Endophytic Colletotrichum siamense for Biocontrol and Resistance Induction in Guarana Seedlings
Table 5
Average chitinase (CHI) activity in guarana leaves.
Treatment
CHI (U·mL−1)
Elapsed time in hours after pathogen inoculation
0
48
72
96
CV (%)
CS + pathogen
0.0002 ± 0.00005a
0.0002 ± 0.00003b
0.0002 ± 0.00004a
0.0002 ± 0.00006a
0.26
F + pathogen
0.0002 ± 0.00004a
0.0003 ± 0.00007a
0.0001 ± 0.00004b
0.0002 ± 0.00004a
0.27
Positive control
0.0002 ± 0.00005a
0.0003 ± 0.00006a
0.0002 ± 0.00006a
0.0002 ± 0.00006a
0.32
Negative control
0.0002 ± 0.00006a
0.0002 ± 0.00008b
0.0002 ± 0.0001a
0.0002 ± 0.00008a
0.37
Values in columns followed by the same letter are not significantly different (, Tukey’s test). CS: Colletotrichum siamense; F: fungicide; CV: coefficient of variation.