Potato virus X: A global potato-infecting virus and type member of the Potexvirus genus

Taxonomy Potato virus X is the type-member of the plant-infecting Potexvirus genus in the family Alphaflexiviridae. Physical properties Potato virus X (PVX) virions are flexuous filaments 460-480 nm in length. Virions are 13 nm in diameter and have a helical pitch of 3.4 nm. The genome is approximately 6.4 kb with a 5 ' cap and 3 ' poly(A) terminus. PVX contains five open reading frames, four of which are essential for cell-to-cell and systemic movement. One protein encodes the viral replicase. Cellular inclusions, known as X-bodies, occur near the nucleus of virus-infected cells. Hosts The primary host is potato, but it infects a wide range of dicots. Diagnostic hosts include Datura stramonium and Nicotiana tabacum. PVX is transmitted in nature by mechanical contact. Useful website

Automated summary

Potato virus X is a plant-infecting virus belonging to the Potexvirus genus in the Alphaflexiviridae family. It primarily infects potatoes but can also infect a wide range of dicots. The virus has a genome size of approximately 6.4 kb with five open reading frames, one of which encodes the viral replicase.