Occurrence of RNA post-transcriptional modifications in plant viruses and viroids and their correlation with structural and functional features

Sammanfattning

Post-transcriptional modifications of RNA bases are widespread across all the tree of life and have been linked to RNA maturation, stability, and molecular interactions. RNA modifications have been extensively described in endogenous eukaryotic mRNAs, however, little is known about the presence of RNA modifications in plant viral and subviral RNAs. Here, we used a computational approach to infer RNA modifications in plant-pathogenic viruses and viroids using high-throughput annotation of modified ribonucleotides (HAMR), a software that predicts modified ribonucleotides using high-throughput RNA sequencing data. We analyzed datasets from representative members of different plant viruses and viroids and compared them to plant-endogenous mRNAs. Our approach was able to predict potential RNA chemical modifications (RCMs) in all analyzed pathogens. We found that both DNA and RNA viruses presented a wide range of RCM proportions while viroids had lowest values. Furthermore, we found that for viruses with segmented genomes, some genomic RNAs had a higher proportion of RCM. Interestingly, nuclear-replicating viroids showed most of the predicted modifications located in the pathogenesis region, pointing towards a possible functional role of RCMs in their infectious cycle. Thus, our results strongly suggest that plant viral and subviral RNAs might contain a variety of previously unreported RNA modifications, thus opening a new perspective in the multifaceted process of plant-pathogen interactions.

Nyckelord

RNA; Pathogens; Immune response; Defense; RNA modifications; Epitranscriptomics; Viruses; Viroids; m1A

Publicerad i

Virus Research
2023, Volym: 323, artikelnummer: 198958Utgivare: ELSEVIER

SLU författare

• Juárez González, Vasti Thamara

  • Institutionen för växtbiologi, Sveriges lantbruksuniversitet
    

• Martinez-Arias, Germán

  • Institutionen för växtbiologi, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Nätverk växtskydd
SLU Skogsskadecentrum


UKÄ forskningsämne

Bioinformatik och systembiologi
Botanik


Publikationens identifierare

DOI: https://doi.org/10.1016/j.virusres.2022.198958

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/119995