| RRC ID |
6964
|
| Author |
Sugimoto K, Takeuchi Y, Ebana K, Miyao A, Hirochika H, Hara N, Ishiyama K, Kobayashi M, Ban Y, Hattori T, Yano M.
|
| Title |
Molecular cloning of Sdr4, a regulator involved in seed dormancy and domestication of rice.
|
| Journal |
Proc Natl Acad Sci U S A
|
| Abstract |
Seed dormancy provides a strategy for flowering plants to survive adverse natural conditions. It is also an important agronomic trait affecting grain yield, quality, and processing performance. We cloned a rice quantitative trait locus, Sdr4, which contributes substantially to differences in seed dormancy between japonica (Nipponbare) and indica (Kasalath) cultivars. Sdr4 expression is positively regulated by OsVP1, a global regulator of seed maturation, and in turn positively regulates potential regulators of seed dormancy and represses the expression of postgerminative genes, suggesting that Sdr4 acts as an intermediate regulator of dormancy in the seed maturation program. Japonica cultivars have only the Nipponbare allele (Sdr4-n), which endows reduced dormancy, whereas both the Kasalath allele (Srd4-k) and Sdr4-n are widely distributed in the indica group, indicating prevalent introgression. Srd4-k also is found in the wild ancestor Oryza rufipogon, whereas Sdr4-n appears to have been produced through at least two mutation events from the closest O. rufipogon allele among the accessions examined. These results are discussed with respect to possible selection of the allele during the domestication process.
|
| Volume |
107(13)
|
| Pages |
5792-7
|
| Published |
2010-3-30
|
| DOI |
10.1073/pnas.0911965107
|
| PII |
0911965107
|
| PMID |
20220098
|
| PMC |
PMC2851884
|
| MeSH |
Alleles
Base Sequence
Cloning, Molecular
Crops, Agricultural / genetics
Crops, Agricultural / growth & development
Crops, Agricultural / metabolism
Genes, Plant*
Genetic Complementation Test
INDEL Mutation
Molecular Sequence Data
Mutation
Oryza / genetics*
Oryza / growth & development*
Oryza / metabolism
Phylogeny
Plants, Genetically Modified
Polymorphism, Single Nucleotide
Quantitative Trait Loci
RNA, Messenger / genetics
RNA, Messenger / metabolism
RNA, Plant / genetics
RNA, Plant / metabolism
Seeds / genetics
Seeds / metabolism
|
| IF |
9.412
|
| Times Cited |
149
|
|
WOS Category
|
PLANT SCIENCES
|
| Resource |
| Rice |
W1685
W0610
W2264 |
