Herbicide-tolerant protoporphyrinogen oxidase

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 5/00 (2006.01) C12N 9/02 (2006.01)

Patent

CA 2381927

The present invention provides novel DNA sequences coding for protoporphyrinogen oxidase (protox) enzymes from soybean, wheat, cotton, sugar beet, oilseed rape, rice, sorghum, and sugar cane. In addition, the present invention teaches modified forms of protox enzymes that are herbicide tolerant. Plants expressing herbicide tolerant protox enzymes taught herein are also provided. These plants may be engineered for resistance to protox inhibitors via mutation of the native protox gene to a resistant form or they may be transformed with a gene encoding a herbicide tolerant form of a plant protox enzyme.

L'invention concerne de nouvelles séquences ADN codant des enzymes d'oxydase protoporphyrinogène (protox) de soja, de coton, de betterave à sucre, de colza, de riz, de sorgho et de canne à sucre. L'invention concerne également des formes modifiées d'enzymes protox qui tolèrent les herbicides. L'invention concerne également des plantes exprimant des enzymes protox qui tolèrent les herbicides. Ces plantes peuvent être modifiées, de manière à résister aux inhibiteurs protox par le biais de la mutation d'un gène protox d'origine en une forme résistante ou encore, ces plantes peuvent être transformées avec un gène codant une forme tolérant les herbicides d'enzyme protox de plante.

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