Fig.
5. Activities of the redox enzymes: A) ascorbate peroxidase (APX), B)
dehydroascorbate reductase (DHA-R), C) glutathione reductase (G-R), D)
ascorbate free radical reductase (AFR-R) on leaves collected during
stretched-out leaves (SL), fruit setting (FS), cluster closing (CC) and
bunch ripening (BR) phenological phases from symptomless (filled bars)
or symptomatic (banded histograms) cv. Italia vines healthy (), with
brown wood-streaking () or with brown wood-streaking and white rot ().
Data are means of fifteen replicates ± sd. For each parameter, values
with the same letters are not significantly different according to Tukey
post-hoc test P⩽0.05.
Table 1. Isolation frequency (%) of fungal species obtained
from cv Italia vines healthy (H), with brown wood-streaking (BWS) and
with BWS and white rot (BWSWR).