Expression of the movement protein of Tomato spotted wilt virus in its insect vector Frankliniella occidentalis

Tomato spotted wilt virus (TSWV) is able to infect both its botanical hosts and its insect vector (thrips). In plant tissue the NS(M) protein of TSWV functions as viral movement protein (MP), aggregating into plasmodesma-penetrating tubules to establish cell-to-cell movement. As upon heterologous ex...

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Bibliographic Details
Published in:Archives of virology 2002-04, Vol.147 (4), p.825-831
Main Authors: Storms, M M H, Nagata, T, Kormelink, R, Goldbach, R W, van Lent, J W M
Format: Article
Language:English
Subjects:
Aggregates
Animals
Genomes
Immunohistochemistry
Infections
Insect Vectors - virology
Insecta - virology
Larva - virology
Life Cycle Stages
Plant Viral Movement Proteins
Proteins
Tospovirus - metabolism
Viral Proteins - analysis
Viral Proteins - metabolism
Viruses
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Summary:Tomato spotted wilt virus (TSWV) is able to infect both its botanical hosts and its insect vector (thrips). In plant tissue the NS(M) protein of TSWV functions as viral movement protein (MP), aggregating into plasmodesma-penetrating tubules to establish cell-to-cell movement. As upon heterologous expression NS(M) was able to form similar tubules on the surface of insect (Spodoptera frugiperda) cells, we have now investigated the expression and cellular manifestation of this protein in infected thrips tissue. It is shown that NS(M), though detectably expressed in both the L2 larval and adult thrips stages, does not aggregate into tubules, indicating that this requirement is associated to its function as MP in plants, and raising the question if NS(M) has a function at all during the insect life cycle of TSWV.
ISSN:0304-8608
1432-8798
DOI:10.1007/s007050200029