KlapsteKremerBurgEtAl2020

Reference

Klápště, J., Kremer, A., Burg, K., Garnier-Géré, P., El-Dien, O.G., Ratcliffe, B., El-Kassaby, Y.A., Porth, I. (2020) Quercus species divergence is driven by natural selection on evolutionarily less integrated traits. Heredity. (URL )

Abstract

Functional traits are organismal attributes that can respond to environmental cues, thereby providing important ecological functions. In addition, an organism’s potential for adaptation is defined by the patterns of covariation among groups of functionally related traits. Whether an organism is evolutionarily constrained or has the potential for adaptation is based on the phenotypic integration or modularity of these traits. Here, we revisited leaf morphology in two European sympatric white oaks (Quercus petraea (Matt.) Liebl. and Quercus robur L.), sampling 2098 individuals, across much of their geographical distribution ranges. At the phenotypic level, leaf morphology traditionally encompasses discriminant attributes among different oak species. Here, we estimated in situ heritability, genetic correlation, and integration across such attributes. Also, we performed Selection Response Decomposition to test these traits for potential differences in oak species’ evolutionary responses. Based on the uncovered functional units of traits (modules) in our study, the morphological module “leaf size gradient” was highlighted among functionally integrated traits. Equally, this module was defined in both oaks as being under “global regulation” in vegetative bud establishment and development. Lamina basal shape and intercalary veins’ number were not, or, less integrated within the initially defined leaf functional unit, suggesting more than one module within the leaf traits’ ensemble. Since these traits generally show the greatest species discriminatory power, they potentially underwent effective differential response to selection among oaks. Indeed, the selection of these traits could have driven the ecological preferences between the two sympatric oaks growing under different microclimates.

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@ARTICLE { KlapsteKremerBurgEtAl2020,
    AUTHOR = { Klápště, J. and Kremer, A. and Burg, K. and Garnier-Géré, P. and El-Dien, O.G. and Ratcliffe, B. and El-Kassaby, Y.A. and Porth, I. },
    TITLE = { Quercus species divergence is driven by natural selection on evolutionarily less integrated traits },
    DOI = { 10.1038/s41437-020-00378-6 },
    ISSN = { 1365-2540 },
    URL = { https://doi.org/10.1038/s41437-020-00378-6 },
    ABSTRACT = { Functional traits are organismal attributes that can respond to environmental cues, thereby providing important ecological functions. In addition, an organism’s potential for adaptation is defined by the patterns of covariation among groups of functionally related traits. Whether an organism is evolutionarily constrained or has the potential for adaptation is based on the phenotypic integration or modularity of these traits. Here, we revisited leaf morphology in two European sympatric white oaks (Quercus petraea (Matt.) Liebl. and Quercus robur L.), sampling 2098 individuals, across much of their geographical distribution ranges. At the phenotypic level, leaf morphology traditionally encompasses discriminant attributes among different oak species. Here, we estimated in situ heritability, genetic correlation, and integration across such attributes. Also, we performed Selection Response Decomposition to test these traits for potential differences in oak species’ evolutionary responses. Based on the uncovered functional units of traits (modules) in our study, the morphological module “leaf size gradient” was highlighted among functionally integrated traits. Equally, this module was defined in both oaks as being under “global regulation” in vegetative bud establishment and development. Lamina basal shape and intercalary veins’ number were not, or, less integrated within the initially defined leaf functional unit, suggesting more than one module within the leaf traits’ ensemble. Since these traits generally show the greatest species discriminatory power, they potentially underwent effective differential response to selection among oaks. Indeed, the selection of these traits could have driven the ecological preferences between the two sympatric oaks growing under different microclimates. },
    JOURNAL = { Heredity },
    OWNER = { Luc },
    REFID = { Klápště2020 },
    YEAR = { 2020 },
}

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