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dc.contributor.author
Fuertes, M. E.
dc.contributor.author
Lobartini, Juan Carlos
dc.contributor.author
Orioli, Gustavo Adolfo
dc.date.available
2017-06-26T16:32:04Z
dc.date.issued
2010-01
dc.identifier.citation
Fuertes, M. E.; Lobartini, Juan Carlos; Orioli, Gustavo Adolfo; Boron nutrition, intracellular transport, and knife-cut disease in sunflower; Taylor & Francis; Communications in Soil Science and Plant Analysis; 41; 6; 1-2010; 665-678
dc.identifier.issn
0010-3624
dc.identifier.uri
http://hdl.handle.net/11336/18873
dc.description.abstract
The present study was conducted to investigate in sunflower the processes of boron (B) uptake, intracellular compartmentation, and xylem translocation in response to B supply, ranging from deficiency to incipient toxicity, and to short-term changes in B supply. The experiments were conducted with two sunflower genotypes, selected on the basis of their susceptibility to knife-cut disease. It appears that the roots of the susceptible genotype of sunflower were more sensitive to low B contents in the solution media than the shoots. The decrease in root dry weight in high-B treatments could also indicate it was more sensitive to B toxicity. Though root dry weight decreased, the shoot/root dry-weight ratio was smaller in the resistant genotype, suggesting that this genotype would have a substantially larger root volume, capable of supporting the B demand of its shoots. The B contents in the water-insoluble residue (WIR) of roots were similar for all genotypes and treatments. In contrast, the B concentration in WIR of leaves reached values near saturation only when B started to accumulate in the cell sap (CS) of roots to the level as detected in CS of leaves. The critical values of B concentrations in shoot tissues would then be established after the B requirement for cell walls was satisfied and a proper metabolic B content in CS of roots was reached. Uptake efficiency (UE) values less than 1.00, detected as a result of treatments with high concentrations of B in the nutrient solution, suggested the presence of an exclusion mechanism that restricted B accumulation. The high UE value obtained with low-B treatments indicated that mechanisms other than mass flow had played a role in providing the acquired B.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Boron Deficiency
dc.subject
Boron Uptake
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Micronutrients
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Plant Nutrition
dc.subject.classification
Ciencias del Suelo
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Boron nutrition, intracellular transport, and knife-cut disease in sunflower
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-10T14:20:38Z
dc.journal.volume
41
dc.journal.number
6
dc.journal.pagination
665-678
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Fuertes, M. E.. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.description.fil
Fil: Lobartini, Juan Carlos. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Orioli, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.journal.title
Communications in Soil Science and Plant Analysis
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/00103620903563915
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/00103620903563915
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