A latitudinal cline and response to vernalization in leaf angle and morphology in Arabidopsis thaliana (Brassicaceae).

The New Phytologist
Robin HopkinsJohn R Stinchcombe

Abstract

Adaptation to latitudinal patterns of environmental variation is predicted to result in clinal variation in leaf traits. Therefore, this study tested for geographic differentiation and plastic responses to vernalization in leaf angle and leaf morphology in Arabidopsis thaliana. Twenty-one European ecotypes were grown in a common growth chamber environment. Replicates of each ecotype were exposed to one of four treatments: 0, 10, 20 or 30 d of vernalization. Ecotypes from lower latitudes had more erect leaves, as predicted from functional arguments about selection to maximize photosynthesis. Lower-latitude ecotypes also had more elongated petioles as predicted by a biomechanical constraint hypothesis. In addition, extended vernalization resulted in shorter and more erect leaves. As predicted by functional and adaptive hypotheses, our results show genetically based clinal variation as well as environmentally induced variation in leaf traits.

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Citations

Sep 11, 2009·Plant Physiology·Martijn van ZantenFrank F Millenaar
Oct 1, 2010·The New Phytologist·Alicia Montesinos-NavarroStephen J Tonsor
Oct 18, 2011·Molecular Ecology·Cheng-Ruei Lee, Thomas Mitchell-Olds
Oct 15, 2013·The New Phytologist·Marnin D Wolfe, Stephen J Tonsor
Oct 3, 2009·The Plant Journal : for Cell and Molecular Biology·Martijn van ZantenFrank F Millenaar
Jan 15, 2015·Molecular Phylogenetics and Evolution·Lacie J SchulteJames F Smith
Apr 20, 2021·Evolution Letters·Daniel N AnstettAmy L Angert
Apr 19, 2021·Plant, Cell & Environment·Jing XuGuang-Heng Zhang

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