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Plasticity in variation of xylem and phloem cell characteristics of Norway spruce under different local conditions

Jožica Gričar and Peter Prislan and Martin De Luis and Vladimir Gryc and Jana Hacurová and Hanuš Vavrčík and Katarina Čufar (2015) Plasticity in variation of xylem and phloem cell characteristics of Norway spruce under different local conditions. Frontiers in plant science, 6 . pp. 1-14. ISSN 1664-462X

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    There is limited information on intra-annual plasticity of secondary tissues of tree species growing under different environmental conditions. To increase the knowledge about the plasticity of secondary growth, which allows trees to adapt to specific local climatic regimes, we examined climate–radial growth relationships of Norway spruce [Picea abies (L.) H. Karst.] from three contrasting locations in the temperate climatic zone by analyzing tree-ring widths for the period 1932–2010, and cell characteristics in xylem and phloem increments formed in the years 2009–2011. Variation in the structure of xylem and phloem increments clearly shows that plasticity in seasonal dynamics of cambial cell production and cell differentiation exists on xylem and phloem sides. Anatomical characteristics of xylem and phloem cells are predominantly site-specific characteristics, because they varied among sites but were fairly uniform among years in trees from the same site. Xylem and phloem tissues formed in the first part of the growing season seemed to be more stable in structure, indicating their priority over latewood and late phloem for tree performance. Long-term climate and radial growth analyses revealed that growth was in general less dependent on precipitation than on temperature; however, growth sensitivity to local conditions differed among the sites. Only partial dependence of radial growth of spruce on climatic factors on the selected sites confirms its strategy to adapt the structure of wood and phloem increments to function optimally in local conditions.

    Item Type: Article
    Keywords: cambium growth/climaterelation Picea abies tracheid tracheidogram cell differentiation sieve cell phloemogram
    Link to COBISS: http://www.cobiss.si/scripts/cobiss?command=SEARCH&base=COBIB&select=ID=4162726
    Divisions: Biotechnical Faculty, Department of Wood Technology > Chair of wood science
    Item ID: 1971
    Date Deposited: 17 Jun 2016 11:53
    Last Modified: 17 Jun 2016 11:53
    URI: http://eprints.gozdis.si/id/eprint/1971

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