Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress

Autores
Ortiz, Diego; Salas Fernandez, María G.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Drought stress causes crop yield losses worldwide. Sorghum is a C4 species tolerant to moderate drought stress, and its extensive natural variation for photosynthetic traits under water-limiting conditions can be exploited for developing cultivars with enhanced stress tolerance. The objective of this study was to discover genes/genomic regions that control the sorghum photosynthetic capacity under pre-anthesis water-limiting conditions. We performed a genome-wide association study for seven photosynthetic gas exchange and chlorophyll fluorescence traits during three periods of contrasting soil volumetric water content (VWC): control (30% VWC), drought (15% VWC), and recovery (30% VWC). Water stress was imposed with an automated irrigation system that generated a controlled dry-down period for all plants, to perform an unbiased genotypic comparison. A total of 60 genomic regions were associated with natural variation in one or more photosynthetic traits in a particular treatment or with derived variables. We identified 33 promising candidate genes with predicted functions related to stress signaling, oxidative stress protection, hormonal response to stress, and dehydration protection. Our results provide new knowledge about the natural variation and genetic control of sorghum photosynthetic response to drought with the ultimate goal of improving its adaptation and productivity under water stress scenarios.
EEA Manfredi
Fil: Ortiz, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina
Fil: Salas-Fernandez, María G. Iowa State University. Department of Agronomy; Estados Unidos
Fuente
Journal of Experimental Botany 73 (10) : 3251-3267. (May 2022)
Materia
Sorgo
Sorghum bicolor
Control Genético
Estrés de Sequia
Rendimiento de Cultivos
Fluorescencia de Clorofila
Sequia
Sorghum
Genetic Control
Drought Stress
Crop Yield
Chlorophyll Fluorescence
Drought
Variación Natural
Natural Variation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/17803
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oai_identifier_str oai:localhost:20.500.12123/17803
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spelling Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stressOrtiz, DiegoSalas Fernandez, María G.SorgoSorghum bicolorControl GenéticoEstrés de SequiaRendimiento de CultivosFluorescencia de ClorofilaSequiaSorghumGenetic ControlDrought StressCrop YieldChlorophyll FluorescenceDroughtVariación NaturalNatural VariationDrought stress causes crop yield losses worldwide. Sorghum is a C4 species tolerant to moderate drought stress, and its extensive natural variation for photosynthetic traits under water-limiting conditions can be exploited for developing cultivars with enhanced stress tolerance. The objective of this study was to discover genes/genomic regions that control the sorghum photosynthetic capacity under pre-anthesis water-limiting conditions. We performed a genome-wide association study for seven photosynthetic gas exchange and chlorophyll fluorescence traits during three periods of contrasting soil volumetric water content (VWC): control (30% VWC), drought (15% VWC), and recovery (30% VWC). Water stress was imposed with an automated irrigation system that generated a controlled dry-down period for all plants, to perform an unbiased genotypic comparison. A total of 60 genomic regions were associated with natural variation in one or more photosynthetic traits in a particular treatment or with derived variables. We identified 33 promising candidate genes with predicted functions related to stress signaling, oxidative stress protection, hormonal response to stress, and dehydration protection. Our results provide new knowledge about the natural variation and genetic control of sorghum photosynthetic response to drought with the ultimate goal of improving its adaptation and productivity under water stress scenarios.EEA ManfrediFil: Ortiz, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; ArgentinaFil: Salas-Fernandez, María G. Iowa State University. Department of Agronomy; Estados UnidosOxford Academic Press2024-05-20T10:44:24Z2024-05-20T10:44:24Z2022-05-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/17803https://academic.oup.com/jxb/article/73/10/3251/64293041460-2431 (Online)0022-0957 (Print)https://doi.org/10.1093/jxb/erab502Journal of Experimental Botany 73 (10) : 3251-3267. (May 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-23T11:18:52Zoai:localhost:20.500.12123/17803instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-23 11:18:52.905INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
title Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
spellingShingle Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
Ortiz, Diego
Sorgo
Sorghum bicolor
Control Genético
Estrés de Sequia
Rendimiento de Cultivos
Fluorescencia de Clorofila
Sequia
Sorghum
Genetic Control
Drought Stress
Crop Yield
Chlorophyll Fluorescence
Drought
Variación Natural
Natural Variation
title_short Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
title_full Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
title_fullStr Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
title_full_unstemmed Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
title_sort Dissecting the genetic control of natural variation in sorghum photosynthetic response to drought stress
dc.creator.none.fl_str_mv Ortiz, Diego
Salas Fernandez, María G.
author Ortiz, Diego
author_facet Ortiz, Diego
Salas Fernandez, María G.
author_role author
author2 Salas Fernandez, María G.
author2_role author
dc.subject.none.fl_str_mv Sorgo
Sorghum bicolor
Control Genético
Estrés de Sequia
Rendimiento de Cultivos
Fluorescencia de Clorofila
Sequia
Sorghum
Genetic Control
Drought Stress
Crop Yield
Chlorophyll Fluorescence
Drought
Variación Natural
Natural Variation
topic Sorgo
Sorghum bicolor
Control Genético
Estrés de Sequia
Rendimiento de Cultivos
Fluorescencia de Clorofila
Sequia
Sorghum
Genetic Control
Drought Stress
Crop Yield
Chlorophyll Fluorescence
Drought
Variación Natural
Natural Variation
dc.description.none.fl_txt_mv Drought stress causes crop yield losses worldwide. Sorghum is a C4 species tolerant to moderate drought stress, and its extensive natural variation for photosynthetic traits under water-limiting conditions can be exploited for developing cultivars with enhanced stress tolerance. The objective of this study was to discover genes/genomic regions that control the sorghum photosynthetic capacity under pre-anthesis water-limiting conditions. We performed a genome-wide association study for seven photosynthetic gas exchange and chlorophyll fluorescence traits during three periods of contrasting soil volumetric water content (VWC): control (30% VWC), drought (15% VWC), and recovery (30% VWC). Water stress was imposed with an automated irrigation system that generated a controlled dry-down period for all plants, to perform an unbiased genotypic comparison. A total of 60 genomic regions were associated with natural variation in one or more photosynthetic traits in a particular treatment or with derived variables. We identified 33 promising candidate genes with predicted functions related to stress signaling, oxidative stress protection, hormonal response to stress, and dehydration protection. Our results provide new knowledge about the natural variation and genetic control of sorghum photosynthetic response to drought with the ultimate goal of improving its adaptation and productivity under water stress scenarios.
EEA Manfredi
Fil: Ortiz, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina
Fil: Salas-Fernandez, María G. Iowa State University. Department of Agronomy; Estados Unidos
description Drought stress causes crop yield losses worldwide. Sorghum is a C4 species tolerant to moderate drought stress, and its extensive natural variation for photosynthetic traits under water-limiting conditions can be exploited for developing cultivars with enhanced stress tolerance. The objective of this study was to discover genes/genomic regions that control the sorghum photosynthetic capacity under pre-anthesis water-limiting conditions. We performed a genome-wide association study for seven photosynthetic gas exchange and chlorophyll fluorescence traits during three periods of contrasting soil volumetric water content (VWC): control (30% VWC), drought (15% VWC), and recovery (30% VWC). Water stress was imposed with an automated irrigation system that generated a controlled dry-down period for all plants, to perform an unbiased genotypic comparison. A total of 60 genomic regions were associated with natural variation in one or more photosynthetic traits in a particular treatment or with derived variables. We identified 33 promising candidate genes with predicted functions related to stress signaling, oxidative stress protection, hormonal response to stress, and dehydration protection. Our results provide new knowledge about the natural variation and genetic control of sorghum photosynthetic response to drought with the ultimate goal of improving its adaptation and productivity under water stress scenarios.
publishDate 2022
dc.date.none.fl_str_mv 2022-05-23
2024-05-20T10:44:24Z
2024-05-20T10:44:24Z
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/20.500.12123/17803
https://academic.oup.com/jxb/article/73/10/3251/6429304
1460-2431 (Online)
0022-0957 (Print)
https://doi.org/10.1093/jxb/erab502
url http://hdl.handle.net/20.500.12123/17803
https://academic.oup.com/jxb/article/73/10/3251/6429304
https://doi.org/10.1093/jxb/erab502
identifier_str_mv 1460-2431 (Online)
0022-0957 (Print)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford Academic Press
publisher.none.fl_str_mv Oxford Academic Press
dc.source.none.fl_str_mv Journal of Experimental Botany 73 (10) : 3251-3267. (May 2022)
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 12.982451

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