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6. Genetic diversity and population structure in Vitis species illustrate phylogeographic patterns in eastern North America

Author

Péros, Jean‐Pierre, primary, Cousins, Peter, additional, Launay, Amandine, additional, Cubry, Philippe, additional, Walker, Andy, additional, Prado, Emilce, additional, Peressotti, Elisa, additional, Wiedemann‐Merdinoglu, Sabine, additional, Laucou, Valérie, additional, Merdinoglu, Didier, additional, This, Patrice, additional, Boursiquot, Jean‐Michel, additional, and Doligez, Agnès, additional

Published
2021
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10. Résistance de la vigne au mildiou : Approche métabolomique sur 3 facteurs de résistance

Author

Poutaraud Naidenov, Anne, Gros, Clémence, Negrel, Lise, Prado, Emilce, Schneider, Christophe Joseph, Merdinoglu-Wiedemann, Sabine, Baltenweck-Guyot, Raymonde, Hugueney, Philippe, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, and Université de Strasbourg (UNISTRA)

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2013

11. Apports de la sélection assistée par marqueurs dans la création de variétés de vigne à résistance plurigénique au mildiou et à l’oïdium

Author

Prado, Emilce, Schneider, Christophe Joseph, Blasi, Paule, Merdinoglu-Wiedemann, Sabine, Onimus, Christine, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), and Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2013

12. Exploitation des résistances naturelles aux maladies cryptogamiques pour une viticulture à faibles intrants phytosanitaires - Perspectives pour les vignobles septentrionaux

Author

Schneider, Christophe Joseph, Prado, Emilce, Onimus, Christine, Ley, Lionel, Forget, Dominique, Barbeau, Gérard, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Service d'expérimentation agronomique et viticole (COLM AGRO VITI UE), Institut National de la Recherche Agronomique (INRA), Domaine expérimental viticole de Bordeaux (BORDEAUX DOMAINE EXP VITICOLE), and Unité expérimentale vigne et vin

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS, [SHS]Humanities and Social Sciences
Abstract

National audience

Published
2013

13. Approche métabolomique de la résistance de la vigne au mildiou

Author

Gros, Clémence, Poutaraud Naidenov, Anne, Prado, Emilce, Schneider, Christophe Joseph, Merdinoglu-Wiedemann, Sabine, Baltenweck-Guyot, Raymonde, Hugueney, Philippe, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, and Université de Strasbourg (UNISTRA)

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2013

14. CARACTERIZACIÓN DE LA CASCADA DE REACCIONES DE DEFENSA INDUCIDA POR LA INOCULACIÓN CON Plasmopara vitícola EN PLANTAS DE VID QUE POSEEN EL QTL DE RESISTENCIA RPV1

Author

Prado, Emilce, Peressotti, Elisa, Poutaraud Naidenov, Anne, Schmidlin, Laure, Merdinoglu-Wiedemann, Sabine, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), and Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

15. CREACIÓN DE VARIEDADES DE VID RESISTENTES A PATÓGENOS CRIPTOGÁMICOS

Author

Prado, Emilce, Schneider, Christophe Joseph, Merdinoglu-Wiedemann, Sabine, Poutaraud Naidenov, Anne, Onimus, Christine, Peressotti, Elisa, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, and SciELO.

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

16. Construction of a reference linkage map of Vitis amurensis and genetic mapping of Rpv8, a locus conferring resistance to grapevine downy mildew

Author

Blanc, Sophie, Blasi, Paule, Merdinoglu-Wiedemann, Sabine, Prado, Emilce, Mestre Artigues, Pedro-Felipe, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), and Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I

Subjects
[SDV]Life Sciences [q-bio]
Abstract

Construction of a reference linkage map of Vitis amurensis and genetic mapping of Rpv8, a locus conferring resistance to grapevine downy mildew. Ecole chercheurs "Génomique et Diversité des Caractères à déterminisme complexe"

Published
2011

17. Genetic structure and linkage disequilibrium in 4 Vitis species

Author

Nicolas, Stephane, Peros, Jean-Pierre, This, Patrice, Lacombe, Thierry, Laucou, Valerie, Le Cunff, Loic, Boursiquot, Jean-Michel, Dereeper, Alexis, Merdinoglu, Didier, Coste, P., Prado, Emilce, Siberchicot, Aurélie, Cierco-Ayrolles, Christine, Mangin, Brigitte, Eibach, R., Walker, A., Cousins, P., Doligez, Agnès, Diversité et adaptation des plantes cultivées (UMR DIAPC), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Institut National de la Recherche Agronomique (INRA), Unité de Biométrie et Intelligence Artificielle (UBIA), Julius Kühn-Institut (JKI), Department of Viticulture and Enology, University of California [Davis] (UC Davis), University of California-University of California, and United States Department of Agriculture (USDA)

Subjects
[SDV]Life Sciences [q-bio], fungi, food and beverages, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [INFO]Computer Science [cs], [MATH]Mathematics [math]
Abstract

International audience; To answer the new challenges faced by viticulture, grapevine breeding major goal is to create new cultivars integrating both resistance against pathogens and adaptation to climatic changes while still offering high quality final products. These traits have to be accumulated from different sources, several Vitis species for resistance to biotic and abiotic stresses and V. vinifera for quality. Compared to other crops, the genetic bases of the variability of these complex traits are still poorly understood in grapevine, in particular because searching for QTLs in perennial woody species is very long, tedious and costly. Applying association genetics at the whole genome scale (genome-scan) will permit to more rapidly and efficiently identify the main genetic factors underlying the variation of agronomically important traits, by taking advantage of the high variability and recombinations accumulated within the available genetic resources. Precise knowledge of the structure of genetic diversity and linkage disequilibrium (LD) in study samples is crucial to design and perform association genetics studies. The DLVitis project aims at producing this knowledge for 4 Vitis species of interest to breeding, V. vinifera and 3 american species, V. riparia, V. cinerea and V. aestivalis. Its main objectives are : - to characterize the structure of genetic diversity within populations of the 3 American species - to characterize LD between SNPs in 4 genomic regions of 2 Mb each, in 4 samples of V. vinifera and 1 population of each of the 3 American species to locally test genome-scan for two traits, resistance to downy mildew and berry size.

Published
2010

18. Breeding for durable resistance to downy and powdery mildews in grapevine

Author

Merdinoglu, Didier, Blasi, Paule, Merdinoglu-Wiedemann, Sabine, Mestre Artigues, Pedro-Felipe, Peressotti, Elisa, Prado, Emilce, Schneider, Christophe Joseph, International Society for Horticultural Science, ., Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, International Society for Horticultural Science, and Partenaires INRAE

Subjects
fongicide, [SDV]Life Sciences [q-bio], parasite, vigne, grape, pathogen, fungicides, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2010

19. QTL of flavanoid synthesis and resistance to Plasmopara viticola

Author

Poutaraud Naidenov, Anne, Hamm, Gregory, Prado, Emilce, Massot, Clara, Merdinoglu-Wiedemann, Sabine, Coste-Heinrich, Pascale, Carré, Vincent, Müller, Jean-François, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, and Université Paul Verlaine - Metz (UPVM)

Subjects
PLASMOPARA VITICOLA, QTL, [SDV]Life Sciences [q-bio], GRAPEVINE, FLAVONOIDS, ComputingMilieux_MISCELLANEOUS, RESISTANCE
Abstract

International audience

Published
2010

20. Genetic analysis of the resistance to downy and powdery mildews derived from cultivar Bronner

Author

Blasi, Paule, Schnee, Sylvain, Wiedemann-Merdinoglu, Sabine, Prado, Emilce, Godard, S., Coste-Heinrich, Pascale, Onimus, Christine, Gindro, K., Schneider, Christophe Joseph, Viret, O., Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Unité Mixte de Recherche en Santé Végétale (INRA/ENITA) (UMRSV), Institut National de la Recherche Agronomique (INRA)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut des Sciences de la Vigne et du Vin (ISVV), and Agroscope

Subjects
résistance aux maladies, POWDERY MILDEWS, [SDV]Life Sciences [q-bio], GENETIC ANALYSIS, RESISTANCE, DOWNY MILDEWS, FUNGICIDE, GRAPEVINE DISEASES, MUSCADINIA ROTUNDIFOLIA, CV. BRONNER, champignon phytopathogène, vitis vinifera, mildiou, vigne, ComputingMilieux_MISCELLANEOUS, cultivar
Abstract

National audience

Published
2010

21. QTL of stilbene synthesis and resistance to Plasmopara viticola

Author

Poutaraud Naidenov, Anne, Prado, Emilce, Debayle, Delphine, Coste-Heinrich, Pascale, Massot, Clara, Merdinoglu-Wiedemann, Sabine, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Institut de biologie moléculaire des plantes (IBMP), and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)

Subjects
PHYTOALEXINS, PLASMOPARA VITICOLA, MUSCADINIA ROTUNDIFOLIA, [SDV]Life Sciences [q-bio], food and beverages, STILBENE
Abstract

International audience; Secondary metabolites are known to be involved in the interaction between plants and pathogens (1). Some of them are highly suspected to contribute to resistance against fungi, such as stilbenes (2, 3). Stilbenes are the main phytoalexins in grapevine (4). Downy mildew (Plasmopara viticola, Oomycetes) causes huge damage in vineyards. So the creation of new varieties is expected to reduce phytochemical applications. These varieties will be obtained by the pyramiding of complementary resistance genes. Thereby, a better knowledge of the effect of these genes on the plant response is important to acquire. Two populations derived from the American species Muscadinia rotundifolia and previously phenotyped for their resistance to downy mildew were studied for their ability to synthesize stilbenes. The first population called 41528 possesses two major resistance genes: Rpv1 which slows down the progression of the pathogen in the leaves and Rpv2 which blocks it at a very early stage. The second population 41524 contains only Rpv1. Mocked and inoculated leaves were studied on about 100 genotypes of each the two populations. One to three plants were studied per genotype. Leaves of level 5 (level 1 corresponded to the first spread leaf at the top of the stem) and 6 were harvested. Level 6 was inoculated with Plasmopara viticola. Leaf discs were sampled at 4 days post infection (dpi) and 5 dpi then extracted with MeOH at 60°C. Stilbenes (piceid cis and trans, resveratrol, viniferins delta and epsilon, pterostilbene) were analyzed with HPLC-DAD and in some cases with HPLC-mass spectrometry (MS-MS). The sum of 6 stilbenes and pterostilbene contents were highly correlated between 4 and 5 dpi (R2 respectively of 0.7 and 0.84); showing a linear activity of stilbene synthase and O-methyl transferase after infection during that period. Quantitative trait loci (QTL) were found for the different molecules studied. In population 41528, a stilbene synthesis QTL found on chromosome 18 co-segregated with Rpv2. Nevertheless, stilbene contents were higher in susceptible genotypes than in the resistant ones. In contrast, in population 41524, a stilbene synthesis QTL co-segregated on chromosome 12 with Rpv1 and their syntheses were positively correlated with the level of resistance.(5)

Published
2010

22. Analyse génétique de la résistance au mildiou et à l’oïdium de la vigne issue de la variété Bronner

Author

Blasi, Paule, Prado, Emilce, Merdinoglu-Wiedemann, Sabine, Coste-Heinrich, Pascale, Onimus, Christine, Schneider, Christophe Joseph, Merdinoglu, Didier, Schnee, Sylvain, Godard, Sophie, Gindro, Katia, Viret, Olivier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Agroscope, and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], CV. BRONNER
Abstract

National audience; La viticulture représente une composante importante de l'économie française. Cependant, la vigne est une espèce qui nécessite de très nombreux traitements phytosanitaires, notamment pour contrôler le mildiou (Plasmopara viticola) et l’oïdium (Erisyphe necator). L’un des enjeux majeurs est donc la maîtrise des applications de produits phytosanitaires, tout en maintenant une haute exigence sur la qualité du produit. La création de variétés de vigne résistantes constitue une des voies pour répondre à cet enjeu. Toutes les variétés traditionnelles de vigne, appartenant à l'espèce Vitis vinifera, sont sensibles à P. viticola et E. necator. En revanche, diverses sources de résistance ont été décrites dans les espèces de Vitis d'origine américaine et asiatique dont quelques unes ont déjà été utilisées pour créer de nouvelles variétés résistantes. La variété Bronner est une de ces nouvelles variétés qui présente des caractéristiques culturales et oenologiques ainsi une résistance au mildiou et à l’oïdium de bon niveau, ce que en fait un géniteur intéressant dans les programmes de sélection en cours. La connaissance des bases génétiques des résistances est un pré-requis pour optimiser le processus de création variétale. Une descendance de la variété Bronner a été créée pour étudier le déterminisme génétique de la résistance au mildiou et à l’oïdium. Une carte génétique partielle couvrant 560 cM a été établie à l’aide de 80 marqueurs microsatellites analysés sur un échantillon de 94 individus. Le niveau de résistance au mildiou et à l’oïdium des ces individus a été, en parallèle, évalué après inoculation artificielle à l'aide de paramètres qualitatifs et quantitatifs. L’ensemble des données obtenues a permis de mettre en évidence un QTL majeur de résistance partielle au mildiou et deux QTLs mineurs de résistance à l’oïdium.

Published
2009

23. Création de variétés de vigne à résistance durable au mildiou et à l'oïdium et aptes à la productionde vins de qualité

Author

Schneider, Christophe Joseph, Onimus, Christine, Forget, Dominique, Barbeau, Gérard, Clipet, Christophe, Maginieau, Christian, Wiedemann-Merdinoglu, Sabine, Prado, Emilce, Merdinoglu, Didier, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I, Domaine expérimental viticole de Bordeaux (BORDEAUX DOMAINE EXP VITICOLE), Institut National de la Recherche Agronomique (INRA), Unité expérimentale vigne et vin, Domaine expérimental du Chapître (MONTP DO CHAPITRE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Service d'expérimentation agronomique et viticole (COLM AGRO VITI UE)

Subjects
résistance aux maladies, génotypage, mildiou, qtl, GENES DE RESISTANCE, [SDV]Life Sciences [q-bio], vigne, sélection variétale, oïdium, ComputingMilieux_MISCELLANEOUS, [SHS]Humanities and Social Sciences
Abstract

National audience

Published
2006

24. Integrated karyotyping in Pisum sativum and Medicago truncatula by FISH

Author

Darmency, Mona, Schelysheva, Ludmilla, Pouthier, Thomas, Prado, Emilce, ProdInra, Migration, UMR 0102 - Unité de Recherche Génétique et Ecophysiologie des Légumineuses, Génétique et Ecophysiologie des Légumineuses à Graines (UMRLEG) (UMR 102), Etablissement National d'Enseignement Supérieur Agronomique de Dijon (ENESAD)-Institut National de la Recherche Agronomique (INRA)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Etablissement National d'Enseignement Supérieur Agronomique de Dijon (ENESAD)-Institut National de la Recherche Agronomique (INRA)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Santé de la vigne et qualité du vin (SVQV), and Institut National de la Recherche Agronomique (INRA)-Université Louis Pasteur - Strasbourg I

Subjects
CYTOGENETIC, [SDV] Life Sciences [q-bio], [SDE] Environmental Sciences, FISH, [SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, INTEGRATED KARYOTYPING, HETEROCHROMATIN DISTRIBUTION, CARTOGRAPHIE GENETIQUE, MEDICAGO TRUNCATULA, ComputingMilieux_MISCELLANEOUS, GENETIC MAPPING
Abstract

National audience

Published
2004

25. Analyse du génome et gestion des ressources génétiques forestières Ed. 1

Author

Prat, Daniel, Faivre Rampant, Patricia, Prado, Emilce, Prat, Daniel, Prat, Daniel, Faivre Rampant, Patricia, Prado, Emilce, and Prat, Daniel

Abstract

Les marqueurs génétiques sont largement utilisés pour estimer le polymorphisme et prédire l’évolution des populations végétales. L’avancée dans la connaissance du génome des plantes a favorisé le développement de marqueurs moléculaires ciblant une région de l’un des génomes nucléaire, chloroplastique et mitochondrial. Le développement de la génomique donne accès aux gènes contrôlant des caractères adaptatifs, très importants pour la gestion des ressources génétiques. Cet ouvrage est d’un intérêt plus général que celui des arbres forestiers ; il présente les principales méthodes d’analyse du génome, ainsi que la plupart des marqueurs moléculaires et leurs caractéristiques.

Published
2006

28. Grapevine fanleaf disease: simple solution for complex problem?

Author

Djennane, Samia, Prado, Emilce, Dumas, Vincent, Demangeat, Gérard, Gersch, Sophie, Alais, Anne, Gertz, Claude, Beuve, Monique, Velt, Amandine, Rustenholz, Camille, Lemaire, Olivier, and Merdinoglu, Didier

Subjects
GRAPE diseases & pests, GRAPES, PLANT resistance to viruses, GENETIC determinism, NATURAL immunity, GERMPLASM, VIRUS diseases
Abstract

Grapevine fanleaf disease, caused by grapevine fanleaf virus (GFLV) and transmitted by the soilborne nematode Xiphinema index, is the most detrimental of the grapevine viral diseases. It provokes severe symptoms and economic losses, threatening vineyards worldwide. Many strategies of control based on prophylaxis, biotechnology, biocontrol have been explored. So far, no effective and environmentally friendly solution has been reached. Natural resistance to GFLV has equally been examined but, in the most comprehensive screening study, none of the tested accessions were found to be resistant. As recessive genetic determinisms have often been described for plant virus resistance, the challenges of finding a source of natural resistance to GFLV may be explained by the high rate of heterozygosity in grapevine. We investigated the presence of recessive resistance to GFLV in grapevine genetic resources through the screening of the progenies from self-fertilization of various varieties and species. We discovered that the Riesling variety displays resistance to GFLV, although it is susceptible to X. index. This resistance is determined by a single recessive factor located on grapevine chromosome 1, which we have named resistance to grapevine fanleaf virus 1 (rgflv1). rgflv1 is located in a 5.7 cM interval which represents a physical distance of ~1.1 Mb. Analysis of recombinant allowed us to narrow the interval to a region of 600 kb encompassing 57 genes. To our knowledge, this is the first and only instance of resistance to grapevine fanleaf virus identified in grapevine so far. This finding represents strong basement to go further in the identification and the characterization of the gene underlying the rgflv1 resistance locus. In terms of innovation, it paves the way for the design of new ideotypes of multi-resistant grape varieties that combine resistance to root and aerial major diseases. [ABSTRACT FROM AUTHOR]

Published
2022

29. A Stress-Inducible Resveratrol O-Methyltransferase Involved in the Biosynthesis of Pterostilbene 1 in Grapevine.

Author

Schmidlin, Laure, Poutaraud, Anne, Claudel, Patricia, Mestre, Pere, Prado, Emilce, Santos-Rosa, Maria, Wiedemann-Merdinoglu, Sabine, Karst, Francis, Merdinoglu, Didier, and Hugueney, Philippe

Subjects
RESVERATROL, GRAPES, METHYLTRANSFERASES, PHYTOALEXINS, GENE expression, ESCHERICHIA coli, BACTERIAL genetics, PHYSIOLOGY
Abstract

Stilbenes are considered the most important phytoalexin group in grapevine ( Vitis vinifera) and they are known to contribute to the protection against various pathogens. The main stilbenes in grapevine are resveratrol and its derivatives and, among these, pterostilbene has recently attracted much attention due both to its antifungal and pharmacological properties. Indeed, pterostilbene is 5 to 10 times more fungitoxic than resveratrol in vitro and recent studies have shown that pterostilbene exhibits anticancer, hypolipidemic, and antidiabetic properties. A candidate gene approach was used to identify a grapevine resveratrol O-methyltransferase (ROMT) cDNA and the activity of the corresponding protein was characterized after expression in Escherichia coli. Transient coexpression of ROMT and grapevine stilbene synthase in tobacco (Nicotiana benthamiana) using the agroinfiltration technique resulted in the accumulation of pterostilbene in tobacco tissues. Taken together, these results showed that ROMT was able to catalyze the biosynthesis of pterostilbene from resveratrol both in vitro and in planta. ROMT gene expression in grapevine leaves was induced by different stresses, including downy mildew (Plasmapara viticola) infection, ultraviolet light, and AlCl3 treatment. [ABSTRACT FROM AUTHOR]

Published
2008
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30. Discovery of a locus associated with susceptibility to esca in grapevine.

Author

Arnold G, Prado E, Dumas V, Butterlin G, Duchêne É, Merdinoglu D, and Avia K

Abstract

Esca is the most destructive and predominant of grapevine trunk disease. The chronic infections and vine mortality caused by esca syndrome leads to huge economic losses and threatens the sustainability of vineyards worldwide. Esca is caused by numerous wood-decay and wood-decay associated fungi, but its full etiology remains unclear due to the grapevine trunk disease complex, making effective control methods challenging. As differences in esca susceptibility have already been observed among grapevine varieties, we investigated the presence of genetic factors that can explain theses variations using a Riesling x Gewurztraminer progeny. Thanks to the destructive phenotyping of a 16-year-old vineyard plot, we discovered that the Gewurztraminer variety carries on chromosome 1 a locus linked to variations in trunk necrosis associated with esca, which we have named Esca Necrosis Susceptibility 1 (ENS1). Our study also suggests that there is a partial link between trunk vigor and necrosis due to esca. To our best knowledge, ENS1 is the first instance of genetic factor identified as involved in the limitation of necrosis associated to grapevine esca. While the identification of ENS1 alone may not provide a complete resolution of the issue, this discovery nonetheless represents a first step towards a genetic solution and paves the way for broader genetic investigations in the future.

Published
2025
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