Rice Retroposon p-SINE1 and Origin of Cultivated Rice

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概要

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• The wild rice species Oryza mfipogon displays wide intraspecific variations. It is considered to be the progenitor of the cultivated rice species Oryza sativa with two ecotypes, japonica and indica. p-SINEl is the first plant retroposon SINE identified in O. sativa and is present in strains of Oryza species with the AA genome in multiple copies. Some p-SINEl members show interspecific insertion polymorphism among the rice strains and are thus assumed to be suitable markers for classifying the strains and to infer their relationships based on the presence or absence of the members at the corresponding loci. Subfamily members of p-SINEl show insertion polymorphism in the O. sativa -O. rufipogon population. To determine the origin of cultivated rice, we used these p-SINEl members to bar-code each of 101 cultivated and wild rice strains based on the insertion polymorphism at the respective loci. A phylogenetic tree constructed using the bar codes given to all the rice strains showed that O. sativa strains could be divided into two groups corresponding to japonica and indica, whereas O. rufipogon strains were divided into four groups, of which, one group consisted of annual O. rufipogon strains, while the other three of the perennial O. rufipogon strains. Japonica strains were closely related to the O. rufipogon perennial strains of one group, and the indica strains to the O. rufipogon annual strains, indicating that O. sativa had been derived polyphyletically from O. rufipogon. Furthermore, we identified new p-SINEl members showing interspecific insertion polymorphism from representative strains of four wild rice species with the AA genome, O. barthii, O. glumaepatula, O. longistaminata and O. meridionalis. A phylogenetic tree constructed using the polymorphic p-SINEl members showed that O. longistaminata and O. meridionalis had diverged early, whereas the other species including O. rufipogon diverged relatively recently in an evolutionary time. We also presented the results of mapping of all p-SINEl members identified from databases of rice genome sequences, and showed that they were present in all the chromosomes, but not distributed in the regions near the centromere in each chromosome, unlike other retroelements.

• 日本育種学会の論文
• 2004-03-01

著者

• CHENG Chaoyang

  Institute of Molecular and Cellular Biosciences, the University of Tokyo

• TSUCHIMOTO Suguru

  Institute of Molecular and Cellular Biosciences, the University of Tokyo

• OHTSUBO Hisako

  Institute of Molecular and Cellular Biosciences, the University of Tokyo

• OHTSUBO Eiichi

  Institute of Molecular and Cellular Biosciences, the University of Tokyo

• Ohtsubo E

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• Ohtsubo Hisako

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• Ohtsubo Hisako

  Institute Of Applied Microbiology University Of Tokyo

• Ohtsubo Eiichi

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• Cheng Chaoyang

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• Ohsawa Isaku

  Institute of Molecular and Cellular Biosciences, the University of Tokyo

• Tsuchimoto Suguru

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• OHTSUBO Eiichi

  Institute of Applied Microbiology, University of Tokyo

関連論文

• Phylogenetic analysis of Oryza rufipogon strains and their relations to Oryza sativa strains by insertion polymorphism of rice SINEs
• Identification and characterization of Australian wild rice strains of Oryza meridionalis and Oryza rufipogon by SINE insertion polymorphism
• Two new SINE elements, p-SINE2 and p-SINE3, from rice
• New SINE families from rice, OsSN, with poly(A) at the 3' ends
• Rice Retroposon p-SINE1 and Origin of Cultivated Rice
• Isolation and Expression Analysis of Petunia CURLY LEAF-Like Genes
• Evolutionary relationships among rice species with AA genome based on SINE insertion analysis
• Identification and structural analysis of SINE elements in the Arabidopsis thaliana genome
• Identification and characterization of petunia genes homologous to Arabidopsis CURLY LEAF gene
• Tnr8, a foldback transposable element from rice
• Molecular mechanism of the petunia class B gene function
• Identification and phylogenetic analysis of gypsy-type retrotransposons in the plant kingdom
• RIRE2, a novel gypsy-type retrotransposon from rice
• Analysis of Petunia hybrida genes homologous to the Arabidopsis CURLY LEAF gene
• INTERACTIONS BETWEEN PETUNIA FLORAL HOMEOTIC GENES BLIND AND GREEN PETAL
• RIRE1, a retrotransposon from wild rice Oryza australiensis
• Identification and characterization of two tandem repeat sequences(TrsB and TrsC)and a retrotransposon(RIRE1)as genome-general sequences in rice
• イネ染色体における高頻度反復配列の構成〔英文〕
• 可動性遺伝因子のイントロンへの挿入によるイネWaxy遺伝子の多様化〔英文〕
• イネ染色体に存在する転移性因子の同定と,その挿入領域の多型性に基づくイネの系統関係の解析〔英文〕
• New transposable elements identified as insertions in rice transposon Tnr1
• イネ染色体に存在する散在型反復配列p-SINE1ファミリ-の解析〔英文〕
• Tn3とγδのキメラトランスポゼ-スを用いたトランスポゼ-スの逆向き繰り返し配列(IR)に対する結合特異性決定部位の解析〔英文〕

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