Ultrastructure of protoplasts from mycelium and microconidia ofTrichophyton mentagrophytes
- 1 January 1985
- journal article
- research article
- Published by Oxford University Press (OUP) in Medical Mycology
- Vol. 23 (1) , 31-36
- https://doi.org/10.1080/00362178585380061
Abstract
Protoplast formation from mycelium and microconidia of Trichophyton mentagrophytes was achieved with Novozym 234. Pretreatment procedures with dithiothreitol or urea mercaptoethanol sodium lauryl sulphate before digestion with Novozym 234 greatly reduced protoplast yield from mycelium. Snail gut enzyme did not produce protoplasts in good yield. Scanning electron microscopy of mycelium protoplasts showed the acquired spherical shape. The plasma membrane appeared finely granular although remnants of cell wall could sometimes be observed. Transmission electron microscopy showed the cell interior of these protoplasts was plasmolysed. Microconidia treated with Novozym 234 displayed a range of cell wall digestion, with intact protoplasts showing distinct cytoplasmic organelles. Formazione di protoplasti dal micelio e dai microconidi di Trichophyton mentagrophytes è stata ottenuta con l'uso del Novozym 234. La resa in protoplasti miceliari era molto ridotta se il micelio era trattato con ditiotreitol o urea, mercaptoetanolo e sodio laurilsolfato prima della digestione con Novozym 234. La preparazione enzimatica dell'intestino di lumaca non produceva alte rese di protoplasti. Che i protoplasti miceliali avessero forma sferica, è stato dimostrato al microscopio elettronico a scansione. La membrana citoplasmatica appariva finemente granulare sebbene fossero talora presenti residui di parete cellulare. La microscopia elettronica a trasmissione mostrava che l'interno dei protoplasti andava incontro a plasmolisi.This publication has 9 references indexed in Scilit:
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