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Molecular characterisation of dicot-infecting mastreviruses from Australia

Hadfield, J. and Thomas, J. E. and Schwinghamer, M. W. and Kraberger, S. and Stainton, D. and Dayaram, A. and Parry, J. N. and Pande, D. and Martin, D. P. and Varsani, A. (2012) Molecular characterisation of dicot-infecting mastreviruses from Australia. Virus Research, 166 (1-2). pp. 13-22.

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Article Link(s): http://dx.doi.org/10.1016/j.virusres.2012.02.024

Publisher URL: http://www.elsevier.com

Abstract

Monocotyledonous and dicotyledonous plant infecting mastreviruses threaten various agricultural systems throughout Africa, Eurasia and Australasia. In Australia three distinct mastrevirus species are known to infect dicotyledonous hosts such as chickpea, bean and tobacco. Amongst 34 new "dicot-infecting" mastrevirus full genome sequences obtained from these hosts we discovered one new species, four new strains, and various variants of previously described mastrevirus species. Besides providing additional support for the hypothesis that evolutionary processes operating during dicot-infecting mastrevirus evolution (such as patterns of pervasive homologous and non-homologous recombination, and strong purifying selection acting on all genes) have mostly mirrored those found in their monocot-infecting counterparts, we find that the Australian dicot-infecting viruses display patterns of phylogeographic clustering reminiscent of those displayed by monocot infecting mastrevirus species such as Panicum streak virus and Maize streak virus.

Item Type:Article
Business groups:Agri-Science, Crop and Food Science, Horticulture and Forestry Science, QAFFI
Additional Information:© 2012 Elsevier B.V. All rights reserved.
Keywords:Dicot-infecting mastreviruses; recombination; geminivirus; chickpea; bean; tobacco; maize streak virus; Yellow-dwarf-virus; chickpea cicer-arietinum; stranded-DNA viruses; recombination patterns; genomes; maximum-likelihood; mosaic structure; sequences; algorithm; Australia.
Subjects:Science > Botany
Plant pests and diseases
Plant culture > Field crops
Deposited On:24 Jul 2012 06:26
Last Modified:24 Jul 2012 06:26

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