Liste des publications scientifiques

Abscisic acid promotes pre-emergence stages of lateral root development in Medicago truncatula

17/12/2014 00:00
Anne-Alicia Gonzalez, Kokoévi Agbévénou, Violaine Herrbach, Clare Gough and Sandra Bensmihen   Résumé: The plant root system is important for plant anchorage and nutrition. Among the different characteristics of the root system, root branching is a major factor of plasticity and adaptation to changing environments. Indeed, many biotic and abiotic stresses, such as drought or symbiotic interactions, influence root branching. Many studies concerning root development and root branching were...

Medicago truncatula symbiosis mutants affected in the interaction with a biotrophic root pathogen

11/12/2014 00:00
Thomas Rey, Abhishek Chatterjee, Margaux Buttay, Justine Toulotte and Sebastian Schornack   Résumé: Understanding how plants balance between enabling microbial symbionts and fending off pathogens has direct implications both for basic plant biology and optimal use of crop plants in agriculture. The degree to which the processes associated with these two types of interactions overlap is poorly known. Recent studies revealed that symbiotic and pathogenic filamentous microbes require common...

The sunflower downy mildew pathogen Plasmopara halstedii

04/12/2014 00:00
Quentin Gascuel, Yves Martinez, Marie-Claude Boniface, Felicity Vear, Magalie Pichon and Laurence Godiard   Résumé: Downy mildew of sunflower is caused by Plasmopara halstedii (Farlow) Berlese & de Toni. Plasmopara halstedii is an obligate biotrophic oomycete pathogen that attacks annual Helianthus species and cultivated sunflower, Helianthus annuus. Depending on the sunflower developmental stage at which infection occurs, the characteristic symptoms range from young seedling death,...

A novel bioinformatics pipeline to discover genes related to arbuscular mycorrhizal symbiosis based on their evolutionary conservation pattern among higher plants

03/12/2014 23:03
Patrick Favre, Laure Bapaume, Eligio Bossolini, Mauro Delorenzi, Laurent Falquet and Didier Reinhardt   Résumé: Genes involved in arbuscular mycorrhizal (AM) symbiosis have been identified primarily by mutant screens, followed by identification of the mutated genes (forward genetics). In addition, a number of AM-related genes has been identified by their AM-related expression patterns, and their function has subsequently been elucidated by knock-down or knock-out approaches (reverse...

Gordon research conference on photosynthesis: from evolution of fundamental mechanisms to radical re-engineering

26/11/2014 00:00
Fabrice Rappaport, Alizée Malnoë, Govindjee   Résumé: We provide here a News Report on the 2014 Gordon Research Conference on Photosynthesis, with the subtitle “From Evolution of Fundamental Mechanisms to Radical Re-Engineering.” It was held at Mount Snow Resort, West Dover, Vermont, during August 10–15, 2014. After the formal sessions ended, four young scientists (Ute Ambruster of USA; Han Bao of USA; Nicoletta Liguori of the Netherlands; and Anat Shperberg-Avni of Israel) were recognized...

Distinct roles of the photosystem II protein PsbS and zeaxanthin in the regulation of light harvesting in plants revealed by fluorescence lifetime snapshots

24/11/2014 18:36
Emily J. Sylak-Glassman, Alizée Malnoë, Eleonora De Re, Matthew D. Brooks, Alexandra Lee Fischer, Krishna K. Niyogi, and Graham R. Fleming   Résumé: The photosystem II (PSII) protein PsbS and the enzyme violaxanthin deepoxidase (VDE) are known to influence the dynamics of energy-dependent quenching (qE), the component of nonphotochemical quenching (NPQ) that allows plants to respond to fast fluctuations in light intensity. Although the absence of PsbS and VDE has been shown to change the...

The Role of Water Channel Proteins in Facilitating Recovery of Leaf Hydraulic Conductance from Water Stress in Populus trichocarpa

18/11/2014 10:11
Joan Laur, Uwe G. Hacke   Résumé: Gas exchange is constrained by the whole-plant hydraulic conductance (Kplant). Leaves account for an important fraction of Kplant and may therefore represent a major determinant of plant productivity. Leaf hydraulic conductance (Kleaf) decreases with increasing water stress, which is due to xylem embolism in leaf veins and/or the properties of the extra-xylary pathway. Water flow through living tissues is facilitated and regulated by water channel proteins...

Plant hormone signalling through the eye of the mass spectrometer

18/11/2014 00:00
Alan Walton, Elisabeth Stes,Ive De Smet, Sofie Goormachtig and Kris Gevaert   Résumé: Plant growth and development are regulated by hormones and the associated signalling pathways share several common steps, the first being the detection of the signal by receptor proteins. This typically leads to conformational changes in the receptor, thereby modifying its spectrum of interaction partners. Next, secondary signals are transmitted via rapid post-translational cascades, such as targeted...

Analyse des effecteurs Crinklers (CRN) de l'oomycète Aphanomyces euteiches

29/10/2014 00:00
Diana Ramirez Garces   Résumé: L'oomycète Aphanomyces euteiches est un pathogène racinaire de légumineuses cultivées (pois, luzerne ...) et de la plante modèle Medicago truncatula. Les oomycètes, comme d'autres microorganismes pathogènes eucaryotes, secrètent et transloquent des molécules à l'intérieur des cellules de l'hôte (effecteurs intracellulaires/cytoplasmiques) dans le but de manipuler les fonctions de la plante et de faciliter l'infection. Les protéines CRN (Crinkling and...

Improved Genome Editing in Human Cell Lines Using the CRISPR Method

10/10/2014 00:00
Ivan M. Munoz, Piotr Szyniarowski, Rachel Toth, John Rouse, Christophe Lachaud   Résumé: The Cas9/CRISPR system has become a popular choice for genome editing. In this system, binding of a single guide (sg) RNA to a cognate genomic sequence enables the Cas9 nuclease to induce a double-strand break at that locus. This break is next repaired by an error-prone mechanism, leading to mutation and gene disruption. In this study we describe a range of refinements of the method, including stable...
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