Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation

Nocturnal stomatal conductance (gsn) represents a significant source of water loss, with implications for metabolism, thermal regulation and water-use efficiency. With increasing nocturnal temperatures due to climate change, it is vital to identify and understand variation in the magnitude and respo...

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Detalles Bibliográficos
Autores: McAusland, L., Smith, K.E., Williams, A., Molero, G., Murchie, E.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:México
Institución:Centro Internacional de Mejoramiento de Maíz y Trigo
Repositorio:Repositorio Institucional de Publicaciones Multimedia del CIMMYT
OAI Identifier:oai:repository.cimmyt.org:10883/21602
Acceso en línea:https://hdl.handle.net/10883/21602
Access Level:acceso abierto
Palabra clave:AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Growth Stage
Nocturnal Conductance
DEVELOPMENTAL STAGES
STOMATA
TRITICUM AESTIVUM
WATER USE EFFICIENCY
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spelling Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variationMcAusland, L.Smith, K.E.Williams, A.Molero, G.Murchie, E.AGRICULTURAL SCIENCES AND BIOTECHNOLOGYGrowth StageNocturnal ConductanceDEVELOPMENTAL STAGESSTOMATATRITICUM AESTIVUMWATER USE EFFICIENCYNocturnal stomatal conductance (gsn) represents a significant source of water loss, with implications for metabolism, thermal regulation and water-use efficiency. With increasing nocturnal temperatures due to climate change, it is vital to identify and understand variation in the magnitude and responses of gsn in major crops. We assessed interspecific variation in gsn and daytime stomatal conductance (gs) in a wild relative and modern spring wheat genotype. To investigate intraspecific variation, we grew six modern wheat genotypes and two landraces under well watered, simulated field conditions. For the diurnal data, higher gsn in the wild relative was associated with significantly lower nocturnal respiration and higher daytime CO2 assimilation while both species exhibited declines in gsn post-dusk and pre-dawn. Lifetime gsn achieved rates of 5.7–18.9% of gs. Magnitude of gsn was genotype specific 'and positively correlated with gs. gsn and gs were significantly higher on the adaxial surface. No relationship was determined between harvest characteristics, stomatal morphology and gsn, while cuticular conductance was genotype specific. Finally, for the majority of genotypes, gsn declined with age. Here we present the discovery that variation in gsn occurs across developmental, morphological and temporal scales in nonstressed wheat, presenting opportunities for exploiting intrinsic variation under heat or water stressed conditions.162-175Wiley2021-08-07T00:20:12Z2021-08-07T00:20:12Z2021Published Versioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10883/2160210.1111/nph.1756312321469-8137New Phytologistreponame:Repositorio Institucional de Publicaciones Multimedia del CIMMYTinstname:Centro Internacional de Mejoramiento de Maíz y Trigoinstacron:CIMMYTEnglishhttps://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17563#support-information-sectionUnited KingdomCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purposeOpen Accessinfo:eu-repo/semantics/openAccessoai:repository.cimmyt.org:10883/216022024-10-11T19:56:44Z
dc.title.none.fl_str_mv Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
title Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
spellingShingle Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
McAusland, L.
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Growth Stage
Nocturnal Conductance
DEVELOPMENTAL STAGES
STOMATA
TRITICUM AESTIVUM
WATER USE EFFICIENCY
title_short Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
title_full Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
title_fullStr Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
title_full_unstemmed Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
title_sort Nocturnal stomatal conductance in wheat is growth-stage specific and shows genotypic variation
dc.creator.none.fl_str_mv McAusland, L.
Smith, K.E.
Williams, A.
Molero, G.
Murchie, E.
author McAusland, L.
author_facet McAusland, L.
Smith, K.E.
Williams, A.
Molero, G.
Murchie, E.
author_role author
author2 Smith, K.E.
Williams, A.
Molero, G.
Murchie, E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Growth Stage
Nocturnal Conductance
DEVELOPMENTAL STAGES
STOMATA
TRITICUM AESTIVUM
WATER USE EFFICIENCY
topic AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Growth Stage
Nocturnal Conductance
DEVELOPMENTAL STAGES
STOMATA
TRITICUM AESTIVUM
WATER USE EFFICIENCY
description Nocturnal stomatal conductance (gsn) represents a significant source of water loss, with implications for metabolism, thermal regulation and water-use efficiency. With increasing nocturnal temperatures due to climate change, it is vital to identify and understand variation in the magnitude and responses of gsn in major crops. We assessed interspecific variation in gsn and daytime stomatal conductance (gs) in a wild relative and modern spring wheat genotype. To investigate intraspecific variation, we grew six modern wheat genotypes and two landraces under well watered, simulated field conditions. For the diurnal data, higher gsn in the wild relative was associated with significantly lower nocturnal respiration and higher daytime CO2 assimilation while both species exhibited declines in gsn post-dusk and pre-dawn. Lifetime gsn achieved rates of 5.7–18.9% of gs. Magnitude of gsn was genotype specific 'and positively correlated with gs. gsn and gs were significantly higher on the adaxial surface. No relationship was determined between harvest characteristics, stomatal morphology and gsn, while cuticular conductance was genotype specific. Finally, for the majority of genotypes, gsn declined with age. Here we present the discovery that variation in gsn occurs across developmental, morphological and temporal scales in nonstressed wheat, presenting opportunities for exploiting intrinsic variation under heat or water stressed conditions.
publishDate 2021
dc.date.none.fl_str_mv 2021-08-07T00:20:12Z
2021-08-07T00:20:12Z
2021
dc.type.none.fl_str_mv Published Version
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10883/21602
10.1111/nph.17563
url https://hdl.handle.net/10883/21602
identifier_str_mv 10.1111/nph.17563
dc.language.none.fl_str_mv English
language_invalid_str_mv English
dc.relation.none.fl_str_mv https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17563#support-information-section
dc.rights.none.fl_str_mv Open Access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Open Access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv United Kingdom
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv 1
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New Phytologist
reponame:Repositorio Institucional de Publicaciones Multimedia del CIMMYT
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instacron_str CIMMYT
institution CIMMYT
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collection Repositorio Institucional de Publicaciones Multimedia del CIMMYT
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