An evolutionary perspective on leaf economics: phylogenetics of leaf mass per area in vascular plants

Ecology and Evolution

Olivier Flores¹⁴  Eric Garnier¹⁴  Ian J. Wright¹³  Peter B. Reich¹²  Simon Pierce³  Sandra Dìaz¹⁶  Robin J. Pakeman²⁰  Graciela M. Rusch⁹  Maud Bernard-Verdier¹⁴  Baptiste Testi¹⁴  Jan P. Bakker¹¹  Renée M. Bekker¹¹  Bruno E. L. Cerabolini⁸  Roberta M. Ceriani^14,19  Guillaume Cornu^14,18  Pablo Cruz^4,14  Matthieu Delcamp^14,18  Jiri Dolezal^6,14  Ove Eriksson^2,14  Adeline Fayolle^14,18  Helena Freitas^5,14  Carly Golodets^14,17  Sylvie Gourlet-Fleury^14,18  John G. Hodgson^1,14  Guido Brusa⁸  Michael Kleyer^14,15  Dieter Kunzmann^14,15  Sandra Lavorel^10,14  Vasilios P. Papanastasis^7,13  Natalia Pérez-Harguindeguy¹⁶  Fernanda Vendramini¹⁶ 

[1] Department of Archaeology, The University, Sheffield, UK;Department of Botany, Stockholm University, Stockholm, Sweden;Department of Plant Production, University of Milan, Milan, Italy;INRA UMR 1248 AGIR, Equipe ORPHEE, Castanet-Tolosan, France;Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal;Institute of Botany, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic;Laboratory of Rangeland Ecology, Aristotle University of Thessaloniki, Thessaloniki, Greece;DBSF, Università degli Studi dell'Insubria, Varese, Italy;Norwegian Institute for Nature Research, Trondheim, Norway;Laboratoire d'Écologie Alpine (CNRS UMR 5553) and Station Alpine Joseph Fourier (UMS-UJF-CNRS 2925), Université Joseph Fourier, Grenoble, Cedex 09, France;Community and Conservation Ecology Group, AA Haren, The Netherlands;Department of Forest Resources and Institute on the Environment, University of Minnesota, St Paul, Minnesota;Department of Biological Sciences, Macquarie University, New South Wales, Australia;CNRS, Centre d'Écologie Fonctionnelle et Évolutive (CEFE), UMR 5175, Montpellier Cedex 5, France;Landscape Ecology Group, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany;Instituto Multidisciplinario de Biología Vegetal (CONICET - UNC) and FCEFyN, Universidad Nacional de Córdoba, Córdoba, Argentina;Department of Molecular Biology and Ecology of Plants, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel;UR B&SEF CIRAD, TA C-105/D, Campus International de Baillarguet, Montpellier Cedex 5, France;Centro Flora Autoctona, c/o Consorzio Parco Monte Barro, Galbiate (LC), Italy;James Hutton Institute, Craigiebuckler, Aberdeen, UK

关键词: Brownian model;    functional trait;    Ornstein–Uhlenbeck model;    phenotypic evolution;   

DOI  :  10.1002/ece3.1087

来源: Wiley

【 摘 要 】

Abstract

In plant leaves, resource use follows a trade-off between rapid resource capture and conservative storage. This “worldwide leaf economics spectrum” consists of a suite of intercorrelated leaf traits, among which leaf mass per area, LMA, is one of the most fundamental as it indicates the cost of leaf construction and light-interception borne by plants. We conducted a broad-scale analysis of the evolutionary history of LMA across a large dataset of 5401 vascular plant species. The phylogenetic signal in LMA displayed low but significant conservatism, that is, leaf economics tended to be more similar among close relatives than expected by chance alone. Models of trait evolution indicated that LMA evolved under weak stabilizing selection. Moreover, results suggest that different optimal phenotypes evolved among large clades within which extremes tended to be selected against. Conservatism in LMA was strongly related to growth form, as were selection intensity and phenotypic evolutionary rates: woody plants showed higher conservatism in relation to stronger stabilizing selection and lower evolutionary rates compared to herbaceous taxa. The evolutionary history of LMA thus paints different evolutionary trajectories of vascular plant species across clades, revealing the coordination of leaf trait evolution with growth forms in response to varying selection regimes.

【 授权许可】

CC BY   
© 2014 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.