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An RNA-dependent RNA polymerase is required for paramutation in maize

Author

Listed:
  • Mary Alleman

    (University of Arizona
    Duquesne University)

  • Lyudmila Sidorenko

    (University of Arizona)

  • Karen McGinnis

    (University of Arizona)

  • Vishwas Seshadri

    (University of Arizona
    Dr Reddy's Laboratories Ltd, Survey no. 47, R. R. District)

  • Jane E. Dorweiler

    (University of Arizona
    Marquette University)

  • Joshua White

    (University of Arizona
    Institute for Cellular and Molecular Biology, University of Texas at Austin, College of Natural Sciences)

  • Kristin Sikkink

    (University of Arizona)

  • Vicki L. Chandler

    (University of Arizona)

Abstract

How maize bends the rules Paramutation, first discovered in maize in the 1950s and since found in other plants, fungi, and even mice, is an inheritance pattern that breaks the rules. Most of the time Mendel's law holds sway, and gene pairs sort independently. Paramutation is an interaction in which one silent allele of a gene 'mutates' the actively expressed allele, so that it too is silenced. New work in maize now shows that paramutation is RNA-directed. Stability of the chromatin states associated with paramutation and transposon silencing requires the mop1 gene, which encodes an RNA-dependent RNA polymerase.

Suggested Citation

  • Mary Alleman & Lyudmila Sidorenko & Karen McGinnis & Vishwas Seshadri & Jane E. Dorweiler & Joshua White & Kristin Sikkink & Vicki L. Chandler, 2006. "An RNA-dependent RNA polymerase is required for paramutation in maize," Nature, Nature, vol. 442(7100), pages 295-298, July.
    • Handle: RePEc:nat:nature:v:442:y:2006:i:7100:d:10.1038_nature04884
    DOI: 10.1038/nature04884
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