4 Works

Data from: Comparison of the genetic determinism of two key phenological traits, flowering and maturity dates, in three Prunus species: peach, apricot and sweet cherry

Patrick Lambert, David Ruiz, Luca Dondini, Eudald Illa, Jean-Marc Audergon, Stefano Tartarini, Philippe Letourmy, Elisabeth Dirlewanger, José Quéro-Garcia, Loïck Le Dantec, Bénédicte Quilot-Turion & Pere Arus
The present study investigates the genetic determinism of flowering and maturity dates, two traits highly affected by global climate change. Flowering and maturity dates were evaluated on five progenies from three Prunus species, peach, apricot and sweet cherry, during three to eight years. Quantitative trait locus (QTL) detection was performed separately for each year and also by integrating data from all years together. High heritability estimates were obtained for flowering and maturity dates. Several QTLs...

Data from: Virus adaptation to quantitative plant resistance: erosion or breakdown?

J. Montarry, E. Cartier, M. Jacquemond, A. Palloix & B. Moury
Adaptation of populations to new environments is frequently costly due to trade-offs between life history traits, and consequently, parasites are expected to be locally adapted to sympatric hosts. Also, during adaptation to the host, an increase of parasite fitness could have direct consequences on its aggressiveness (i.e. the quantity of damages caused to the host by the virus). These two phenomena have been observed in the context of pathogen adaptation to host qualitative and monogenic...

Data from:Insight into the durability of plant resistance to aphids from a demo-genetic study of Aphis gossypii in melon crops

Sophie Thomas, Flavie Vanlerberghe-Masutti, Pascale Mistral, Anne Loiseau & Nathalie Boissot
Resistance breakdown has been observed following the deployment of plant cultivars resistant to pests. Assessing the durability of a resistance requires long-term experiments at least at a regional scale. We collected such data for melon resistance conferred by the Vat gene cluster to melon aphids. We examined landscape-level populations of Aphis gossypii collected in 2004–2015, from melon-producing regions with and without the deployment of Vat resistance and with different climates. We conducted demo-genetic analyses of...

Data from: Quantitative trait loci from the host genetic background modulate the durability of a resistance gene: a rational basis for sustainable resistance breeding in plants

Alain Palloix, Julie Quenouille, Estelle Paulhiac & Benoit Moury
The combination of major resistance genes with quantitative resistance factors is hypothesized as a promising breeding strategy to preserve the durability of resistant cultivar, as recently observed in different pathosystems. Using the pepper (Capsicum annuum)/Potato virus Y (PVY, genus Potyvirus) pathosystem, we aimed at identifying plant genetic factors directly affecting the frequency of virus adaptation to the major resistance gene pvr23 and at comparing them with genetic factors affecting quantitative resistance. The resistance breakdown frequency...

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Affiliations

  • Genetics and Improvement of Fruit and Vegetables
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  • University of Bologna
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  • French National Institute for Agricultural Research
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  • Autonomous University of Barcelona
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  • Centre de Biologie et de Gestion des Populations
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  • Centre de Coopération Internationale en Recherche Agronomique pour le Développement
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