RRC ID |
3673
|
Author |
Kato H, Tezuka K, Feng YY, Kawamoto T, Takahashi H, Mori K, Akagi H.
|
Title |
Structural diversity and evolution of the Rf-1 locus in the genus Oryza.
|
Journal |
Heredity (Edinb)
|
Abstract |
The Rf-1 locus in rice is agriculturally important as it restores fertility in plants with BT-type cytoplasmic male sterility (CMS). The Rf-1 locus contains several duplicated copies of the gene responsible for restoration of fertility. We analyzed the genomic structure of the Rf-1 locus in the genus Oryza to clarify the structural diversity and evolution of the locus. We identified six genes (Rf-1A to Rf-1F) with homology to Rf-1 at this locus in Oryza species with an AA genome. The Rf-1 locus structures in the rice accessions examined were very complex and fell into at least six classification types. The nucleotide sequences of the duplicated genes and their flanking regions were highly conserved suggesting that the complex Rf-1 locus structures were produced by homologous recombination between the duplicated genes. The fact that complex Rf-1 locus structures were common to Oryza species that have evolved independently indicates that a duplication of the ancestral Rf-1 gene occurred early in rice evolution and that homologous recombination resulted in the diversification of Rf-1 locus structures. Additionally, the amino acid sequences of each duplicated gene were conserved between species. This suggests that the duplicated genes in the Rf-1 locus may have divergent functions and may act by controlling mitochondrial gene expression in rice as occurs in the restoration of CMS.
|
Volume |
99(5)
|
Pages |
516-24
|
Published |
2007-11-1
|
DOI |
10.1038/sj.hdy.6801026
|
PII |
6801026
|
PMID |
17622268
|
MeSH |
Evolution, Molecular*
Genes, Duplicate
Genes, Plant
Genetic Markers
Genetic Variation*
Genome, Plant
Oryza / classification
Oryza / genetics*
Polymerase Chain Reaction
Quantitative Trait Loci*
|
IF |
3.436
|
Times Cited |
23
|
WOS Category
|
ECOLOGY
GENETICS & HEREDITY
EVOLUTIONARY BIOLOGY
|
Resource |
Rice |
O. sativa(T0001
T0002
T0041
T0051
T0101
T0108
T0130
T0143
T0144
T0153
T0160
T0201
T0206
T0220
T0221
T0224
T0230
T0318
T0321
T0325
T0347
T0414
T0415
T0417
T0419
T0420
T0435
T0437
T0439
T0440
T0504
T0532
T0536
T0563
T0624
T0625
T0644
T0647
T0657
T0703
T0706
T0708
T0712
T0717
T0718
T0719
T0721
T0729
T0731
T0757
T0853
T0869
T0868)
O. rufipogon(W0120
W1294
W1866
W2003)
O. glaberrima(C0401
C0487
C0501
C0541
C0650
C0658)
O.barthii (W0652)
O. longistaminata(W1413
W1508)
O. glumaepatula(W1169
W2199)
O. meridionalis(W1625
W1635)
O. latifolia(W1197
W2200)
O. grandiglumis(W0613
W1194)
O. officinalis(W1361)
O. punctata(W514
W1924)
O. minuta(W1213
W1331)
O. brachyantha(W1401
W0656)
O. longiglumis(W1220)
O. alta(W0017)
O. alta or O. latifolia(W1182)
O. granulata(W0067)
O. mayeriana(W1356) |