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Academic literature on the topic 'Communication microbienne'
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Journal articles on the topic "Communication microbienne"
Tran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes." L’annuaire du Collège de France, no. 112 (April 1, 2013): 890–94. http://dx.doi.org/10.4000/annuaire-cdf.1086.
Full textTran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes." L’annuaire du Collège de France, no. 114 (July 1, 2015): 1027–29. http://dx.doi.org/10.4000/annuaire-cdf.12072.
Full textNhieu, Guy Tran van. "Communication intercellulaire et infections microbiennes." L’annuaire du Collège de France, no. 115 (November 1, 2016): 913. http://dx.doi.org/10.4000/annuaire-cdf.12638.
Full textTran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes." L’annuaire du Collège de France, no. 113 (April 1, 2014): 944–47. http://dx.doi.org/10.4000/annuaire-cdf.2707.
Full textTran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes." L’annuaire du Collège de France, no. 109 (March 1, 2010): 1099–104. http://dx.doi.org/10.4000/annuaire-cdf.460.
Full textTran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes / Intercellular communication and microbial infections." L’annuaire du Collège de France, no. 116 (June 15, 2018): 657. http://dx.doi.org/10.4000/annuaire-cdf.13484.
Full textTran van Nhieu, Guy. "Communication intercellulaire et infections microbiennes / Intercellular communication and microbial infections." L’annuaire du Collège de France, no. 117 (September 1, 2019): 642–45. http://dx.doi.org/10.4000/annuaire-cdf.14779.
Full textTran Van Nhieu, Guy. "Communication intercellulaire et infections microbiennes / Intercellular communication and microbial infections." L’annuaire du Collège de France, no. 118 (December 30, 2020): 664–66. http://dx.doi.org/10.4000/annuaire-cdf.16163.
Full textStedman, Aline, Katja Brunner, and Giulia Nigro. "Decrypting the communication between microbes and the intestinal mucosa—A brief review on Pathogénie Microbienne Moléculaire's latest research." Cellular Microbiology 21, no. 11 (October 30, 2019). http://dx.doi.org/10.1111/cmi.13118.
Full textSbera, Roxana, Mihaela Badea, Liliana Rogozea, and Mihaela Idomir. "Contaminarea telefoanelor personalului medical și posibilitatea dezinfectării acestora | [Contamination of medical staff’s phones and the possibility of their disinfection]." Jurnal Medical Brasovean, April 19, 2021, 29–33. http://dx.doi.org/10.31926/jmb.2020.2.6.
Full textDissertations / Theses on the topic "Communication microbienne"
Bernard, Charles. "Réseaux de communication au sein de communautés microbiennes environnementales." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS010.
Full textQuorum sensing systems (QSSs) are genetic systems supporting cell-cell or bacteriophage-bacteriophage communication via the production and the detection of a signal molecule, the extracellular concentration of which reflects the density of the QSS-encoding population. QSSs have a prime importance in the regulation of key biological processes such as virulence, sporulation or biofilm formation in bacteria, conjugation in plasmids or lysogeny in temperate bacteriophages. However, the genetic diversity of QSSs remains largely underexplored and the same holds for the diversity of organisms, plasmids and viruses encoding these systems. Hence, many bacterial and viral density-dependent behaviors likely await to be discovered, some of which could perhaps transform our views of microbial adaptation and of the co-evolution between bacteria and their mobile genetic elements. Specifically, this PhD in evolutionary bioinformatics explores the phylogenetic and functional diversity of quorum sensing using genome and network analysis methods applied to genetic elements traditionally neglected by this research field: genomes of poorly known lineages such as CPRs and DPANNs, environmental metagenomes, viral genomes or plasmids. In particular, this thesis lays the theoretical foundations for the inference of communication networks within environmental microbial communities and includes the development of a new method allowing the identification of QSSs of the RRNPP type (Rap-Rgg-NprR-PlcR-PrgX) that are non-homologous to already known QSSs. This work notably reveals the first bilingual bacteriophages, i.e. encoding two QSSs belonging to different genetic families, as well as the first bacteriophages predicted to manipulate in a density-dependent manner the biology of their bacterial host
Ranava, David. "Etude d'un consortium microbien producteur d'hydrogène : de l'interaction inter-bactérienne au bioréacteur." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4700.
Full textIn nature microorganisms live in communities, in which the complementarity of their metabolism allows them to colonize less favourable ecological niches. Biodegradation of organic matter requires tight metabolic coupling between the different microorganisms involved, and constitutes an ideal model for studying the interactions between them, which are still not well established and require further characterization. Furthermore, deciphering the metabolic couplings established between the partners would allow optimization of this process for production of compounds of biotechnological interest, such as hydrogen. During the course of this work we have studied an artificial consortium constituted by Desulfovibris vulgaris Hildenborough sulphate-reducing bacterium, and Clostridium acetobutylicum a fermentative bacterium; both of them are found in natural consortia involved in biomass degradation. Microbiological, metabolic and microscopic approaches allowed us to show the existence of a physical interaction, with exchange of cytoplasmic molecules, between the two bacteria. This is associated with reorientation of the carbon flux in Clostridium acetobutylicum, resulting in increased hydrogen production. This behaviour is linked with the nutritional stress of D. vulgaris. Moreover, AI-2 type signal molecules produced in these conditions are crucial for the physical interaction between the two bacterial partners. An inhibitor produced by D. vulgaris in certain conditions has been discovered. This work has allowed us to acquire new knowledge about metabolic relations and physical interactions between bacteria involved in biomass degradation in a consortium
Vivant, Anne-Laure. "Persistance et adaptation de Listeria monocytogenes dans le sol : rôle du système de communication Agr." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS083/document.
Full textListeria monocytogenes is a ubiquitous bacterium responsible for listeriosis, a food-borne disease. This pathogen has been isolated from various environments of which the telluric environment. The presence of L. monocytogenes in soil can increase health hazards due to the risk of transfer to vegetables, animals and animal products and water. Considering the role of soil in the circulation of pathogens from farm environment to plant and animal products and eventually to foodstuff, it is critical to identify intrinsic and extrinsic factors that drive the fate of L. monocytogenes in soil. Genome-wide and transcriptomic analyses found that an important part of the genome of L. monocytogenes (7.3%) is dedicated to regulation including 209 transcriptional regulators. Among these, AgrA is the response regulator of the two component system AgrC/AgrA which is part of the Agr communication system. We investigated the role of AgrA for L. monocytogenes adaptation to soil. A ∆agrA mutant displayed significantly reduced survival in soil microcosms. Additionally, microarray analyses identified 386 genes and a large repertoire of ncRNA as differentially transcribed between the mutant and the parental strain. The results presented here suggest that AgrA may be critical for the adaptation of L. monocytogenes by regulating an important network of genes and ncRNAs.Moreover, co-inoculation of mutants of the Agr system with the parental strain showed that inactivation of the regulator AgrA resulted in a decrease of the fitness of the strain, confirming that AgrA is necessary for optimal L. monocytogenes adaptation. On the other hand, when co-cultured with the parental strain, the fitness of the ∆agrD mutant was not affected, indicating that the mutant ∆agrD took advantage of the parental strain.Soil biology is a major extrinsic factor that conditions the fate of L. monocytogenes populations in soil. Inactivation of microbial communities lifted growth inhibition. Experimental erosion of soil microbial diversity showed that highly diverse soil microbial communities act as a biological barrier against L. monocytogenes invasion and that phylogenetic composition of the community also has to be considered. These results suggest that erosion of diversity may have damaging effects regarding circulation of pathogenic microorganisms in the environment