Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)

15 páginas.-- 13 figuras.-- 1 tabla.-- 64 referencias

Detalles Bibliográficos
Autores: Buckley, Thomas N., Martorell, Sebastià, Díaz-Espejo, Antonio, Tomàs, Magdalena, Medrano Gil, Hipólito
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/97417
Acceso en línea:http://hdl.handle.net/10261/97417
Access Level:acceso abierto
Palabra clave:Boundary layer
Carbon water balance
OptimizationStomata
Water-use efficiency
Stomata
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spelling Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)Buckley, Thomas N.Martorell, SebastiàDíaz-Espejo, AntonioTomàs, MagdalenaMedrano Gil, HipólitoBoundary layerCarbon water balanceOptimizationStomataWater-use efficiencyStomataWater-use efficiency15 páginas.-- 13 figuras.-- 1 tabla.-- 64 referenciasCrown carbon gain is maximized for a given total water loss if stomatal conductance (gs) varies such that the marginal carbon product of water (∂A/∂E) remains invariant both over time and among leaves in a plant crown, provided the curvature of assimilation rate (A) versus transpiration rate (E) is negative. We tested this prediction across distinct crown positions in situ for the first time by parameterizing a biophysical model across 14 positions in four grapevine crowns (Vitis vinifera), computing optimal patterns of gs and E over a day and comparing these to the observed patterns. Observed water use was higher than optimal for leaves in the crown interior, but lower than optimal in most other positions. Crown carbon gain was 18% lower under measured gs than under optimal gs. Positive curvature occurred in 39.6% of cases due to low boundary layer conductance (gbw), and optimal gs was zero in 11% of cases because ∂A/∂E was below the target value at all gs. Some conclusions changed if we assumed infinite gbw, but optimal and measured E still diverged systematically in time and space. We conclude that the theory's spatial dimension and assumption of positive curvature require further experimental testingThis work was funded by the Spanish Ministry of Science and Innovation (research projects AGL2008-04525-C02-01, AGL2011-30408-C04-01 and AGL2009-11310/AGR). T.N.B. was supported by the US National Science Foundation (Award No. 1146514) and by the Grains Research and Development Corporation (GRDC). S.M. benefitted from a FPI grant BES-2009-016906 from the Spanish Ministry of Science and Innovation.Peer reviewedJohn Wiley & Sons201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/97417reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/pce.12343info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/974172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
title Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
spellingShingle Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
Buckley, Thomas N.
Boundary layer
Carbon water balance
OptimizationStomata
Water-use efficiency
Stomata
Water-use efficiency
title_short Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
title_full Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
title_fullStr Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
title_full_unstemmed Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
title_sort Is stomatal conductance optimized over both time and space in plant crowns? A field test in grapevine (Vitis vinifera)
dc.creator.none.fl_str_mv Buckley, Thomas N.
Martorell, Sebastià
Díaz-Espejo, Antonio
Tomàs, Magdalena
Medrano Gil, Hipólito
author Buckley, Thomas N.
author_facet Buckley, Thomas N.
Martorell, Sebastià
Díaz-Espejo, Antonio
Tomàs, Magdalena
Medrano Gil, Hipólito
author_role author
author2 Martorell, Sebastià
Díaz-Espejo, Antonio
Tomàs, Magdalena
Medrano Gil, Hipólito
author2_role author
author
author
author
dc.subject.none.fl_str_mv Boundary layer
Carbon water balance
OptimizationStomata
Water-use efficiency
Stomata
Water-use efficiency
topic Boundary layer
Carbon water balance
OptimizationStomata
Water-use efficiency
Stomata
Water-use efficiency
description 15 páginas.-- 13 figuras.-- 1 tabla.-- 64 referencias
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/97417
url http://hdl.handle.net/10261/97417
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/pce.12343
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869420767459934208
score 15,812429

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