Patent ID: 8802928

Claim:
A method for increasing biomass and/or seed yield under conditions of reduced nitrogen availability in a plant relative to a corresponding control plant, comprising: (a) introducing and expressing in a plant a nucleic acid encoding a NAP1-like polypeptide, wherein the NAP1-like polypeptide comprises a NAP domain comprising the amino acid sequence of SEQ ID NO: 33 and SEQ ID NO: 34, and wherein said nucleic acid comprises: (i) a nucleic acid sequence encoding a polypeptide comprising an amino acid sequence having at least 80% sequence identity to the amino acid sequence of SEQ ID NO: 2; or (ii) a nucleic acid sequence capable of hybridising with the complementary nucleotide sequence of the nucleic acid sequence of SEQ ID NO: 1, under stringent hybridization conditions comprising hybridization at 65° C. in 1×SSC or at 42° C. in 1×SSC and 50% formamide, followed by washing at 65° C. in 0.3×SSC; and b) selecting for a plant having increased biomass and/or seed yield under conditions of reduced nitrogen availability relative to a corresponding control plant.