Papers by Sophie Trouvelot
Recherche d’éliciteurs inducteurs de résistance chez les plantes : application en phytoprotection
HAL (Le Centre pour la Communication Scientifique Directe), Oct 29, 2013
Dépérissement de la vigne … mais que fait la recherche ?
HAL (Le Centre pour la Communication Scientifique Directe), Dec 5, 2017
Effets des micro-doses de sucre chez la vigne en conditions contrôlées
HAL (Le Centre pour la Communication Scientifique Directe), Apr 10, 2019
National audienc
Dépérissements du 161-49C _ Influence de l'alimentation potassique et azotée
HAL (Le Centre pour la Communication Scientifique Directe), Sep 2, 2020
Obtention et caractérisation, phénotypique et génotypique,de mutants de la souche Fusarium oxysporum Fo47,affectés dans leur aptitude antagoniste
Biological control of Fusarium wilts can be achieved by using nonpathogenic strains of F. Oxyspor... more Biological control of Fusarium wilts can be achieved by using nonpathogenic strains of F. Oxysporum selected for their antagonistic effect against pathogenic formae speciales. Three major mechanisms are generally reported, which may be present within the same biocontrol strain : competition for nutrients; competition for infection sites and root colonisation; induced systemic resistance. However, the determinism of these modes of action is unknown. The objectives of this work was to analyse the mechanisms implicated in the antagonistic activity of the strain Fo47 and to identify genes involved in this process. In this way, we decided to produce mutants impaired in their antagonistic activity, then to characterise them molecularly and phenotypically. Having no hypothesis about genes involved in this process, we opted for a so-called "black box" approach. We choose a transposon-mediated insertional mutagenesis strategy. In our work, we used the Fot1 element because Fo47 have no endogenous copy of this transposon. Thanks to this method, we obtained 12 mutants which were significantly affected in their biocontrol activity and 2 were characterized with different approaches : molecular, proteomic, saprophytic and in interaction with the host plant.
Influence de l’alimentation potassique et azotée sur le dépérissement du porte-greffe 161-49C
HAL (Le Centre pour la Communication Scientifique Directe), Dec 10, 2019
Dose effective du laboratoire au vignoble et pulvérisation adaptée
HAL (Le Centre pour la Communication Scientifique Directe), Feb 28, 2019
National audienc
Présentation du projet Aptitude : alimentation porte-greffe & déperissement
HAL (Le Centre pour la Communication Scientifique Directe), Mar 22, 2019
National audienc
Apport de la cytologie pour décrire et comprendre les dépérissements de la vigne
HAL (Le Centre pour la Communication Scientifique Directe), Jun 15, 2023
We would like to thank referee 2 for their constructive comments. Below are the specific replies ... more We would like to thank referee 2 for their constructive comments. Below are the specific replies to each comment. Attached is a document showing the changes to the original manuscript resulting from the answers to referee 1 and 2.
Vers un diagnostic de l’holobionte « vigne »
HAL (Le Centre pour la Communication Scientifique Directe), Jan 9, 2020
National audienc
BMC Plant Biology, 2018
Background: Floral induction is an important stage in the apple tree life cycle. In 'Nagafu No. 2... more Background: Floral induction is an important stage in the apple tree life cycle. In 'Nagafu No. 2', which was derived from a 'Fuji' bud sport, flower bud formation is associated with serious problems, such as fewer and inferior flower buds, a long juvenile phase, and an alternate bearing phenotype. Moreover, the molecular regulatory mechanisms underlying apple floral induction remain unknown. To characterize these mechanisms, we compared the RNA-sequencing-based transcriptome profiles of buds during floral induction in profusely flowering 'Qinguan' and weakly flowering 'Nagafu No. 2' apple varieties. Results: Genes differentially expressed between the buds of the two varieties were mainly related to carbohydrate, fatty acid, and lipid pathways. Additionally, the steady up-regulated expression of genes related to the fatty acid and lipid pathways and the down-regulated expression of starch synthesis-related genes in the carbon metabolic pathway of 'Qinguan' relative to 'Nagafu No. 2' were observed to contribute to the higher flowering rate of 'Qinguan'. Additionally, global gene expression profiling revealed that genes related to cytokinin, indole-3-acetic acid, and gibberellin synthesis, signalling, and responses (i.e., factors contributing to cell division and differentiation and bud growth) were significantly differentially expressed between the two varieties. The up-regulated expression of genes involved in abscisic acid and salicylic acid biosynthesis via shikimate pathways as well as jasmonic acid production through fatty acid pathways in 'Qinguan' buds were also revealed to contribute to the floral induction and relatively high flowering rate of this variety. The differential expression of transcription factor genes (i.e., SPL, bZIP, IDD, and MYB genes) involved in multiple biological processes was also observed to play key roles in floral induction. Finally, important flowering genes (i.e., FT, FD, and AFL) were significantly more highly expressed in 'Qinguan' buds than in 'Nagafu No. 2' buds during floral induction. Conclusions: A complex genetic network of regulatory mechanisms involving carbohydrate, fatty acid, lipid, and hormone pathways may mediate the induction of apple tree flowering.
«Pinot, père et fils»
HAL (Le Centre pour la Communication Scientifique Directe), Oct 2, 2014
National audienc
Le microbiote de la vigne : de nouveaux paradigmes et une perspective pour la vigne de demain
HAL (Le Centre pour la Communication Scientifique Directe), 2018
Prod 2018-253a SPE EA BIOmE IPM INRA UBNational audienc
A combined use of biostimulants and resistance inducers to improve wheat protection
HAL (Le Centre pour la Communication Scientifique Directe), May 23, 2017
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), May 25, 2016
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Biocontrôle et pulvérisation
HAL (Le Centre pour la Communication Scientifique Directe), Nov 24, 2020
Mieux comprendre le dépérissement du 161-49C
HAL (Le Centre pour la Communication Scientifique Directe), May 6, 2021
Cytological aspects of oligosaccharide-induced resistance against Plasmopara viticola in grapevine
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Papers by Sophie Trouvelot