Replication in the phloem is not necessary for efficient vascular transport of tobacco mosaic tobamovirus

FEBS Letters

Susi, Petri¹ 

[1]Department of Plant Production, P.O. Box 27, Viikki, 00014 University of Helsinki, Helsinki, Finland

关键词: Replication;    Tobacco mosaic tobamovirus;    Vascular transport;    LTD;    low temperature device;    MP;    movement protein;    PD;    plasmodesma;    SDS-PAGE;    sodium dodecyl sulphate polyacrylamide gel electrophoresis;    TMV;    tobacco mosaic tobamovirus;   

DOI  :  10.1016/S0014-5793(99)00282-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Plant viruses move systemically from one leaf to another via phloem. However, the viral functions needed for systemic movement are not fully elucidated. An experimental system was designed to study the effects of low temperature on the vascular transport of the tobacco mosaic tobamovirus (TMV). Vascular transport of TMV from lower inoculated leaves to upper non-inoculated leaves via a stem segment kept at low temperature (4°C) was not affected. On the other hand, several experiments were performed on tobacco leaves to demonstrate that virus replication did not occur at the same temperature. The data suggest that replication of TMV in the phloem of wild-type tobacco plants is not necessary for the vascular transport of TMV, and that the virus moves with photoassimilates as suggested previously.

【 授权许可】

Unknown