruit. The incubation period of fungi in group A was shorter than in group B; rot development started when the rate of respiration began to decrease and with max. PG and min. PME activity.

The abstract is from CABI:

https://www.cabi.org/ISC/abstract/19770359278