Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression
**Introduction:** Drought and submergence are contrasting abiotic stresses that often occur in the same rice crop season and cause complete crop failure in many rain-fed lowland areas of Asia. **Methods:** To develop rice varieties with good tolerances to drought and submergence, 260 introgression...
| Autores principales: | , , , , , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Frontiers Media
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/163962 |
| _version_ | 1855513802114596864 |
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| author | Zhang, Chaopu Li, Min Rey, Jessica Domingo Feng, Ting Lafitte, Renee Zheng, Tianqing Lv, Yamei Wu, Fengcai Fu, Binying Xu, Jianlong Zhang, Fan Zeng, Wei Liu, Erbao Ali, Jauhar Wang, Wensheng Li, Zhikang |
| author_browse | Ali, Jauhar Feng, Ting Fu, Binying Lafitte, Renee Li, Min Li, Zhikang Liu, Erbao Lv, Yamei Rey, Jessica Domingo Wang, Wensheng Wu, Fengcai Xu, Jianlong Zeng, Wei Zhang, Chaopu Zhang, Fan Zheng, Tianqing |
| author_facet | Zhang, Chaopu Li, Min Rey, Jessica Domingo Feng, Ting Lafitte, Renee Zheng, Tianqing Lv, Yamei Wu, Fengcai Fu, Binying Xu, Jianlong Zhang, Fan Zeng, Wei Liu, Erbao Ali, Jauhar Wang, Wensheng Li, Zhikang |
| author_sort | Zhang, Chaopu |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | **Introduction:** Drought and submergence are contrasting abiotic stresses that often occur in the same rice crop season and cause complete crop failure in many rain-fed lowland areas of Asia.
**Methods:** To develop rice varieties with good tolerances to drought and submergence, 260 introgression lines (ILs) selected for drought tolerance (DT) from nine BC~2~ populations were screened for submergence tolerance (ST), resulting in 124 ILs with significantly improved ST.
**Results:** Genetic characterization of the 260 ILs with DNA markers identified 59 DT quantitative trait loci (QTLs) and 68 ST QTLs with an average 55% of the identified QTLs associated with both DT and ST. Approximately 50% of the DT QTLs showed 'epigenetic' segregation with very high donor introgression and/or loss of heterozygosity (LOH). Detailed comparison of the ST QTLs identified in ILs selected only for ST with ST QTLs detected in the DT-ST selected ILs of the same populations revealed three groups of QTLs underlying the relationship between DT and ST in rice: a) QTLs with pleiotropic effects on both DT and ST; b) QTLs with opposite effects on DT and ST; and c) QTLs with independent effects on DT and ST. Combined evidence identified most likely candidate genes for eight major QTLs affecting both DT and ST. Moreover, group b QTLs were involved in the *Sub1*regulated pathway that were negatively associated with most group aQTLs.
**Discussion:** These results were consistent with the current knowledge that DT and ST in rice are controlled by complex cross-talks between or among different phytohormone-mediated signaling pathways. Again, the results demonstrated that the strategy of selective introgression was powerful and efficient for simultaneous improvement and genetic dissection of multiple complex traits, including DT and ST. |
| format | Journal Article |
| id | CGSpace163962 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1639622025-12-08T10:29:22Z Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression Zhang, Chaopu Li, Min Rey, Jessica Domingo Feng, Ting Lafitte, Renee Zheng, Tianqing Lv, Yamei Wu, Fengcai Fu, Binying Xu, Jianlong Zhang, Fan Zeng, Wei Liu, Erbao Ali, Jauhar Wang, Wensheng Li, Zhikang abiotic stress drought introgresssion lines pleiotropy water tolerance **Introduction:** Drought and submergence are contrasting abiotic stresses that often occur in the same rice crop season and cause complete crop failure in many rain-fed lowland areas of Asia. **Methods:** To develop rice varieties with good tolerances to drought and submergence, 260 introgression lines (ILs) selected for drought tolerance (DT) from nine BC~2~ populations were screened for submergence tolerance (ST), resulting in 124 ILs with significantly improved ST. **Results:** Genetic characterization of the 260 ILs with DNA markers identified 59 DT quantitative trait loci (QTLs) and 68 ST QTLs with an average 55% of the identified QTLs associated with both DT and ST. Approximately 50% of the DT QTLs showed 'epigenetic' segregation with very high donor introgression and/or loss of heterozygosity (LOH). Detailed comparison of the ST QTLs identified in ILs selected only for ST with ST QTLs detected in the DT-ST selected ILs of the same populations revealed three groups of QTLs underlying the relationship between DT and ST in rice: a) QTLs with pleiotropic effects on both DT and ST; b) QTLs with opposite effects on DT and ST; and c) QTLs with independent effects on DT and ST. Combined evidence identified most likely candidate genes for eight major QTLs affecting both DT and ST. Moreover, group b QTLs were involved in the *Sub1*regulated pathway that were negatively associated with most group aQTLs. **Discussion:** These results were consistent with the current knowledge that DT and ST in rice are controlled by complex cross-talks between or among different phytohormone-mediated signaling pathways. Again, the results demonstrated that the strategy of selective introgression was powerful and efficient for simultaneous improvement and genetic dissection of multiple complex traits, including DT and ST. 2023-04-18 2024-12-19T12:53:14Z 2024-12-19T12:53:14Z Journal Article https://hdl.handle.net/10568/163962 en Open Access Frontiers Media Zhang, Chaopu; Li, Min; Rey, Jessica Domingo; Feng, Ting; Lafitte, Renee; Zheng, Tianqing; Lv, Yamei; Wu, Fengcai; Fu, Binying; Xu, Jianlong; Zhang, Fan; Zeng, Wei; Liu, Erbao; Ali, Jauhar; Wang, Wensheng and Li, Zhikang. 2023. Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression. Front. Plant Sci., Volume 14 |
| spellingShingle | abiotic stress drought introgresssion lines pleiotropy water tolerance Zhang, Chaopu Li, Min Rey, Jessica Domingo Feng, Ting Lafitte, Renee Zheng, Tianqing Lv, Yamei Wu, Fengcai Fu, Binying Xu, Jianlong Zhang, Fan Zeng, Wei Liu, Erbao Ali, Jauhar Wang, Wensheng Li, Zhikang Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title | Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title_full | Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title_fullStr | Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title_full_unstemmed | Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title_short | Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice (Oryza sativa L.) by selective introgression |
| title_sort | simultaneous improvement and genetic dissection of drought and submergence tolerances in rice oryza sativa l by selective introgression |
| topic | abiotic stress drought introgresssion lines pleiotropy water tolerance |
| url | https://hdl.handle.net/10568/163962 |
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