title: Bean pod mottle virus: a new powerful tool for functional genomics studies in Pisum sativum.
abstract: Pea (Pisum sativum L.) is an important legume worldwide. The importance of pea in arable rotations and nutritional value for both human and animal consumption have fostered sustained production and different studies to improve agronomic traits of interest. Moreover, complete sequencing of the pea genome is currently underway and will lead to the identification of a large number of genes potentially associated with important agronomic traits. Because stable genetic transformation is laborious for pea, virus-induced gene silencing (VIGS) appears as a powerful alternative technology for determining the function of unknown genes. In this work, we present a rapid and efficient viral inoculation method using DNA infectious plasmids of Bean pod mottle virus (BPMV)-derived VIGS vector. Six pea genotypes with important genes controlling biotic and/or abiotic stresses were found susceptible to BPMV carrying a GFP reporter gene and showed fluorescence in both shoots and roots. In a second step, we investigated 37 additional pea genotypes and found that 30 were susceptible to BPMV and only 7 were resistant. The capacity of BPMV to induce silencing of endogenes was investigated in the most susceptible genotype using two visual reporter genes: PsPDS and PsKORRIGAN1 (PsKOR1) encoding PHYTOENE DESATURASE and a 1,4-β-D-glucanase, respectively. The features of the 'one-step' BPMV-derived VIGS vector include (i) the ease of rub-inoculation, without any need for biolistic or agro-inoculation procedures, (ii) simple cost-effective procedure and (iii) noninterference of viral symptoms with silencing. These features make BPMV the most adapted VIGS vector in pea to make low- to high-throughput VIGS studies.
authors.affiliation: Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d'Evry, Université Paris-Diderot Sorbonne Paris-Cité, Université Paris-Saclay, Orsay, France.
authors.forename: Chouaib
authors.initials: C
authors.lastname: Meziadi
authors.affiliation: Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d'Evry, Université Paris-Diderot Sorbonne Paris-Cité, Université Paris-Saclay, Orsay, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Blanchet
authors.affiliation: Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d'Evry, Université Paris-Diderot Sorbonne Paris-Cité, Université Paris-Saclay, Orsay, France.
authors.forename: Manon M S
authors.initials: MM
authors.lastname: Richard
authors.affiliation: INRA, UMR 1349 IGEPP, Le Rheu, France.
authors.forename: Marie-Laure
authors.initials: ML
authors.lastname: Pilet-Nayel
authors.affiliation: Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d'Evry, Université Paris-Diderot Sorbonne Paris-Cité, Université Paris-Saclay, Orsay, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Geffroy
authors.affiliation: Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d'Evry, Université Paris-Diderot Sorbonne Paris-Cité, Université Paris-Saclay, Orsay, France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Pflieger
mesh_terms: D017798:Comovirus / Q000235:genetics* / Q000472:pathogenicity; D020868:Gene Silencing; D005822:Genetic Vectors; D023281:Genomics / Q000379:methods*; D005838:Genotype; D010088:Oxidoreductases / Q000235:genetics; D018532:Pisum sativum / Q000235:genetics* / Q000821:virology*; D035261:Plant Components, Aerial / Q000821:virology; D010935:Plant Diseases / Q000821:virology; D010940:Plant Proteins / Q000235:genetics; D018517:Plant Roots / Q000821:virology
chemical_list: D010940:Plant Proteins; D010088:Oxidoreductases; C022398:phytoene dehydrogenase
keywords: Bean pod mottle virus; Pisum sativum; RNAi; functional validation; legume; post-transcriptional gene silencing