Maize with enhanced tolerance to fungal pathogen
AssigneeBiogemma
InventorsChristophe Tatout, Bruno Grezes-Besset, Pierre George
Life of this patent
Estimating the term…
Abstract
The present invention relates to the field of the improvement of the tolerance of maize to fungal pathogens and in particular to fusariosis by the qualitative and/or quantitative modification of the lignin biosynthesis pathway.
Claims7
A method for increasing tolerance to a fungal pathogen in maize comprising qualitatively and/or quantitatively altering the synthesis of lignins, by total or partial inhibition of the expression of a gene coding for the cinnamoyl CoA reductase (CCR) involved in the lignin biosynthesis pathway, the tolerance to said fungal pathogen being increased relative to a non-altered maize.
A method for obtaining a maize exhibiting tolerance to fungal pathogens, by the introgression of the allele Δ3 318 into said maize, said maize containing the allele Δ3318 exhibiting increased tolerance to fungal pathogens relative to a maize not containing said allele, comprising:
- (a) crossing a first maize line exhibiting the allele Δ3318 with a second maize line not exhibiting said allele,
- (b) genotyping the progeny obtained and selecting the progeny exhibiting the allele Δ3318, and having the best genome ratio as regards said second maize line,
- (c) back-crossing said progeny with said elite second maize line utilizable for the production of hybrids,
- (d) repeating steps b) and c) if necessary until an isogenic line of said second maize containing the allele Δ3318 is obtained,
- (e) optionally, performing self-fertilization in order to obtain a plant homozygotic for the allele Δ3318.
Dependencies are inferred from the claim text.