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1. WO2020161352 - MOYENS ET PROCÉDÉS POUR AMÉLIORER LA CROISSANCE ET LE RENDEMENT DE PLANTES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

1. A purified bacterial strain for improving plant growth and/or yield, characterized in that, said strain comprises at least one 16S nucleotide sequence that is at least 95% identical to a sequence selected from the group consisting of SEQ ID NOs: 5, 1, 3, 4, 6, 10, 11, 13, 14, 15, 19, 21, or 29.

2. Purified bacterial strain according to claim 1, characterized in that, said strain comprises at least one 16S nucleotide sequence that is identical to a sequence selected from the group consisting of SEQ ID NOs: 5, 1, 3, 4, 6, 10, 11, 13, 14, 15, 19, 21, or 29.

3. Purified bacterial strain according to claim 1 or 2, characterized in that, said strain is deposited with the Polish Collection of Microorganisms, under the terms of the Budapest Treaty, respectively as Deposit ID: B/00196, B/00182, B/00184, B/00195, B/00197, B/00202, B/00203, B/00205, B/00206, B/00213, B/00207, B/00192, B/00178.

4. Abacterial population for improving plant growth and/or yield, wherein said bacterial population comprises at least one bacterial strain according to any of the previous claims 1 to 3.

5. Bacterial population according to claim 4, comprising two or more bacterial strains according to any of the previous claims 1 to 3.

6. A microbial active ingredient for improving plant growth and/or yield, characterized in that, said ingredient comprises one or more substances isolated from a bacterial culture comprising one or more bacterial strains according to any of the previous claims 1 to 3, or the bacterial population according to claim 4 or 5.

7. An agricultural active formulation comprising an agriculturally compatible carrier and one or more purified bacterial strains according to any of the previous claims 1 to 3 or the bacterial population according to claim 4 or 5 at a concentration of at least about 10L2 CFU/ml or spore/ml when said formulation is a liquid formulation or about 10L2 CFU/mg when said formulation is a non-liquid formulation.

8. A synthetic composition for improving plant growth and/or yield, wherein said composition comprises a plant element and a purified bacterial strain according to any of the previous claims 1 to 3 or bacterial population according to claim 4 or 5.

9. Use of the purified bacterial strain according to any of the previous claims 1 to 3, the bacterial population according to claim 4 or 5, the microbial active ingredient according to claim 6, the agricultural active formulation according to claim 7, or the synthetic composition according to claim 8 for improving plant growth and/or yield by improving a trait of agronomic importance in a plant.

10. Use of the strain, population, ingredient, formulation or composition according to claim 9 for improving plant growth and/or yield by effectively inhibiting the growth of a plant pathogen.

11. A method for conferring resistance to a plant pathogen infection in a plant, by means of treating said plant with one or more purified bacterial strains according to any of the previous claims 1 to 3, a bacterial population according to claim 4 or 5, a microbial active ingredient according to claim 6 or an agriculturally active formulation according to claim 4.

12. A method of improving plant growth and/or yield, comprising the step of treating a plant element with one or more purified bacterial strains according to any of the previous claims 1 to 3, abacterial population according to claim 4 or 5, or a microbial active ingredient according to claim 6 in an amount effective to increase the growth and/or yield in the plant derived from the treated plant element relative to a plant derived from a reference plant element.

13. A method of improving plant growth and/or yield, comprising the step of treating a plant element with a first bacterial strain and a second bacterial strain in an amount effective to increase the growth and/or yield in the plant derived from the treated plant element relative to a plant derived from a reference plant element, characterized in that, said first and second bacterial strain are conform the strains as described in any of the previous claims 1 to 3.

14. A method of improving plant growth and/or yield, comprising the steps of inoculating a plant growth medium with one or more purified bacterial strains according to any of the previous claims 1 to 3, a bacterial population according to claim 5, or a microbial active ingredient according to claim 6; and growing a plant in said medium.

15. A method of treating seeds of a plant to improve plant growth and/or yield, comprising mechanically or manually inoculating a plurality of plant seeds with an agricultural active formulation comprising an agriculturally acceptable carrier and one or more purified bacterial strains according to any of the previous claims 1 to 3, characterized in that, the seed is inoculated with said strain in an amount effective to colonize a plant germinated from the inoculated seed and to increase seed yield of a plant germinated from the inoculated seed as compared to a plant germinated from a reference seed grown and sowed under the same conditions.

16. A method according to claim 13, characterized in that, the seed of a plant is coated with the strain, cultured with the strain or planted near the strain such that the strain is able to colonize the seed.

17. A method of treating a plant element with a synthetic composition to improve plant growth and/or yield, wherein said method comprises the step of treating a plant element with one or more bacterial strains according to any of the previous claims 1 to 3, characterized in that, the bacterial strain is present in the composition in an amount capable of modulating at least one trait of agronomic importance in a plant selected from the group consisting of transcription of a gene, level of a transcript, the expression of a protein, level of a hormone, level of a metabolite, and population of endogenous microbes; in plants grown from said plant elements, as compared to reference plants grown from plant elements not treated with said composition.

18. A plant element, such as a seed, coated with the agricultural active formulation according to claim 7.