Ítem
Solo Metadatos

Effect of temporally heterogeneous light on photosynthetic light use efficiency, plant acclimation and growth in Abatia parviflora

Mostrar el registro sencillo de la publicación
dc.creatorRey-Sanchez, Camilospa
dc.creatorPosada Hostettler, Juan Manuel Robertospa
dc.date.accessioned2020-05-26T00:08:41Z
dc.date.available2020-05-26T00:08:41Z
dc.date.created2019spa
dc.description.abstractIndividual leaves have a unique instantaneous photosynthetic photon flux density (PPFD) at which net photosynthetic light use efficiency (?L, the ratio between net photosynthesis and PPFD) is maximised (PPFD?max). When PPFD is above or below PPFD?max, efficiency declines. Thus, we hypothesised that heterogeneous PPFD conditions should increase the amount of time leaves photosynthesise at a PPFD different than PPFD?max and result in reduced growth. To date, this prediction has not been rigorously tested. Here, we exposed seedlings of Abatia parviflora Ruiz and amp; Pav to light regimes of equal total daily irradiance but with three different daily time courses of PPFD: constant PPFD (NoH), low heterogeneity (Low-H) and high heterogeneity (High-H). Mean ?L, leaf daily photosynthesis and plant growth were all significantly higher in No-H and Low-H plants than in High-H plants, supporting our hypothesis. In addition, mean ?L was positively related to final plant biomass. Unexpectedly, High-H plants had more etiolated stems and more horizontal leaves than No-H and Low-H plants, possibly due to exposure to low PPFD in the morning and afternoon. In conclusion, PPFD heterogeneity had an important effect on average ?L, photosynthesis and growth, but also on allocation and plant morphology. © 2019 CSIRO.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1071/FP18279
dc.identifier.issn14454408
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/24105
dc.language.isoengspa
dc.publisherCSIROspa
dc.relation.citationEndPage693
dc.relation.citationIssueNo. 7
dc.relation.citationStartPage684
dc.relation.citationTitleFunctional Plant Biology
dc.relation.citationVolumeVol. 46
dc.relation.ispartofFunctional Plant Biology, ISSN:14454408, Vol.46, No.7 (2019); pp. 684-693spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85065406015&doi=10.1071%2fFP18279&partnerID=40&md5=fab470560324043fae5b10d1db0033c1spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordAcclimationspa
dc.subject.keywordAngiospermspa
dc.subject.keywordBiomassspa
dc.subject.keywordCarbonspa
dc.subject.keywordGrowthspa
dc.subject.keywordHeterogeneityspa
dc.subject.keywordIrradiancespa
dc.subject.keywordLight effectspa
dc.subject.keywordLight use efficiencyspa
dc.subject.keywordOptimizationspa
dc.subject.keywordPhoton flux densityspa
dc.subject.keywordPhotosynthesisspa
dc.subject.keywordResource usespa
dc.subject.keywordShade tolerancespa
dc.subject.keywordAbatia parvifloraspa
dc.subject.keywordBiomassspa
dc.subject.keywordCarbon gainspa
dc.subject.keywordOptimisationspa
dc.subject.keywordPlant organisationspa
dc.subject.keywordResource usespa
dc.subject.keywordShade responsespa
dc.titleEffect of temporally heterogeneous light on photosynthetic light use efficiency, plant acclimation and growth in Abatia parvifloraspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
Archivos
Colecciones
Artículos