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dc.contributor.author
Graciano, Corina  
dc.contributor.author
Faustino, Laura Inés  
dc.contributor.author
Zwieniecki, Maciej  
dc.date.available
2019-09-24T22:09:15Z  
dc.date.issued
2016-04  
dc.identifier.citation
Graciano, Corina; Faustino, Laura Inés; Zwieniecki, Maciej; Hydraulic properties of Eucalyptus grandis in response to nitrate and phosphate deficiency and sudden changes in their availability; Wiley VCH Verlag; Journal of Plant Nutrition and Soil Science - Zeitschrift fur Pflanzenernahrung und Bodenkunde; 179; 2; 4-2016; 303-309  
dc.identifier.issn
1436-8730  
dc.identifier.uri
http://hdl.handle.net/11336/84372  
dc.description.abstract
Some herbaceous plant species have been shown to dynamically alter the hydraulic properties of their roots in response to sudden changes in the concentrations of mobile nutrients. These hydraulic adaptations effectively allow plants to ‘chase’ mobile nutrients across the rhizosphere. Trees, on the other hand, could mitigate effects of heterogeneous, dynamic soil environments with extensive root systems as such systems would effectively equalize nutrient availability. In addition, large dendritic root systems would reduce the effectiveness of rapid, localized, physiological hydraulic changes as these local changes might cancel each other at lower-order root junctions. Thus, the aim of this study was to determine if trees (Eucalyptus grandis) employ short-term (minutes to hours), physiological hydraulic changes or rely on long-term (days), growth-based hydraulic acclimations to enhance mobile nutrient uptake. We used two nutrients, nitrogen (N) and phosphorus (P), that are characterized by contrasting soil mobility: N being mobile and P immobile. Transpiration, whole-plant hydraulic resistance (liquid phase), and the hydraulic resistance of single roots of E. grandis plants grown in high and low N combined with high and low P availability were measured. In general, plants grown with high N availability had lower whole-plant hydraulic resistance than plants grown with low N availability. When N or P were in short supply, a sudden addition of N or P did not change either single-root or whole-plant hydraulic resistance at a given leaf water potential. However, addition of N reduced the transpiration rate, thus, enhancing plant water status, suggesting that E. grandis behavior prioritizes water conservation over N uptake in short-term. Prolonged exposure to low nutrient availability resulted in high overall hydraulic resistance further suggesting prioritization of water conservation over N gain.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley VCH Verlag  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Conductance  
dc.subject
Conductivity  
dc.subject
Nitrogen  
dc.subject
Phosphorus  
dc.subject
Transpiration  
dc.subject.classification
Silvicultura  
dc.subject.classification
Agricultura, Silvicultura y Pesca  
dc.subject.classification
CIENCIAS AGRÍCOLAS  
dc.title
Hydraulic properties of Eucalyptus grandis in response to nitrate and phosphate deficiency and sudden changes in their availability  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-09-23T13:33:11Z  
dc.journal.volume
179  
dc.journal.number
2  
dc.journal.pagination
303-309  
dc.journal.pais
Alemania  
dc.journal.ciudad
Weinheim  
dc.description.fil
Fil: Graciano, Corina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina  
dc.description.fil
Fil: Faustino, Laura Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina  
dc.description.fil
Fil: Zwieniecki, Maciej. University of California at Davis; Estados Unidos  
dc.journal.title
Journal of Plant Nutrition and Soil Science - Zeitschrift fur Pflanzenernahrung und Bodenkunde  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jpln.201500207  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/jpln.201500207