Picobirnavirus: how do you find where it's hiding?

Area of Science:

• Virology
• Genomics
• Ecology

Background:

• Picobirnaviruses (PBVs) are double-stranded RNA viruses found in diverse environments and hosts, including humans, animals, and invertebrates.
• Initially detected in human feces, their role as enteric pathogens remains unconfirmed, with potential for asymptomatic colonization or non-human host infection.

Purpose of the Study:

• To critically examine methods for detecting picobirnaviruses (PBVs) and inferring their host range.
• To evaluate the challenges and limitations in current PBV detection and host determination techniques.

Main Methods:

• Review of experimental and bioinformatic approaches for PBV genome identification (e.g., PCR, metagenomic sequencing).
• Analysis of methods for host determination (e.g., culturing, codon usage bias, model system cloning).

Main Results:

• PBVs exhibit high genetic diversity and variable genetic code usage, suggesting potential infection of unconventional hosts.
• Current methods for PBV detection and host range determination have associated challenges and limitations.

Conclusions:

• Elucidating the host range of PBVs is essential for understanding their biological functions and ecological significance.
• Determining PBV hosts is critical for assessing their impact on human and animal health and microbial communities.