Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions
Sorghum (Sorghum bicolor L. Moench) is a C4 species sensitive to the cold spring conditions that occur at northern latitudes, especially when coupled with excessive light, and that greatly affect the photosynthetic rate. The objective of this study was to discover genes/genomic regions that control...
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Oxford University Press
2024
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/18189 https://academic.oup.com/jxb/article/68/16/4545/4084715 https://doi.org/10.1093/jxb/erx276 |
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| author | Ortiz, Diego Hu, Jieyun Salas Fernandez, Maria G. |
| author_browse | Hu, Jieyun Ortiz, Diego Salas Fernandez, Maria G. |
| author_facet | Ortiz, Diego Hu, Jieyun Salas Fernandez, Maria G. |
| author_sort | Ortiz, Diego |
| collection | INTA Digital |
| description | Sorghum (Sorghum bicolor L. Moench) is a C4 species sensitive to the cold spring conditions that occur at northern latitudes, especially when coupled with excessive light, and that greatly affect the photosynthetic rate. The objective of this study was to discover genes/genomic regions that control the capacity to cope with excessive energy under low temperature conditions during the vegetative growth period. A genome-wide association study (GWAS) was conducted for seven photosynthetic gas exchange and chlorophyll fluorescence traits under three consecutive temperature treatments: control (28 °C/24 °C), cold (15 °C/15 °C), and recovery (28 °C/24 °C). Cold stress significantly reduced the rate of photosynthetic CO2 uptake of sorghum plants, and a total of 143 unique genomic regions were discovered associated with at least one trait in a particular treatment or with derived variables. Ten regions on chromosomes 3, 4, 6, 7, and 8 that harbor multiple significant markers in linkage disequilibrium (LD) were consistently identified in gas exchange and chlorophyll fluorescence traits. Several candidate genes within those intervals have predicted functions related to carotenoids, phytohormones, thioredoxin, components of PSI, and antioxidants. These regions represent the most promising results for future validation and with potential application for the improvement of crop productivity under cold stress. |
| format | info:ar-repo/semantics/artículo |
| id | INTA18189 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | INTA181892024-06-18T10:21:37Z Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions Ortiz, Diego Hu, Jieyun Salas Fernandez, Maria G. Chlorophyll Fluorescence Cold Photosynthesis Cold Stress Fluorescencia de Clorofila Frio Sorghum bicolor Fotosíntesis Estrés de Frío Photoprotection Crop Productivity Fotoprotección Productividad de Cultivos Sorghum (Sorghum bicolor L. Moench) is a C4 species sensitive to the cold spring conditions that occur at northern latitudes, especially when coupled with excessive light, and that greatly affect the photosynthetic rate. The objective of this study was to discover genes/genomic regions that control the capacity to cope with excessive energy under low temperature conditions during the vegetative growth period. A genome-wide association study (GWAS) was conducted for seven photosynthetic gas exchange and chlorophyll fluorescence traits under three consecutive temperature treatments: control (28 °C/24 °C), cold (15 °C/15 °C), and recovery (28 °C/24 °C). Cold stress significantly reduced the rate of photosynthetic CO2 uptake of sorghum plants, and a total of 143 unique genomic regions were discovered associated with at least one trait in a particular treatment or with derived variables. Ten regions on chromosomes 3, 4, 6, 7, and 8 that harbor multiple significant markers in linkage disequilibrium (LD) were consistently identified in gas exchange and chlorophyll fluorescence traits. Several candidate genes within those intervals have predicted functions related to carotenoids, phytohormones, thioredoxin, components of PSI, and antioxidants. These regions represent the most promising results for future validation and with potential application for the improvement of crop productivity under cold stress. EEA Manfredi Fil: Ortiz, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina. Iowa State University. Department of Agronomy; Estados Unidos Fil: Hu, Jieyun. Iowa State University. Department of Agronomy; Estados Unidos Fil: Salas-Fernandez, María G. Iowa State University. Department of Agronomy; Estados Unidos 2024-06-18T10:11:51Z 2024-06-18T10:11:51Z 2017-10-03 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/18189 https://academic.oup.com/jxb/article/68/16/4545/4084715 0022-0957 (Print) 1460-2431 (online) https://doi.org/10.1093/jxb/erx276 eng 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) application/pdf Oxford University Press Journal of Experimental Botany 68 (16) : 4545-4557. (October 2017) |
| spellingShingle | Chlorophyll Fluorescence Cold Photosynthesis Cold Stress Fluorescencia de Clorofila Frio Sorghum bicolor Fotosíntesis Estrés de Frío Photoprotection Crop Productivity Fotoprotección Productividad de Cultivos Ortiz, Diego Hu, Jieyun Salas Fernandez, Maria G. Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title | Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title_full | Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title_fullStr | Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title_full_unstemmed | Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title_short | Genetic architecture of photosynthesis in Sorghum bicolor under non-stress and cold stress conditions |
| title_sort | genetic architecture of photosynthesis in sorghum bicolor under non stress and cold stress conditions |
| topic | Chlorophyll Fluorescence Cold Photosynthesis Cold Stress Fluorescencia de Clorofila Frio Sorghum bicolor Fotosíntesis Estrés de Frío Photoprotection Crop Productivity Fotoprotección Productividad de Cultivos |
| url | http://hdl.handle.net/20.500.12123/18189 https://academic.oup.com/jxb/article/68/16/4545/4084715 https://doi.org/10.1093/jxb/erx276 |
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