Variation in photosynthetic performance and hydraulic architecture across European beech (Fagus sylvatica L.) populations supports the case for local adaptation to water stress

Aranda, Ismael and Cano Martín, Francisco Javier and Gascó, Antonio and Cochard, Hervé and Nardini, Andrea and Mancha, José Antonio and López Rodríguez, Rosa Ana and Sánchez-Gómez, David (2015). Variation in photosynthetic performance and hydraulic architecture across European beech (Fagus sylvatica L.) populations supports the case for local adaptation to water stress. "Tree Physiology", v. 35 (n. 1); pp. 34-46. ISSN 0829-318X. https://doi.org/10.1093/treephys/tpu101.

Description

Title: Variation in photosynthetic performance and hydraulic architecture across European beech (Fagus sylvatica L.) populations supports the case for local adaptation to water stress
Author/s:
  • Aranda, Ismael
  • Cano Martín, Francisco Javier
  • Gascó, Antonio
  • Cochard, Hervé
  • Nardini, Andrea
  • Mancha, José Antonio
  • López Rodríguez, Rosa Ana
  • Sánchez-Gómez, David
Item Type: Article
Título de Revista/Publicación: Tree Physiology
Date: January 2015
ISSN: 0829-318X
Volume: 35
Subjects:
Freetext Keywords: beech; cavitation; chlorophyll fluorescence; drought; gas exchange
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The aim of this study was to provide new insights into how intraspecific variability in the response of key functional traits to drought dictates the interplay between gas-exchange parameters and the hydraulic architecture of European beech (Fagus sylvatica L.). Considering the relationships between hydraulic and leaf functional traits, we tested whether local adaptation to water stress occurs in this species. To address these objectives, we conducted a glasshouse experiment in which 2-yearold saplings from six beech populations were subjected to different watering treatments. These populations encompassed central and marginal areas of the range, with variation in macro- and microclimatic water availability. The results highlight subtle but significant differences among populations in their functional response to drought. Interpopulation differences in hydraulic traits suggest that vulnerability to cavitation is higher in populations with higher sensitivity to drought. However, there was no clear relationship between variables related to hydraulic efficiency, such as xylem-specific hydraulic conductivity or stomatal conductance, and those that reflect resistance to xylem cavitation (i.e., ?12, the water potential corresponding to a 12% loss of stem hydraulic conductivity). The results suggest that while a trade-off between photosynthetic capacity at the leaf level and hydraulic function of xylem could be established across populations, it functions independently of the compromise between safety and efficiency of the hydraulic system with regard to water use at the interpopulation level

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainAGL2011-25365ECOFISEPIUnspecifiedAspectos ecofisiológicos y epigenéticos de la respuesta a estrés hídrico en especies forestales: Fagus sylvatica L. como modelo de estudio
Government of SpainAGL2006-03242UnspecifiedUnspecifiedUnspecified

More information

Item ID: 53769
DC Identifier: http://oa.upm.es/53769/
OAI Identifier: oai:oa.upm.es:53769
DOI: 10.1093/treephys/tpu101
Official URL: https://academic.oup.com/treephys/article/35/1/34/1674435
Deposited by: Memoria Investigacion
Deposited on: 04 Feb 2019 12:24
Last Modified: 10 Jun 2019 16:43
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