Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript

The mechanisms of stomatal sensitivity to CO2 are yet to be fully understood. The role of photosynthetic and non-photosynthetic factors in stomatal responses to CO2 was investigated in wild-type barley (Hordeum vulgare var. Graphic) and in a mutant (G132) with decreased photochemical and Rubisco cap...

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Autores: Córdoba, Javier, Molina Cano, José Luis, Pérez, Pilar, Morcuende, Rosa, Moralejo Vidal, Mª Angeles, Savé i Montserrat, Robert, Martínez-Carrasco, Rafael
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/65047
Acceso en línea:https://doi.org/10.1016/j.plantsci.2015.07.011
http://hdl.handle.net/10459.1/65047
Access Level:acceso abierto
Palabra clave:CO2
Hordeum vulgare
Photosynthetic electron transport
Signalling
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spelling Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcriptCórdoba, JavierMolina Cano, José LuisPérez, PilarMorcuende, RosaMoralejo Vidal, Mª AngelesSavé i Montserrat, RobertMartínez-Carrasco, RafaelCO2Hordeum vulgarePhotosynthetic electron transportSignallingThe mechanisms of stomatal sensitivity to CO2 are yet to be fully understood. The role of photosynthetic and non-photosynthetic factors in stomatal responses to CO2 was investigated in wild-type barley (Hordeum vulgare var. Graphic) and in a mutant (G132) with decreased photochemical and Rubisco capacities. The CO2 and DCMU responses of stomatal conductance (gs), gas exchange, chlorophyll fluorescence and levels of ATP, with a putative transcript for stomatal opening were analysed. G132 had greater gs than the wild-type, despite lower photosynthesis rates and higher intercellular CO2 concentrations (Ci). The mutant had Rubisco-limited photosynthesis at very high CO2 levels, and higher ATP contents than the wild-type. Stomatal sensitivity to CO2 under red light was lower in G132 than in the wild-type, both in photosynthesizing and DCMU-inhibited leaves. Under constant Ci and red light, stomatal sensitivity to DCMU inhibition was higher in G132. The levels of a SLAH3-like slow anion channel transcript, involved in stomatal closure, decreased sharply in G132. The results suggest that stomatal responses to CO2 depend partly on the balance of photosynthetic electron transport to carbon assimilation capacities, but are partially regulated by the CO2 signalling network. High gs can improve the adaptation to climate change in wellwatered conditions.This work was funded by the Spanish Research and Development Programme-European Regional Development Fund, ERDF (Projects RTA2009-00006-C04-01 and AGL2009-11987) and the regional government, the Junta de Castilla y León (Projects CSI148A11-2 and CSI250U13). J. Córdoba was the recipient of a pre-doctoral contract from the National Institute of Agricultural and Food Research-INIA.Elsevier2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttps://doi.org/10.1016/j.plantsci.2015.07.011http://hdl.handle.net/10459.1/65047reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/MICINN//RTA2009-00006-C04-01info:eu-repo/grantAgreement/MICINN//AGL2009-11987Versió postprint del document publicat a https://doi.org/10.1016/j.plantsci.2015.07.011Plant Science, 2015, vol. 239, p. 15-25cc-by-nc-nd (c) Elsevier, 2015info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/650472026-06-24T12:42:17Z
dc.title.none.fl_str_mv Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
title Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
spellingShingle Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
Córdoba, Javier
CO2
Hordeum vulgare
Photosynthetic electron transport
Signalling
title_short Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
title_full Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
title_fullStr Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
title_full_unstemmed Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
title_sort Photosynthesis-dependent/independent control of stomatal responses to CO2 in mutant barley with surplus electron transport capacity and reduced SLAH3 anion channel transcript
dc.creator.none.fl_str_mv Córdoba, Javier
Molina Cano, José Luis
Pérez, Pilar
Morcuende, Rosa
Moralejo Vidal, Mª Angeles
Savé i Montserrat, Robert
Martínez-Carrasco, Rafael
author Córdoba, Javier
author_facet Córdoba, Javier
Molina Cano, José Luis
Pérez, Pilar
Morcuende, Rosa
Moralejo Vidal, Mª Angeles
Savé i Montserrat, Robert
Martínez-Carrasco, Rafael
author_role author
author2 Molina Cano, José Luis
Pérez, Pilar
Morcuende, Rosa
Moralejo Vidal, Mª Angeles
Savé i Montserrat, Robert
Martínez-Carrasco, Rafael
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv CO2
Hordeum vulgare
Photosynthetic electron transport
Signalling
topic CO2
Hordeum vulgare
Photosynthetic electron transport
Signalling
description The mechanisms of stomatal sensitivity to CO2 are yet to be fully understood. The role of photosynthetic and non-photosynthetic factors in stomatal responses to CO2 was investigated in wild-type barley (Hordeum vulgare var. Graphic) and in a mutant (G132) with decreased photochemical and Rubisco capacities. The CO2 and DCMU responses of stomatal conductance (gs), gas exchange, chlorophyll fluorescence and levels of ATP, with a putative transcript for stomatal opening were analysed. G132 had greater gs than the wild-type, despite lower photosynthesis rates and higher intercellular CO2 concentrations (Ci). The mutant had Rubisco-limited photosynthesis at very high CO2 levels, and higher ATP contents than the wild-type. Stomatal sensitivity to CO2 under red light was lower in G132 than in the wild-type, both in photosynthesizing and DCMU-inhibited leaves. Under constant Ci and red light, stomatal sensitivity to DCMU inhibition was higher in G132. The levels of a SLAH3-like slow anion channel transcript, involved in stomatal closure, decreased sharply in G132. The results suggest that stomatal responses to CO2 depend partly on the balance of photosynthetic electron transport to carbon assimilation capacities, but are partially regulated by the CO2 signalling network. High gs can improve the adaptation to climate change in wellwatered conditions.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.plantsci.2015.07.011
http://hdl.handle.net/10459.1/65047
url https://doi.org/10.1016/j.plantsci.2015.07.011
http://hdl.handle.net/10459.1/65047
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//RTA2009-00006-C04-01
info:eu-repo/grantAgreement/MICINN//AGL2009-11987
Versió postprint del document publicat a https://doi.org/10.1016/j.plantsci.2015.07.011
Plant Science, 2015, vol. 239, p. 15-25
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2015
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2015
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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