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dc.contributor.author
Graciano, Corina
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dc.contributor.author
Faustino, Laura Inés
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dc.contributor.author
Zwieniecki, Maciej
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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
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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
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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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
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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
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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
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