Small interfering RNAs that trigger posttranscriptional gene silencing are not required for the histone H3 Lys9 methylation necessary for transgenic tandem repeat stabilization in Neurospora crassa.

Abstract excerpt

In Neurospora crassa, the introduction of a transgene can lead to small interfering RNA (siRNA)-mediated posttranscriptional gene silencing (PTGS) of homologous genes. siRNAs can also guide locus-specific methylation of Lys9 of histone H3 (Lys9H3) in Schizosaccharomyces pombe. Here we tested the hypothesis that transgenically derived siRNAs may contemporaneously both activate the PTGS mechanism and induce...

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