Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture
Abstract Background Developing high yielding varieties is a major challenge for breeders tackling the challenges of climate change in agriculture. The panicle (inflorescence) architecture of rice is one of the key components of yield potential and displays high inter- and intra-specific variability....
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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BioMed Central
2023
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| Acceso en línea: | https://hdl.handle.net/10568/137779 |
| _version_ | 1855515691074977792 |
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| author | Adam, Hélène Gutiérrez, Andrés Couderc, Marie Sabot, François Ntakirutimana, Fabrice Serret, Julien Orjuela, Julie Tregear, James Jouannic, Stefan Lorieux, Mathias |
| author_browse | Adam, Hélène Couderc, Marie Gutiérrez, Andrés Jouannic, Stefan Lorieux, Mathias Ntakirutimana, Fabrice Orjuela, Julie Sabot, François Serret, Julien Tregear, James |
| author_facet | Adam, Hélène Gutiérrez, Andrés Couderc, Marie Sabot, François Ntakirutimana, Fabrice Serret, Julien Orjuela, Julie Tregear, James Jouannic, Stefan Lorieux, Mathias |
| author_sort | Adam, Hélène |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Abstract Background Developing high yielding varieties is a major challenge for breeders tackling the challenges of climate change in agriculture. The panicle (inflorescence) architecture of rice is one of the key components of yield potential and displays high inter- and intra-specific variability. The genus Oryza features two different crop species: Asian rice ( Oryza sativa L.) and the African rice ( O. glaberrima Steud.). One of the main morphological differences between the two independently domesticated species is the structure (or complexity) of the panicle, with O. sativa displaying a highly branched panicle, which in turn produces a larger number of grains than that of O. glaberrima . The gene regulatory network that governs intra- and interspecific panicle diversity is still under-studied. Results To identify genetic factors linked to panicle architecture diversity in the two species, we used a set of 60 Chromosome Segment Substitution Lines (CSSLs) issued from third generation backcross (BC 3 DH) and carrying genomic segments from O. glaberrima cv. MG12 in the genetic background of O. sativa Tropical Japonica cv. Caiapó. Phenotypic data were collected for rachis and primary branch length, primary, secondary and tertiary branch number and spikelet number. A total of 15 QTLs were localized on chromosomes 1, 2, 3, 7, 11 and 12, QTLs associated with enhanced secondary and tertiary branch numbers were detected in two CSSLs. Furthermore, BC 4 F 3:5 lines carrying different combinations of substituted segments were produced to decipher the effects of the identified QTL regions on variations in panicle architecture. A detailed analysis of phenotypes versus genotypes was carried out between the two parental genomes within these regions in order to understand how O. glaberrima introgression events may lead to alterations in panicle traits. Conclusion Our analysis led to the detection of genomic variations between O. sativa cv. Caiapó and O. glaberrima cv. MG12 in regions associated with enhanced panicle traits in specific CSSLs. These regions contain a number of key genes that regulate panicle development in O. sativa and their interspecific genomic variations may explain the phenotypic effects observed. |
| format | Journal Article |
| id | CGSpace137779 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | BioMed Central |
| publisherStr | BioMed Central |
| record_format | dspace |
| spelling | CGSpace1377792025-11-11T17:41:41Z Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture Adam, Hélène Gutiérrez, Andrés Couderc, Marie Sabot, François Ntakirutimana, Fabrice Serret, Julien Orjuela, Julie Tregear, James Jouannic, Stefan Lorieux, Mathias genomics plant breeding yields genetic variation oryza sativa panicles quantitative trait loci Abstract Background Developing high yielding varieties is a major challenge for breeders tackling the challenges of climate change in agriculture. The panicle (inflorescence) architecture of rice is one of the key components of yield potential and displays high inter- and intra-specific variability. The genus Oryza features two different crop species: Asian rice ( Oryza sativa L.) and the African rice ( O. glaberrima Steud.). One of the main morphological differences between the two independently domesticated species is the structure (or complexity) of the panicle, with O. sativa displaying a highly branched panicle, which in turn produces a larger number of grains than that of O. glaberrima . The gene regulatory network that governs intra- and interspecific panicle diversity is still under-studied. Results To identify genetic factors linked to panicle architecture diversity in the two species, we used a set of 60 Chromosome Segment Substitution Lines (CSSLs) issued from third generation backcross (BC 3 DH) and carrying genomic segments from O. glaberrima cv. MG12 in the genetic background of O. sativa Tropical Japonica cv. Caiapó. Phenotypic data were collected for rachis and primary branch length, primary, secondary and tertiary branch number and spikelet number. A total of 15 QTLs were localized on chromosomes 1, 2, 3, 7, 11 and 12, QTLs associated with enhanced secondary and tertiary branch numbers were detected in two CSSLs. Furthermore, BC 4 F 3:5 lines carrying different combinations of substituted segments were produced to decipher the effects of the identified QTL regions on variations in panicle architecture. A detailed analysis of phenotypes versus genotypes was carried out between the two parental genomes within these regions in order to understand how O. glaberrima introgression events may lead to alterations in panicle traits. Conclusion Our analysis led to the detection of genomic variations between O. sativa cv. Caiapó and O. glaberrima cv. MG12 in regions associated with enhanced panicle traits in specific CSSLs. These regions contain a number of key genes that regulate panicle development in O. sativa and their interspecific genomic variations may explain the phenotypic effects observed. 2023-10-04 2024-01-16T09:41:39Z 2024-01-16T09:41:39Z Journal Article https://hdl.handle.net/10568/137779 en Open Access application/pdf BioMed Central Adam, H.; Gutiérrez, A.; Couderc, M.; Sabot, F.; Ntakirutimana, F.; Serret, J.; Orjuela, J.; Tregear, J.; Jouannic, S.; Lorieux, M. (2023) Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture. BMC Genomics 24(1): 587. ISSN: 1471-2164 |
| spellingShingle | genomics plant breeding yields genetic variation oryza sativa panicles quantitative trait loci Adam, Hélène Gutiérrez, Andrés Couderc, Marie Sabot, François Ntakirutimana, Fabrice Serret, Julien Orjuela, Julie Tregear, James Jouannic, Stefan Lorieux, Mathias Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title | Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title_full | Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title_fullStr | Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title_full_unstemmed | Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title_short | Genomic introgressions from African rice (Oryza glaberrima) in Asian rice (O. sativa) lead to the identification of key QTLs for panicle architecture |
| title_sort | genomic introgressions from african rice oryza glaberrima in asian rice o sativa lead to the identification of key qtls for panicle architecture |
| topic | genomics plant breeding yields genetic variation oryza sativa panicles quantitative trait loci |
| url | https://hdl.handle.net/10568/137779 |
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