Open AccessMutants of Aspergillus nidulans deficient in nuclear migration during hyphal growth and conidiation
Author(s) -
A. J. Clutterbuck
Publication year - 1994
Publication title -
microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.019
H-Index - 179
eISSN - 1465-2080
pISSN - 1350-0872
DOI - 10.1099/13500872-140-5-1169
Subject(s) - conidiation , aspergillus nidulans , hypha , mutant , complementation , biology , heterokaryon , microbiology and biotechnology , spore , conidium , sexual reproduction , phenotype , genetics , gene
Anucleate primary sterigmata (aps) mutants of Aspergillus nidulans are partially blocked in conidiation (asexual sporulation) due to failure of the organized migration of nuclei into the conidiophore metulae. The mutants also have a slightly reduced hyphal growth rate and irregular distribution of nuclei in vegetative hyphae; the hyphal phenotype appears somewhat more variable than the conidiation defect. The mutants fall into two complementation groups, apsA and apsB, mapping on chromosomes IV and VI, respectively. apsB mutants are also partially defective in sexual reproduction.