Battles and hijacks: noncoding transcription in plants

ARIEL, FD; ROMERO-BARRIOS, N; JEGU, T; BENHAMED, M; CRESPI, M

TRENDS IN PLANT SCIENCE.

ELSEVIER SCIENCE LONDON

Lugar: Londres; Año: 2015

1360-1385

Noncoding RNAs have emerged as major components of the eukaryotic transcriptome.Genome-wide analyses revealed the existence of thousands of long noncoding RNAs(lncRNAs) in several plant species. Plant lncRNAs are transcribed by the plant-specificRNA polymerases Pol IV and Pol V, leading to transcriptional gene silencing, as wellas by Pol II. They are involved in a wide range of regulatory mechanisms impactinggene expression, including chromatin remodelling, modulation of alternative splicing,fine-tuning of miRNA activity or the control of mRNA translation or accumulation.Recently, dual noncoding transcription by alternative RNA polymerases was implicatedin epigenetic and chromatin conformation dynamics. This review integrates the currentknowledge on the regulatory mechanisms acting through plant noncoding transcription.