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Browsing by Author "Owor, Betty E"

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Genetic analysis of maize streak virus isolates from Uganda reveals widespread distribution of a recombinant variant.

Author: Owor, Betty E ; Martin, Darren P ; Shepherd, Dionne N ; Edema, Richard ; Monjane, Ade´rito L ; Rybicki, Edward P ; Thomson, Jennifer A ; Vasani, Arvind Date: 2007 Maize streak virus (MSV) contributes significantly to the problem of extremely low African maize yields. Whilst a diverse range of MSV and MSV-like viruses are endemic in sub-Saharan Africa and neighbouring islands, only a single group of ... Read more
A new African streak virus species from Nigeria

Author: Oluwafemi, Sunday ; Varsani, Arvind ; Monjane, Ade´rito L ; Shepherd, Dionne N ; Owor, Betty E ; Rybicki, Edward P ; Martin, Darren P Date: 2008 The African streak viruses (AfSVs) are a diverse group of mastrevirus species (family Geminiviridae) that infect a wide variety of annual and perennial grass species across the African continent and its nearby Indian Ocean islands. Six AfSV ... Read more
A novel species of mastrevirus (family Geminiviridae) isolated from Digitaria didactyla grass from Australia

Author: Briddon, Rob W ; Martin, Darren P ; Owor, Betty E ; Donaldson, Lara ; Markham, Peter G ; Varsani, Arvind ; Greber, Ray S Date: 2010 Mastreviruses (family Geminiviridae) that infect monocotyledonous plants occur throughout the temperate and tropical regions of Asia, Africa, Europe and Australia. Despite the identification of a very diverse array of mastrevirus species whose ... Read more
Novel sugarcane streak and sugarcane streak Reunion mastreviruses from southern Africa and La Réunion.

Author: Shepherd, Dionne N ; Varsani, Arvind ; Windram, Oliver P ; Lefeuvre, Pierre ; Monjane, Ade´rito L ; Owor, Betty E ; Martin, Darren P Date: 2008 The sugarcane infecting streak viruses (SISVs) are mastreviruses (Family Geminiviridae) belonging to a group of ‘‘African streak viruses’’ (AfSVs) that includes the economically devastating Maize streak virus (MSV). Although there are three ... Read more
A protocol for the rapid isolation of full geminivirus genomes from dried plant tissue

Author: Shepherd, Dionne N ; Martin, Darren P ; Lefeuvre, Pierre ; Monjane, Aderito L ; Owor, Betty E ; Rybicki, Edward P ; Varsani, Arvind Date: 2008 A high-throughput method of isolating and cloning geminivirus genomes from dried plant material, by combining an Extract-n-AmpTM-based DNA isolation technique with rolling circle amplification (RCA) of viral DNA, is presented. Using this ... Read more c b n d
Recombination, decreased host specificity and increased mobility may have driven the emergence of maize streak virus as an agricultural pathogen.

Author: Varsani, Arvind ; Shepherd, Dionne N ; Monjane, Ade´rito L ; Owor, Betty E ; Erdmann, Julia B ; Rybicki, Edward P ; Peterschmitt, Michel ; Briddon, Rob W ; Markham, Peter G ; Oluwafemi, Sunday ; Windram, Oliver P ; Lefeuvre, Pierre ; Lett, Jean-Michel ; Martin, Darren P Date: 2008 Maize streak virus (MSV; family Geminiviridae, genus Mastrevirus), the causal agent of maize streak disease, ranks amongst the most serious biological threats to food security in subSaharan Africa. Although five distinct MSV strains have been ... Read more
Successful application of FTA Classic Card technology and use of bacteriophage phi29 DNA polymerase for large-scale field sampling and cloning of complete maize streak virus genomes

Author: Owor, Betty E ; Shepherd, Dionne N ; Taylor, Nigel J ; Edema, Richard ; Monjane, Aderito L ; Thomson, Jennifer A ; Martin, Darren P ; Varsani, Arvind Date: 2007 Leaf samples from 155 maize streak virus (MSV)-infected maize plants were collected from 155 farmers’ fields in 23 districts in Uganda in May/June 2005 by leaf-pressing infected samples onto FTA® Classic Cards. Viral DNA was successfully ... Read more c b n d

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Browsing by Author "Owor, Betty E"

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