Quantitative trait loci of tolerance to waterlogging in a European oak (Quercus robur L.): physiological relevance and temporal effect patterns

Authors

  • JULIEN PARELLE,

    1. UMR INRA-UHP 1137, Ecologie et Ecophysiologie Forestières, Centre INRA de Nancy 54280 Champenoux, et Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy, France and
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  • MARION ZAPATER,

    1. UMR INRA-UHP 1137, Ecologie et Ecophysiologie Forestières, Centre INRA de Nancy 54280 Champenoux, et Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy, France and
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  • CAROLINE SCOTTI-SAINTAGNE,

    1. UMR BIOGECO 1202, INRA, Equipe de Génétique, 69 route d'Arcachon 33612 Cestas, France
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    • *

      Present address: UMR INRA-ENGREF-CIRAD-CNRS-UAG, Ecologie des forêts de Guyane (ECOFOG), Campus Agronomique-BP 709, 97387 Kourou cedex, Guyane française.

  • ANTOINE KREMER,

    1. UMR BIOGECO 1202, INRA, Equipe de Génétique, 69 route d'Arcachon 33612 Cestas, France
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  • YVES JOLIVET,

    1. UMR INRA-UHP 1137, Ecologie et Ecophysiologie Forestières, Centre INRA de Nancy 54280 Champenoux, et Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy, France and
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  • ERWIN DREYER,

    1. UMR INRA-UHP 1137, Ecologie et Ecophysiologie Forestières, Centre INRA de Nancy 54280 Champenoux, et Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy, France and
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  • OLIVER BRENDEL

    Corresponding author
    1. UMR INRA-UHP 1137, Ecologie et Ecophysiologie Forestières, Centre INRA de Nancy 54280 Champenoux, et Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy, France and
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Oliver Brendel. Fax: 0033 383 394069; e-mail: brendel@nancy.inra.fr

ABSTRACT

Quercus robur L. is a mid-European broadleaved tree species that grows readily on temporary waterlogged soils. An experiment aiming to identify potential markers of tolerance to waterlogging in this species and to assess the degree of genetic control over the corresponding traits was conducted. Quantitative trait loci (QTL) were assessed in an F1 progeny for responses to waterlogging, and the relevance of the observed traits as markers of tolerance was investigated using a precise description of the time course of their expression. Five significant QTL involved in the response to waterlogging were identified. In particular, QTL were detected for the development of hypertrophied lenticels and for the degree of leaf epinasty, but not for the formation of adventitious roots. A multi-environment QTL model allowed a detailed description of the time course (7 weeks) of the allelic substitution effect of some of these QTL. Correlation clustering identified significant clusters of QTL, at inter-trait as well as at intra-trait level. These clusters suggest the occurrence of a genetically controlled response cascade to waterlogging.

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