%0 Journal Article %A Nicolas, A. %A Arnaise, S. %A Haedens, V. %A Rossignol, J. L. %T Ascospore Mutants and Genetic Map of Ascobolus immersus Stock 28 %D 1981 %J Microbiology, %V 125 %N 2 %P 257-272 %@ 1465-2080 %R https://doi.org/10.1099/00221287-125-2-257 %I Microbiology Society, %X Three hundred and seventy mutants of the ascomycete Ascobolus immersus stock 28 were isolated. They were assigned to at least 75 loci. Mutations in 33 loci affect ascospore morphology: 19 of these loci affect pigmentation, 5 affect pigment distribution and 9 affect shape. The reliability of various phenotypes and the role of multigenic control on ascospore morphogenesis are discussed. Other mutations affect the mycelial growth rate or morphology and sporulation. A total of 56 loci have been mapped in 13 linkage groups corresponding to at least nine chromosomes. Using an intermediary strain, successful crosses between two intersterile stocks of Ascobolus (28 and 50) demonstrated that 12 pairs of mutants isolated in each stock correspond to 12 homologous loci. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-125-2-257