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Extracellular enzyme production by Rhizopus and Mucor species on solid media
Abstract:
Solid media were employed to determine the presence and absence of extracellular enzyme production by two genera of fruit-rot fungi, Rhizopus and Mucor. The results of this investigation revealed that phosphatase was released into the cultural medium by all the fungi examined; however, only R. oryzae, R. tritici, M. mucedo, and M. piriformis showed the possibility of being high producers of the enzyme. Protease, urease, ribonuclease, pectate lyase, and polygalacturonase, at varying levels of activity, were detected, in the majority of the fungi, in the cultural medium.
Insights
Fruit-rot fungi Rhizopus and Mucor produce extracellular enzymes. Phosphatase was detected in all fungi, with specific species showing high production potential, alongside other enzymes like protease and urease.
Area of Science:
- Mycology
- Biochemistry
Background:
- Fruit-rot fungi, including Rhizopus and Mucor, play a significant role in post-harvest losses.
- Understanding their enzymatic activity is crucial for developing control strategies.
Purpose of the Study:
- To investigate the extracellular enzyme production profiles of Rhizopus and Mucor species.
- To identify potential high producers of specific enzymes for further research.
Main Methods:
- Solid media techniques were utilized to assess enzyme secretion.
- Qualitative and quantitative analysis of enzyme activity in the cultural medium.
Main Results:
- All tested fungi released phosphatase into the medium.
- Rhizopus oryzae, Rhizopus tritici, Mucor mucedo, and Mucor piriformis were identified as potential high phosphatase producers.
- Protease, urease, ribonuclease, pectate lyase, and polygalacturonase activities were detected in most isolates.
Conclusions:
- Rhizopus and Mucor genera exhibit diverse extracellular enzyme production capabilities.
- Specific species demonstrate significant potential for phosphatase production.
- The identified enzymes are relevant to the pathogenicity and spoilage activities of these fungi.