Expression of globin proteins in plants

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/31 (2006.01) A01H 5/00 (2006.01) C07K 14/805 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2266626

The present invention relates to genetic-engineering of plants for enhanced oxygen assimilation and utilization. More particularly, this invention relates to producing transgenic plants engineered to express globin proteins such as, for example, hemoglobin, myoglobin, and hemoproteins. The engineered plants of the invention achieve quicker germination, are faster growing or maturing crops, produce higher crop yields, and/or contain higher levels of desired plant metabolites, particularly alkaloids. The invention also relates to mutant Vitreoscilla hemoglobin proteins, polynucleotides encoding the same, and host cells containing such polynucleotides.

La présente invention concerne l'obtention par génie génétique de plantes destinées à une assimilation et une utilisation améliorée de l'oxygène. Plus particulièrement, cette invention concerne la production de plantes transgéniques élaborées génétiquement pour exprimer des protéines globines telles que, par exemple, l'hémoglobine, la myoglobine et des hémoprotéines. Les plantes élaborées génétiquement de l'invention parviennent à une germination plus rapide, fournissent des récoltes à croissance ou maturation plus rapide, elles produisent des rendements de récoltes supérieurs et/ou contiennent des niveaux plus élevés de métabolites végétaux voulus, notamment des alcaloïdes. L'invention concerne également des protéines hémoglobines Vitreoscilla mutantes, des polynucléotides les codant ainsi que des cellules hôtes contenant ces polynucléotides.

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