An undiscovered facet of hydraulic redistribution driven by evaporation-A study from a Populus tomentosa plantation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F21%3A43919376" target="_blank" >RIV/62156489:43410/21:43919376 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1093/plphys/kiab036" target="_blank" >https://doi.org/10.1093/plphys/kiab036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/plphys/kiab036" target="_blank" >10.1093/plphys/kiab036</a>
Alternative languages
Result language
angličtina
Original language name
An undiscovered facet of hydraulic redistribution driven by evaporation-A study from a Populus tomentosa plantation
Original language description
Maintenaining the activity and function of the shallow root system of plants is essential for withstanding drought stress, but the associated mechanism is poorly understood. By investigating sap flow in 14 lateral roots (LRs) randomly selected from trees of a Chinese white poplar (Populus tomentosa) plantation receiving three levels of irrigation, an unknown root-water transport mode of simultaneous daytime bi-directional water flow was discovered. This mode existed in five LRs confined to the surface soil without attached sinker roots. In the longer term, the bi-directional water flow was correlated with the soil water content. However, within the day, it was associated with transpiration. Our data demonstrated that bi-directional root sap flow occurred during the day, and was driven by evaporative demand, further suggesting the existence of circumferential water movement in the LR xylem. We named this phenomenon evaporation-driven hydraulic redistribution (EDHR). A soil-root water transport model was proposed to encapsulate this water movement mode. EDHR may be a crucial drought-tolerance mechanism that allows plants to maintain shallow root survival and activity by promoting root water recharge under extremely dry conditions.
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
10611 - Plant sciences, botany
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant Physiology
ISSN
0032-0889
e-ISSN
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Volume of the periodical
186
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
361-372
UT code for WoS article
000696366700034
EID of the result in the Scopus database
2-s2.0-85104452811