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MatTypeEvol TERMINATED

Evolution of fungal mating-type chromosomes

Total Cost €

0

EC-Contrib. €

0

Partnership

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Project "MatTypeEvol" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITE PARIS-SUD 

Organization address
address: RUE GEORGES CLEMENCEAU 15
city: ORSAY CEDEX
postcode: 91405
website: www.u-psud.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Project website http://www.ese.u-psud.fr/article211.html
 Total cost 173˙076 €
 EC max contribution 173˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-03-01   to  2018-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITE PARIS-SUD FR (ORSAY CEDEX) coordinator 173˙076.00

Map

 Project objective

Sex chromosomes often show extensive areas of suppressed recombination and cytological differentiation, a well-documented phenomenon in animals and plants. Lack of recombination is expected to limit the efficacy of natural selection, leading to degeneration in gene content. Similarly, fungal mating-type chromosomes, which are responsible for controlling compatibility during mating, can display patterns of suppressed recombination encompassing up to 90% of the chromosome length. The mechanisms responsible for lack of recombination and consequent degeneration remain unclear. Here, I propose to use comparative genomics to investigate the patterns and underlying mechanisms involved in recombination suppression and genomic degeneration in Microbotryum, a model fungal system with a range of dimorphic mating-type chromosomes. I will complement the currently available high-quality genome assemblies for twenty species in the genus with three outgroups, which will allow to polarize all genomic data. I will then use the genomic dataset to: 1) test hypotheses on the origin of recombination suppression in fungal mating-type chromosomes; 2) study the evolution of non-recombining regions in fungal mating-type chromosomes, e.g., their size and age, and the existence of evolutionary strata; and 3) study the patterns and mechanisms of genomic degeneration in non-recombining regions, namely non-synonymous substitution accumulation, transposable elements, disrupted genes, and non-optimal codon usage. Results will not only shed light on the origins and consequences of suppressed recombination and genome degradation in fungal mating-type chromosomes, but will also yield unprecedented insights into the dynamics of sexual reproduction in eukaryotes and contribute for a unified view of the evolution of dimorphic chromosomes.

 Publications

year authors and title journal last update
List of publications.
2017 Sara Branco, Hélène Badouin, Ricardo C. Rodríguez de la Vega, Jérôme Gouzy, Fantin Carpentier, Gabriela Aguileta, Sophie Siguenza, Jean-Tristan Brandenburg, Marco A. Coelho, Michael E. Hood, Tatiana Giraud
Evolutionary strata on young mating-type chromosomes despite the lack of sexual antagonism
published pages: 7067-7072, ISSN: 0027-8424, DOI: 10.1073/pnas.1701658114
Proceedings of the National Academy of Sciences 114/27 2019-06-13

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