RRC ID 19241
Author Asano K, Yamasaki M, Takuno S, Miura K, Katagiri S, Ito T, Doi K, Wu J, Ebana K, Matsumoto T, Innan H, Kitano H, Ashikari M, Matsuoka M.
Title Artificial selection for a green revolution gene during japonica rice domestication.
Journal Proc. Natl. Acad. Sci. U.S.A.
Abstract The semidwarf phenotype has been extensively selected during modern crop breeding as an agronomically important trait. Introduction of the semidwarf gene, semi-dwarf1 (sd1), which encodes a gibberellin biosynthesis enzyme, made significant contributions to the "green revolution" in rice (Oryza sativa L.). Here we report that SD1 was involved not only in modern breeding including the green revolution, but also in early steps of rice domestication. We identified two SNPs in O. sativa subspecies (ssp.) japonica SD1 as functional nucleotide polymorphisms (FNPs) responsible for shorter culm length and low gibberellin biosynthetic activity. Genetic diversity analysis among O. sativa ssp. japonica and indica, along with their wild ancestor O. rufipogon Griff, revealed that these FNPs clearly differentiate the japonica landrace and O. rufipogon. We also found a dramatic reduction in nucleotide diversity around SD1 only in the japonica landrace, not in the indica landrace or O. rufipogon. These findings indicate that SD1 has been subjected to artificial selection in rice evolution and that the FNPs participated in japonica domestication, suggesting that ancient humans already used the green revolution gene.
Volume 108(27)
Pages 11034-9
Published 2011-7-5
DOI 10.1073/pnas.1019490108
PII 1019490108
PMID 21646530
PMC PMC3131315
MeSH Alleles Amino Acid Sequence Breeding Crops, Agricultural / classification Crops, Agricultural / genetics Genes, Plant Genetic Speciation Genetic Variation Molecular Sequence Data Oryza / classification Oryza / genetics* Phenotype Phylogeny Plant Proteins / genetics Quantitative Trait Loci Selection, Genetic Sequence Homology, Amino Acid
IF 9.661
Times Cited 54
Rice W0106 W0107 W0108 W0137 W0574 W0593 W0610 W0630 W1294 W1551 W1666 W1669 W1681 W1685 W1715 W1852 W1865 W1943 W1944 W1945 W1954 W1958 W1981 W2003 W2014 W2263 W2264 W2265 W2266