A5044707260- Plant Virus Research Studies
- Insect Resistance and Genetics
- Viral Infectious Diseases and Gene Expression in Insects
- Insect-Plant Interactions and Control
- Insect Pest Control Strategies
- Entomopathogenic Microorganisms in Pest Control
- Insect Pheromone Research and Control
- Oil Palm Production and Sustainability
- Insect symbiosis and bacterial influences
- CRISPR and Genetic Engineering
- Animal Virus Infections Studies
- Plant and soil sciences
- Biological Control of Invasive Species
- Legume Nitrogen Fixing Symbiosis
- Bacteriophages and microbial interactions
- African Botany and Ecology Studies
- Virology and Viral Diseases
- Banana Cultivation and Research
- Plant Parasitism and Resistance
- Date Palm Research Studies
- Agriculture and Rural Development Research
- Insect behavior and control techniques
- Vector-Borne Animal Diseases
- Ecology and Vegetation Dynamics Studies
- Communication and COVID-19 Impact
Centre Occitanie-Montpellier
2021-2024
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2020-2024
Plant Health Institute de Montpellier
2022-2024
Agropolis International
2019-2024
Pontificia Universidad Católica del Ecuador
2003-2024
Institut de Recherche pour le Développement
1999-2022
Université de Montpellier
2020-2022
Institut Agro Montpellier
2021-2022
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021-2022
Biologie et Génétique des Interactions Plante-Parasite
2018-2021
Invasive species are a major threat to the sustainable provision of ecosystem products and services, both in natural agricultural ecosystems. To understand spatial arrangement successively introduced into same ecosystem, we examined tolerance temperature analyzed field distribution three potato tuber moths (PTM, Lepidoptera: Gelechiidae), that were Ecuador since 1980s. We studied physiological responses constant temperatures PTM under laboratory conditions modeled consequences for their...
ABSTRACT Plant virus species of the family Nanoviridae have segmented genomes with highest known number segments encapsidated individually. They thus likely represent most extreme case so-called multipartite, or multicomponent, viruses. All are believed to be transmitted in a circulative nonpropagative manner by aphid vectors, meaning that simply crosses cellular barriers within body, from gut salivary glands, without replicating even expressing any its genes. However, this assumption is...
Nanoviruses are plant multipartite viruses with a genome composed of six to eight circular single-stranded DNA segments. The distinct segments encapsidated individually in icosahedral particles that measure ≈18 nm diameter. Recent studies on the model species Faba bean necrotic stunt virus (FBNSV) revealed complete sets genomic rarely occur infected cells and function encoded by given viral segment can complement others across neighbouring cells, presumably translocation gene products...
ABSTRACT Pariacoto virus (PaV) was recently isolated in Peru from the Southern armyworm ( Spodoptera eridania ). PaV particles are isometric, nonenveloped, and about 30 nm diameter. The has a bipartite RNA genome single major capsid protein with molecular mass of 39.0 kDa, features that support its classification as Nodavirus . As such, is first Alphanodavirus to have been outside Australasia. Here we report replicates wax moth larvae genomic RNAs replicate when transfected into cultured...
Multipartite viruses have a segmented genome, with each segment encapsidated separately. In all multipartite virus species for which the question has been addressed, distinct segments reproducibly accumulate at specific and host-dependent relative frequency, defined as 'genome formula'. Here, we test hypothesis that genome organization facilitates regulation of gene expression via changes formula thus copy number variations. first experiment, faba bean necrotic stunt (FBNSV), whose is...
Because multipartite viruses package their genome segments in different viral particles, they face a potentially huge cost if the entire genomic information, i.e., all segments, needs to be present concomitantly for infection function. Previous work with octapartite faba bean necrotic stunt virus (FBNSV; family Nanoviridae , genus Nanovirus ) showed that this issue can resolved at within-host level through supracellular functioning; do not need within same host cell but may complement each...
Vector transmission plays a primary role in the life cycle of viruses, and insects are most common vectors. An important mode vector transmission, reported only for plant is circulative nonpropagative whereby virus cycles within body its insect vector, from gut to salivary glands saliva, without replicating. This has been extensively studied viral families Luteoviridae Geminiviridae also Nanoviridae The biology viruses these three different, whether have evolved similar molecular/cellular...
An intriguing aspect of vector-transmission plant viruses is the frequent involvement a helper component (HC). HCs are virus-encoded non-structural proteins produced in infected cells that mandatory for transmission success. Over five decades, all data collected on from unrelated viral species transmitted by distinct vector were consistent with unique mode action designated “the bridge hypothesis”: HC has two functional domains, one binding virus particle and other putative receptor vector,...
Con el propósito de encontrar una alternativa al control químico del “cogollero maíz” Spodoptera frugiperda, principal plaga para cultivo maíz (Zea mays), se estudió la posibilidad utilizar como controlador biológico esta plaga, baculovirus SfVPN (Virus Poliedrosis Nuclear frugiperda). Utilizando larvas 3er estadío comprobó que es un eficiente biológico, determinándose dosis letal media fue 49,653 cuerpos inclusión (CI)/ larva, con promedio tiempo medio (TL50) 6.5 ± 0.5 días. Asímismo,...
Single-stranded DNA (ssDNA) plant viruses belong to the families Geminiviridae and Nanoviridae. They are transmitted by Hemipteran insects in a circulative, mostly non-propagative, manner. While geminiviruses leafhoppers, treehoppers, whiteflies aphids, nanoviruses exclusively aphids. Circulative transmission involves complex virus–vector interactions which epithelial cells have be crossed defense mechanisms counteracted. Vector taxa considered relevant taxonomic criterion for virus...
Nanoviruses are plant viruses with a multipartite single-stranded DNA (ssDNA) genome. Alphasatellites commonly associated nanovirus infections, but their putative impact on helper is unknown. In this study, we investigated the role of subterranean clover stunt alphasatellite 1 (here named SCSA 1) various important traits Faba bean necrotic yellows virus (FBNYV) in its host Vicia faba and aphid vector Acyrthosiphon pisum, including disease symptoms, viral accumulation, transmission. The...
La polilla guatemalteca de la papa Tecia solanivora (Lep.; Gelechiidae) es una las plagas más limitantes del cultivo en Venezuela, Colombia y Ecuador se revela como difícil control mediante el uso insecticidas químicos. Su biológico con granulovirus Phthorimaea operculella (PhopGV) ha sido, tanto otros países andinos, uno los principales componentes para su manejo. Corpoica posee planta, registrada ante Instituto Colombiano Agropecuario, manufacturar un bioplaguicida a base este virus. Dada...
Abstract Time delays complicates the analysis of trophic dependence, which requires large time series data to study local associations. Here we propose using species distribution modeling. This approach removes confounding lag effects and allows obtained separately in different species. Since is correlative, it cannot be interpreted terms causality. We apply method interaction between invasive potato moth Tecia solanivora its granulovirus PhoGV Northern Andes. Host density was analyzed based...
Multipartite viruses exhibit a fragmented genome composed of several nucleic acid segments individually packaged in distinct viral particles. The all species the genus Nanovirus holds eight segments, which accumulate at very specific and reproducible relative frequency host plant tissues. In given species, steady state pattern segments' frequencies is designated formula thought to have an adaptive function through modulation gene expression. Nanoviruses are aphid-transmitted circulative...