A5013334072- Plant Virus Research Studies
- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Plant Pathogenic Bacteria Studies
- Plant Disease Resistance and Genetics
- Banana Cultivation and Research
- Evolution and Genetic Dynamics
- Cassava research and cyanide
- Agronomic Practices and Intercropping Systems
- Potato Plant Research
- Greenhouse Technology and Climate Control
- Bacteriophages and microbial interactions
- Plant and Fungal Interactions Research
- Plant Parasitism and Resistance
- Seed and Plant Biochemistry
- Body Image and Dysmorphia Studies
- Plant-Microbe Interactions and Immunity
- Plant Disease Management Techniques
- Cocoa and Sweet Potato Agronomy
- Genetic and Environmental Crop Studies
- Mycorrhizal Fungi and Plant Interactions
- Suicide and Self-Harm Studies
- Yeasts and Rust Fungi Studies
- RNA and protein synthesis mechanisms
- Homicide, Infanticide, and Child Abuse
Unité de Recherche Agrosystèmes tropicaux
2012-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2005-2024
Institut National de la Recherche Agronomique
2002-2014
University of North Carolina at Chapel Hill
2008
Flagstaff Medical Center
2007
Institut de Génétique, Environnement et Protection des Plantes
2005
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2000
Institut de Recherche pour le Développement
2000
Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
2000
The nematode-borne Grapevine fanleaf virus, from the genus Nepovirus in family Comoviridae, causes severe degeneration of grapevines most vineyards worldwide. We characterized 347 isolates transgenic and conventional two vineyard sites Champagne region France for their molecular variant composition. population structure genetic diversity were examined coat protein gene by IC-RT-PCR-RFLP analysis with EcoRI StyI, nucleotide sequencing, respectively. RFLP data suggested that 55 % (191 347) had...
In order to investigate the genetic diversity of Potato leafroll virus (PLRV), seven new complete genomic sequences isolates collected worldwide were compared with five available in GenBank. Then, a restricted polymorphic region genome was chosen further analyse sequences. The PLRV open reading frames (ORFs) 3 and 4 also those two other poleroviruses non-synonymous synonymous substitution ratio distribution analysed overlapping non-overlapping regions using maximum-likelihood models. Results...
Plant pathogens have evolved many dispersal mechanisms, using biotic or abiotic vectors a combination of the two. Rain splash is known from variety fungi, and can be an efficient driver crop epidemics, with infectious strains propagating rapidly among often genetically homogenous neighboring plants. Splashing nevertheless local process spores taking droplet ride seldom move farther than few decimeters. In this study, we assessed rain conidia yam anthracnose agent, Colletotrichum...
We explore the ability of optimal foraging theory to explain observation among marine bacteriophages that host range appears be negatively correlated with abundance in local environment. modified Charnov's classic diet composition model describe ecological dynamics related generalist and specialist φX174 G4, confirmed phages are ecologically favored only at high densities. Our accurately predicted phage populations laboratory microcosms, but had limited success predicting evolutionary...
Although the frequency and effects of neutral nearly mutations are critical to evolutionary patterns processes governed by genetic drift, small such make them difficult study empirically. Here we present results a mutation-accumulation experiment designed assess frequencies deleterious with undetectable effects. We promoted accumulation spontaneous subjecting independent lineages RNA virus 6 repeated population bottlenecks single individual. measured fitness following every bottleneck obtain...
Loss of varietal diversity is a worldwide challenge to crop species at risk for genetic erosion, while the loss biological resources may hinder future breeding objectives. varieties has been mostly investigated in traditional agricultural systems where variety numbers are dramatically high, or most economically important which comparison between pre-intensive and modern agriculture was possible. Varietal dynamics, i.e. turnover, gains losses by farmers, nevertheless more rarely studied we...
is a species complex of fungi belonging to the
The epidemiology of yam viruses remains largely unexplored. We present a large-scale epidemiological study in Guadeloupe based on the analysis 1124 leaf samples collected from yams and weeds. addressed prevalence cucumber mosaic virus (CMV), Cordyline 1 (CoV1), Dioscorea associated (DMaV), asymptomatic (YaV1), (YMV), mild (YMMV), badnaviruses, macluraviruses potexviruses, key drivers these viruses. provide evidence that several weeds are reservoirs YMMV isolates infecting cluster together...
Potato leafroll virus (PLRV) is a major constraint to potato production in North Africa. Serological (sandwich and cocktail ELISA) molecular (RT‐PCR) tests were used detect PLRV 131 samples collected different areas of Tunisia. RT‐PCR proved be usable as routine diagnostic test for epidemiological purposes, being more sensitive reliable, less time‐consuming, than serological tests. One RT‐PCR‐amplified portion ORF3 (336 nt) was cloned sequenced, characterization Tunisian isolates. These...
Crop disease often leads to field epidemics with serious threats yield. Early symptoms are sometimes difficult identify, so the origin of primary inoculum is a critical focal point in study plant diseases, as it can help design management strategies reduce crop losses. Here, we investigated whether anthracnose water yams (Dioscorea alata L.) caused by species complex Colletotrichum gloeosporioides start from infected seed tubers previous harvest. Over two years, collected varying pathogen...
Abstract Two members of the family Betaflexiviridae associated with yam ( Dioscorea spp.) have been described so far: latent virus (YLV) and Y (YVY). However, their geographical distribution molecular diversity remain poorly documented. Using a nested RT-PCR assay, we detected YVY in D. alata, bulbifera, cayenensis, rotundata , trifida Guadeloupe, Côte d'Ivoire, thus extending known host range this distribution. amplicon sequencing, determined that samples analyzed work ranged between 0.0...