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Molecular basis on the regulation of methylation that controls transposition of the plant transposons

Research Project

Project/Area Number 13660001
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Breeding science
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

KISHIMA Yuji  Hokkaido Univ., Grad. School of Agr., Asso. Prof., 大学院・農学研究科, 助教授 (60192556)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsAntirrhinum majus / transposon / Tam3 / low temperature stress / DNA methylation / gel shift assay / 5-aza-cytidine / トランスポゾンTam3 / 低温依存性転移 / DNAのメチル化 / 重亜硫酸ナトリウム処理実験 / タンパク質のDNA結合実験 / 転移酵素タンパク質
Research Abstract

The transposition frequency of Tam3 in Antirrhinum, unlike that of most other cut-and-paste type transposons, is tightly controlled by temperature : Tam3 transposes rarely at 25℃, but much more frequently at 15℃. Here we studied the mechanism of the low-temperature-dependent transposition (LTDT) of Tam3. Our results strongly suggest that LTDT is not likely to be due to either transcriptional regulation or posttranscriptional regulation of the Tam3 Tpase gene. We found that temperature shift induced a remarkable change of the methylation state unique to Tam3 sequences in the genome : higher temperature resulted in hypermethylation, while lower temperature resulted in reduced methylation. The methylation state was reversible within a single generation in response to a temperature shift. Although our data demonstrate a close link between LTDT and the methylation of Tam3, they also suggest that secondary factor(s) other than DNA methylation is involved in repression of Tam3 transposition.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Hashida Hinnosuke: "Temperature shift coordinately changes the activity and the methylation state of Transposon Tam3 in Antirrhinum"Plant Physiology. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takagi Kyoko: "MITE-transposon display efficiently detects polymorphisms among the Oryza AA-aenome species"Breeding Science. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nagano Hironori: "Characterization of the repetitive sequences in a 200-kb region around the rice waxy locus, diversity of transposable elements and presence of veiled repetitive sequences"Genes & Genetic Systems. 77(2). 69-79 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 貴島祐治: "植物トランスポゾンの転移機構に関する分子育種学的研究"育種学研究. 3(3). 169-175 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kitamura Ken: "Position effect of the excision frequency of the Antirrhinum transposon Tam3 : implications for the degree of position-dependent methylation in the ends of the element"Plant Molecular Biology. 47. 475-490 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Hashida, K. Kitamura, T. Mikami, Y. Kishima: "Temperature shift coordinately changes the activity and the methylation state of transposon Tam3 in Antirrhiunm"Plant Physiology. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Takagi, H. Nagano, Y. Kishima, Y. Sano: "MITE-transposon display efficiently detects polymorphisms among the Oryza AA-genome species"Breeding Science. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H. Nagano, M. Kunii, T. Azuma, Y. Kishima, Y. Sano: "Characterization of the repetitive sequences in a 200-kb region around the rice waxy locus : diversity of transposable elements and presence of veiled repetitive sequences"Genes & Genetic Systems. 77. 69-79 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y. Kishima: "Study on transpositional regulation of the plant transposons"Breeding Research. 3(3). 169-175 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Kitamura, S. Hashida, T. Mikami, Y. Kishima: "Position effect of the excision frequency of the Antirrhimun transposon Tam3 : implications for the degree of position-dependent methylation in the ends of the element"Plant Molecular Biology. 47. 475-490 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hashida Shinnosuke: "Temperature shift coordinately change the activity and the methylation state of Transposon Tam3 in Antirrhinum"Plant Physiology. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takagi Kyoko: "MITE-transposon display efficiently detects polymorphisms among the Oryza AA-aenome species"Breeding Science. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Nagano Hironori: "Characterization of the repetitive sequences in a 200-kb region around the Rice waxy locus, diversitv of transposable elements and presence of veied repetitive seauences"Genes & Genetic Systems. 77(2). 69-79 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ken Kitamura: "Position effect of the excision frequency of the Antirrhimun transposon Tam3 : implications for the degree of position-dependent methylation in the ends of the element"Plant Molecular Biology. 47. 475-490 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 貴島 祐治: "植物トランスポゾンの転移機構に関する分子育種学的研究"育種学研究. 3・3. 169-175 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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