The origin and evolution of fragrance in rice (Oryza sativa L.).
Fragrance in the grain is one of the most highly valued grain quality traits in rice, yet the origin and evolution of the betaine aldehyde dehydrogenase gene ( BADH2 ) underlying this trait remains unclear. In this study, we identify eight putatively nonfunctional alleles of the BADH2 gene and show...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
National Academy of Sciences
2009
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/166144 |
| _version_ | 1855527127956324352 |
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| author | Kovach, Michael J. Calingacion, Mariafe N. Fitzgerald, Melissa A. McCouch, Susan R. |
| author_browse | Calingacion, Mariafe N. Fitzgerald, Melissa A. Kovach, Michael J. McCouch, Susan R. |
| author_facet | Kovach, Michael J. Calingacion, Mariafe N. Fitzgerald, Melissa A. McCouch, Susan R. |
| author_sort | Kovach, Michael J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Fragrance in the grain is one of the most highly valued grain quality traits in rice, yet the origin and evolution of the betaine aldehyde dehydrogenase gene ( BADH2 ) underlying this trait remains unclear. In this study, we identify eight putatively nonfunctional alleles of the BADH2 gene and show that these alleles have distinct geographic and genetic origins. Despite multiple origins of the fragrance trait, a single allele, badh2.1 , is the predominant allele in virtually all fragrant rice varieties today, including the widely recognized Basmati and Jasmine types. Haplotype analysis allowed us to establish a single origin of the badh2.1 allele within the Japonica varietal group and demonstrate the introgression of this allele from Japonica to Indica . Basmati-like accessions were nearly identical to the ancestral Japonica haplotype across a 5.3-Mb region flanking BADH2 regardless of their fragrance phenotype, demonstrating a close evolutionary relationship between Basmati varieties and the Japonica gene pool. These results clarify the relationships among fragrant rice varieties and challenge the traditional assumption that the fragrance trait arose in the Indica varietal group. |
| format | Journal Article |
| id | CGSpace166144 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | National Academy of Sciences |
| publisherStr | National Academy of Sciences |
| record_format | dspace |
| spelling | CGSpace1661442024-12-22T05:44:55Z The origin and evolution of fragrance in rice (Oryza sativa L.). Kovach, Michael J. Calingacion, Mariafe N. Fitzgerald, Melissa A. McCouch, Susan R. alleles basmati rice cultivars evolution fragrance origin phenotypes Fragrance in the grain is one of the most highly valued grain quality traits in rice, yet the origin and evolution of the betaine aldehyde dehydrogenase gene ( BADH2 ) underlying this trait remains unclear. In this study, we identify eight putatively nonfunctional alleles of the BADH2 gene and show that these alleles have distinct geographic and genetic origins. Despite multiple origins of the fragrance trait, a single allele, badh2.1 , is the predominant allele in virtually all fragrant rice varieties today, including the widely recognized Basmati and Jasmine types. Haplotype analysis allowed us to establish a single origin of the badh2.1 allele within the Japonica varietal group and demonstrate the introgression of this allele from Japonica to Indica . Basmati-like accessions were nearly identical to the ancestral Japonica haplotype across a 5.3-Mb region flanking BADH2 regardless of their fragrance phenotype, demonstrating a close evolutionary relationship between Basmati varieties and the Japonica gene pool. These results clarify the relationships among fragrant rice varieties and challenge the traditional assumption that the fragrance trait arose in the Indica varietal group. 2009-08-25 2024-12-19T12:55:54Z 2024-12-19T12:55:54Z Journal Article https://hdl.handle.net/10568/166144 en National Academy of Sciences Kovach, Michael J.; Calingacion, Mariafe N.; Fitzgerald, Melissa A. and McCouch, Susan R. 2009. The origin and evolution of fragrance in rice (Oryza sativa L.). Proc. Natl. Acad. Sci. U.S.A., Volume 106 no. 34 p. 14444-14449 |
| spellingShingle | alleles basmati rice cultivars evolution fragrance origin phenotypes Kovach, Michael J. Calingacion, Mariafe N. Fitzgerald, Melissa A. McCouch, Susan R. The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title | The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title_full | The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title_fullStr | The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title_full_unstemmed | The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title_short | The origin and evolution of fragrance in rice (Oryza sativa L.). |
| title_sort | origin and evolution of fragrance in rice oryza sativa l |
| topic | alleles basmati rice cultivars evolution fragrance origin phenotypes |
| url | https://hdl.handle.net/10568/166144 |
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