Isopentenyl transferase sequences and methods of use

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) C12N 9/10 (2006.01) C12N 15/54 (2006.01)

Patent

CA 2580761

Methods and compositions for modulating plant development are provided. Polynucleotide sequences and amino acid sequences encoding isopentenyl transferase (IPT) polypeptides are provided. The sequences can be used in a variety of methods including modulating root development, modulating floral development, modulating leaf and/or shoot development, modulating senescence, modulating seed size and/or weight, and modulating tolerance of plants to abiotic stress. Polynucleotides comprising an IPT promoter are also provided. The promoter can be used to regulate expression of a sequence of interest. Transformed plants, plant cell, tissues, and seed are also provided.

La présente invention a trait à des procédés et des compositions pour la modulation de développement de plantes. L'invention a trait à des séquences de polynucléotides et des séquences d'acides nucléiques codant pour des polypeptides d'isopentényle transférase. Les séquences peuvent être utilisées dans divers procédés comprenant la modulation du développement radiculaire, la modulation du développement floral, la modulation du développement foliaire et/ou du système foliacé, la modulation de la sénescence, la modulation de la taille et/ou du poids des graines, et la modulation de la tolérance de plantes au stress abiotique. L'invention a également trait à des polynucléotides comportant un promoteur d'isopentényle transférase. Le promoteur peut être utilisé pour la régulation de l'expression d'une séquence d'intérêt. L'invention a trait en outre à des plantes, des cellules de plantes, des tissus, et des graines transformés.

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