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Title: ChloroSeq, an optimized chloroplast RNA-Seq bioinformatic pipeline, reveals remodeling of the organellar transcriptome under heat stress

Journal Article · · G3

Although RNA-Seq has revolutionized transcript analysis, organellar transcriptomes are rarely assessed even when present in published datasets. Here, we describe the development and application of a rapid and convenient method, ChloroSeq, to delineate qualitative and quantitative features of chloroplast RNA metabolism from strand-specific RNA-Seq datasets, including processing, editing, splicing, and relative transcript abundance. The use of a single experiment to analyze systematically chloroplast transcript maturation and abundance is of particular interest due to frequent pleiotropic effects observed in mutants that affect chloroplast gene expression and/or photosynthesis. To illustrate its utility, ChloroSeq was applied to published RNA-Seq datasets derived from Arabidopsis thaliana grown under control and abiotic stress conditions, where the organellar transcriptome had not been examined. The most appreciable effects were found for heat stress, which induces a global reduction in splicing and editing efficiency, and leads to increased abundance of chloroplast transcripts, including genic, intergenic, and antisense transcripts. Moreover, by concomitantly analyzing nuclear transcripts that encode chloroplast gene expression regulators from the same libraries, we demonstrate the possibility of achieving a holistic understanding of the nucleus-organelle system. ChloroSeq thus represents a unique method for streamlining RNA-Seq data interpretation of the chloroplast transcriptome and its regulators.

Research Organization:
Boyce Thompson Inst., Ithaca, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-90ER20015; FG02-10ER20015
OSTI ID:
1361698
Alternate ID(s):
OSTI ID: 1393425
Journal Information:
G3, Vol. 6, Issue 9; ISSN 2160-1836
Publisher:
Genetics Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 42 works
Citation information provided by
Web of Science

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Cited By (18)

CaHSL1 Acts as a Positive Regulator of Pepper Thermotolerance Under High Humidity and Is Transcriptionally Modulated by CaWRKY40 journal December 2018
The Roles of Mutation, Selection, and Expression in Determining Relative Rates of Evolution in Mitochondrial versus Nuclear Genomes journal August 2016
Transcription is a major driving force for plastid genome instability in Arabidopsis journal April 2019
Variation in plastid genomes in the gynodioecious species Silene vulgaris journal December 2019
Complete chloroplast genome sequence of Betula platyphylla: gene organization, RNA editing, and comparative and phylogenetic analyses journal December 2018
ORRM5, an RNA recognition motif-containing protein, has a unique effect on mitochondrial RNA editing journal May 2017
Multifarious Evolutionary Pathways of a Nuclear RNA Editing Factor: Disjunctions in Coevolution of DOT4 and Its Chloroplast Target rpoC1eU488SL journal February 2019
MORF9 Functions in Plastid RNA Editing with Tissue Specificity journal September 2019
Systematic sequencing of chloroplast transcript termini from Arabidopsis thaliana reveals >200 transcription initiation sites and the extensive imprints of RNA-binding proteins and secondary structures journal November 2019
Variation in plastid genomes in the gynodioecious species Silene vulgaris journal December 2019
Systematic sequencing of chloroplast transcript termini from Arabidopsis thaliana reveals >200 transcription initiation sites and the extensive imprints of RNA-binding proteins and secondary structures journal September 2019
Variation in plastid genomes in the gynodioecious species Silene vulgaris journal December 2019
Complete mitochondrial genomes from transcriptomes: assessing pros and cons of data mining for assembling new mitogenomes journal October 2019
Two interacting PPR proteins are major Arabidopsis editing factors in plastid and mitochondria journal July 2017
Unraveling chloroplast transcriptomes with ChloroSeq, an organelle RNA-Seq bioinformatics pipeline journal September 2016
Chloroplast cold-resistance is mediated by the acidic domain of the RNA binding protein CP31A journal December 2019
Pervasive, Genome-Wide Transcription in the Organelle Genomes of Diverse Plastid-Bearing Protists journal September 2017
Sequencing the Plastid Genome of Giant Ragweed (Ambrosia trifida, Asteraceae) From a Herbarium Specimen journal February 2019

Figures / Tables (8)