Pot2, an inverted repeat transposon from the rice blast fungus Magnaporthe grisea

P. Kachroo, S. A. Leong, B. B. Chattoo

Research output: Contribution to journalArticlepeer-review

152 Scopus citations

Abstract

We report the cloning and characterisation of Pot2, a putative transposable element from Magnaporthe grisea. The element is 1857 by in size, has 43-bp perfect terminal inverted repeats (TIRs) and 16-bp direct repeats within the TIRs. A large open reading frame, potentially coding for a transposase-like protein, was identified. This putative protein coding region showed extensive identity to that of Fott, a transposable element from another phytopathogenic fungus, Fusarium oxysporum. Pot2, like the transposable elements Tc1 and Mariner of Caenorhabditis elegans and Drosophila, respectively, duplicates the dinucleotide TA at the target insertion site. Sequence analysis of DNA flanking 12 Pot2 elements revealed similarity to the consensus insertion sequence of Tct. Pot2 is present at a copy number of approximately 100 per haploid genome and represents one of the major repetitive DNAs shared by both rice and non-rice pathogens of M. grisea.

Original languageEnglish
Pages (from-to)339-348
Number of pages10
JournalMGG Molecular & General Genetics
Volume245
Issue number3
DOIs
StatePublished - May 1994

Keywords

  • Repetitive DNA Transposable element
  • Rice blast

ASJC Scopus subject areas

  • Genetics

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