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M6A safeguards transcriptome integrity by restricting RNA chimera formation at rearranged loci in plants

ABSTRACT: m6A safeguards transcriptome integrity by restricting RNA chimera formation at rearranged loci in plants

PROVIDER: PRJNA510307 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	SRR8327680.fastq.gz	Fastqsanger.gz
	SRR8327681.fastq.gz	Fastqsanger.gz
	SRR8327676.fastq.gz	Fastqsanger.gz
	SRR8327677.fastq.gz	Fastqsanger.gz
	SRR8327678.fastq.gz	Fastqsanger.gz

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m6A safeguards transcriptome integrity by restricting RNA chimera formation at rearranged loci in plants

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The m6A pathway protects the transcriptome integrity by restricting RNA chimera formation in plants.

Project description:Global, segmental, and gene duplication-related processes are driving genome size and complexity in plants. Despite their evolutionary potentials, those processes can also have adverse effects on genome regulation, thus implying the existence of specialized corrective mechanisms. Here, we report that an N6-methyladenosine (m6A)-assisted polyadenylation (m-ASP) pathway ensures transcriptome integrity in Arabidopsis thaliana Efficient m-ASP pathway activity requires the m6A methyltransferase-associated factor FIP37 and CPSF30L, an m6A reader corresponding to an YT512-B Homology Domain-containing protein (YTHDC)-type domain containing isoform of the 30-kD subunit of cleavage and polyadenylation specificity factor. Targets of the m-ASP pathway are enriched in recently rearranged gene pairs, displayed an atypical chromatin signature, and showed transcriptional readthrough and mRNA chimera formation in FIP37- and CPSF30L-deficient plants. Furthermore, we showed that the m-ASP pathway can also restrict the formation of chimeric gene/transposable-element transcript, suggesting a possible implication of this pathway in the control of transposable elements at specific locus. Taken together, our results point to selective recognition of 3'-UTR m6A as a safeguard mechanism ensuring transcriptome integrity at rearranged genomic loci in plants.

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RNA quality control by CCR4 safeguards chromatin integrity and centromere function in Arabidopsis [EM-seq]

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