Search results for "Facteur de transcription"
showing 4 items of 4 documents
Etude de la régulation du facteur de transcription ATB2 chez Medicago truncatula
2013
Rapport de stage de Master 2 Spécialité Biologie Intégrative des Interactions Plantes, Microbes, Environnement BAP GEAPSI; Master; Climatic changes since more than a century combined with the urge for better crop yields due to a huge demographic growth and coupled with the need for a more sustainable agriculture led to a number of stresses for plants. Understanding them and their effect on growth, seed quality and seed production of plants is one of the most important agronomical issues of our time. We have chosen to study legumes because they are a major lipid and protein source, as both food and feed, and for their unique ability to absorb the atmospheric nitrogen via a symbiosis with Rhi…
Dissecting the factors controlling seed development in the model legume Medicago truncatula
2012
Legumes are not only indispensible for sustainable agriculture but are also a rich source of protein in food and feed for humans and animals, respectively. However, major proteins stored in legume seeds are poor in sulfur-containing amino acids, and may be accompanied by anti-nutritional factors causing low protein digestibility problems. In this regard, Medicago truncatula serves as a model legume to study legume seed development especially the phase of seed storage protein accumulation. As developing legume seeds are complex structures, a thorough knowledge of the morphogenesis of the seed and the characterization of regulatory mechanisms underlying the embryo development and seed filling…
Étude de la régulation transcriptionnelle des lymphocytes Th9
2017
CD4 helper T cells support a wide range of functions due to their ability to differentiate into different effector subsets depending on the antigen encountered and the cytokine environment in which they are. Current knowledge on the differentiation of helper T cells highlights the existence of complex transcriptional networks specific to each T helper subset. In 2008, IL-9 secreting CD4 T cells (Th9) are identified as a new helper T cell subtype. Differentiated in the presence of IL-4 and TGF-β, Th9 cells secrete IL-9 and IL-21, and contribute to the development of autoimmune and allergic diseases. Th9 lymphocytes also exhibit strong anti-tumor properties.The transcriptional network of the …
Regulatory networks underlying mycorrhizal development delineated by genome-wide expression profiling and functional analysis of the transcription fa…
2017
Background: Ectomycorrhizal (ECM) fungi develop a mutualistic symbiotic interaction with the roots of their host plants. During this process, they undergo a series of developmental transitions from the running hyphae in the rhizosphere to the coenocytic hyphae forming finger-like structures within the root apoplastic space. These transitions, which involve profound, symbiosis-associated metabolic changes, also entail a substantial transcriptome reprogramming with coordinated waves of differentially expressed genes. To date, little is known about the key transcriptional regulators driving these changes, and the aim of the present study was to delineate and functionally characterize the trans…