Methylammonium Resistance in Aspergillus nidulans
نویسندگان
چکیده
منابع مشابه
Methylammonium resistance in Aspergillus nidulans.
Mutants of Aspergillus nidulans resistant to methylammonium toxicity are simultaneously derepressed in the presence of ammonium for apparently all ammonium-repressible activities. Enzyme assays directly demonstrate derepression of nitrate, nitrite, and hydroxylamine reductases, xanthine dehydrogenase, urate oxidase, and allantoinase, whereas in vivo tests show that ammonium and methylammonium r...
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Resistant strains of Aspergillus nidulans were obtained by one-step selection on high concentrations of various inhibitors; each strain was mutant in a different gene conferring resistance to actidione (Act), p-fluorophenylalanine (p f ) , teoquil ( te) , iodoacetate (Iod) or malachite green (mg). Some mutant alleles have been firmly, others tentatively, located. For comparative purposes attemp...
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Mitosis in growing hyphae of haploid and diploid Aspergillus nidulans has been studied with the light microscope in Helly-fixed preparations. At the periphery of the nucleus a sharply defined granule is invariably found which has strong affinity for acid fuchsin. Mitosis begins with the duplication of this granule and the development inside the nucleus of a gradually lengthening fibre between t...
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Resistance to antifungal agents is a recurring and growing problem among patients with systemic fungal infections. UV-induced Aspergillus nidulans mutants resistant to terbinafine have been identified, and we report here the characterization of one such gene. A sib-selected, 6.6-kb genomic DNA fragment encodes a salicylate 1-monooxygenase (salA), and a fatty acid synthase subunit (fasC) confers...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1969
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.98.3.1284-1293.1969