| RRC ID |
55690
|
| 著者 |
Pourkheirandish M, Kanamori H, Wu J, Sakuma S, Blattner FR, Komatsuda T.
|
| タイトル |
Elucidation of the origin of 'agriocrithon' based on domestication genes questions the hypothesis that Tibet is one of the centers of barley domestication.
|
| ジャーナル |
Plant J
|
| Abstract |
Wild barley forms a two-rowed spike with a brittle rachis whereas domesticated barley has two- or six-rowed spikes with a tough rachis. Like domesticated barley, 'agriocrithon' forms a six-rowed spike; however, the spike is brittle as in wild barley, which makes the origin of agriocrithon obscure. Haplotype analysis of the Six-rowed spike 1 (vrs1) and Non-brittle rachis 1 (btr1) and 2 (btr2) genes was conducted to infer the origin of agriocrithon barley. Some agriocrithon barley accessions (eu-agriocrithon) carried Btr1 and Btr2 haplotypes that are not found in any cultivars, implying that they are directly derived from wild barley through a mutation at the vrs1 locus. Other agriocrithon barley accessions (pseudo-agriocrithon) carried Btr1 or Btr2 from cultivated barley, thus implying that they originated from hybridization between six-rowed landraces carrying btr1Btr2 and Btr1btr2 genotypes followed by recombination to produce Btr1Btr2. All materials we collected from Tibet belong to pseudo-agriocrithon and thus do not support the Tibetan Plateau as being a center of barley domestication. Tracing the evolutionary history of these allelic variants revealed that eu-agriocrithon represents six-rowed barley lineages that were selected by early farmers, once in south-eastern Turkmenistan (vrs1.a1) and again in the eastern part of Uzbekistan (vrs1.a4).
|
| 巻・号 |
94(3)
|
| ページ |
525-534
|
| 公開日 |
2018-5-1
|
| DOI |
10.1111/tpj.13876
|
| PMID |
29469199
|
| MeSH |
Crop Production
Domestication*
Genes, Plant / genetics
Haplotypes / genetics
Hordeum / anatomy & histology
Hordeum / genetics*
Phylogeny
Tibet
Turkmenistan
Uzbekistan
|
| IF |
5.726
|
| 引用数 |
5
|
| リソース情報 |
| オオムギ |
Seed samples from SV (Standard Variety) accessions |
