@article{mbs:/content/journal/micro/10.1099/00221287-71-3-581, author = "CARLILE, M. J. and ALFORD, J. A.", title = "The Lethal Interaction Following Plasmodial Fusion between Two Strains of the Myxomycete Physarum polycephalum", journal= "Microbiology", year = "1972", volume = "71", number = "3", pages = "581-590", doi = "https://doi.org/10.1099/00221287-71-3-581", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-71-3-581", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "Summary A lethal reaction followed fusion between plasmodia of two strains (15 and 29) of the Myxomycete Physarum polycephalum on a solid medium. Dead areas were seen about 5 h after fusion and increased in size rapidly. Strain 29 was often wholly destroyed but strain 15 commonly survived and subsequently reinvaded the dead areas. Large plasmodia of 29 were destroyed by fusion with small plasmodia of 15, but large plasmodia of 15 survived fusion with small plasmodia of 29. The lethal reaction did not normally occur under conditions of suboptimal nutrition, but disappearance of strain 29 still took place. It is suggested that protoplasm of strain 15 can eliminate nuclei of strain 29, but that strain 29 has little or no ability to tolerate or eliminatenuclei of strain 15. ", }