Apr 7, 2020

Invasion and maintenance of spore killing in ascomycete fungi

BioRxiv : the Preprint Server for Biology
Ivain martinossiH. Johannesson

Abstract

Meiotic drivers are common selfish genetic elements that have the ability to become over-represented among the products of meiosis, a transmission advantage that allows them to spread in a population even when they impose fitness costs on their host organisms. The ability of a meiotic driver to invade a population, and to subsequently reach fixation or coexist in a stable polymorphism can be affected by features of the life-cycle, behavior, and population structure of their host organism. Here, we present a mathematical model that addresses several unexplored aspects of meiotic drive population genetics, by focusing on spore killing, a type of drive specific to fungi. Our model can be adapted to different fungal life-cycles, and is used here to specifically analyze the cases of two well-studied genera of filamentous ascomycetes known to harbor spore killing elements, Podospora and Neurospora. We show how ploidy level, rate of selfing, and efficiency of spore killing affect the invasion probability of a driving allele and conditions for its coexistence in a stable polymorphism. Our theoretical findings are discussed in light of recent empirical findings in these two systems.

  • References
  • Citations

References

  • We're still populating references for this paper, please check back later.
  • References
  • Citations

Citations

  • This paper may not have been cited yet.

Mentioned in this Paper

Visual System
Size
Magnetic Resonance Imaging
Neurons
Spatial Distribution
Visual Fields
Structure of Cortex of Kidney
Neuronal
FMRI
Local

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.