Molecular and General Genetics MGG

, Volume 261, Issue 3, pp 447–451

Capture of a genomic HMG domain sequence by the En/Spm-related transposable element Tpn1 in the Japanese morning glory

  • S. Takahashi
  • Y. Inagaki
  • H. Satoh
  • A. Hoshino
  • S. Iida
ORIGINAL PAPER

Abstract

The non-autonomous transposable element Tpn1 from the Japanese morning glory is an En/Spm-related DNA element found in the second intron of the DFR-B gene for flower pigmentation in the mutable line flecked, which shows variegation for flower color. It carries a genomic DNA segment containing at least four exon sequences encoding part of a HMG-box sequence. Spliced hybrid transcripts containing the DFR-B exon(s) and the HMG exons in Tpn1 were detected in the flower buds of the flecked line, and they were polyadenylated within Tpn1. Thus, Tpn1 can be regarded as a specialized transducing transposon carrying a part of the genomic sequence for a HMG box. The possible implications of the finding for evolution are discussed.

Key words Alternative splicing Gene capture HMG box Japanese morning glory Specialized transducing transposon 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • S. Takahashi
    • 1
  • Y. Inagaki
    • 1
  • H. Satoh
    • 1
  • A. Hoshino
    • 2
  • S. Iida
    • 1
  1. 1.Department of Biological Sciences and Technology Science University of Tokyo Yamazaki, Noda-shi, Chiba 278-8510, JapanJP
  2. 2.National Institute for Basic Biology Myodaiji, Okazaki-shi, Aichi 444-8585, Japan e-mail: shigiida@nibb.ac.jp Fax: +81-564-557685JP

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