Detailed Information on Publication Record
2007
Dynamic changes in root hydraulic properties in response to nitrate availability
GLOSER, Vít, Maciej ZWIENIECKI, Colin ORIANS and Michelle HOLBROOKBasic information
Original name
Dynamic changes in root hydraulic properties in response to nitrate availability
Name in Czech
Dynamické změny hydraulických vlastností kořenů v reakci na dostupnost nitrátových iontů
Authors
GLOSER, Vít (203 Czech Republic, guarantor), Maciej ZWIENIECKI (840 United States of America), Colin ORIANS (840 United States of America) and Michelle HOLBROOK (840 United States of America)
Edition
Journal of Experimental Botany, 2007, 0022-0957
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 3.917
RIV identification code
RIV/00216224:14310/07:00022982
Organization unit
Faculty of Science
UT WoS
000250644400002
Keywords in English
hydraulic resistance;nitrate;Helianthus anuus
Tags
International impact, Reviewed
Změněno: 3/6/2008 09:35, doc. RNDr. Vít Gloser, Ph.D.
V originále
We explored in detail changes in root hydraulic resistance in response to alterations in nitrate supply as a potential mechanism that allows plants to respond rapidly to changes in their environment. Sunflower (Helianthus anuus cv. Holiday) plants grown in hydroponics with limited nitrate availability served as our model. The response was rapid, with a decrease of about 20% occurring within the first hour after addition of 5mM nitrate. We also showed that the magnitude of this effect was dependent on nitrate concentration. The change in root hydraulic resistance was largely reversible, although the temporal dynamics of the response to nitrate addition versus nitrate withdrawal differed, raising the possibility that the underlying mechanisms may also differ. We present evidence that the observed changes in root hydraulic properties, presumably due to changes in the activity of aquaporins, are linked with a reduction in nitrate concentration in root cells. We propose that a rapid decrease in root hydraulic resistance in the presence of increased nitrate availability is an important trait that could enhance a plants ability to compete for nitrate in the soil.
In Czech
Změna hydraulických vlastností kořenů rostlin slunečnice po změně koncentrace nitrátů v okolí kořenů byla rychlá a pravděpodobně souvisí s asimilací nitrátů v buňkách.
Links
| 1P05ME793, research and development project |
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