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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 1, No. 2, 1998, pp. 65-82
Bioline Code: ej98010
Full paper language: English
Document type: Review Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 1, No. 2, 1998, pp. 65-82

 en Plant virus gene expression strategies
Bustamante, Pedro I. & Hull, Roger

Abstract

Plant viruses can cause serious losses to most, if not all, major crops upon which depend for food. Many viruses are endemic, causing moderate losses each year. Others, such as those causing rice tungro, give periodic severe epidemics. There are no fully collated figures for world-wide losses due to viruses but some examples has been listed, i.e., rice tungro in SE ASIA and african cassava mosaic in Africa with 1,500 and 2,000 millions dollars per year in losses respectively.

However, in recent years the understanding of the genome organisation of plant viruses has increased in parallel with development of molecular biological techniques. The ability to obtain nucleotide sequences of complete viral genomes has also permitted the elucidation and understanding of expression strategies used by many different plant viruses. This review is aimed to summarise some aspects of the main strategies used by plant viruses to express their genomes.

Keywords
Plant virus, Gene expression, Subgenomic RNA, Frameshifting, Read-through, Polyprotein

 
© 1998 by Universidad Católica de Valparaíso -- Chile
Alternative site location: http://www.ejbiotechnology.info

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