The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation

Abstract C‐to‐U RNA editing is the conversion from cytidine to uridine at RNA level. In plants, the genes undergo C‐to‐U RNA modification are mainly chloroplast and mitochondrial genes. Case studies have identified the roles of C‐to‐U editing in various biological processes, but the functional conse...

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Main Authors: Duan Chu, Lai Wei
Format: Article
Language:English
Published: Wiley 2019-09-01
Series:Plant Direct
Subjects:
Online Access:https://doi.org/10.1002/pld3.169
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author Duan Chu
Lai Wei
author_facet Duan Chu
Lai Wei
author_sort Duan Chu
collection DOAJ
description Abstract C‐to‐U RNA editing is the conversion from cytidine to uridine at RNA level. In plants, the genes undergo C‐to‐U RNA modification are mainly chloroplast and mitochondrial genes. Case studies have identified the roles of C‐to‐U editing in various biological processes, but the functional consequence of the majority of C‐to‐U editing events is still undiscovered. We retrieved the deep sequenced transcriptome data in roots and shoots of Arabidopsis thaliana and profiled their C‐to‐U RNA editomes and gene expression patterns. We investigated the editing level and conservation pattern of these C‐to‐U editing sites. The levels of nonsynonymous C‐to‐U editing events are higher than levels of synonymous events. The fraction of nonsynonymous editing sites is higher than neutral expectation. Highly edited cytidines are more conserved at DNA level, and the gene expression levels are correlated with C‐to‐U editing levels. Our results demonstrate that the global C‐to‐U editome is shaped by natural selection and that many nonsynonymous C‐to‐U editing events are adaptive. The editing mechanism might be positively selected and maintained and could have profound effects on the modified RNAs.
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spelling doaj.art-148e7adfdbeb4c1a8ed2fe2d3a09a4e82022-12-21T22:11:35ZengWileyPlant Direct2475-44552019-09-0139n/an/a10.1002/pld3.169The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptationDuan Chu0Lai Wei1College of Life Sciences Beijing Normal University Beijing ChinaCollege of Life Sciences Beijing Normal University Beijing ChinaAbstract C‐to‐U RNA editing is the conversion from cytidine to uridine at RNA level. In plants, the genes undergo C‐to‐U RNA modification are mainly chloroplast and mitochondrial genes. Case studies have identified the roles of C‐to‐U editing in various biological processes, but the functional consequence of the majority of C‐to‐U editing events is still undiscovered. We retrieved the deep sequenced transcriptome data in roots and shoots of Arabidopsis thaliana and profiled their C‐to‐U RNA editomes and gene expression patterns. We investigated the editing level and conservation pattern of these C‐to‐U editing sites. The levels of nonsynonymous C‐to‐U editing events are higher than levels of synonymous events. The fraction of nonsynonymous editing sites is higher than neutral expectation. Highly edited cytidines are more conserved at DNA level, and the gene expression levels are correlated with C‐to‐U editing levels. Our results demonstrate that the global C‐to‐U editome is shaped by natural selection and that many nonsynonymous C‐to‐U editing events are adaptive. The editing mechanism might be positively selected and maintained and could have profound effects on the modified RNAs.https://doi.org/10.1002/pld3.169adaptiveArabidopsis thalianaconservationC‐to‐U RNA editingexpressionpositive selection
spellingShingle Duan Chu
Lai Wei
The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
Plant Direct
adaptive
Arabidopsis thaliana
conservation
C‐to‐U RNA editing
expression
positive selection
title The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
title_full The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
title_fullStr The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
title_full_unstemmed The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
title_short The chloroplast and mitochondrial C‐to‐U RNA editing in Arabidopsis thaliana shows signals of adaptation
title_sort chloroplast and mitochondrial c to u rna editing in arabidopsis thaliana shows signals of adaptation
topic adaptive
Arabidopsis thaliana
conservation
C‐to‐U RNA editing
expression
positive selection
url https://doi.org/10.1002/pld3.169
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AT duanchu chloroplastandmitochondrialctournaeditinginarabidopsisthalianashowssignalsofadaptation
AT laiwei chloroplastandmitochondrialctournaeditinginarabidopsisthalianashowssignalsofadaptation