Claim · model-written summary
Adding 5 mM nitrate decreased root hydraulic resistance by 20% within the first hour.
- Taxon
- Helianthus annuus
Helianthus annuuse0 - Treatment
- addition of 5 mM nitratee1
- Outcome
- hydraulic resistancee1
- Direction
- decreasee1
- Value
- 20%e1
- Qualifier
- within the first houre1
Not reportedComparator
Verbatim
e0“Sunflower (Helianthus annuus cv. Holiday) plants grown hydroponically with limited nitrate availability”
e1“The response was rapid, with a 20% decrease in hydraulic resistance occurring within the first hour after the addition of 5 mM nitrate and the magnitude of the effect was dependent on nitrate concentration”
Title
Dynamic changes in root hydraulic properties in response to nitrate availability
V. Gloser; M. A. Zwieniecki; C. M. Orians; et al. Journal of Experimental Botany 2007. doi:10.1093/jxb/erm118
Other claims from this paper (6)
- Association The magnitude of the nitrate effect on root hydraulic resistance depended on nitrate concentration.
- Observation The change in root hydraulic resistance was largely reversible.
- Association The temporal dynamics of the response to nitrate addition and to nitrate withdrawal were not symmetric.
- Mechanism Changes in root hydraulic properties require assimilation of nitrate by root cells.
- Intervention effect Under anoxia, root hydraulic resistance of nitrate-stimulated plants increased more than in control plants in low nitrate.
- Mechanism Aquaporin activity is suggested to play a key role in the root hydraulic response to nitrate.