Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population
In the rapid climate change scenario and subsequent rainfall patterns, drought has emerged as a bottleneck for crop production across crops, especially in rainfed rice. Drought significantly affects the development and production of most modern rice cultivars. Thus, recent breeding efforts have aime...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2024.1495241/full |
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| author | Challa Venkateshwarlu Challa Venkateshwarlu Paresh Chandra Kole Arun Kumar Singh Pronob J. Paul Pallavi Sinha Vikas Kumar Singh Arvind Kumar |
| author_facet | Challa Venkateshwarlu Challa Venkateshwarlu Paresh Chandra Kole Arun Kumar Singh Pronob J. Paul Pallavi Sinha Vikas Kumar Singh Arvind Kumar |
| author_sort | Challa Venkateshwarlu |
| collection | DOAJ |
| description | In the rapid climate change scenario and subsequent rainfall patterns, drought has emerged as a bottleneck for crop production across crops, especially in rainfed rice. Drought significantly affects the development and production of most modern rice cultivars. Thus, recent breeding efforts have aimed to integrate drought tolerance traits in existing rice varieties through conventional and molecular approaches. The identification of grain yields quantitative trait loci (QTLs) under drought conditions, an important trait with high selection efficiency, may lead to the development of drought-tolerant rice varieties. The study reported the grain yield QTLs identified under the reproductive stage of drought stress in the F2-derived mapping population from Kasturi (drought-sensitive) × Chao Khaw (drought-tolerant). Thirteen QTLs (qDTYs) were identified based on two years of field data. Comparative analysis revealed two robust and consistent DTY QTLs, qDTY1.1 and qDTY8.1, which explained the PVEs of 11.61% to 12.88% and 15.79% to 18.77%, respectively. However, qDTY1.1 was found at the nearest position to the previously identified qDTYs. Through candidate gene analysis, the identified QTL regions in chromosome 1 (qDTY1.1) and chromosome 8 (qDTY8.1) revealed seven and five candidate genes, respectively, based on gene ontology that were significantly associated with rice grain yield-related drought traits. In conclusion, this study identified key consistent drought yield QTLs in a drought-tolerant exotic landrace. The identified QTLs provide valuable insights and resources for ongoing efforts to develop drought-tolerant rice varieties. They can be further utilized in drought breeding programs to enhance the drought resilience of existing varieties or to develop new varieties. |
| format | Article |
| id | doaj-art-37815cc6b8054d118fd00bd688e1f06d |
| institution | Kabale University |
| issn | 1664-462X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj-art-37815cc6b8054d118fd00bd688e1f06d2025-01-07T06:40:58ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-01-011510.3389/fpls.2024.14952411495241Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived populationChalla Venkateshwarlu0Challa Venkateshwarlu1Paresh Chandra Kole2Arun Kumar Singh3Pronob J. Paul4Pallavi Sinha5Vikas Kumar Singh6Arvind Kumar7South Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaInstitute of Agriculture, Visva Bharati University, Bolpur, West Bengal, IndiaInstitute of Agriculture, Visva Bharati University, Bolpur, West Bengal, IndiaSouth Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaSouth Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaSouth Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaSouth Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaSouth Asia Hub, International Rice Research Institute (IRRI), International Crops Institute for the Semi-Arid Tropics (ICRISAT) Campus, Hyderabad, Telangana, IndiaIn the rapid climate change scenario and subsequent rainfall patterns, drought has emerged as a bottleneck for crop production across crops, especially in rainfed rice. Drought significantly affects the development and production of most modern rice cultivars. Thus, recent breeding efforts have aimed to integrate drought tolerance traits in existing rice varieties through conventional and molecular approaches. The identification of grain yields quantitative trait loci (QTLs) under drought conditions, an important trait with high selection efficiency, may lead to the development of drought-tolerant rice varieties. The study reported the grain yield QTLs identified under the reproductive stage of drought stress in the F2-derived mapping population from Kasturi (drought-sensitive) × Chao Khaw (drought-tolerant). Thirteen QTLs (qDTYs) were identified based on two years of field data. Comparative analysis revealed two robust and consistent DTY QTLs, qDTY1.1 and qDTY8.1, which explained the PVEs of 11.61% to 12.88% and 15.79% to 18.77%, respectively. However, qDTY1.1 was found at the nearest position to the previously identified qDTYs. Through candidate gene analysis, the identified QTL regions in chromosome 1 (qDTY1.1) and chromosome 8 (qDTY8.1) revealed seven and five candidate genes, respectively, based on gene ontology that were significantly associated with rice grain yield-related drought traits. In conclusion, this study identified key consistent drought yield QTLs in a drought-tolerant exotic landrace. The identified QTLs provide valuable insights and resources for ongoing efforts to develop drought-tolerant rice varieties. They can be further utilized in drought breeding programs to enhance the drought resilience of existing varieties or to develop new varieties.https://www.frontiersin.org/articles/10.3389/fpls.2024.1495241/fullreproductive stage droughtQTL mappinglinkagegrain yieldrice |
| spellingShingle | Challa Venkateshwarlu Challa Venkateshwarlu Paresh Chandra Kole Arun Kumar Singh Pronob J. Paul Pallavi Sinha Vikas Kumar Singh Arvind Kumar Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population Frontiers in Plant Science reproductive stage drought QTL mapping linkage grain yield rice |
| title | Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population |
| title_full | Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population |
| title_fullStr | Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population |
| title_full_unstemmed | Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population |
| title_short | Mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace-derived population |
| title_sort | mapping genomic regions for reproductive stage drought tolerance in rice from exotic landrace derived population |
| topic | reproductive stage drought QTL mapping linkage grain yield rice |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2024.1495241/full |
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