Search results for "BIOLOGIE CELLULAIRE"
showing 8 items of 8 documents
The Ectocarpus genome and the independent evolution of multicellularity in brown algae
2010
Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related. These seaweeds are the dominant species in rocky coastal ecosystems and they exhibit many interesting adaptations to these, often harsh, environments. Brown algae are also one of only a small number of eukaryotic lineages that have evolved complex multicellularity (Fig. 1). We report the 214 million base pair (Mbp) genome sequence of the filamentous seaweed Ectocarpus siliculosus (Dillwyn) Lyngbye, a model organism for brown algae, closely related to the kelps (Fig. 1). Genome features such as the presence of an extended set of…
La lutte biologique. Vers de nouveaux équilibres écologiques
2010
La sterilite male nucleo-cytoplasmique chez la feverole Vicia faba L. :2. Etude cytologique et biochimique de particules de type viral associees a la…
1982
National audience
Etude d'une sterilite male nucleo-cytoplasmique chez la feverole. Presence de particules cytoplasmiques contenant de l'ARN.
1981
National audience
RNA containing intracellular particles in cytoplasmic male sterile Faba bean.
1981
International audience
Cytoplasmic particles associated with CMS in Faba bean (Vicia faba L.)
1983
International audience
Asymétrie de la membrane plasmique végétale : caractérisation et rôle dans la signalisation immunitaire des plantes
2021
National audience; La membrane plasmique (MP) forme une barrière sélective entre la cellule et le milieu extérieur.C’est un senseur des modifications environnementales et une plateforme orchestrant latransduction du signal permettant de déployer une réponse adaptée. Elle joue donc un rôleessentiel dans la physiologie cellulaire. Décrypter les bases moléculaires de l’organisation dela MP apparaît donc nécessaire pour comprendre comment les plantes s’adaptent auxmodifications environnementales. La MP est une bicouche de lipides à laquelle des protéinessont associées, et les données accumulées sur ce modèle ont révélé son organisation complexeet dynamique et le rôle essentiel joué par les lipi…
New molecular aspects of regulation of mitochondrial activity by fenofibrate and fasting
2000
Abstract Fenofibrate and fasting are known to regulate several genes involved in lipid metabolism in a similar way. In this study measuring several mitochondrial enzyme activities, we demonstrate that, in contrast to citrate synthase and complex II, cytochrome c oxidase (COX) is a specific target of these two treatments. In mouse liver organelles, Western blot experiments indicated that mitochondrial levels of p43, a mitochondrial T3 receptor, and mitochondrial peroxisome proliferator activated receptor (mt-PPAR), previously described as a dimeric partner of p43 in the organelle, are increased by both fenofibrate and fasting. In addition, in PPARα-deficient mice, this influence was abolishe…