Relationship between ultrasonic properties and structural changes in the mesophyll during leaf dehydration

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dc.bibliographicCitation.endpage3645es_ES
dc.bibliographicCitation.issue12es_ES
dc.bibliographicCitation.stpage3637es_ES
dc.bibliographicCitation.titleJournal Of Experimental Botanyen
dc.bibliographicCitation.volume62es_ES
dc.contributor.authorGil Pelegrín, Eustaquioes_ES
dc.contributor.authorSancho Knapik, Domingoes_ES
dc.contributor.authorGómez Álvarez Arenas, Tomás E.es_ES
dc.contributor.authorPeguero Pina, José Javieres_ES
dc.contributor.authorFernández, V.es_ES
dc.date.accessioned2024-02-08T11:12:41Z
dc.date.available2024-02-08T11:12:41Z
dc.date.issued2011es_ES
dc.date.updated2024-02-08T08:00:12Z
dc.description.abstractThe broad-band ultrasonic spectroscopy technique allows the determination of changes in the relative water content (RWC) of leaves with contrasting structural features. Specifically, the standardized frequency associated with the maximum transmittance (f/fo) is strongly related to the RWC. This relationship is characterized by the existence of two phases separated by an inflexion point (associated with the turgor loss point). To obtain a better understanding of the strong relationship found between RWC and f/fo, this work has studied the structural changes experienced by Quercus muehlenbergii leaves during dehydration in terms of ultrasounds measurements, cell wall elasticity, leaf thickness, leaf density, and leaf structure. The results suggest that the decrease found in f/fo before the turgor loss point can be attributed to the occurrence of changes in the estimation of the macroscopic effective elastic constant of the leaf (c33), mainly associated with changes in the bulk modulus of elasticity of the cell wall (?). These changes are overriding or compensating for the thickness decreases recorded during this phase. On the other hand, the high degree of cell shrinkage and stretching found in the mesophyll cells during the second phase seem to explain the changes in the acoustic properties of the leaf beyond the turgor loss point. The formation of large intercellular spaces, which increased the irregularity in the acoustic pathway, may explain the increase of the attenuation coefficient of ultrasounds once the turgor loss point threshold is exceeded. The direct measurement of c33 from ultrasonic measurements would allow a better knowledge of the overall biomechanical properties of the leaf further than those derived from the P-V analysis.en
dc.description.sponsorshipEste estudio ha sido parcialmente financiado por el proyecto SUM2008-00004-C03-03 del INIA (Ministerio de Ciencia e Innovación). También se agradece el apoyo financiero del Gobierno de Aragón (grupo de investigación A54).es_ES
dc.description.statusPublishedes_ES
dc.identifier.citationSancho-Knapik, D., Álvarez-Arenas, T. G., Peguero-Pina, J. J., Fernández, V., & Gil-Pelegrín, E. (2011). Relationship between ultrasonic properties and structural changes in the mesophyll during leaf dehydration. Journal of Experimental Botany, 62(10), 3637-3645. https://doi.org/10.1093/jxb/err065
dc.identifier.issn00220957
dc.identifier.urihttp://hdl.handle.net/10532/6866
dc.language.isoenes_ES
dc.relation.doihttps://doi.org/10.1093/jxb/err065es_ES
dc.relation.urihttps://doi.org/10.1093/jxb/err065es_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 Spaines_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.agrovocPared celularen
dc.subject.agrovocHojasen
dc.subject.agrovocContenido de aguaen
dc.subject.agrovocTurgenciaen
dc.subject.agrovocPotencial hídrico foliaren
dc.subject.otherAir
dc.subject.otherArticle
dc.subject.otherCell Wall
dc.subject.otherCell wall elasticity
dc.subject.otherCryoelectron Microscopy
dc.subject.otherDehydration
dc.subject.otherDrought
dc.subject.otherleaf thickness
dc.subject.otherMEMBRANE FILTERS
dc.subject.otherMetabolism
dc.subject.otherMicroscopy, Electron, Scanning
dc.subject.otherPlant Leaf
dc.subject.otherPlant Leaves
dc.subject.otherPlants
dc.subject.otherQuercus muehlenbergii
dc.subject.otherrelative water content
dc.subject.otherScanning Electron Microscopy
dc.subject.otherSpectroscopy
dc.subject.otherStomatal Closure
dc.subject.otherThickness
dc.subject.otherturgor loss point
dc.subject.otherTurgor pressure
dc.subject.otherUltrasonic spectroscopy
dc.subject.otherUltrasonics
dc.subject.otherUltrasound
dc.subject.otherWater
dc.subject.otherWater potential
dc.subject.otherWater status
dc.titleRelationship between ultrasonic properties and structural changes in the mesophyll during leaf dehydrationen
dc.typearticle*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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