Mutations in nirA gene of Aspergillus nidulans and nitrogen metabolism
β Scribed by RAND, KEITH N.; ARST, HERBERT N.
- Book ID
- 109709270
- Publisher
- Nature Publishing Group
- Year
- 1978
- Tongue
- English
- Weight
- 347 KB
- Volume
- 272
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/272732a0
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The proline utilisation gene cluster of Aspergillus nidulans can be repressed efficiently only when both repressing nitrogen and repressing carbon sources are present. We show that two cis-acting mutations in this cluster permit the efficient transcription of the prnB gene under repressing condition
Three extranuclear mitochondrial mutations in Aspergillus nidulans, (oliA1), (camA1) and (cs67), were used as markers in sexual crosses to provide information on the frequencies of transmission and recombination of the mitochondrial genome. Any individual perithecium contained ascospores of only one