Control of inflorescence architecture in Antirrhinum.
Flowering plants exhibit two types of inflorescence architecture: determinate and indeterminate. The centroradialis mutation causes the normally indeterminate inflorescence of Antirrhinum to terminate in a flower. We show that centroradialis is expressed in the inflorescence apex a few days after floral induction, and interacts with the floral-meristem-identity gene floricaula to regulate flower position and morphology. The protein CEN is similar to animal proteins that associate with lipids and GTP-binding proteins. We propose a model for how different inflorescence structures may arise through the action and evolution of centroradialis.
Bradley
D
D
Genetics Department, John Innes Centre, Norwich, UK.
Carpenter
R
R
Copsey
L
L
Vincent
C
C
Rothstein
S
S
Coen
E
E
D000595:Amino Acid Sequence; D000727:Androgen-Binding Protein; D001483:Base Sequence; D002352:Carrier Proteins / Q000737:chemistry / Q000378:metabolism; D018744:DNA, Plant; D019204:GTP-Binding Proteins / Q000737:chemistry; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D008969:Molecular Sequence Data; D009154:Mutation; D010713:Phosphatidylcholines / Q000378:metabolism; D049294:Phospholipid Transfer Proteins; D063245:Plant Development; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D010944:Plants / Q000235:genetics*
D000727:Androgen-Binding Protein; C098219:CEN protein, Antirrhinum majus; D002352:Carrier Proteins; D018744:DNA, Plant; C083654:FLO protein, Antirrhinum majus; D010713:Phosphatidylcholines; D049294:Phospholipid Transfer Proteins; D010940:Plant Proteins; D019204:GTP-Binding Proteins