How timing of stem girdling affects needle xylem structure in Scots pine
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43914165" target="_blank" >RIV/62156489:43410/18:43914165 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s10342-017-1090-z" target="_blank" >https://doi.org/10.1007/s10342-017-1090-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10342-017-1090-z" target="_blank" >10.1007/s10342-017-1090-z</a>
Alternative languages
Result language
angličtina
Original language name
How timing of stem girdling affects needle xylem structure in Scots pine
Original language description
While needles represent a proportionally large fraction of whole-plant hydraulic resistance, no studies to date have investigated how source-sink disturbances affect needle xylem structure. In this study, we evaluated structural changes in xylem in current-year needles of Scots pine 227 and 411 days after stem girdling (hereafter referred to as DAG). Maximum and minimum tracheid lumen diameters and therefore also the size of tracheid lumen areas increased in needles 227 DAG compared to control needles. In contrast, tracheid dimensions were similar in needles 411 DAG as in the control needles, but smaller xylem area and lower number of tracheids resulted in the lower theoretical needle hydraulic conductivity of those needles. Several needle xylem parameters were intercorrelated in both control and girdled trees. These observed changes provide a new understanding of the processes that occur following a source-sink disturbance. Considering anatomical parameters such as the number of tracheids, tracheid dimension, or needle xylem area, which are rarely described in physiological studies, could be helpful, for example, in understanding to tree hydraulic systems or for modeling gas exchange. Finally, empirical equations were developed to calculate needle theoretical hydraulic conductivity and the number of tracheids in needles using an easily measurable parameter of needle xylem area.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Forest Research
ISSN
1612-4669
e-ISSN
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Volume of the periodical
137
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
57-67
UT code for WoS article
000433225400005
EID of the result in the Scopus database
2-s2.0-85035792173