| RRC ID |
47288
|
| 著者 |
Win KT, Yamagata Y, Doi K, Uyama K, Nagai Y, Toda Y, Kani T, Ashikari M, Yasui H, Yoshimura A.
|
| タイトル |
A single base change explains the independent origin of and selection for the nonshattering gene in African rice domestication.
|
| ジャーナル |
New Phytol
|
| Abstract |
Reduced seed shattering was a critical evolutionary step in crop domestication. Two cultivated rice species, Oryza sativa and Oryza glaberrima, were independently domesticated from the wild species Oryza rufipogon in Asia and Oryza barthii in Africa, respectively. A single nucleotide polymorphism (SNP) in the c gene, which encodes a trihelix transcription factor, causes nonshattering in O. sativa. However, the genetic mechanism of nonshattering in O. glaberrima is poorly understood. We conducted an association analysis for the coding sequences of SH3/SH4 in AA- genome rice species and the mutation suggested to cause nonshattering was demonstrated to do so using a positional-cloning approach in the O. sativa genetic background. We found that the loss of seed shattering in O. glaberrima was caused by an SNP resulting in a truncated SH3/SH4 protein. This mutation appears to be endemic and to have spread in the African gene pool by hybridization with some O. barthii accessions. We showed that interaction between the O. sativa and O. glaberrima domestication alleles of SH3 in heterozygotes induces a 'throwback' seed-shattering phenotype similar to that in the wild species. Identification of the causative SNP provides new insights into the molecular basis of seed shattering in crops and may facilitate investigation of the history of African rice domestication.
|
| 巻・号 |
213(4)
|
| ページ |
1925-1935
|
| 公開日 |
2017-3-1
|
| DOI |
10.1111/nph.14290
|
| PMID |
27861933
|
| MeSH |
Africa
Alleles
Base Sequence
Domestication*
Genes, Plant*
Genetic Linkage
Oryza / genetics*
Phenotype
Plant Proteins / genetics
Plant Proteins / metabolism
Polymorphism, Restriction Fragment Length
Polymorphism, Single Nucleotide / genetics*
Selection, Genetic*
|
| IF |
8.512
|
| 引用数 |
9
|
|
WOS 分野
|
PLANT SCIENCES
|
| リソース情報 |
| イネ |
CSSL |
