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Consequences of reproductive mode on genome evolution in fungi
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
2011 (English)In: Fungal Genetics and Biology, ISSN 1087-1845, E-ISSN 1096-0937, Vol. 48, no 7, 661-667 p.Article, review/survey (Refereed) Published
Abstract [en]

An organism's reproductive mode is believed to be a major factor driving its genome evolution. In theory, sexual inbreeding and asexuality are associated with lower effective recombination levels and smaller effective population sizes than sexual outbreeding, giving rise to reduced selection efficiency and genetic hitchhiking. This, in turn, is predicted to result in the accumulation of deleterious mutations and other genomic changes, for example the accumulation of repetitive elements. Empirical data from plants and animals supporting/refuting these theories are sparse and have yielded few conclusive results. A growing body of data from the fungal kingdom, wherein reproductive behavior varies extensively within and among taxonomic groups, has provided new insights into the role of mating systems (e.g., homothallism, heterothallism, pseudohomothallism) and asexuality, on genome evolution. Herein, we briefly review the theoretical relationships between reproductive mode and genome evolution and give examples of empirical data on the topic derived to date from plants and animals. We subsequently focus on the available data from fungi, which suggest that reproductive mode alters the rates and patterns of genome evolution in these organisms, e.g., protein evolution, mutation rate, codon usage, frequency of genome rearrangements and repetitive elements, and variation in chromosome size.

Place, publisher, year, edition, pages
2011. Vol. 48, no 7, 661-667 p.
Keyword [en]
Genome evolution, Mating systems, Mutations, Dead end theory, Neurospora
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-155446DOI: 10.1016/j.fgb.2011.02.005ISI: 000291141200002OAI: oai:DiVA.org:uu-155446DiVA: diva2:426533
Available from: 2011-06-23 Created: 2011-06-22 Last updated: 2017-12-11Bibliographically approved

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Nygren, KristiinaJohannesson, Hanna

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