Two new SINE elements, p-SINE2 and p-SINE3, from rice

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概要

• 論文の詳細を見る

• p-SINE1 was the first plant SINE element identified in the Waxy gene in Oryza sativa, and since then a large number of p-SINE1-family members have been identified from rice species with the AA or non-AA genome. In this paper, we report two new rice SINE elements, designated p-SINE2 and p-SINE3, which form distinct families from that of p-SINE1. Each of the two new elements is significantly homologous to p-SINE1 in their 5’-end regions with that of the polymerase III promoter (A box and B box), but not significantly homologous in the 3’-end regions, although they all have a T-rich tail at the 3’ terminus. Despite the three elements sharing minimal homology in their 3’-end regions, the deduced RNA secondary structures of p-SINE1, p-SINE2 and p-SINE3 were found to be similar to one another, such that a stem-loop structure seen in the 3’-end region of each element is well conserved, suggesting that the structure has an important role on the p-SINE retroposition. These findings suggest that the three p-SINE elements originated from a common ancestor. Similar to members of the p-SINE1 family, the members of p-SINE2 or p-SINE3 are almost randomly dispersed in each of the 12 rice chromosomes, but appear to be preferentially inserted into gene-rich regions. The p-SINE2 members were present at respective loci not only in the strains of the species with the AA genome in the O. sativa complex, but also in those of other species with the BB, CC, DD, or EE genome in the O. officinalis complex. The p-SINE3 members were, however, only present in strains of species in the O. sativa complex. These findings suggest that p-SINE2 originated in an ancestral species with the AA, BB, CC, DD and EE genomes, like p-SINE1, whereas p-SINE3 originated in an ancestral strain of the species with the AA genome. The nucleotide sequences of p-SINE1 members are more divergent than those of p-SINE2 or p-SINE3, indicating that p-SINE1 is likely to be older than p-SINE2 and p-SINE3. This suggests that p-SINE2 and p-SINE3 have been derived from p-SINE1.

• 日本遺伝学会の論文

著者

• Xu Jian-hong

  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

• Osawa Isaku

  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

• Tsuchimoto Suguru

  Institute Of Molecular And Cellular Biosciences The University Of Tokyo

• Xu Jian-Hong

  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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