Master of one trade:Arbutus unedo relies on plasticity to persist under habitats differing in water availability

作     者：Xabier Santiso Rubén Retuerto 

作者机构：Área de EcologíaFacultad de BiologíaCampus VidaUniversidade de Santiago de Compostela15782 Santiago de CompostelaSpain 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2017年第10卷第5期

页      面：869-881页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This research was co-financed by the research grant CGL2009-11356(Ministerio de Ciencia e Innovación)and the European Regional Development’s Fund(ERDF).X.S.was supported by the FPU fellowship AP-2009-0962(Ministerio de Educación) 

主　　题：adaptation canalization contrasted provenances drought global change phenotypic plasticity 

摘      要：Aims the limited water supply in the Mediterranean Basin will be exacerbated in the immediate future as result of severe drought ***,the study of the intraspecific variability in functional traits of plant species is important,because such variability modulates species’***,we aimed to analyse the variability in plasticity of physiological and structural traits of Arbutus unedo *** response to water availability and to determine whether the levels of phenotypic plasticity varied in plants of different *** We kept two sets of plants under contrasted water regimes(high water and low water)and calculated a phenotypic plasticity index to determine the plastic response to water *** compared the response among kind of traits and *** also per-formed analysis of variance to assess the trait and provenance *** Findings We found that biomass and key physiological traits decrease under drought conditions,while the water use efficiency *** differed between groups of traits,being higher in structural and gas exchange parameters,but the provenance did not account for signifi-cant variation in *** has evolved a‘good saver’strat-egy,involving decreasing growth and water use-when this resource is unavailable-together with the dissipation of excess of radiation that it cannot *** homogeneous response between provenances may be the result of a canalization *** strategy,based on a high degree of plasticity,is a probable determining factor in the success of the species over its wide range of environmental conditions and will be critical to withstand the ongoing environmental changes.