Characterization of an Aspergillus nidulans mutant with abnormal distribution of nuclei in hyphae, metulae, phialides and conidia

The V10 deteriorated variant of Aspergillus nidulans has hyphae, metulae, phialides and conidia with abnormal nuclear distributions. The alterations observed were: increase in the number of nuclei in hyphae, metulae and phialides, presence of anucleate, uninucleate and multinucleate conidia, abnorma...

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Bibliographic Details
Published in:FEMS microbiology letters 1998-09, Vol.166 (1), p.49-55
Main Authors: Queiroz, M.V. de, Azevedo, J.L. de
Format: Article
Language:English
Subjects:
Aspergillus nidulans
Aspergillus nidulans - genetics
Aspergillus nidulans - growth & development
Aspergillus nidulans - ultrastructure
Biological and medical sciences
Cell Nucleus - ultrastructure
Chromosome Mapping
Conidia
Conidial development
Fundamental and applied biological sciences. Psychology
Genes, Fungal
Genetic Linkage
Genetic Variation
Hyphae
Microbiology
Morphology
Mutation
Mycology
Nuclear distribution
Nuclei
Pathogenicity, host-agent relations, miscellaneous strains, epidemiology
Phenotype
plant biochemistry
plant breeding
plant genetics
plant physiology
Sodium chloride
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Summary:The V10 deteriorated variant of Aspergillus nidulans has hyphae, metulae, phialides and conidia with abnormal nuclear distributions. The alterations observed were: increase in the number of nuclei in hyphae, metulae and phialides, presence of anucleate, uninucleate and multinucleate conidia, abnormal vegetative growth and defective conidiation. When 0.5 M NaCl was added to the medium, an increase in the number of conidia was observed but their morphology and number of nuclei were not modified. The gene responsible for these alterations was named anuA1. The anuA1 gene is located on linkage group VII and is possibly involved in nuclear migration to hyphae, metulae, phialides and conidia.
ISSN:0378-1097
1574-6968
DOI:10.1111/j.1574-6968.1998.tb13182.x