Spermatium-Trighogyne Relationship in Gelasinospora calospora var. autosteira
- 1 May 1959
- Vol. 51 (3) , 416-428
- https://doi.org/10.2307/3756061
Abstract
The role of spermatia in the process of plasmogamy in the heterothallic fungus Gelasinospora calospora var. autosteira has been studied. From observations made on material killed at various intervals following spermatization, it is concluded that this fungus produces trichogynes, which appear to grow toward the spermatia, presumably through a tropic response. Trichogynes were found to fuse with spermatia. The trichogynes were found to form branched systems, extending at least 1 mm from the proto-perithecium. The receptive region appears to be near the tip of the trichogyne. Migration of nuclei from spermatia into trichogynes was not confirmed by cytological study, but mycelia derived from ascospores removed from single asci were of both mating types. Segregation of mating types occurred in each ascus in as near a 1 1 ratio as it was possible to obtain with the number of viable spores isolated. It is thus possible to conclude that the spermatial nucleus is involved in karyogamy and contributes genetic material.This publication has 0 references indexed in Scilit: