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Browsing by Author "Shepherd, Dionne"

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Adaptive evolution by recombination is not associated with increased mutation rates in Maize streak virus

Author: Monjane, Aderito ; Pande, Daniel ; Lakay, Francisco ; Shepherd, Dionne ; van der Walt, Eric ; Lefeuvre, Pierre ; Lett, Jean-Michel ; Varsani, Arvind ; Rybicki, Edward ; Martin, Darren Date: 2012 BACKGROUND: Single-stranded (ss) DNA viruses in the family Geminiviridae are proving to be very useful in real-time evolution studies. The high mutation rate of geminiviruses and other ssDNA viruses is somewhat mysterious in that their DNA ... Read more c b
Experimental evidence indicating that mastreviruses probably did not co-diverge with their hosts

Author: Harkins, Gordon ; Delport, Wayne ; Duffy, Siobain ; Wood, Natasha ; Monjane, Aderito ; Owor, Betty ; Donaldson, Lara ; Saumtally, Salem ; Triton, Guy ; Briddon, Rob ; Shepherd, Dionne ; Rybicki, Edward ; Martin, Darren ; Varsani, Arvind Date: 2009 BACKGROUND:Despite the demonstration that geminiviruses, like many other single stranded DNA viruses, are evolving at rates similar to those of RNA viruses, a recent study has suggested that grass-infecting species in the genus Mastrevirus ... Read more c b
A highly divergent South African geminivirus species illuminates the ancient evolutionary history of this family

Author: Varsani, Arvind ; Shepherd, Dionne ; Dent, Kyle ; Monjane, Aderito ; Rybicki, Edward ; Martin, Darren Date: 2009 BACKGROUND:We have characterised a new highly divergent geminivirus species, Eragrostis curvula streak virus (ECSV), found infecting a hardy perennial South African wild grass. ECSV represents a new genus-level geminivirus lineage, and has a ... Read more c b
Maize streak virus (MSV) diversity in Uganda and the assessment of gene silencing as a tool for development of resistance to MSV

Author: Owor, Betty Elizabeth Date: 2008 Maize streak virus (MSV: Family Geminiviridae, Genus Mastrevirus) is the causal agent of maize streak disease (MSD) that contributes significantly to low maize yields in Africa, thereby threatening food security of sub-Saharan Africa’s poorest ... Read more
The use of maize streak virus (MSV) replication-associated protein mutants in the development of MSV-resistant plants

Author: Shepherd, Dionne Date: 2003 Maize streak virus (MSV) is the type member of the Mastrevirus genus of the Geminiviridae. As the causal agent of maize streak disease (MSD), MSV is the most significant pathogen of maize in Africa, resulting in crop yield losses of up to ... Read more

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Browsing by Author "Shepherd, Dionne"

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