US Patent:
20110047647, Feb 24, 2011
Inventors:
LU LIU - PALO ALTO CA, US
HOA GIANG - OAKLAND CA, US
DALE F. LOUSSAERT - CLIVE IA, US
HAIYIN WANG - JOHNSTON IA, US
Assignee:
PIONEER HI-BRED INTERNATIONAL, INC. - JOHNSTON IA
International Classification:
C12N 15/82
C07H 21/00
C12N 15/52
C12N 15/63
C12N 5/04
A01H 5/00
C07K 14/00
US Classification:
800287, 536 231, 536 232, 4353201, 435419, 800298, 800306, 8003201, 800312, 800322, 800320, 8003203, 800314, 8003202, 530350, 800288, 435468
Abstract:
The present invention provides methods and compositions relating to altering NT activity, nitrogen utilization efficiency and/or uptake in plants. The invention relates to a method for the production of plants with maintained or increased yield under low nitrogen fertility. The invention provides isolated nitrate transporter variant (NT variant) nucleic acids and their encoded proteins. The invention further provides recombinant expression cassettes, host cells, and transgenic plants. Plants transformed with nucleotide sequences encoding the NT variant enzyme show improved properties, for example, increased yield.