Climate as a driver of adaptive variations in ecological strategies in Arabidopsis thaliana

Annals of Botany 2018François Vasseur, Kevin Sartori, Etienne Baron, Florian Fort, Elena Kazakou, Jules Segrestin, Eric Garnier, Denis Vile, Cyrille Violle Substantial variation in ecological strategies along the S–R axis was found in A. thaliana. By contrast with previous findings, stress-tolerator accessions predominated in cold climates, notably Scandinavia, where late flowering was associated with traits… Continue reading Climate as a driver of adaptive variations in ecological strategies in Arabidopsis thaliana

Image-based methods for phenotyping growth dynamics and fitness components in Arabidopsis thaliana

Plant methods 2018François Vasseur, Justine Bresson, George Wang, Rebecca Schwab, Detlef Weigel We developed two models to predict plant dry mass and fruit number from the parameters extracted with the analysis of rosette and inflorescence images. Predictive models were trained by sacrificing growing individuals for dry mass estimation, and manually measuring a fraction of individuals… Continue reading Image-based methods for phenotyping growth dynamics and fitness components in Arabidopsis thaliana

Adaptive diversification of growth allometry in the plant Arabidopsis thaliana

Proceedings of the National Academy of Sciences 2018François Vasseur, Moises Exposito-Alonso, Oscar J Ayala-Garay, George Wang, Brian J Enquist, Denis Vile, Cyrille Violle, Detlef Weigel Are there biological constants unifying phenotypic diversity across scales? Metabolic scaling theory (MST) predicts mathematical regularity and constancy in the allometric scaling of growth rate with body size across species.… Continue reading Adaptive diversification of growth allometry in the plant Arabidopsis thaliana

A rainfall-manipulation experiment with 517 Arabidopsis thaliana accessions

bioRxiv 2018 Moises Exposito-Alonso, Rocío Gómez Rodríguez, Cristina Barragán, Giovanna Capovilla, Eunyoung Chae, Jane Devos, Ezgi S Dogan, Claudia Friedemann, Caspar Gross, Patricia Lang, Derek Lundberg, Vera Middendorf, Jorge Kageyama, Talia Karasov, Sonja Kersten, Sebastian Petersen, Leily Rabbani, Julian Regalado, Lukas Reinelt, Beth Rowan, Danelle K Seymour, Efthymia Symeonidi, Rebecca Schwab, Diep Thi Ngoc Tran,… Continue reading A rainfall-manipulation experiment with 517 Arabidopsis thaliana accessions

Genomic basis and evolutionary potential for extreme drought adaptation in Arabidopsis thaliana

Nature ecology & evolution 2018Moises Exposito-Alonso, Francois Vasseur, Wei Ding, George Wang, Hernán A Burbano, Detlef Weigel As Earth is currently experiencing dramatic climate change, it is of critical interest to understand how species will respond to it. The chance of a species withstanding climate change is likely to depend on the diversity within the species… Continue reading Genomic basis and evolutionary potential for extreme drought adaptation in Arabidopsis thaliana

Genetic architecture of nonadditive inheritance in Arabidopsis thaliana hybrids

Proceedings of the National Academy of Sciences 2016Danelle K Seymour, Eunyoung Chae, Dominik G Grimm, Carmen Martín Pizarro, Anette Habring-Müller, François Vasseur, Barbara Rakitsch, Karsten M Borgwardt, Daniel Koenig, Detlef Weigel The ubiquity of nonparental hybrid phenotypes, such as hybrid vigor and hybrid inferiority, has interested biologists for over a century and is of considerable… Continue reading Genetic architecture of nonadditive inheritance in Arabidopsis thaliana hybrids

PHENOPSIS Quelles évolutions technologiques du premier automate de phénotypage des plantes?

Cahier des Techniques de l'INRA 2016Myriam Dauzat, Anaëlle Dambreville, Justine Bresson, Denis Vile, Bertrand Muller, Vincent Negre, Garance Koch, François Vasseur, Alexis Bediee, Maxence Desigaux, Denis Fourreau, Christine Granier Afin de répondre aux besoins de phénotypage à haut débit dans le domaine végétal, le LEPSE (Laboratoire d’Ecophysiologie des plantes sous stress environnementaux) et la société… Continue reading PHENOPSIS Quelles évolutions technologiques du premier automate de phénotypage des plantes?

Quantifying spatial heterogeneity of chlorophyll fluorescence during plant growth and in response to water stress

Plant Methods 2015Justine Bresson, François Vasseur, Myriam Dauzat, Garance Koch, Christine Granier, Denis Vile We developed a method to quantify the dynamics of spatial heterogeneity of photosynthetic efficiency through the distribution-based analysis of Fv/Fm values. The method was applied to Arabidopsis thaliana grown under well-watered and severe water deficit (survival rate of 40%). First, whole-plant… Continue reading Quantifying spatial heterogeneity of chlorophyll fluorescence during plant growth and in response to water stress

Testing models for the leaf economics spectrum with leaf and whole-plant traits in Arabidopsis thaliana

AoB Plants 2015Benjamin Blonder, François Vasseur, Cyrille Violle, Bill Shipley, Brian J Enquist, Denis Vile The leaf economics spectrum (LES) describes strong relationships between multiple functional leaf traits that determine resource fluxes in vascular plants. Five models have been proposed to explain these patterns: two based on patterns of structural allocation, two on venation networks… Continue reading Testing models for the leaf economics spectrum with leaf and whole-plant traits in Arabidopsis thaliana

Multivariate genetic analysis of plant responses to water deficit and high temperature revealed contrasting adaptive strategies

Journal of experimental botany 2014 François Vasseur, Thibaut Bontpart, Myriam Dauzat, Christine Granier, Denis Vile How genetic factors control plant performance under stressful environmental conditions is a central question in ecology and for crop breeding. A multivariate framework was developed to examine the genetic architecture of performance-related traits in response to interacting environmental stresses. Ecophysiological… Continue reading Multivariate genetic analysis of plant responses to water deficit and high temperature revealed contrasting adaptive strategies