Transcriptional regulation of plant biomass and abiotic stress tolerance

A transgenic plant having increased tolerance to an abiotic stress, wherein said transgenic plant comprises a recombinant polynucleotide comprising a nucleotide sequence that encodes a member of the G1073 clade of transcription factor polypeptides;

• wherein the member of the G1073 clade of transcription factor polypeptides comprises:
• an AT-hook domain;
• and
• a second conserved domain comprising SEQ ID NO:
• 80 or SEQ ID NO:
• 81.

A method for producing a transformed plant with greater tolerance to an abiotic stress than a control plant, the method comprising:

• (a) providing an expression vector comprising a polynucleotide sequence encoding a member of the G1073 clade of transcription factor polypeptides;
• wherein the member of the G1073 clade of transcription factor polypeptides comprises an AT-hook domain and a second conserved domain, in order from N-terminal to C-terminal, wherein the second conserved domain comprises SEQ ID NO:
• 80 or SEQ ID NO:
• 81;
• and
• wherein the polynucleotide sequence is operably linked to a regulatory element that controls expression of the polynucleotide sequence;
• (b) transforming a target plant with the expression vector to produce the transformed plant;
• and
• (c) growing the transformed plant comprising the expression vector.

A transgenic plant having increased biomass, wherein said transgenic plant comprises a recombinant polynucleotide comprising a nucleotide sequence that encodes a member of the G1073 clade of transcription factor polypeptides;

• wherein the member of the G1073 clade of transcription factor polypeptides comprises:
• an AT-hook domain;
• and
• a second conserved domain comprising SEQ ID NO:
• 80 or SEQ ID NO:
• 81.

A method for producing a transformed plant with greater biomass than a control plant, the method comprising:

• (a) providing an expression vector comprising a polynucleotide sequence encoding a member of the G1073 clade of transcription factor polypeptides;
• wherein the member of the G1073 clade of transcription factor polypeptides comprises an AT-hook domain and a second conserved domain, in order from N-terminal to C-terminal, wherein the second conserved domain comprises SEQ ID NO:
• 80 or SEQ ID NO:
• 81;
• and
• wherein the polynucleotide sequence is operably linked to a regulatory element that controls expression of the polynucleotide sequence;
• (b) transforming a target plant with the expression vector to produce the transformed plant;
• and
• (c) growing the transformed plant comprising the expression vector.