Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering

Autores
Neiff, Nicolás; Ploschuk, Edmundo Leonardo; Valentinuz, Oscar Rodolfo; Andrade, Fernando Héctor
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Neiff, Nicolás. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Neiff, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina.
Fil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.
Fil: Valentinuz, Oscar Rodolfo. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Paraná; Argentina.
Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Balcarce; Argentina.
Heat stress affects physiological traits and biomass production in major crops, including maize. We researched the responses of maximum efficiency of photosystem II (Fv/Fm), relative cell injury (RCI), stomatal conductance (gs ), internal CO2 concentration (Ci ), leaf photosynthesis (CER), and crop growth rate (CGR) in two maize cultivars exposed to high temperatures around silking (R1) under field conditions. Temperature regimes (i.e. control and heat) were performed during the pre-silking (–15d R1 to R1) and post-silking (R1+2d to R1+17d) periods. In the heat treatments, polyethylene shelters were used in order to increase daytime temperatures around midday (from 10 A.M. to 2 P.M.) during each period (i.e., pre- and post-silking). In the control treatments, the shelters remained open during the entire growing season. Gas exchange variables, Fv/Fm and relative cell injury (RCI) were measured on ear leaves. CGR was estimated based on biomass samples. CER and Fv/Fm presented maximum reductions at the end of the daytime heating. However, 30 min after the shelters were reopened, Fv/Fm of heated leaves reached values similar to controls, which were closely linked to CER recoveries. RCI was negatively associated with Fv/Fm, and cell injury increased gradually as heating continued. Ci was unaffected by heat treatment, indicating that gs was not the primary cause of CER reduction. Heat stress decreased CGR, and the reduction was positively associated with CER and Fv/Fm in both heating periods. We attempted to scale from cell to crop level and identify some physiological traits that could be helpful in breeding programs for heat stress tolerance.
Fuente
Australian Journal of Crop Science, 2019, vol. 13, no. 12, p. 2053-2061.
Materia
Biomass production
Climate change
Heat stress
Photosynthesis
Zea mays
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
Institución
Universidad Nacional del Nordeste
OAI Identificador
oai:repositorio.unne.edu.ar:123456789/55323

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network_acronym_str RIUNNE
repository_id_str 4871
network_name_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
spelling Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at floweringNeiff, NicolásPloschuk, Edmundo LeonardoValentinuz, Oscar RodolfoAndrade, Fernando HéctorBiomass productionClimate changeHeat stressPhotosynthesisZea maysFil: Neiff, Nicolás. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Neiff, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina.Fil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.Fil: Valentinuz, Oscar Rodolfo. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Paraná; Argentina.Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Balcarce; Argentina.Heat stress affects physiological traits and biomass production in major crops, including maize. We researched the responses of maximum efficiency of photosystem II (Fv/Fm), relative cell injury (RCI), stomatal conductance (gs ), internal CO2 concentration (Ci ), leaf photosynthesis (CER), and crop growth rate (CGR) in two maize cultivars exposed to high temperatures around silking (R1) under field conditions. Temperature regimes (i.e. control and heat) were performed during the pre-silking (–15d R1 to R1) and post-silking (R1+2d to R1+17d) periods. In the heat treatments, polyethylene shelters were used in order to increase daytime temperatures around midday (from 10 A.M. to 2 P.M.) during each period (i.e., pre- and post-silking). In the control treatments, the shelters remained open during the entire growing season. Gas exchange variables, Fv/Fm and relative cell injury (RCI) were measured on ear leaves. CGR was estimated based on biomass samples. CER and Fv/Fm presented maximum reductions at the end of the daytime heating. However, 30 min after the shelters were reopened, Fv/Fm of heated leaves reached values similar to controls, which were closely linked to CER recoveries. RCI was negatively associated with Fv/Fm, and cell injury increased gradually as heating continued. Ci was unaffected by heat treatment, indicating that gs was not the primary cause of CER reduction. Heat stress decreased CGR, and the reduction was positively associated with CER and Fv/Fm in both heating periods. We attempted to scale from cell to crop level and identify some physiological traits that could be helpful in breeding programs for heat stress tolerance.Southern Cross Publishing2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfp. 2053-2061application/pdfNeiff, Nicolás, et al., 2019. Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering. Australian Journal of Crop Science. Lismore: Southern Cross Publishing, vol. 13, no. 12, p. 2053-2061. E-ISSN: 1835-2707. DOI: https://doi.org/10.21475/ajcs.19.13.12.p2070.1835-2693http://repositorio.unne.edu.ar/handle/123456789/55323Australian Journal of Crop Science, 2019, vol. 13, no. 12, p. 2053-2061.reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)instname:Universidad Nacional del Nordesteenghttps://doi.org/10.21475/ajcs.19.13.12.p2070info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Atribución-NoComercial-SinDerivadas 2.5 Argentina2025-09-29T14:29:17Zoai:repositorio.unne.edu.ar:123456789/55323instacron:UNNEInstitucionalhttp://repositorio.unne.edu.ar/Universidad públicaNo correspondehttp://repositorio.unne.edu.ar/oaiososa@bib.unne.edu.ar;sergio.alegria@unne.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:48712025-09-29 14:29:18.199Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordestefalse
dc.title.none.fl_str_mv Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
title Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
spellingShingle Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
Neiff, Nicolás
Biomass production
Climate change
Heat stress
Photosynthesis
Zea mays
title_short Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
title_full Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
title_fullStr Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
title_full_unstemmed Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
title_sort Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
dc.creator.none.fl_str_mv Neiff, Nicolás
Ploschuk, Edmundo Leonardo
Valentinuz, Oscar Rodolfo
Andrade, Fernando Héctor
author Neiff, Nicolás
author_facet Neiff, Nicolás
Ploschuk, Edmundo Leonardo
Valentinuz, Oscar Rodolfo
Andrade, Fernando Héctor
author_role author
author2 Ploschuk, Edmundo Leonardo
Valentinuz, Oscar Rodolfo
Andrade, Fernando Héctor
author2_role author
author
author
dc.subject.none.fl_str_mv Biomass production
Climate change
Heat stress
Photosynthesis
Zea mays
topic Biomass production
Climate change
Heat stress
Photosynthesis
Zea mays
dc.description.none.fl_txt_mv Fil: Neiff, Nicolás. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Neiff, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina.
Fil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.
Fil: Valentinuz, Oscar Rodolfo. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Paraná; Argentina.
Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Balcarce; Argentina.
Heat stress affects physiological traits and biomass production in major crops, including maize. We researched the responses of maximum efficiency of photosystem II (Fv/Fm), relative cell injury (RCI), stomatal conductance (gs ), internal CO2 concentration (Ci ), leaf photosynthesis (CER), and crop growth rate (CGR) in two maize cultivars exposed to high temperatures around silking (R1) under field conditions. Temperature regimes (i.e. control and heat) were performed during the pre-silking (–15d R1 to R1) and post-silking (R1+2d to R1+17d) periods. In the heat treatments, polyethylene shelters were used in order to increase daytime temperatures around midday (from 10 A.M. to 2 P.M.) during each period (i.e., pre- and post-silking). In the control treatments, the shelters remained open during the entire growing season. Gas exchange variables, Fv/Fm and relative cell injury (RCI) were measured on ear leaves. CGR was estimated based on biomass samples. CER and Fv/Fm presented maximum reductions at the end of the daytime heating. However, 30 min after the shelters were reopened, Fv/Fm of heated leaves reached values similar to controls, which were closely linked to CER recoveries. RCI was negatively associated with Fv/Fm, and cell injury increased gradually as heating continued. Ci was unaffected by heat treatment, indicating that gs was not the primary cause of CER reduction. Heat stress decreased CGR, and the reduction was positively associated with CER and Fv/Fm in both heating periods. We attempted to scale from cell to crop level and identify some physiological traits that could be helpful in breeding programs for heat stress tolerance.
description Fil: Neiff, Nicolás. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Neiff, Nicolás, et al., 2019. Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering. Australian Journal of Crop Science. Lismore: Southern Cross Publishing, vol. 13, no. 12, p. 2053-2061. E-ISSN: 1835-2707. DOI: https://doi.org/10.21475/ajcs.19.13.12.p2070.
1835-2693
http://repositorio.unne.edu.ar/handle/123456789/55323
identifier_str_mv Neiff, Nicolás, et al., 2019. Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering. Australian Journal of Crop Science. Lismore: Southern Cross Publishing, vol. 13, no. 12, p. 2053-2061. E-ISSN: 1835-2707. DOI: https://doi.org/10.21475/ajcs.19.13.12.p2070.
1835-2693
url http://repositorio.unne.edu.ar/handle/123456789/55323
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://doi.org/10.21475/ajcs.19.13.12.p2070
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
dc.format.none.fl_str_mv application/pdf
p. 2053-2061
application/pdf
dc.publisher.none.fl_str_mv Southern Cross Publishing
publisher.none.fl_str_mv Southern Cross Publishing
dc.source.none.fl_str_mv Australian Journal of Crop Science, 2019, vol. 13, no. 12, p. 2053-2061.
reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname:Universidad Nacional del Nordeste
reponame_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
collection Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname_str Universidad Nacional del Nordeste
repository.name.fl_str_mv Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordeste
repository.mail.fl_str_mv ososa@bib.unne.edu.ar;sergio.alegria@unne.edu.ar
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