Isolated nucleic acid molecules encoding the Br2 P-glycoprotein of maize and methods of modifying growth in plants transformed therewith

An expression cassette comprising a nucleic acid molecule operably linked to a promoter that drives expression in a plant cell, wherein said nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of:

• (a) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 1;
• (b) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 2;
• (c) a nucleotide sequence encoding a variant of the amino acid sequence set forth in SEQ ID NO:
• 3, wherein said variant has at least 90% amino acid sequence identity to the amino acid sequence set forth in SEQ ID NO:
• 3;
• and
• (d) a nucleotide sequence that is fully complementary to the nucleotide sequence of any one of (a)-(c);
• wherein said nucleotide sequence encodes a P-glycoprotein that controls plant height or said nucleotide sequence is complementary to a nucleotide sequence that encodes said P-glycoprotein.

A transformed plant cell having stably incorporated into its genome a nucleic acid molecule operably linked to a promoter that drives expression in a plant cell, wherein said nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of:

• (a) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 1;
• (b) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 2;
• (c) a nucleotide sequence encoding a variant of the amino acid sequence set forth in SEQ ID NO:
• 3, wherein said variant has at least 90% amino acid sequence identity to the amino acid sequence set forth in SEQ ID NO:
• 3;
• and
• (d) a nucleotide sequence that is fully complementary to the nucleotide sequence of any one of (a)-(c);
• wherein said nucleotide sequence encodes a P-glycoprotein that controls plant height or said nucleotide sequence is complementary to a nucleotide sequence that encodes said P-glycoprotein.

A transformed plant having stably incorporated into its genome a nucleic acid molecule operably linked to a promoter that drives expression in a plant cell, wherein said nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of:

• (a) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 1;
• (b) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 2;
• (c) a nucleotide sequence encoding a variant of the amino acid sequence set forth in SEQ ID NO:
• 3, wherein said variant has at least 90% amino acid sequence identity to the amino acid sequence set forth in SEQ ID NO:
• 3;
• and
• (d) a nucleotide sequence that is fully complementary to the nucleotide sequence of any one of (a)-(c);
• wherein said nucleotide sequence encodes a P-glycoprotein that controls plant height or said nucleotide sequence is complementary to a nucleotide sequence that encodes said P-glycoprotein.

A transformed seed of a transformed plant, said transformed plant having stably incorporated into its genome a nucleic acid molecule operably linked to a promoter that drives expression in a plant cell, wherein said nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of:

• (a) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 1;
• (b) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 2;
• (c) a nucleotide sequence encoding a variant of the amino acid sequence set forth in SEQ ID NO:
• 3, wherein said variant has at least 90% amino acid sequence identity to the amino acid sequence set forth in SEQ ID NO:
• 3;
• and
• (d) a nucleotide sequence that is fully complementary to the nucleotide sequence of any one of (a)-(c);
• wherein said nucleotide sequence encodes a P-glycoprotein that controls plant height or said nucleotide sequence is complementary to a nucleotide sequence that encodes said P-glycoprotein and wherein said seed comprises said nucleic acid molecule operably linked to said promoter.

A method for modifying the growth of a plant, said method comprising transforming a plant with a nucleic acid molecule operably linked to a promoter that drives the expression of said nucleic acid molecule in said plant, wherein said nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of:

• (a) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 1;
• (b) a nucleotide sequence having at least 95% nucleotide sequence identity to the nucleotide sequence set forth in SEQ ID NO:
• 2;
• (c) a nucleotide sequence encoding a variant of the amino acid sequence set forth in SEQ ID NO:
• 3, wherein said variant has at least 90% amino acid sequence identity to the amino acid sequence set forth in SEQ ID NO:
• 3;
• and
• (d) a nucleotide sequence that is fully complementary to the nucleotide sequence of any one of (a)-(c);
• wherein said nucleotide sequence encodes a P-glycoprotein that controls plant height or said nucleotide sequence is complementary to a nucleotide sequence that encodes said P-glycoprotein and wherein the height of the transformed plant is reduced or increased when compared to an untransformed plant.