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Trees

, Volume 27, Issue 3, pp 485–496 | Cite as

Xylem plasticity allows rapid hydraulic adjustment to annual climatic variability

  • Marina Bryukhanova
  • Patrick Fonti
Original Paper

Abstract

Thanks to acclimation, trees overcome environmental changes and endure for centuries. The anatomy of water conducting cells is an important factor determining plant success. Forming cells are coupled with the environment and their properties are naturally archived in the wood. Its variability across tree rings can thus provide a retrospective of plant’s hydraulic adjustments. In this work, we measured lumen and wall thickness of tracheids along tree-rings to explore how trees regulate their conducting system under variable plant-water conditions. Tracheids were measured along 51 dated rings of five mature Larix decidua and Picea abies trees from a low elevation site. Anatomical-based chronologies of annual growth performance, hydraulic conductance and safety, and construction costs were built. Similarities among chronologies and the relation to monthly climate data were analyzed. Most parameters displayed high annual plasticity which was partly coherent among trees and mostly associated with radial growth. In general, summer drought reduced growth and potential hydraulic conductivity of the forming ring, and increased hydraulic safety and construction costs. To evaluate the functional relevance of the annual acclimation, the conductivity of the forming ring relative to the entire sapwood needs to be assessed.

Keywords

Tree-ring anatomy Tracheid-cell chronologies Plant-water relations Larix decidua Picea abies 

Notes

Acknowledgments

This study was supported by Swiss National Foundation through an International short visit (Grant number: #131408) and through the cooperation on the project INTEGRAL (#121859). We would like to thank David Frank and Georg von Arx for their assistance and critical discussion of an earlier version of the manuscript, and Kathlene English and Gregory King for the English review.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.V.N. Sukachev Institute of Forest SB RASKrasnoyarskRussia
  2. 2.Landscape DynamicsWSL Swiss Federal Research InstituteZurichSwitzerland

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