Complete genome sequence of arracacha mottle virus

Area of Science:

• Plant Virology
• Molecular Biology
• Genomics

Background:

• Arracacha mottle virus (AMoV) is the sole potyvirus identified in arracacha (Arracacia xanthorrhiza) in Brazil.
• Understanding the genetic makeup of AMoV is crucial for managing its impact on arracacha cultivation.

Purpose of the Study:

• To determine the complete genome sequence of an Arracacha mottle virus isolate from Brazil.
• To analyze the genomic organization and identify conserved motifs within the AMoV genome.

Main Methods:

• Whole-genome sequencing of the AMoV isolate.
• Bioinformatic analysis to determine genome length, polyprotein coding, and conserved motifs.
• Comparative genomic analysis with related viruses.

Main Results:

• The complete genome sequence of AMoV was determined to be 9,630 nucleotides (excluding the 3' poly-A tail).
• The genome encodes a polyprotein of 3,135 amino acids and a putative P3N-PIPO protein.
• Genomic organization aligns with typical Potyvirus members, including conserved motifs.
• The AMoV genome shared 56.2% nucleotide identity with sunflower chlorotic mottle virus and verbena virus Y.

Conclusions:

• The determined genome sequence provides a comprehensive genetic resource for AMoV.
• The findings confirm AMoV's classification within the Potyvirus genus.
• This study enhances the understanding of arracacha-pathogen interactions in Brazil.