Search results for "Cripto"
showing 10 items of 863 documents
Towards a cell-specific expression atlas of arbuscular mycorrhizal roots in the model legume Medicago truncatula
2007
International audience
Highlighting the role of diversity in driving weed dynamics and weed-crop interactions
2017
SPEBIOME INRA; Le Microscope à Dissection Laser (MDL) est composé de l’association d’un microscope équipé d’objectifs permettant un grossissement x2 à x100 et d’un système optique de découpe laser. Il permet de microdisséquer de façon ciblée des échantillons biologiques, de type bactérien, animal ou végétal. Sa finesse de dissection permet de sélectionner, d’isoler puis de récupérer des cellules cibles afin de concentrer le matériel. Ainsi, il est possible de réaliser des analyses de transcriptomique, de génomique ou de protéomique à partir de cellules cibles. Avant de microdisséquer, la préparation des échantillons est primordiale pour s’assurer de récupérer une qualité et une quantité suf…
Muscle Transcriptomic Investigation of Late Fetal Development and Determinism of Maturity at Birth in Two Extreme Breeds: Meishan and Large White
2014
Measuring vine leaf roughness by image processing
2013
International audience; In precision spraying, spray application efficiency depends on the pesticide application method, the phytosanitary product as well as the leaf surface properties. For environmental and economic reasons, the global trend is to reduce the pesticide application rate of the few approved active substances. Under these constraints, one of the challenges is to improve the efficiency of pesticide application. Different parameters can influence on pesticide application as nozzle types, liquid viscosity and leaf surface. Specific models have been developed showing that the predominant factor for the leaf is the leaf roughness, because it is related on adhesion mechanisms of li…
Transcriptomes of compatible and non-compatible gray mold/grapevine interactions compared in search of resistance factors
2012
National audience; Gray mold (Botrytis cinerea) causes significant annual yield and quality losses to viticulture. Comparison of transcriptomes of compatible and non-compatible interaction with Vitis vinifera cv Marselan – on harvesting stage berries or véraison stage berries, respectively – suggest the jasmonic acid pathway is activated in the former, while the salicylic acid pathway is more pronounced in the latter. In addition, in the non-compatible case, reactive oxygen species accumulation seems to be both early and strong, and some genes involved in cell-wall reinforcement are up-regulated.
Evolution de la résistance aux herbicides chez l’Ambroisie (Ambrosia artemisiifolia) : recherche des déterminismes génétiques et application au diagn…
2019
National audience; Ce projet de thèse considère une plante adventice particulièrement problématique : l’Ambroisie à feuilles d’armoise (Ambrosia artemisiifolia), une espèce impactant à la fois la production agricole et la santé publique (pollen très allergisant et allergénique). Les inhibiteurs de l’acétolactate synthase (ALS), une famille d’herbicides, représentent aujourd’hui le levier le plus efficace pour le contrôle de cette adventice dans les parcelles agricoles. Cependant, des résistances à ces herbicides ont été identifiées chez l’Ambroisie, entrainant des échecs de traitements. Les données disponibles montrent la présence de résistance liée à la cible (mutations structurales de l’A…
Characterisation of rye-grass (Lolium sp.) transcriptome-wide response to ALS-inhibiting herbicides
2014
International audience; Non-target-site-resistance (NTSR) to herbicides is a major cause for failure in the chemical control of a number of weeds, and is especially widespread and important in grass weeds. Although several gene families have been shown to be involved in NTSR (cytochromes p450, glutathione-S-transferases, glycosyl-transferases, ABC transporters, esterases…), the genetic determinants of NTSR are still poorly known to date. NTSR is part of the response of weeds to herbicides. To unravel NTSR, it is thus of interest to firstly characterise the processes involved in herbicide stress response in grasses. For this purpose, we implemented a comparative whole-transcriptome sequencin…
Identification de mécanismes de résistance non liée à la cible grâce à la transcriptomique
2013
We have witnessed a dramatic increase in the number of weeds showing herbicide resistance during the past three decades. The potentially most dangerous mechanisms of resistance endows Non-Target-Site based Resistance (NTSR): NTSR is polygenic, unpredictable and can confer cross-resistance to herbicides with different modes of action. High throughput sequencing methods, like RNA sequencing (RNA-seq), are particularly effective to identify genes differentially expressed between two experimental modalities. Therefore, RNA sequencing was implemented to identify genes involved in NTSR to clodinafop (an ACCase inhibitor) in black-grass. Black-grass transcriptome was sequenced from 4 sensitive pla…
Un facteur de transcription impliqué dans le développement de la graine chez Medicago truncatula
2013
Population genetics on Ambrosia genus: past, present and future
2014
National audience; A new Task Force within the COST-SMARTER has recently been created. This group is composed of population genetics experts from five European countries in charge of focusing on “Genetics on Ambrosia” (Austria, France, Germany, Hungary, Sweden). Their mission was to review molecular methods used in published genetics studies on common ragweed and to discuss about future projects. Two different types of molecular markers are generally used in the literature to investigate the genetic structure within and between introduced and/or native populations of common ragweed: microsatellite markers and amplified fragment length polymorphism (AFLP). These methods permit the researcher…