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Durable Resistance in Solanaceae - Résistance Durable chez les Solanacées (RDS)

The use of resistant cultivars proved successful for many years in protecting crops against many diseases. Joined with organic practices it also provides a safe alternative to several pesticides, alternative which is encouraged in the present agro-ecological context. The main limits in the genetic control of plant diseases are:

- Our knowledge of genetic resources. A large reservoir of resistance genes is available in germplasm collections particularly if you consider quantitative resistance,. But few resistance alleles have been commercially exploited and their modes of action in the plant-pathogen interactions are poorly known.

- The durability of the resistance. In many cases the plant pathogen populations progressively adapt to resistant cultivars and break down the resistance, making the plant protection inefficient after several years of cultivar deployment.

 Our research focuses on 3 objectives:

+ Exploring the diversity of genetic resistance factors against plant pathogens, with special emphasis on quantitative resistance.

+ Unravelling the molecular and functional determinants of these plant-pathogen interactions, and their co-evolution history.

+ Predicting the risks of resistance breakdown by pathogen to promote plant breeding and cultivar deployment strategies that increase resistance durability.

 Our targets:

Solanaceous crops include a variety of vegetables, ornamentals and smokable species. We focus our research on the solanaceous vegetables, pepper, eggplant, tomato and potato, which are cultivated worldwide over 28 millions ha, (40% of the world surface dedicated to vegetables and potatoes), and the viruses, oomycetes and nematodes pathogens shared by these vegetables.




Logo INRA-GAFL Rédaction : GAFL
Dernière mise à jour : 03/01/2012