An understanding of plant domestication history provides insights into general mechanisms of plant adaptation and diversification and can guide breeding programs that aim to improve cultivated species. Cultivated tree peonies (genus Paeonia L.) are among the most popular ornamental plants in the world, yet the history of their domestication is still unresolved. Here, we explored whether the domestication in China of historically cultivated peonies, i.e., the common and flare cultivated tree peonies, was a single...
Data from: Sibling competition arena: selfing and a competition arena can combine to constitute a barrier to gene flow in sympatryAmanda Kyle Gibson, Michael E. Hood & Tatiana Giraud
Closely-related species coexisting in sympatry provide critical insight into the mechanisms underlying speciation and the maintenance of genetic divergence. Selfing may promote reproductive isolation by facilitating local adaptation, causing reduced hybrid fitness in parental environments. Here, we propose a novel mechanism by which selfing can further impair interspecific gene flow: selfing may act to ensure that non-hybrid progeny systematically co-occur whenever hybrid genotypes are produced. Under a competition arena, the fitness differentials between non-hybrid and...
Data from: Inference of domestication history and differentiation between early- and late-flowering varieties in pearl milletYann Dussert, Alodie Snirc & Thierry Robert
Pearl millet (Pennisetum glaucum) is a staple crop in Sahelian Africa. Farmers usually grow varieties with different cycle lengths and complementary functions in Sahelian agrosystems. Both the level of genetic differentiation of these varieties and the domestication history of pearl millet have been poorly studied. We investigated the neutral genetic diversity and population genetic structure of early- and late-flowering domesticated and wild pearl millet populations using 18 microsatellite loci and 8 nucleotide sequences. Strikingly, early-...
Data from: Dearth of polymorphism associated with a sustained response to selection for flowering time in maizeEleonore Durand, Maud I. Tenaillon, Xavier Raffoux, Stéphanie Thépot, Matthieu Falque, Philippe Jamin, Aurélie Bourgais, Adrienne Ressayre & Christine Dillmann
Background: Long term selection experiments bring unique insights on the genetic architecture of quantitative traits and their evolvability. Indeed, they are utilized to (i) monitor changes in allele frequencies and assess the effects of genomic regions involved traits determinism; (ii) evaluate the role of standing variation versus new mutations during adaptation; (iii) investigate the contribution of non allelic interactions. Here we describe genetic and phenotypic evolution of two independent Divergent Selection Experiments (DSEs) for flowering...
Data from: Migration patterns and changes in population biology associated with the worldwide spread of the oilseed rape pathogen Leptosphaeria maculansAzita Dilmaghani, Pierre Gladieux, Lilian Gout, Tatiana Giraud, Patrick C. Brunner, Anna Stachowiak, Marie-Hélène Balesdent & Thierry Rouxel
Pathogen introductions into novel areas can lead to the emergence of new fungal diseases of plants. Understanding the origin, introduction pathways, possible changes in reproductive system and population size of fungal pathogens is essential in devising an integrated strategy for the control of these diseases. We used minisatellite markers to infer the worldwide invasion history of the fungal plant pathogen Leptosphaeria maculans, which causes stem canker (blackleg) of oilseed and vegetable brassicas. Clustering analyses partitioned...
Data from: Migratory connectivity and effects of winter temperatures on migratory behaviour of the European robin Erithacus rubecula: a continent-wide analysisRoberto Ambrosini, José Cuervo, Chris Du Feu, Wolfgang Fiedler, Musitelli Federica, Diego Rubolini, Beatrice Sicurella, Fernando Spina, Nicola Saino, Anders Møller & Federica Musitelli
1. Many partially migratory species show phenotypically divergent populations in terms of migratory behaviour, with climate hypothesized to be a major driver of such variability through its differential effects on sedentary and migratory individuals. 2. Based on long-term (1947–2011) bird ringing data, we analysed phenotypic differentiation of migratory behaviour among populations of the European robin Erithacus rubecula across Europe. 3. We showed that clusters of populations sharing breeding and wintering ranges varied from partial (British...
Data from: Finding candidate genes under positive selection in non-model species: examples of genes involved in host specialization in pathogensGabriela Aguileta, Juliette Lengelle, Sylvain Marthey, Hélène Chiapello, François Rodolphe, Annie Gendrault, Roxana Yockteng, Elodie Vercken, Benjamin Devier, Michael Fontaine, Patrick Wincker, Carole Dossat, Corinne Cruaud, Arnaud Couloux & Tatiana Giraud
Numerous genes in diverse organisms have been shown to be under positive selection, especially genes involved in reproduction, adaptation to contrasting environments, hybrid inviability, and host-pathogen interactions. Looking for genes under positive selection in pathogens has been a priority in efforts to investigate coevolution dynamics and to develop vaccines or drugs. To elucidate the functions involved in host specialization, here we aimed at identifying candidate sequences that could have evolved under positive selection among closely...
Extreme environmental perturbations are rare, but may have important evolutionary consequences. Responses to current perturbations may provide important information about the ability of living organisms to cope with similar conditions in the evolutionary past. Radioactive contamination from Chernobyl constitutes one such extreme perturbation, with significant but highly variable impact on local population density and mutation rates of different species of animals and plants. We explicitly tested the hypothesis that species with strong impacts of radiation...
Migration is a complex trait although little is known about genetic correlations between traits involved in such migration syndromes. To assess migratory responses to climate change, we need information on genetic constraints on evolutionary potential of arrival dates in migratory birds. Using two long term data sets on barn swallows Hirundo rustica (from Spain and Denmark), we show for the first time in wild populations that spring arrival dates are phenotypically and genetically correlated with...
Data from: Isolation by time and habitat and coexistence of distinct host races of the common cuckooAnders P Møller, Anton Antonov, Bard G Stokke, Frode Fossøy, Arne Moksnes, Eivin Røskaft & Fugo Takasu
Isolation by time occurs when different populations of a single species reproduce at different times and thereby reduce the probability of interbreeding, potentially causing divergent adaptation to timing of reproduction, eventually resulting in ecological species separated by timing of reproduction. We analyzed extensive data on timing of reproduction by different host races of the common cuckoo Cuculus canorus that is an obligate brood parasite laying eggs in the nests of many different species of passerine...
Data from: The genetic structure of the plant pathogenic fungus Melampsora larici-populina on its wild host is extensively impacted by host domesticationConstance Xhaard, Bénédicte Fabre, Axelle Andrieux, Pierre Gladieux, Benoit Barrès, Pascal Frey & Fabien Halkett
Wild and cultivated plants represent very different habitats for pathogens, especially when cultivated plants bear qualitative resistance genes. Here, we investigated to what extent the population genetic structure of a plant pathogenic fungus collected on its wild host can be impacted by the deployment of resistant cultivars. We studied one of the main poplar diseases, poplar rust, caused by the fungus Melampsora larici-populina. A thousand fifty individuals sampled from several locations in France were phenotyped...
Data from: Testing the impact of calibration on molecular divergence times using a fossil-rich group: the case of Nothofagus (Fagales)Hervé Sauquet, Simon Y. W. Ho, Maria A. Gandolfo, Gregory J. Jordan, Peter Wilf, David J. Cantrill, Michael J. Bayly, Lindell Bromham, Gillian K. Brown, Raymond J. Carpenter, Daphne M. Lee, Daniel J. Murphy, J. M. Kale Sniderman & Frank Udovicic
Although temporal calibration is widely recognized as critical for obtaining accurate divergence-time estimates using molecular dating methods, few studies have evaluated the variation resulting from different calibration strategies. Depending on the information available, researchers have often used primary calibrations from the fossil record or secondary calibrations from previous molecular dating studies. In analyses of flowering plants, primary calibration data can be obtained from macro- and mesofossils (e.g., leaves, flowers, and fruits) or microfossils (e.g., pollen)....
University of Paris-Sud87
French National Centre for Scientific Research26
French National Institute for Agricultural Research6
Ecologie, Systématique et Evolution4
University of Extremadura4
Australian National University4
University of South Carolina4
Biology and Genetics of Plant-Pathogen Interactions3
University of Adelaide3