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Maintaining heterokaryosis in pseudo-homothallic fungi

Among all the strategies displayed by fungi to reproduce and propagate, some species have adopted a peculiar behavior called pseudo-homothallism. Pseudo-homothallic fungi are true heterothallics, i.e., they need 2 genetically-compatible partners to mate, but they produce self-fertile mycelium in whi...

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Detalles Bibliográficos
Autores principales: Grognet, Pierre, Silar, Philippe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594319/
https://www.ncbi.nlm.nih.gov/pubmed/26479494
http://dx.doi.org/10.4161/19420889.2014.994382
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author Grognet, Pierre
Silar, Philippe
author_facet Grognet, Pierre
Silar, Philippe
author_sort Grognet, Pierre
collection PubMed
description Among all the strategies displayed by fungi to reproduce and propagate, some species have adopted a peculiar behavior called pseudo-homothallism. Pseudo-homothallic fungi are true heterothallics, i.e., they need 2 genetically-compatible partners to mate, but they produce self-fertile mycelium in which the 2 different nuclei carrying the compatible mating types are present. This lifestyle not only enables the fungus to reproduce without finding a compatible partner, but also to cross with any mate it may encounter. However, to be fully functional, pseudo-homothallism requires maintaining heterokaryosis at every stage of the life cycle. We recently showed that neither the structure of the mating-type locus nor hybrid-enhancing effect due to the presence of the 2 mating types accounts for the maintenance of heterokaryosis in the pseudo-homothallic fungus P. anserina. In this addendum, we summarize the mechanisms creating heterokaryosis in P. anserina and 2 other well-known pseudo-homothallic fungi, Neurospora tetrasperma and Agaricus bisporus. We also discuss mechanisms potentially involved in maintaining heterokaryosis in these 3 species.
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spelling pubmed-45943192015-10-16 Maintaining heterokaryosis in pseudo-homothallic fungi Grognet, Pierre Silar, Philippe Commun Integr Biol Article Addendum Among all the strategies displayed by fungi to reproduce and propagate, some species have adopted a peculiar behavior called pseudo-homothallism. Pseudo-homothallic fungi are true heterothallics, i.e., they need 2 genetically-compatible partners to mate, but they produce self-fertile mycelium in which the 2 different nuclei carrying the compatible mating types are present. This lifestyle not only enables the fungus to reproduce without finding a compatible partner, but also to cross with any mate it may encounter. However, to be fully functional, pseudo-homothallism requires maintaining heterokaryosis at every stage of the life cycle. We recently showed that neither the structure of the mating-type locus nor hybrid-enhancing effect due to the presence of the 2 mating types accounts for the maintenance of heterokaryosis in the pseudo-homothallic fungus P. anserina. In this addendum, we summarize the mechanisms creating heterokaryosis in P. anserina and 2 other well-known pseudo-homothallic fungi, Neurospora tetrasperma and Agaricus bisporus. We also discuss mechanisms potentially involved in maintaining heterokaryosis in these 3 species. Taylor & Francis 2015-08-31 /pmc/articles/PMC4594319/ /pubmed/26479494 http://dx.doi.org/10.4161/19420889.2014.994382 Text en © Pierre Grognet and Philippe Silar. Published with license by Taylor and Francis Group, LLC Government non-exclusive license to publish http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
spellingShingle Article Addendum
Grognet, Pierre
Silar, Philippe
Maintaining heterokaryosis in pseudo-homothallic fungi
title Maintaining heterokaryosis in pseudo-homothallic fungi
title_full Maintaining heterokaryosis in pseudo-homothallic fungi
title_fullStr Maintaining heterokaryosis in pseudo-homothallic fungi
title_full_unstemmed Maintaining heterokaryosis in pseudo-homothallic fungi
title_short Maintaining heterokaryosis in pseudo-homothallic fungi
title_sort maintaining heterokaryosis in pseudo-homothallic fungi
topic Article Addendum
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594319/
https://www.ncbi.nlm.nih.gov/pubmed/26479494
http://dx.doi.org/10.4161/19420889.2014.994382
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