When sex may or may not happen – The impact of asymmetrical meiosis on the evolutionary fate of genes in polyploid roses

Rosa represents an ecologically important genus with widespread hybridization and polyploidy. Moreover, the European dogroses are enigmatic in having a unique hemisexual reproduction: due to their asymmetrical meiosis (Canina meiosis) they combine features of both sexual and asexual reproduction in the same nucleus. Here we propose to explore Rosa genomes to investigate the origin of the Canina meiosis, its differential effects on chromosome and evolution mutational load compared to fully sexual rose species. Through comparative genomics we will trace the respective contributions of diploid roses to the genome of modern polyploids and determine allelic divergence of single copy genes in hemisexual and sexual species. In addition we will develop new cytogenetic markers to elucidate different phases of asymmetrical meiosis and their putative epigenetic control. Our aims will be tackled by the application of advanced computational methods allowing genome wide analyses of nuclear single copy genes using phylogenetic and population genetic approaches. Experiments will also involve Fluorescence-in-situ-Hybridization (FISH), chromatin immunoprecipitation and -histochemical labelling

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Data and Resources

Additional Info

Field Value
Geographic coverage
Geographic description France: Alpes-de-Haute-Provence, Doubs, Eure, Haut-Rhin, Seine-Maritime, Vosges Germany, Czech Republic, Italy, Switzerland ex cult. Rosarium Sangerhausen (Sangerhausen, Germany): Rosa spp. from northern hemisphere
Bounding coordinates
North: 70.0
West: 0.0
East: 359.99
South: 15.0
Temporal coverage
Time period
Begin: January 1, 2021
End: December 31, 2022
Taxonomic coverage
Genus Rosa
General taxonomic description Rosa spp.
Other info
Last Updated May 12, 2023, 14:04 (UTC)
Created April 20, 2023, 11:57 (UTC)

Responsible parties

Creator and point of contact
Name Veit Herklotz
Organization affiliations
Senckenberg Museum für Naturkunde Görlitz

Am Museum, 1
2826 Görlitz

Associated party
Name Ritz Christiane M.
Organization affiliations
Senckenberg Museum für Naturkunde Görlitz

Am Museum, 1
2826 Görlitz

Role Principal investigator

Associated party
Name Ales Kovarik
Role Principal investigator

Research data management planning

Types of data that will be / are / were created during the project Molecular Sequence Data
Estimated volume of created data <10GB
Data will be stored at (long-term archived) NCBI

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