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Journal of Virology logoLink to Journal of Virology
. 1993 Jun;67(6):3660–3664. doi: 10.1128/jvi.67.6.3660-3664.1993

The cowpea mosaic virus M RNA-encoded 48-kilodalton protein is responsible for induction of tubular structures in protoplasts.

J Wellink 1, J W van Lent 1, J Verver 1, T Sijen 1, R W Goldbach 1, A van Kammen 1
PMCID: PMC237721  PMID: 8497075

Abstract

Tubular structures extending from plasmodesmata in cowpea mosaic virus (CPMV)-infected tissue have been implicated to play an important role in cell-to-cell movement of this virus. Using a cauliflower mosaic virus 35S promoter-based transient expression vector, we show that expression of only the CPMV M RNA-encoded 48-kDa protein (48K protein) in cowpea protoplasts is sufficient to induce these structures. Strikingly, expression of the 48K protein in protoplasts from a number of nonhost plant species, such as barley, Arabidopsis thaliana, and carrot, also resulted in tubular structure formation. Thus, it is not likely that the viral 48K protein, though playing a key role in cell-to-cell movement of CPMV, has a role in determining the host range of CPMV.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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