Self-fertility in Chromocrea spinulosa is a consequence of direct repeat-mediated loss of MAT1-2, subsequent imbalance of nuclei differing in mating type, and recognition between unlike nuclei in a common cytoplasm.
The filamentous fungus Chromocrea spinulosa (Trichoderma spinulosum) exhibits both self-fertile (homothallic) and self-sterile (heterothallic) sexual reproductive behavior.Self-fertile strains produce progeny cohorts that are 50% homothallic, 50% heterothallic.Heterothallic progeny can mate only with homothallic strains, and progeny also segregate