Modeling the consequences of the dikaryotic life cycle of mushroom-forming fungi on genomic conflict.

ABSTRACT: Generally, sexual organisms contain two haploid genomes, one from each parent, united in a single diploid nucleus of the zygote which links their fate during growth. A fascinating exception to this is Basidiomycete fungi, where the two haploid genomes remain separate in a dikaryon, retaining the option to fertilize subsequent monokaryons encountered. How the ensuing nuclear competition influences the balance of selection within and between individuals is largely unexplored. We test the consequences of the dikaryotic life cycle for mating success and mycelium-level fitness components. We assume a trade-off between mating fitness at the level of the haploid nucleus and fitness of the fungal mycelium. We show that the maintenance of fertilization potential by dikaryons leads to a higher propo

SUBMITTER: Auxier B 

PROVIDER: S-EPMC9084891 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature