Viruses for breakfast, lunch and dinner

Geering Andrew D., Choisne Nathalie, Vezzulli Silvia, Scalabrin Simone, Quesneville Hadi, Velasco Riccardo, Teycheney Pierre-Yves. 2010. Viruses for breakfast, lunch and dinner. In : Book of abstract of the 9th Australasian Plant Virology Workshop "Plant viruses: Friend or foe?", Melbourne, Australia, 16-19 November 2010. Australasian Plant Pathology Society (APPS). s.l. : Brendan Rodoni, Résumé, 38. ISBN 978-1-74264-590-2 Australasian Plant Virology Workshop /Plant viruses: Friend or foe?. 9, Melbourne, Australie, 16 Novembre 2010/19 Novembre 2010.

Résumé : Endogenous sequences from members of the Caulimoviridae and Geminiviridae have been identified in the genome of several plant species. These sequences are thought to result from illegitimate recombination events and are generally replication-defective. However, some endogenous caulimovirid sequences in tobacco, petunia and banana are capable of causing infection. We have performed in silico analyses on nucleotide sequences from plant genome databases and reconstituted twelve full length and potentially replication-competent viral genomes from endogenous viral sequences embedded in the genomes of monocotyledonous and dicotyledonous plant species of the Brassicaceae, Euphorbiaceae, Fabaceae, Myrtaceae, Poaceae, Rutaceae, Salicaceae and Vitaceae. Sequence analyses show that the corresponding viruses belong to a new genus in the family Caulimoviridae, tentatively named Dionyvirus. Maps showing the distribution of the endogenous dionyviral sequences in the genomes of Vitis vinifera, Prunus persica and Oryza sativa have been produced and copy numbers determined. Dionyvirus-specific primers were designed and used for a PCR-based large scale screening of plant germplasm, which demonstrated that that the endogenous dionyviral sequences are widespread among plants of temperate, tropical and subarctic origins. The potential contributions of endogenous viral sequences to normal plant functions and to plant and virus evolution will be discussed.

Classification Agris : H20 - Maladies des plantes

Auteurs et affiliations

• Geering Andrew D., QDPI (AUS)
• Choisne Nathalie, INRA (FRA)
• Vezzulli Silvia, IASMA (ITA)
• Scalabrin Simone, Università Di Udine (ITA)
• Quesneville Hadi, INRA (FRA)
• Velasco Riccardo, IASMA (ITA)
• Teycheney Pierre-Yves, CIRAD-BIOS-UPR Multiplication végétative (GLP) ORCID: 0000-0002-9754-0745

Source : Cirad - Agritrop (https://agritrop.cirad.fr/569603/)

Métriques

[ Page générée et mise en cache le 2022-04-16 ]