Transgenic plants with increased seed yield, biomass and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) C12N 9/12 (2006.01)

Patent

CA 2401504

This invention provides methods for producing plants with increased seed and biomass production. More specifically, this invention provides methods for producing plants which have increased yields for a number of plant traits, including seed number, seed weight, the number of seed heads, flag leaf weight and total plant weight. This invention also provides methods for improving the Harvest Index of a plant. In a preferred embodiment, the methods comprise introducing into a plant a nucleic acid wherein the nucleic acid is selected from the group consisting of a nucleic acid comprising SEQ ID NO: 3, a nucleic acid which hybridizes with SEQ ID NO: 3 under high stringency conditions and encodes a polypeptide that retains biological activity of SH2-REV6-HS, a fragment of SEQ ID NO: 3 encoding a peptide that retains biological activity of SH2-REV6-HS, a nucleic acid encoding a polypeptide comprising SEQ ID NO: 4, or a fragment thereof that retains biological activity of SH2-REV6-HS, and a nucleic acid encoding an SH2HS or an SH2RTS polypeptide. The present invention also concerns plants obtained by the methods provided herein.

La présente invention concerne des procédés de production de plantes ayant une production de semences et de biomasse améliorée. La présente invention concerne plus particulièrement des procédés de production de plantes ayant un rendement amélioré concernant un certain nombre de caractéristiques de plante, notamment le nombre de semences, le poids des semences, le nombre de têtes de semence, le poids des dernières feuilles et le poids total de la plante. La présente invention concerne également des procédés permettant d'améliorer l'indice de récolte d'une plante. Dans un mode de réalisation préféré de cette invention, les procédés consistent à introduire dans une plante un acide nucléique choisi dans le groupe formé par un acide nucléique comprenant SEQ ID NO: 3, un acide nucléique s'hybridant avec SEQ ID NO: 3 dans des conditions de rigueur élevée et codant un polypeptide qui conserve l'activité biologique de SH2-REV6-HS, un fragment de SEQ ID NO: 3 codant un peptide qui conserve l'activité biologique de SH2-REV6-HS, un acide nucléique codant un polypeptide comprenant SEQ ID NO: 4 ou un fragment de SEQ ID NO: 4 qui conserve l'activité biologique de SH2-REV6-HS, et un acide nucléique codant un polypeptide SH2HS ou un polypeptide SH2RTS. La présente invention concerne également des plantes obtenues selon lesdits procédés.

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