Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping
Aluminum (Al3+) toxicity is one of the factors limiting crop production in acidic soils. Identifying quantitative trait loci (QTLs)/genes for tolerance to Al3+ toxicity at seed germination can aid the development of new tolerant cultivars. The segregating population derived from Pak Basmati (Indica)...
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Springer Science+Business Media, LLC, part of Springer Nature
2021
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| author | Jahan, Nusrat Javed, Muhammad Arshad Khan, Anwar Abd. Manan, Fazilah Tabassum, Bushra |
| author_facet | Jahan, Nusrat Javed, Muhammad Arshad Khan, Anwar Abd. Manan, Fazilah Tabassum, Bushra |
| author_sort | Jahan, Nusrat |
| collection | ePrints |
| description | Aluminum (Al3+) toxicity is one of the factors limiting crop production in acidic soils. Identifying quantitative trait loci (QTLs)/genes for tolerance to Al3+ toxicity at seed germination can aid the development of new tolerant cultivars. The segregating population derived from Pak Basmati (Indica) × Pokkali (Indica) was used for mapping QTLs linked with tolerance to Al3+ toxicity ranging from 0 to 20 mM at pH 4 ± 0.2 at germination. The favorable alleles for all new QTLs were analyzed based on germination traits, i.e., final germination percentage (FG%), germination energy (GE), germination speed (GS), germination index (GI), mean germination time (MGT), germination value (GV), germination velocity (GVe), peak value of germination (GPV), and germination capacity (GC), and growth traits, such as root length (RL), shoot length (SL), total dry biomass (TDB) and germination vigor index (GVI). The phenotypic evolution showed transgressive variations. For genome-wide mapping, 90 polymorphic SSRs with 4 gene-specific markers and Win QTL Cart were used for QTL analysis. In all, 35 QTLs for germination and 11 QTLs for seedling growth were detected in distinct chromosomal regions by composite interval mapping (CIM), and multiple interval mapping (MIM) confirmed the pleiotropy at region RM128 on chromosome 1. Based on our genetic mapping studies, the genes/QTLs underlying tolerance to Al3+ toxicity could differ for both the germination and seedling stages in segregated populations. The QTLs identified in this study could be a source of new alleles for improving tolerance to Al3+ toxicity in rice. |
| first_indexed | 2024-03-05T21:09:27Z |
| format | Article |
| id | utm.eprints-96611 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T21:09:27Z |
| publishDate | 2021 |
| publisher | Springer Science+Business Media, LLC, part of Springer Nature |
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| spelling | utm.eprints-966112022-07-31T08:01:03Z http://eprints.utm.my/96611/ Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping Jahan, Nusrat Javed, Muhammad Arshad Khan, Anwar Abd. Manan, Fazilah Tabassum, Bushra Q Science (General) Aluminum (Al3+) toxicity is one of the factors limiting crop production in acidic soils. Identifying quantitative trait loci (QTLs)/genes for tolerance to Al3+ toxicity at seed germination can aid the development of new tolerant cultivars. The segregating population derived from Pak Basmati (Indica) × Pokkali (Indica) was used for mapping QTLs linked with tolerance to Al3+ toxicity ranging from 0 to 20 mM at pH 4 ± 0.2 at germination. The favorable alleles for all new QTLs were analyzed based on germination traits, i.e., final germination percentage (FG%), germination energy (GE), germination speed (GS), germination index (GI), mean germination time (MGT), germination value (GV), germination velocity (GVe), peak value of germination (GPV), and germination capacity (GC), and growth traits, such as root length (RL), shoot length (SL), total dry biomass (TDB) and germination vigor index (GVI). The phenotypic evolution showed transgressive variations. For genome-wide mapping, 90 polymorphic SSRs with 4 gene-specific markers and Win QTL Cart were used for QTL analysis. In all, 35 QTLs for germination and 11 QTLs for seedling growth were detected in distinct chromosomal regions by composite interval mapping (CIM), and multiple interval mapping (MIM) confirmed the pleiotropy at region RM128 on chromosome 1. Based on our genetic mapping studies, the genes/QTLs underlying tolerance to Al3+ toxicity could differ for both the germination and seedling stages in segregated populations. The QTLs identified in this study could be a source of new alleles for improving tolerance to Al3+ toxicity in rice. Springer Science+Business Media, LLC, part of Springer Nature 2021 Article PeerReviewed Jahan, Nusrat and Javed, Muhammad Arshad and Khan, Anwar and Abd. Manan, Fazilah and Tabassum, Bushra (2021) Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping. Ecotoxicology, 30 (5). pp. 794-805. ISSN 0963-9292 http://dx.doi.org/10.1007/s10646-021-02413-6 DOI:10.1007/s10646-021-02413-6 |
| spellingShingle | Q Science (General) Jahan, Nusrat Javed, Muhammad Arshad Khan, Anwar Abd. Manan, Fazilah Tabassum, Bushra Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title | Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title_full | Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title_fullStr | Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title_full_unstemmed | Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title_short | Genetic architecture of Al3+ toxicity tolerance in rice F2:3 populations determined through QTL mapping |
| title_sort | genetic architecture of al3 toxicity tolerance in rice f2 3 populations determined through qtl mapping |
| topic | Q Science (General) |
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