Stem-mediated hydraulic redistribution in large roots on opposing sides of a Douglas-fir tree following localised irrigation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F09%3A00142293" target="_blank" >RIV/62156489:43410/09:00142293 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Stem-mediated hydraulic redistribution in large roots on opposing sides of a Douglas-fir tree following localised irrigation

Original language description

Increasing evidence about hydraulic redistribution (HR) and its ecological consequences is emerging. HR results from an interplay between competing plant and soil water potential gradients. In this work, stem-mediated HR was studied in a 53-year-old Douglas-fir tree during a period of drought. Sap flux density measurements using the heat field deformation method were performed at four locations: in two large opposing roots and on two sides of the tree stem. HR was induced by localised irrigation on oneof the measured roots creating heterogeneous soil water conditions. Stem-mediated HR was detected during night-time conditions when water was redistributed from the wet side of the tree to the non-irrigated dry side. Beside stem-mediated HR, bi-directional flow in the dry root was also observed indicating radial sectoring in the xylem. It was observed that through stem-mediated HR Douglas-fir was unable to increase its transpiration despite the fact that sufficient water was available to

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/QG60063" target="_blank" >QG60063: Douglas fir - the most important introduced species in multifunctional and sustainable forest management</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

New Phytologist

ISSN

0028-646X

e-ISSN

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Volume of the periodical

184

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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