| RRC ID |
36349
|
| 著者 |
Iehisa JC, Matsuura T, Mori IC, Yokota H, Kobayashi F, Takumi S.
|
| タイトル |
Identification of quantitative trait loci for abscisic acid responsiveness in the D-genome of hexaploid wheat.
|
| ジャーナル |
J Plant Physiol
|
| Abstract |
In crop species such as wheat, abiotic stresses and preharvest sprouting reduce grain yield and quality. The plant hormone abscisic acid (ABA) plays important roles in abiotic stress tolerance and seed dormancy. In previous studies, we evaluated ABA responsiveness of 67 Aegilops tauschii accessions and their synthetic hexaploid wheat lines, finding wide variation that was due to the D-genome. In this study, quantitative trait locus (QTL) analysis was performed using an F2 population derived from crosses of highly ABA-responsive and less-responsive synthetic wheat lines. A significant QTL was detected on chromosome 6D, in a similar location to that reported for ABA responsiveness using recombinant inbred lines derived from common wheat cultivars Mironovskaya 808 and Chinese Spring. A comparative map and physiological and expression analyses of the 6D QTL suggested that this locus involved in line differences among wheat synthetics is different from that involved in cultivar differences in common wheat. The common wheat 6D QTL was found to affect seed dormancy and the regulation of cold-responsive/late embryogenesis abundant genes during dehydration. However, in synthetic wheat, we failed to detect any association of ABA responsiveness with abiotic stress tolerance or seed dormancy, at least under our experimental conditions. Development of near-isogenic lines will be important for functional analyses of the synthetic wheat 6D QTL.
|
| 巻・号 |
171(10)
|
| ページ |
830-41
|
| 公開日 |
2014-6-15
|
| DOI |
10.1016/j.jplph.2014.02.003
|
| PII |
S0176-1617(14)00039-X
|
| PMID |
24877675
|
| MeSH |
Abscisic Acid / metabolism*
Cell Cycle
Chromosome Mapping
Chromosomes, Plant / genetics*
Dehydration
Edible Grain / genetics
Edible Grain / growth & development
Edible Grain / physiology
Genome, Plant / genetics*
Germination
Plant Dormancy / genetics
Plant Growth Regulators / metabolism*
Plant Proteins / genetics
Plant Proteins / metabolism
Polyploidy
Quantitative Trait Loci / genetics*
Salt Tolerance
Seedlings / genetics
Seedlings / growth & development
Seedlings / physiology
Stress, Physiological
Triticum / genetics*
Triticum / growth & development
Triticum / physiology
|
| IF |
3.013
|
| 引用数 |
6
|
|
WOS 分野
|
PLANT SCIENCES
|
| リソース情報 |
| コムギ |
LPGKU2272(Langdon)
KU-2159 |
