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INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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DOGIMONT Catherine

DR2 Inra - RESEARCHER - DIRECTOR

Dogimont
Equipe REDD

Main Scientific Interest

Genetics and genomics of most relevant horticultural traits in melon in the context of a sustainable agriculture

Pest and pathogen resistance genes and breeding for durable resistance

Sex determinism genes and melon reproduction

Natural diversity and evolutionary processes that shape the variability of agronomical traits in melon

Multiple approaches: diversity studies, mapping of genes and QTLs, positional cloning and functional characterization of genes relevant for agriculture, reverse genetics using an EMS melon population

 

Function

Head of the INRA research unit Genetics and Breeding of Fruit and Vegetables (GAFL), Avignon

Research activities in the team Resistance to pests and diseases, Diversity and Durability (ReDD)

Functional diversity and evolution of agronomical traits in melon, especially traits related to reproduction and to pest and disease resistance

Building of novel genetic combinations and sustainable rules for managing pest and pathogen evolution through host plant resistance

 

Coordinator of several research projects

Hubert Curien RILA France-Bulgaria (2019-2020) Genetic diversity and inheritance of sex and fruit characteristics in melon

Hubert Curien NAPATA France-Sudan (2017-2018) Enhancement of scientific cooperation to harness the genetic diversity of vegetable genetic resources in France and Sudan.

CASDAR MelOpen (2017-2020) Open the access to a new unexplored diversity for breeding novel resistances to soil diseases in melon

ANR Blanc MELODY project (2012-2016) Plant sex determination: functional characterization of the monoecy and gynoecy genes in Cucurbitaceae

INRA/seed companies MeliMlo Explore the natural and induced diversity of the Mlo genes to create a broad spectrum and sustainable resistance to powdery mildew in melon (2010-2016)

 

Partner of research projects

ANR EPISEX (2018-2021) Towards understanding the epigenetic control of sex determination in cucurbits

ANR SYSTERRA VirAphid project (2011-2015) Sustainable rules for managing virus and aphid evolution through host plant resistance, WP Leader.

 

Cursus

2018 Head of the INRA research unit Genetics and Breeding of Fruit and Vegetables (GAFL), Avignon

2011-2017 Team leader Resistance and reproduction in melon

2012, DR2 INRA UR GAFL, Avignon

2002-2010, Team leader Functional characterization of plant-pathogen interactions

1993-2011, INRA UR GAFL, Avignon, Chargée de Recherches, Genetics and functional characterization of agronomical genes in melon

1992, PhD in Plant Genetics and Pathology of Institut National Agronomique Paris-Grignon, Genetics of resistance to three unrelated viruses in pepper

1987, Master in Engineering, INA -PG, Paris, France, Master in Plant Genetics and Breeding

 

Most relevant results

Most relevant results are the positional cloning and the functional characterization of several resistance genes and genes involved in sex determination in melon:

-          the Vat gene, which confers resistance to the aphid Aphis gossypii and to unrelated viruses, when transmitted by this vector specifically. The gene encodes a CC-NBS-LRR protein. The interaction of the Vat protein with the aphid triggers both anti-aphid and antiviral plant defences.

-          the gene Prv, which confers resistance to Papaya ringspot potyvirus. It encodes a NBS-LRR gene with an unusual structure.

-          the recessive nsv gene corresponds to a single mutation in the translation initiation factor eIF4E.

-          the gene a is responsible for the andromonoecious sexual type in melon. A single substitution in an ethylene biosynthesis enzyme leads to the change of the floral type from monoecious (male and female on a single plant) to andromonoecious (male and hermaphrodite flowers on a single plant).

-          The gene g is responsible for gynoecious sex determination (only female flowers). It encodes a transcription factor required to suppress carpel development, which is epigenetically regulated.

Email : catherine.dogimont@inrae.fr