Abstract
Virus infection is established when viral proteins can interact with host factors to execute replication and/or cell-to-cell movement. Even after the virus infection has started, host resistance reactions, if trigged, would suppress further virus propagation. We would like to introduce what we understand about host factors as determinants of infection establishment and as key resistance molecules. Genome-wide information of Arabidopsis is providing us much information about such host factors involved in virus infection.
