Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids

Autores
Zegada Lizarazu, Walter; Luna, Dario Fernando; Monti, Andrea
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Sweet sorghum has a photosynthetic system which is highly sensitive to cold stress and hence strongly limits its development in temperate environments; therefore, the identification of key exploitable cold tolerance traits is imperative. From a preliminary field trial, two dissimilar sweet sorghum hybrids (ICSSH31 and Bulldozer), in terms of early vigor and productivity, were selected for a controlled‐environment trial aiming at identifying useful traits related to acclimation mechanisms to cold stress. The higher cold tolerance of Bulldozer was partially related to a more efficient photochemical regulation mechanism of the incoming light energy: the higher tolerance of photosystem II (PSII) to photo‐inactivation was because of a more effective dissipation capacity of the excess of energy and to a more balanced diversion of the absorbed energy into alternative energy sinks. ICSSH31 increased the dissipation and accumulation of a large amount of xanthophylls, as in Bulldozer, but, at the same time, inactivated the oxygen evolving complex and the re‐synthesis of chlorophyll (Chl) a and b, thus, leading to an overproduction of CO2 fixation enzymes after re‐warming. In summary, in Bulldozer, the acclimation adjustments of the photosynthetic apparatus occurred through an efficient control of energy transfer toward the reaction centers, and this likely allowed a more successful seedling establishment; ICSSH31, conversely, exhibited a fast re‐synthesis of Chl pigments, which appears to divert photosynthates from dry matter accumulation. Such broad acclimation traits may constitute a source for selecting higher genetic gain traits relevant for enlarging the growing season of promising biomass sorghum ideotypes in temperate climates.
Instituto de Fisiología y Recursos Genéticos Vegetales
Fil: Zegada Lizarazu, Walter. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; Italia
Fil: Luna, Dario Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina
Fil: Monti, Andrea. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; Italia
Fuente
Physiologia plantarum 157 (4) : 479–489. (August 2016)
Materia
Sorghum Bicolor
Aclimatación
Híbridos
Frio
Tolerancia al Frío
Acclimatization
Hybrids
Cold
Cold Tolerance
Sorgo Dulce
Sweet Sorghum
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/4717
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network_name_str INTA Digital (INTA)
spelling Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybridsZegada Lizarazu, WalterLuna, Dario FernandoMonti, AndreaSorghum BicolorAclimataciónHíbridosFrioTolerancia al FríoAcclimatizationHybridsColdCold ToleranceSorgo DulceSweet SorghumSweet sorghum has a photosynthetic system which is highly sensitive to cold stress and hence strongly limits its development in temperate environments; therefore, the identification of key exploitable cold tolerance traits is imperative. From a preliminary field trial, two dissimilar sweet sorghum hybrids (ICSSH31 and Bulldozer), in terms of early vigor and productivity, were selected for a controlled‐environment trial aiming at identifying useful traits related to acclimation mechanisms to cold stress. The higher cold tolerance of Bulldozer was partially related to a more efficient photochemical regulation mechanism of the incoming light energy: the higher tolerance of photosystem II (PSII) to photo‐inactivation was because of a more effective dissipation capacity of the excess of energy and to a more balanced diversion of the absorbed energy into alternative energy sinks. ICSSH31 increased the dissipation and accumulation of a large amount of xanthophylls, as in Bulldozer, but, at the same time, inactivated the oxygen evolving complex and the re‐synthesis of chlorophyll (Chl) a and b, thus, leading to an overproduction of CO2 fixation enzymes after re‐warming. In summary, in Bulldozer, the acclimation adjustments of the photosynthetic apparatus occurred through an efficient control of energy transfer toward the reaction centers, and this likely allowed a more successful seedling establishment; ICSSH31, conversely, exhibited a fast re‐synthesis of Chl pigments, which appears to divert photosynthates from dry matter accumulation. Such broad acclimation traits may constitute a source for selecting higher genetic gain traits relevant for enlarging the growing season of promising biomass sorghum ideotypes in temperate climates.Instituto de Fisiología y Recursos Genéticos VegetalesFil: Zegada Lizarazu, Walter. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; ItaliaFil: Luna, Dario Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; ArgentinaFil: Monti, Andrea. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; ItaliaWiley; Scandinavian Plant Physiology Society2019-03-25T13:00:45Z2019-03-25T13:00:45Z2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/4717https://onlinelibrary.wiley.com/doi/full/10.1111/ppl.124300031-93171399-3054 (Online)https://doi.org/10.1111/ppl.12430Physiologia plantarum 157 (4) : 479–489. (August 2016)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:44:36Zoai:localhost:20.500.12123/4717instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:36.827INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
title Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
spellingShingle Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
Zegada Lizarazu, Walter
Sorghum Bicolor
Aclimatación
Híbridos
Frio
Tolerancia al Frío
Acclimatization
Hybrids
Cold
Cold Tolerance
Sorgo Dulce
Sweet Sorghum
title_short Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
title_full Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
title_fullStr Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
title_full_unstemmed Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
title_sort Differential characteristics of photochemical acclimation to cold in two contrasting sweet sorghum hybrids
dc.creator.none.fl_str_mv Zegada Lizarazu, Walter
Luna, Dario Fernando
Monti, Andrea
author Zegada Lizarazu, Walter
author_facet Zegada Lizarazu, Walter
Luna, Dario Fernando
Monti, Andrea
author_role author
author2 Luna, Dario Fernando
Monti, Andrea
author2_role author
author
dc.subject.none.fl_str_mv Sorghum Bicolor
Aclimatación
Híbridos
Frio
Tolerancia al Frío
Acclimatization
Hybrids
Cold
Cold Tolerance
Sorgo Dulce
Sweet Sorghum
topic Sorghum Bicolor
Aclimatación
Híbridos
Frio
Tolerancia al Frío
Acclimatization
Hybrids
Cold
Cold Tolerance
Sorgo Dulce
Sweet Sorghum
dc.description.none.fl_txt_mv Sweet sorghum has a photosynthetic system which is highly sensitive to cold stress and hence strongly limits its development in temperate environments; therefore, the identification of key exploitable cold tolerance traits is imperative. From a preliminary field trial, two dissimilar sweet sorghum hybrids (ICSSH31 and Bulldozer), in terms of early vigor and productivity, were selected for a controlled‐environment trial aiming at identifying useful traits related to acclimation mechanisms to cold stress. The higher cold tolerance of Bulldozer was partially related to a more efficient photochemical regulation mechanism of the incoming light energy: the higher tolerance of photosystem II (PSII) to photo‐inactivation was because of a more effective dissipation capacity of the excess of energy and to a more balanced diversion of the absorbed energy into alternative energy sinks. ICSSH31 increased the dissipation and accumulation of a large amount of xanthophylls, as in Bulldozer, but, at the same time, inactivated the oxygen evolving complex and the re‐synthesis of chlorophyll (Chl) a and b, thus, leading to an overproduction of CO2 fixation enzymes after re‐warming. In summary, in Bulldozer, the acclimation adjustments of the photosynthetic apparatus occurred through an efficient control of energy transfer toward the reaction centers, and this likely allowed a more successful seedling establishment; ICSSH31, conversely, exhibited a fast re‐synthesis of Chl pigments, which appears to divert photosynthates from dry matter accumulation. Such broad acclimation traits may constitute a source for selecting higher genetic gain traits relevant for enlarging the growing season of promising biomass sorghum ideotypes in temperate climates.
Instituto de Fisiología y Recursos Genéticos Vegetales
Fil: Zegada Lizarazu, Walter. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; Italia
Fil: Luna, Dario Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina
Fil: Monti, Andrea. Università di Bologna. Dipartimento di Scienze e Tecnologie Agro-Alimentari; Italia
description Sweet sorghum has a photosynthetic system which is highly sensitive to cold stress and hence strongly limits its development in temperate environments; therefore, the identification of key exploitable cold tolerance traits is imperative. From a preliminary field trial, two dissimilar sweet sorghum hybrids (ICSSH31 and Bulldozer), in terms of early vigor and productivity, were selected for a controlled‐environment trial aiming at identifying useful traits related to acclimation mechanisms to cold stress. The higher cold tolerance of Bulldozer was partially related to a more efficient photochemical regulation mechanism of the incoming light energy: the higher tolerance of photosystem II (PSII) to photo‐inactivation was because of a more effective dissipation capacity of the excess of energy and to a more balanced diversion of the absorbed energy into alternative energy sinks. ICSSH31 increased the dissipation and accumulation of a large amount of xanthophylls, as in Bulldozer, but, at the same time, inactivated the oxygen evolving complex and the re‐synthesis of chlorophyll (Chl) a and b, thus, leading to an overproduction of CO2 fixation enzymes after re‐warming. In summary, in Bulldozer, the acclimation adjustments of the photosynthetic apparatus occurred through an efficient control of energy transfer toward the reaction centers, and this likely allowed a more successful seedling establishment; ICSSH31, conversely, exhibited a fast re‐synthesis of Chl pigments, which appears to divert photosynthates from dry matter accumulation. Such broad acclimation traits may constitute a source for selecting higher genetic gain traits relevant for enlarging the growing season of promising biomass sorghum ideotypes in temperate climates.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
2019-03-25T13:00:45Z
2019-03-25T13:00:45Z
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 http://hdl.handle.net/20.500.12123/4717
https://onlinelibrary.wiley.com/doi/full/10.1111/ppl.12430
0031-9317
1399-3054 (Online)
https://doi.org/10.1111/ppl.12430
url http://hdl.handle.net/20.500.12123/4717
https://onlinelibrary.wiley.com/doi/full/10.1111/ppl.12430
https://doi.org/10.1111/ppl.12430
identifier_str_mv 0031-9317
1399-3054 (Online)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley; Scandinavian Plant Physiology Society
publisher.none.fl_str_mv Wiley; Scandinavian Plant Physiology Society
dc.source.none.fl_str_mv Physiologia plantarum 157 (4) : 479–489. (August 2016)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.559606

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