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Browsing by Author "Lefeuvre, Pierre"

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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
Avoidance of Protein Fold Disruption in Natural Virus Recombinants

Author: Lefeuvre, Pierre ; Lett, Jean-Michel ; Reynaud, Bernard ; Martin, Darren P Date: 2007 Author Summary The exchange of genetic material between different virus species, called inter-species recombination, has the potential to generate, within a single genome replication cycle, an almost unimaginable number of genetically distinct ... Read more c b
Comparative analysis of Panicum streak virus and Maize streak virus diversity, recombination patterns and phylogeography

Author: Varsani, Arvind ; Monjane, Aderito ; Donaldson, Lara ; Oluwafemi, Sunday ; Zinga, Innocent ; Komba, Ephrem ; Plakoutene, Didier ; Mandakombo, Noella ; Mboukoulida, Joseph ; Semballa, Silla ; Briddon, Rob ; Markham, Peter ; Lett, Jean-Michel ; Lefeuvre, Pierre ; Ry Date: 2009 BACKGROUND: Panicum streak virus (PanSV; Family Geminiviridae; Genus Mastrevirus) is a close relative of Maize streak virus (MSV), the most serious viral threat to maize production in Africa. PanSV and MSV have the same leafhopper vector ... Read more c b
Complex recombination patterns arising during geminivirus coinfections preserve and demarcate biologically important intra-genome interaction networks

Author: Martin, Darren P ; Lefeuvre, Pierre ; Varsani, Arvind ; Hoareau, Murielle ; Semegni, Jean-Yves ; Dijoux, Betty ; Vincent, Claire ; Reynaud, Bernard ; Lett, Jean-Michel Date: 2011 Author Summary Genetic recombination between viruses is a form of parasexual reproduction during which two parental viruses each contribute genetic information to an offspring, or recombinant, virus. Unlike with sexual reproduction, however, ... Read more c b
East African cassava mosaic-like viruses from Africa to Indian ocean islands: molecular diversity, evolutionary history and geographical dissemination of a bipartite begomovirus

Author: De Bruyn, Alexandre ; Villemot, Julie ; Lefeuvre, Pierre ; Villar, Emilie ; Hoareau, Murielle ; Harimalala, Mireille ; Abdoul-Karime, Anli ; Abdou-Chakour, Chadhouliati ; Reynaud, Bernard ; Harkins, Gordon ; Varsani, Arvind ; Martin, Darren ; Lett, Jean-Michel Date: 2012 BACKGROUND: Cassava (Manihot esculenta) is a major food source for over 200 million sub-Saharan Africans. Unfortunately, its cultivation is severely hampered by cassava mosaic disease (CMD). Caused by a complex of bipartite cassava mosaic ... Read more c b
Evolutionary time-scale of the begomoviruses: evidence from integrated sequences in the Nicotiana genome

Author: Lefeuvre, Pierre ; Harkins, Gordon W ; Lett, Jean-Michel ; Briddon, Rob W ; Chase, Mark W ; Moury, Benoit ; Martin, Darren P Date: 2011 Despite having single stranded DNA genomes that are replicated by host DNA polymerases, viruses in the family Geminiviridae are apparently evolving as rapidly as some RNA viruses. The observed substitution rates of geminiviruses in the genera ... Read more c b
Identification of the Begomoviruses Squash Leaf Curl Virus and Watermelon Chlorotic Stunt Virus in Various Plant Samples in North America

Author: Fontenele, Rafaela S ; Bhaskara, Amulya ; Cobb, Ilaria N ; Majure, Lucas C ; Salywon, Andrew M ; Avalos-Calleros, Jesús A ; Argüello-Astorga, Gerardo R ; Schmidlin, Kara ; Roumagnac, Philippe ; Ribeiro, Simone G ; Kraberger, Simona ; Martin, Darren P ; Lefeuvre, Pierre ; Varsani, Arvind Date: 30 Apr 2021 Geminiviruses are a group of plant-infecting viruses with single-stranded DNA genomes. Within this family, viruses in the genus Begomovirus are known to have a worldwide distribution causing a range of severe diseases in a multitude of ... Read more
Molecular mechanisms of recombination restriction in the envelope gene of the human immunodeficiency virus

Author: Simon-Loriere, Etienne ; Galetto, Roman ; Hamoudi, Meriem ; Archer, John ; Lefeuvre, Pierre ; Martin, Darren P ; Robertson, David L ; Negroni, Matteo Date: 2009 Author Summary Recombination allows mixing portions of genomes of different origins, generating chimeric genes and genomes. With respect to the random generation of new mutations, it can lead to the simultaneous insertion of several substitutions, ... Read more c b
New World Cactaceae Plants Harbor Diverse Geminiviruses

Author: Fontenele, Rafaela S ; Salywon, Andrew M ; Majure, Lucas C ; Cobb, Ilaria N ; Bhaskara, Amulya ; Avalos-Calleros, Jesús A ; Argüello-Astorga, Gerardo R ; Schmidlin, Kara ; Khalifeh, Anthony ; Smith, Kendal ; Schreck, Joshua ; Lund, Michael C ; Köhler, Matias ; Wojciechowski, Martin F ; Hodgson, Wendy C ; Puente-Martinez, Raul ; Van Doorslaer, Koenraad ; Kumari, Safaa ; Oyeniran, Kehinde A ; Vernière, Christian ; Filloux, Denis ; Roumagnac, Philippe ; Lefeuvre, Pierre ; Ribeiro, Simone G ; Kraberger, Simona P ; Martin, Darren P ; Varsani, Arvind Date: 16 Apr 2021 The family Cactaceae comprises a diverse group of typically succulent plants that are native to the American continent but have been introduced to nearly all other continents, predominantly for ornamental purposes. Despite their economic, ... Read more c b
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
The spread of Tomato yellow leaf curl virus from the Middle East to the world

Author: Lefeuvre, Pierre ; Martin, Darren P ; Harkins, Gordon ; Lemey, Philippe ; Gray, Alistair J A ; Meredith, Sandra ; Lakay, Francisco ; Monjane, Adérito ; Lett, Jean-Michel ; Varsani, Arvind Date: 2010 Author Summary Tomato yellow leaf curl virus (TYLCV) poses a serious threat to tomato production throughout the temperate regions of the world. Our analysis, using a suite of bioinformatic tools applied to all publically available TYLCV genome ... Read more c b

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