Use of genes encoding outward potassium channels for modifying at least one phenotype linked to the size and organic acid content of at least one plant storage organ

摘要

Process for producing a plant (A), transformed with respect to the phenotype of storage organ size, comprises modifying expression of the gene (I) that encodes a potassium channel (KC) in the cells of the storage organ or of the tissue that feeds it. Independent claims are also included for the following: (1) transformed cell or plant produced by the new method; (2) marker (M) of a gene involved in the phenotype of storage organ size; (3) nucleotide primer (NP) for selecting plants or cells that overexpress (M); (4) method for selecting plants according to storage organ size by measuring expression of a KC gene in the organ (or its feeder tissue); (5) plant cell, or plant, that overexpresses an (M); (6) antibody (Ab) directed against (part of) the polypeptide (X) encoded by a KC gene; (7) method for detecting (part of ) (X); and (8) kit, for detecting (part of) (X), that contains an Ab.