Nucleic acid molecules encoding echi-like polypeptides and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 5/00 (2006.01) C12N 15/29 (2006.01) C12N 15/60 (2006.01) C12N 15/61 (2006.01)

Patent

CA 2609079

Described herein are inventions in the field of genetic engineering of plants, including isolated nucleic acid molecules encoding putative peroxisomal enoyl CoA hydratase/isomerase (ECHI) to improve agronomic, horticultural, and quality traits. This invention relates generally to nucleic acid sequences encoding proteins that are related to the presence of seed storage compounds in plants. More specifically, the present invention relates to ECHI-like nucleic acid sequences encoding lipid metabolism proteins (LMP) and the use of these sequences in transgenic plants. In particular, the invention is directed to methods for manipulating fatty acid-related compounds and for increasing oil level and altering the fatty acid composition in plants and seeds. The invention further relates to methods of using these novel plant polypeptides to stimulate plant growth and/or to increase yield and/or composition of seed storage compounds..

La présente invention se rapporte au domaine de la modification génétique de végétaux, faisant intervenir des molécules d'acide nucléique isolées codant pour l'énoyl CoA hydratase/isomérase (ECHI) peroxisomale putative, pour apporter des améliorations du point de vue d l'agronomie, de l'horticulture et de la qualité. L'invention concerne de manière générale des séquences d'acide nucléique qui codent pour des protéines qui sont liées à la présence de composés de stockage de graines chez des végétaux. Plus spécifiquement, l'invention se rapporte à des séquences d'acide nucléique de type ECHI, codant pour des protéines du métabolisme des lipides (LMP), et l'utilisation de ces séquences dans des végétaux transgéniques. L'invention concerne en particulier des procédés pour modifier des composés liés aux acides gras, et pour augmenter les teneurs en huile et modifier la composition en acide gras de végétaux et de graines. L'invention a également pour objet des procédés pour utiliser ces nouveaux polypeptides végétaux pour stimuler la croissance végétale et/ou augmenter le rendement et/ou améliorer la composition de composés de stockage de graines.

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