In vitro antagonistic efficacy of plant extracts on the enzyme activity of Colletotrichum gloeosporioides
- In vitro antagonistic efficacy of plant extracts on the enzyme activity of Colletotrichum gloeosporioides
- Rangarajulu Senthil Kumaran; Yong-Keun Choi; Hyeon Jin Jeon; Heehoon Jung; 송경근; Hyung Joo Kim
- Plant extract; botanical pesticide; pectinolytic enzyme; cellulolytic enzyme
- Issue Date
- African journal of microbiology research
- VOL 7, NO 12, 1069-1076
- Anthracnose fungus, Colletotrichum gloeosporioides was isolated in culture from the diseased fruit
samples of chilli (Capsicum annuum). The fungus was identified by morphological and molecular
analysis. Plant root extracts of A. precatorius and R. tetraphylla and chemical fungicide, dithane-M45
were tested for their inhibitory effects on the cell wall degrading enzymes of C. gloeosporioides under
in vitro condition. The activity of cell wall degrading enzymes viz. polymethyl galacturonase (PMG),
pectin transeliminase (PTE) and the carboxymethyl cellulase (CMC) was assayed. Root extracts of A.
precatorius was found to be more efficient in inhibiting both the pectinolytic (PMG and PTE) and
cellulolytic (CMC) enzymes than dithane-M45. The inhibitory effects of enzyme might be due to the
presence of fungitoxic compounds such as phenolics, proteins and flavonoids in the root extracts of A.
precatorius. On the contrary, extract of R. tetraphylla was found to induce enzyme activity.
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