DepardieuGirardinNadeauEtAl2020

Référence

Depardieu, C., Girardin, M.P., Nadeau, S., Lenz, P., Bousquet, J., Isabel, N. (2020) Adaptive genetic variation to drought in a widely distributed conifer suggests a potential for increasing forest resilience in a drying climate. New Phytologist, 227(2):427-439. (Scopus )

Résumé

Drought intensity and frequency are increasing under global warming, with soil water availability now being a major factor limiting tree growth in circumboreal forests. Still, the adaptive capacity of trees in the face of future climatic regimes remains poorly documented. Using 1481 annually resolved tree-ring series from 29-yr-old trees, we evaluated the drought sensitivity of 43 white spruce (Picea glauca (Moench) Voss) populations established in a common garden experiment. We show that genetic variation among populations in response to drought plays a significant role in growth resilience. Local genetic adaptation allowed populations from drier geographical origins to grow better, as indicated by higher resilience to extreme drought events, compared with populations from more humid geographical origins. The substantial genetic variation found for growth resilience highlights the possibility of selecting for drought resilience in boreal conifers. As a major research outcome, we showed that adaptive genetic variation in response to changing local conditions can shape drought vulnerability at the intraspecific level. Our findings have wide implications for forest ecosystem management and conservation. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust

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@ARTICLE { DepardieuGirardinNadeauEtAl2020,
    AUTHOR = { Depardieu, C. and Girardin, M.P. and Nadeau, S. and Lenz, P. and Bousquet, J. and Isabel, N. },
    JOURNAL = { New Phytologist },
    TITLE = { Adaptive genetic variation to drought in a widely distributed conifer suggests a potential for increasing forest resilience in a drying climate },
    YEAR = { 2020 },
    NOTE = { cited By 1 },
    NUMBER = { 2 },
    PAGES = { 427-439 },
    VOLUME = { 227 },
    ABSTRACT = { Drought intensity and frequency are increasing under global warming, with soil water availability now being a major factor limiting tree growth in circumboreal forests. Still, the adaptive capacity of trees in the face of future climatic regimes remains poorly documented. Using 1481 annually resolved tree-ring series from 29-yr-old trees, we evaluated the drought sensitivity of 43 white spruce (Picea glauca (Moench) Voss) populations established in a common garden experiment. We show that genetic variation among populations in response to drought plays a significant role in growth resilience. Local genetic adaptation allowed populations from drier geographical origins to grow better, as indicated by higher resilience to extreme drought events, compared with populations from more humid geographical origins. The substantial genetic variation found for growth resilience highlights the possibility of selecting for drought resilience in boreal conifers. As a major research outcome, we showed that adaptive genetic variation in response to changing local conditions can shape drought vulnerability at the intraspecific level. Our findings have wide implications for forest ecosystem management and conservation. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust },
    AFFILIATION = { Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055, rue du PEPS, PO Box 10380, Stn. Sainte-Foy, Québec, QC G1V 4C7, Canada; Canada Research Chair in Forest Genomics, Institute for Systems and Integrative Biology, Université Laval, Québec, QC G1V 0A6, Canada; Natural Resources Canada, Canadian Forest Service, Canadian Wood Fibre Centre, 1055, rue du PEPS, PO Box 10380, Stn. Sainte-Foy, Québec, QC G1V 4C7, Canada },
    AUTHOR_KEYWORDS = { common garden experiment; dendroecology; genetics; local adaptation; provenance trial; tree rings; white spruce },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/nph.16551 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084417274&doi=10.1111%2fnph.16551&partnerID=40&md5=747b6737a58d7182483b9aa302076ac0 },
}

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