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Water-use efficiency declines during autumn leaf senescence in three deciduous tree species, North Carolina piedmont, USA.

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dc.creatorSanchez, Adriana
dc.creatorHughes, Nicole Mspa
dc.creatorSmith, William Kspa
dc.date.accessioned2020-08-19T14:41:21Z
dc.date.available2020-08-19T14:41:21Z
dc.date.created2013spa
dc.description.abstractDuring fall leaf senescence in deciduous species, photosynthesis nears completion due to chlorophyll breakdown and re-assimilation. However, several other processes such as leaf nutrient uptake, re-translocation, and storage, or tissue dehydration to avoid frost damage, may be important and dependent upon stomatal opening. We report here on measured changes in photosynthesis (A), leaf conductance to water vapor (g), and WUE (estimated by A/g) in three deciduous tree species (Acer saccharum, Cornus florida, and Ginkgo biloba) during the weeks of leaf senescence preceding abscission. Substantial decreases in A of 60 up to 80% were not matched quantitatively by similar declines in g (40 to 70%), resulting in corresponding decreases in WUE (estimated by A/g) from near 50% to over 300% among the three species. This shift to a lower WUE may reflect adaptive value in maintaining a higher g relative to A during the fall leaf senescence period.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.4081/pb.2013.e7
dc.identifier.issnISSN: 2037-0156
dc.identifier.issnEISSN: 2037-0164
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/27212
dc.language.isoengspa
dc.publisherPAGEPressspa
dc.relation.citationIssueNo. 1
dc.relation.citationTitleInternational Journal of Plant Biology
dc.relation.citationVolumeVol. 4
dc.relation.ispartofInternational Journal of Plant Biology, ISSN: 2037-0156; EISSN: 2037-0164, Vol.4, No.1 (2013)spa
dc.relation.urihttps://www.pagepress.org/journals/index.php/pb/article/view/pb.2013.e7/4084spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.sourceInternational Journal of Plant Biologyspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordFall leaf senescencespa
dc.subject.keywordLeaf conductancespa
dc.subject.keywordPhotosynthesisspa
dc.subject.keywordWater use efficiencyspa
dc.titleWater-use efficiency declines during autumn leaf senescence in three deciduous tree species, North Carolina piedmont, USA.spa
dc.title.TranslatedTitleLa eficiencia del uso del agua disminuye durante la senescencia de las hojas en otoño en tres especies de árboles de hoja caduca, piedemonte de Carolina del Norte, EE. UU.spa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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