title: Recent progress in research on cell-to-cell movement of rice viruses.
abstract: To adapt to plants as hosts, plant viruses have evolutionally needed the capacity to modify the host plasmodesmata (PD) that connect adjacent cells. Plant viruses have acquired one or more genes that encode movement proteins (MPs), which facilitate the cell-to-cell movement of infectious virus entities through PD to adjacent cells. Because of the diversity in their genome organization and in their coding sequences, rice viruses may each have a distinct cell-to-cell movement strategy. The complexity of their unusual genome organizations and replication strategies has so far hampered reverse genetic research on their genome in efforts to investigate virally encoded proteins that are involved in viral movement. However, the MP of a particular virus can complement defects in cell-to-cell movement of other distantly related or even unrelated viruses. Trans-complementation experiments using a combination of a movement-defective virus and viral proteins of interest to identify MPs of several rice viruses have recently been successful. In this article, we reviewed recent research that has advanced our understanding of cell-to-cell movement of rice viruses.
authors.affiliation: Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo Tokyo, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Hiraguri
authors.affiliation: Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo Tokyo, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Netsu
authors.affiliation: Gene Research Center, Tokyo University of Agriculture and Technology Fuchu, Tokyo, Japan.
authors.forename: Nobumitsu
authors.initials: N
authors.lastname: Sasaki
authors.affiliation: Gene Research Center, Tokyo University of Agriculture and Technology Fuchu, Tokyo, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nyunoya
authors.affiliation: Plant Disease Group, Agro-Environment Research Division, Kyushu Okinawa Agricultural Research Center, National Agriculture and Food Research Organization Koshi, Kumamoto, Japan.
authors.forename: Takahide
authors.initials: T
authors.lastname: Sasaya
keywords: cell-to-cell movement; movement protein; rice; rice virus; trans-complementation experiment