%0 Journal Article %A Upshall, A. %T Naturally Occurring Diploid Isolates of Aspergillus nidulans %D 1981 %J Microbiology, %V 122 %N 1 %P 7-10 %@ 1465-2080 %R https://doi.org/10.1099/00221287-122-1-7 %I Microbiology Society, %X Six wild isolates belonging to heterokaryon compatibility group A of the Birmingham Aspergillus nidulans collection were shown to be diploid. Five were proven heterozygous for a naturally occurring conditional lethal haploid genotype. It is considered unlikely that these diploids arose by mutation in storage. Consequendy, somatic diploidy is a regular occurrence in the natural population of this saprophytic species. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-122-1-7