Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum
Drought is a major constraint on plant productivity globally. Sorghum [Sorghum bicolor (L.) Moench] landraces have evolved in drought-prone regions, but the genetics of their adaptation is poorly understood. Here we sought to identify novel drought-tolerance loci and test hypotheses on the role of known loci including those underlying stay-green (Stg) postflowering drought tolerance. We phenotyped 590 diverse sorghum accessions from West Africa in 10 environments, under field-based managed drought stress [preflowering water stress (WS1), postflowering water stress (WS2), and well-watered (WW)] and rainfed (RF) conditions over 4 yr. Days to 50% flowering (DFLo), aboveground dry biomass (DBM), plant height (PH), and plant grain yield components (including grain weight [GrW], panicle weight [PW] and grain number [GrN] per plant, and 1000-grain weight [TGrW]) were measured, and genome-wide association studies (GWAS) was conducted. Broad-sense heritability for biomass and plant grain yield was high (33–92%) across environments. There was a significant correlation between stress tolerance index (STI) for GrW per plant across WS1 and WS2. Genome-wide association studies revealed that SbZfl1 and SbCN12, orthologs of maize (Zea mays L.) flowering genes, likely underlie flowering time variation under these conditions. Genome-wide association studies further identified associations (n = 134; common between two GWAS models) for STI and drought effects on plant yield components including 16 putative pleiotropic associations. Thirty of the associations colocalized with Stg1, Stg2, Stg3, and Stg4 loci and had large effects. Seven lead associations, including some within Stg1, overlapped with positive selection outliers. Our findings reveal previously undescribed natural genetic variation for drought-tolerance-related traits and suggest a broad role of Stg loci in drought adaptation of sorghum.
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dig-cirad-fr-606408 |
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CIRAD FR |
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Francia |
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FR |
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Bibliográfico |
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Europa del Oeste |
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Biblioteca del CIRAD Francia |
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eng |
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F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 |
spellingShingle |
F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 Faye, Jacques Akata, Eyanawa Sine, Bassirou Diatta, Cyril Cissé, Ndiaga Fonceka, Daniel Morris, Geoffrey P. Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
description |
Drought is a major constraint on plant productivity globally. Sorghum [Sorghum bicolor (L.) Moench] landraces have evolved in drought-prone regions, but the genetics of their adaptation is poorly understood. Here we sought to identify novel drought-tolerance loci and test hypotheses on the role of known loci including those underlying stay-green (Stg) postflowering drought tolerance. We phenotyped 590 diverse sorghum accessions from West Africa in 10 environments, under field-based managed drought stress [preflowering water stress (WS1), postflowering water stress (WS2), and well-watered (WW)] and rainfed (RF) conditions over 4 yr. Days to 50% flowering (DFLo), aboveground dry biomass (DBM), plant height (PH), and plant grain yield components (including grain weight [GrW], panicle weight [PW] and grain number [GrN] per plant, and 1000-grain weight [TGrW]) were measured, and genome-wide association studies (GWAS) was conducted. Broad-sense heritability for biomass and plant grain yield was high (33–92%) across environments. There was a significant correlation between stress tolerance index (STI) for GrW per plant across WS1 and WS2. Genome-wide association studies revealed that SbZfl1 and SbCN12, orthologs of maize (Zea mays L.) flowering genes, likely underlie flowering time variation under these conditions. Genome-wide association studies further identified associations (n = 134; common between two GWAS models) for STI and drought effects on plant yield components including 16 putative pleiotropic associations. Thirty of the associations colocalized with Stg1, Stg2, Stg3, and Stg4 loci and had large effects. Seven lead associations, including some within Stg1, overlapped with positive selection outliers. Our findings reveal previously undescribed natural genetic variation for drought-tolerance-related traits and suggest a broad role of Stg loci in drought adaptation of sorghum. |
format |
article |
topic_facet |
F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 |
author |
Faye, Jacques Akata, Eyanawa Sine, Bassirou Diatta, Cyril Cissé, Ndiaga Fonceka, Daniel Morris, Geoffrey P. |
author_facet |
Faye, Jacques Akata, Eyanawa Sine, Bassirou Diatta, Cyril Cissé, Ndiaga Fonceka, Daniel Morris, Geoffrey P. |
author_sort |
Faye, Jacques |
title |
Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
title_short |
Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
title_full |
Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
title_fullStr |
Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
title_full_unstemmed |
Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
title_sort |
quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum |
url |
http://agritrop.cirad.fr/606408/ http://agritrop.cirad.fr/606408/1/ID606408.pdf |
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1806037039418703872 |
spelling |
dig-cirad-fr-6064082024-06-27T13:07:40Z http://agritrop.cirad.fr/606408/ http://agritrop.cirad.fr/606408/ Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum. Faye Jacques, Akata Eyanawa, Sine Bassirou, Diatta Cyril, Cissé Ndiaga, Fonceka Daniel, Morris Geoffrey P.. 2022. Plant Genome, 15 (1):e20176, 17 p.https://doi.org/10.1002/tpg2.20176 <https://doi.org/10.1002/tpg2.20176> Quantitative and population genomics suggest a broad role of stay-green loci in the drought adaptation of sorghum Faye, Jacques Akata, Eyanawa Sine, Bassirou Diatta, Cyril Cissé, Ndiaga Fonceka, Daniel Morris, Geoffrey P. eng 2022 Plant Genome F30 - Génétique et amélioration des plantes H50 - Troubles divers des plantes Sorghum bicolor locus des caractères quantitatifs tolérance à la sécheresse stress dû à la sécheresse adaptation aux changements climatiques résistance à la sécheresse changement climatique héritabilité génotypique génome locus sorgho en grain Sorghum phytogénétique http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_37974 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_1374567058134 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_1373982832607 http://aims.fao.org/aos/agrovoc/c_3224 http://aims.fao.org/aos/agrovoc/c_24869 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_49985 Afrique occidentale Sénégal Mali Togo Niger http://aims.fao.org/aos/agrovoc/c_8355 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_7801 http://aims.fao.org/aos/agrovoc/c_5181 Drought is a major constraint on plant productivity globally. Sorghum [Sorghum bicolor (L.) Moench] landraces have evolved in drought-prone regions, but the genetics of their adaptation is poorly understood. Here we sought to identify novel drought-tolerance loci and test hypotheses on the role of known loci including those underlying stay-green (Stg) postflowering drought tolerance. We phenotyped 590 diverse sorghum accessions from West Africa in 10 environments, under field-based managed drought stress [preflowering water stress (WS1), postflowering water stress (WS2), and well-watered (WW)] and rainfed (RF) conditions over 4 yr. Days to 50% flowering (DFLo), aboveground dry biomass (DBM), plant height (PH), and plant grain yield components (including grain weight [GrW], panicle weight [PW] and grain number [GrN] per plant, and 1000-grain weight [TGrW]) were measured, and genome-wide association studies (GWAS) was conducted. Broad-sense heritability for biomass and plant grain yield was high (33–92%) across environments. There was a significant correlation between stress tolerance index (STI) for GrW per plant across WS1 and WS2. Genome-wide association studies revealed that SbZfl1 and SbCN12, orthologs of maize (Zea mays L.) flowering genes, likely underlie flowering time variation under these conditions. Genome-wide association studies further identified associations (n = 134; common between two GWAS models) for STI and drought effects on plant yield components including 16 putative pleiotropic associations. Thirty of the associations colocalized with Stg1, Stg2, Stg3, and Stg4 loci and had large effects. Seven lead associations, including some within Stg1, overlapped with positive selection outliers. Our findings reveal previously undescribed natural genetic variation for drought-tolerance-related traits and suggest a broad role of Stg loci in drought adaptation of sorghum. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/606408/1/ID606408.pdf text cc_by_nc_nd info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ https://doi.org/10.1002/tpg2.20176 10.1002/tpg2.20176 info:eu-repo/semantics/altIdentifier/doi/10.1002/tpg2.20176 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/tpg2.20176 info:eu-repo/semantics/dataset/purl/https://doi.org/10.5061/dryad.1jwstqjw8 |