Maternal RNA-directed DNA methylation is required for seed development in Brassica rapa

Jeffrey W. Grover, Timmy Kendall, Abdul Baten, Graham J. King, Rebecca A. Mosher

Research output: Contribution to journalArticlepeer-review

Abstract

Some organisms deploy small RNAs from accessory cells to maintain genome integrity in the zygote, a mechanism that has been proposed but not demonstrated in plants. Here we show that maternal mutations in the Pol IV-dependent small RNA pathway cause abortion of developing seeds in Brassica rapa. Surprisingly, small RNA production is required in maternal somatic tissues, but not in maternal gametes or the developing zygote. We propose that parental influence over zygotic genomes is a common strategy in eukaryotes and that outbreeding species such as B. rapa are key to understanding the role of small RNAs during reproduction.

Original languageEnglish (US)
JournalUnknown Journal
DOIs
StatePublished - Aug 10 2017

Keywords

  • Polymerase IV
  • Polymerase V
  • RNA-directed DNA Methylation
  • Seed development
  • SiRNA

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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