Institut National De La Recherche Agronomique

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement

Raphaël Mercier

Laurence Cromer

Mathilde Seguela-Arnaud

Isabelle D'Erfurth

Marta Cifuentes

Wayne Crismani

Chloé Girard

The invention relates to a method for increasing the frequency of meiotic recombination in plants, by inhibiting the RECQ4 or TOP3A protein, especially by mutagenesis or extinction of the RECQ4 or TOP3A gene coding for said protein. The invention can be used especially in the field of plant breeding and genetic mapping.

Increase in meiotic recombination in plants by inhibiting an RECQ4 or TOP3A protein of the RTR complex

The invention relates to a dominant mutation in the TDM gene leading to the production of 2n gametes in plants, to the plants comprising said mutation, and to their use in plant breeding. The invention relates also to plants in which the dominant mutation in the TDM gene is combined with the inactivation of a gene involved in meiotic recombination in plants and a gene involved in the monopolar orientation of the kinetochores during meiosis. These plants which produce apomeiotic gametes are also useful in plant breeding.

Dominant mutation in thegene leading to diplogametes production in plants

Growing community of inventors

Fontenay le Fleury, France

Raphaël Mercier