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PHASE-SPECIFIC GENES FOR MACROCONIDIATION IN NEUROSPORA CRASSA
Claude P. Selitrennikoff 1, Robert E. Nelson 1, and Richard W. Siegel 1
1 Department of Biology and Molecular Biology Institute, University of California, Los Angeles, California 90024
Two new mutant genes in Neurospora crassa prevent the formation of free macroconidia from proconidial chains. These genes, called conidial separation-1 and conidial separation-2, are phase-specific, playing no role in either the sexual life cycle or other aspects of the asexual life cycle. A cell-wall-associated autolytic activity was found to increase in wild-type cultures at the time of active formation of free conidia from proconidial chains; no such increase was detected in mutant cultures. It appears that the products of these genes are both essential for and unique to macroconidiation.
Submitted on April 22, 1974Revised on June 5, 1974
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