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Isozyme patterns and sexual morphogenesis in Schizophyllum.

C S Wang, J R Raper

Proceedings of the National Academy of Sciences of the United States of America

|July 1, 1970

Summary

Enzyme isozyme patterns in Schizophyllum commune correlate with sexual morphogenesis genes. Differences in 14 enzymes, including dehydrogenases and esterases, were linked to specific genetic pathways controlling reproduction.

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Area of Science:

Mycology
Biochemistry
Genetics

Background:

Schizophyllum commune is a model organism for studying fungal genetics.
Sexual morphogenesis in fungi is a complex process regulated by specific gene sequences.
Isozymes, or different forms of the same enzyme, can reflect underlying genetic variations.

Purpose of the Study:

To investigate the relationship between enzyme isozyme patterns and sexual morphogenesis in Schizophyllum commune.
To identify specific enzymes whose expression or activity is linked to the A- and B-sequences of sexual development.

Main Methods:

Protein extracts from five isogenic strains of Schizophyllum commune were analyzed.
Isozymes were separated using polyacrylamide gel disc electrophoresis.
Isozyme patterns were compared based on presence, absence, mobility, and relative activity.

Main Results:

Differences in isozyme patterns were observed for 14 enzymes, including NADH-dehydrogenase, NADPH-dehydrogenase, NAD- and NADP-dependent dehydrogenases, acid phosphatases, leucine aminopeptidase, and esterases.
These variations in isozyme patterns were correlated with the functional status of the A- and B-sequences involved in sexual morphogenesis.
Phenolase isozymes showed no significant correlation with sexual morphogenesis.

Conclusions:

Isozyme analysis is a valuable tool for understanding the genetic control of sexual morphogenesis in fungi.
Specific enzyme isozymes serve as markers for the activity of genes regulating fungal reproduction.
The study highlights the intricate biochemical changes associated with fungal development.

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