NLM DIR Seminar Schedule

UPCOMING SEMINARS

RECENT SEMINARS

Scheduled Seminars on Oct. 16, 2024

Speaker
Valerian Dolja
PI/Lab
Time
11 a.m.
Presentation Title
Diversity and evolution of the global RNA virome: from bacteriophages to viruses of plants and animals
Location
38A, B2, NCBI Library

Contact NLMDIRSeminarScheduling@mail.nih.gov with questions about this seminar.

Abstract:

Upon covering current concepts of the virus origins and a logic of virus evolution, the focus of the talk will be on recent explosive growth in the known diversity of the global RNA virosphere. This growth resulted in a dramatic shift in the understanding of the evolutionary pathways of the RNA viruses and development of the virus classification (megataxonomy) based on their natural histories. More specific aspects of the presentation will include development of the comprehensive phylogeny for all RNA viruses (currently kingdom Orthornavirae) that is used as a scaffold for revealing how RNA virus genomes diversify, increase their complexity and expand their host ranges along with evolution of the biosphere. We will also consider the structure and functions of the known orthornavirus proteome. Finally, we will briefly discuss the greatly expanded realm of the subviral RNA replicons, the viroid-like circular RNAs.