Myosins VIII and XI Play Distinct Roles in Reproduction and Transport of


Viruses are parasites that require the host cell machinery for their propagation within and between cells. Myosins are molecular motors involved in the trafficking of cargos along actin filaments. Plant viruses have evolved to borrow this transport mechanism to aid their infection and spread within the plant. However, little is known about which of the many plant myosins are essential and at which specific steps they act to support virus infection. Here we investigated the role of different N. benthamiana myosins during the infection by Tobacco mosaic virus (TMV). Our results show that class XI myosins play specific roles in the reproduction and intracellular movement of TMV in association with the dynamic endoplasmic reticulum network, whereas class VIII myosins support the specific targeting of the viral movement protein to plasmodesmata and thus the cell-to-cell movement of the virus. Together these results indicate that TMV interacts with distinct myosins during specific infection steps.


Vyšlo v časopise: Myosins VIII and XI Play Distinct Roles in Reproduction and Transport of. PLoS Pathog 10(10): e32767. doi:10.1371/journal.ppat.1004448
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.ppat.1004448

Souhrn

Viruses are parasites that require the host cell machinery for their propagation within and between cells. Myosins are molecular motors involved in the trafficking of cargos along actin filaments. Plant viruses have evolved to borrow this transport mechanism to aid their infection and spread within the plant. However, little is known about which of the many plant myosins are essential and at which specific steps they act to support virus infection. Here we investigated the role of different N. benthamiana myosins during the infection by Tobacco mosaic virus (TMV). Our results show that class XI myosins play specific roles in the reproduction and intracellular movement of TMV in association with the dynamic endoplasmic reticulum network, whereas class VIII myosins support the specific targeting of the viral movement protein to plasmodesmata and thus the cell-to-cell movement of the virus. Together these results indicate that TMV interacts with distinct myosins during specific infection steps.


Zdroje

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