A5030219335- Insect symbiosis and bacterial influences
- Enzyme-mediated dye degradation
- Studies on Chitinases and Chitosanases
- Insect and Arachnid Ecology and Behavior
- Crustacean biology and ecology
- Entomopathogenic Microorganisms in Pest Control
- Physiological and biochemical adaptations
- Parasitic Diseases Research and Treatment
- Insect behavior and control techniques
- Legume Nitrogen Fixing Symbiosis
- CRISPR and Genetic Engineering
- Legionella and Acanthamoeba research
- Neurobiology and Insect Physiology Research
- Insect and Pesticide Research
- Insect-Plant Interactions and Control
- Invertebrate Immune Response Mechanisms
- Marine Biology and Environmental Chemistry
- Genomics and Phylogenetic Studies
- Bacterial biofilms and quorum sensing
- Vibrio bacteria research studies
National Agriculture and Food Research Organization
2022-2024
Institute of Agrobiological Sciences
2022-2024
Ecologie & Evolution
2020-2021
Université de Poitiers
2018-2021
Centre National de la Recherche Scientifique
2018-2021
Écologie et Biologie des Interactions
2018-2021
Abstract It is advantageous for maternally transmitted endosymbionts to skew the sex ratio of their hosts toward females. Some endosymbiotic bacteria, such as Wolbachia, cause insect exclusively produce female offspring through male killing (MK) or feminization. In some lepidopteran insects, MK achieved by affecting sex-determining process in males, and a unique mechanism its functional link with feminization have been implicated. However, comparative analysis these phenotypes often...
Isopods constitute a particular group of crustaceans that has successfully colonized all environments including marine, freshwater and terrestrial habitats. Their ability to use various food sources, especially plant biomass, might be one the reasons their successful spread. All isopods, which feed on plants by-products, must capable lignocellulose degradation. This complex composite is main component therefore an important nutrient source for many living organisms. Its degradation requires...
Isopods have colonized all environments, partly thanks to their ability decompose the organic matter. Their enzymatic repertoire, as well one of associated microbiota, has contributed colonization success. Together, these holobionts evolved several interesting life history traits degrade plant cell walls, mainly composed lignocellulose. It been shown that terrestrial isopods achieve lignocellulose degradation numerous and diverse CAZymes provided by both host its microbiota. Nevertheless,...
ABSTRACT It is advantageous for maternally transmitted endosymbionts to skew the sex ratio of their hosts toward females. Some endosymbiotic bacteria such as Wolbachia cause insect exclusively produce female offspring through male killing or feminization. In some lepidopteran insects, achieved by affecting sex-determining process in males, and a unique mechanism its functional link with feminization have been implicated. However, comparative analysis these phenotypes often difficult because...
Using the isopod Armadillidium vulgare as a case study, we review significance of "bacterial dosage model", which connects expression extended phenotype to rise Wolbachia load. In isopods, Insulin-like Androgenic Gland hormone (IAG) induces male differentiation: feminizes males through insulin resistance, presumably defunct receptors. This should prevent an autocrine development androgenic glands so that females differentiate instead: feminization translate IAG silencing and increased load...
Wolbachia, a maternally transmitted bacterium, shows male-killing, an adaptive phenotype for cytoplasmic elements, in various arthropod species during the early developmental stages. In lepidopteran insects, lethality of males is accounted by improper dosage compensation sex-linked genes owing to Wolbachia-induced feminization. Herein, we established Ostrinia scapulalis cell lines that retained sex specificity per splicing pattern sex-determining gene doublesex (Osdsx). We found Wolbachia...
Legionella spp. are ubiquitous bacteria principally found in water networks and ∼20 species implicated Legionnaire's disease. Among them, pneumophila is an intracellular pathogen of environmental protozoa, responsible for ∼90% cases the world. regulates part its virulence by a quorum sensing system named "Legionella sensing," composed signal synthase LqsA, two histidine kinase membrane receptors LqsS LqsT cytoplasmic receptor LqsR. To date, this communication was only L. pneumophila. Here,...
The endosymbiont Wolbachia feminises male isopods by making them refractory to the insulin-like masculinising hormone, which shunts autocrine development of androgenic glands. It was, therefore, proposed that silences IR receptors, either preventing their expression or inactivating them. We describe here two paralogs Armadillidium vulgare. They displayed a conventional structure and belonged family widespread among isopods. Av-IR1 an ubiquist expression, whereas Av-IR2 was restricted gonads....