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Identification of plant viruses using one-dimensional gel electrophoresis and peptide mass fingerprints
Journal article   Open access   Peer reviewed

Identification of plant viruses using one-dimensional gel electrophoresis and peptide mass fingerprints

H. Luo, S.J. Wylie and M.G.K. Jones
Journal of Virological Methods, Vol.165(2), pp.297-301
2010
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Abstract

A generic assay to detect and partially characterize unknown viruses from plants was developed. Proteins extracted from virus-infected and uninfected plants were separated in one dimension by SDS polyacrylamide gel electrophoresis. Differentially expressed protein bands were eluted after trypsin digestion and resulting peptide fragments separated according to their mass by matrix-assisted laser-desorption ionization time-of-flight (MALDI-TOF) mass spectrometry. Resulting peptide mass fingerprints (PMF) were compared with those in protein databases. The assay was used to identify three known viruses: the potyviruses Zucchini yellow mosaic virus and Turnip mosaic virus, and an alfamovirus Alfalfa mosaic virus. It was also used to identify a virus that manifested symptoms in wild Cakile maritima plants, tentatively identified as Pelargonium zonate spot virus (PZSV) (genus Anulavirus) by its PMF, and then confirmed by nucleotide sequencing. The detection of PZSV constitutes a first record of this virus in Australia and in this host. It is proposed that this rapid and simple assay is a useful approach for analysis of plant samples known to harbor viruses that could not be identified using antisera or nucleic acid-based assays.

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Citation topics
3 Agriculture, Environment & Ecology
3.267 Virology - Plant
3.267.356 Plant Virus Interactions
Web Of Science research areas
Biochemical Research Methods
Biotechnology & Applied Microbiology
Virology
ESI research areas
Microbiology
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