title: The Expanding Virosphere.
abstract: Multicomponent viruses are common in plants and fungi. In this issue of Cell Host & Microbe, Ladner et al. (2016) describe a multicomponent virus from animals. This supports an emerging view that invertebrates harbor a remarkable viral diversity and highlights how little of the virosphere has been explored.
authors.affiliation: Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, the University of Sydney, Sydney NSW 2006, Australia. Electronic address: edward.holmes@sydney.edu.au.
authors.forename: Edward C
authors.initials: EC
authors.lastname: Holmes
mesh_terms: D000818:Animals; D005658:Fungi; D014780:Viruses