Differential excision patterns of the En-transposable element at the A2 locus in maize relate to the insertion site

Ru Ying Chang, Surinder Chopra, Peter A. Peterson

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Defined mutant alleles with resident transposons display characteristic patterns of germinal and somatic reversion, and heritable changes in the timing and frequency of reversions, which have been termed "change of state" by McClintock, constantly arise. Several mechanisms were proposed to account for these changes. They may be ascribed to the structure and composition of the elements themselves (composition hypothesis) or to their location (position hypothesis). In the current study, insertion positions were determined for three autonomous En-controlled mutable alleles of the A2 locus in maize that show different somatic reversion patterns. A relationship was observed between En insertion positions in the single coding region of the intronless A2 gene and anthocyanin variegation patterns in the aleurone. An insertion in the 5′ region of the coding sequence produced a very late somatic variegation pattern, whereas two early variegation patterns were caused by En insertions in the 3′ region of the coding sequence.

Original languageEnglish (US)
Pages (from-to)189-195
Number of pages7
JournalMolecular Genetics and Genomics
Volume274
Issue number2
DOIs
StatePublished - Sep 2005

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics

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