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| Content Provider | Springer Nature Link |
|---|---|
| Author | Karmakar, Moumita Ghosh, Barnita Ray, Rina Rani |
| Copyright Year | 2011 |
| Abstract | Rhizopus oryzae PR7 MTCC 9642 was a dimorphic fungus that showed a regular 90 days cycle of filament (mycelium) to pellet (yeast) transformation through a distinct bottom dwelling intermediate state and the pellets never revert back to filamentous form. Apart from the normal cycle, high temperature (37°C and above) and extreme pH also induced the yeast formation. Among the ions tested, calcium and chloride ions were found to restore the filamentous morphology, even in extreme pH and temperature. Cysteine HCl also played noteworthy role in maintaining mycelial growth even at adverse condition. Immobilized spores showed the appearance of intermediate form instead of typical yeast form even at high temperature. The strain could produce a number of extracellular hydrolytic enzymes like cellulolytic, xylanolytic, pectinolytic and amylolytic enzymes. The pellet and mycelial forms were found to be a better producer of cellulase–lignocellulase enzymes and amylolytic enzymes respectively, which might be correlated with their infectivity. Increase in inoculum size, agitation during cultivation, change in carbon and nitrogen source failed to induce mycelial growth in extreme conditions, which might be explained as irreversible change of configuration of protein responsible for mycelial development. |
| Starting Page | 215 |
| Ending Page | 221 |
| Page Count | 7 |
| File Format | |
| ISSN | 00468991 |
| Journal | Indian Journal of Microbiology |
| Volume Number | 52 |
| Issue Number | 2 |
| e-ISSN | 09737715 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-08-26 |
| Publisher Institution | Association of Microbiologists of India |
| Publisher Place | India |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Dimorphism Pseudohypha Filaments Pellet form Rhizopus oryzae Microbiology Medical Microbiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Microbiology |
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