Plant Molecular Biology

, Volume 26, Issue 2, pp 775–778 | Cite as

A conserved sequence in internal transcribed spacer 1 of plant nuclear rRNA genes

  • Jih-Shiou Liu
  • Christopher L. Schardl
Short Communication

Abstract

A highly conserved sequence was found in rRNA gene internal transcribed spacer 1 (ITS1) among flowering plant species. The sequence, GGCRY-(4 to 7 n)-GYGYCAAGGAA (where Y=C or T; R=G or A) is located in the central region of ITS1, and is present in published sequences from a wide range of flowering plants. The rest of ITS1 is highly variable in sequence. Therefore, the conserved motif within ITS1 may have a key function in the processing of rRNA gene transcripts. Furthermore, identification of such a conserved motif will help facilitate alignment of sequences for phylogenetic analysis.

Key words

ribosomal RNA gene RNA processing secondary structure molecular phylogeny 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Jih-Shiou Liu
    • 1
  • Christopher L. Schardl
    • 1
  1. 1.Department of Plant PathologyUniversity of KentuckyLexingtonUSA

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