Abstract
IDD proteins belong to a plant-specific transcription factor family that is defined by a highly conserved ID domain (IDD), which includes four zinc fingers. Arabidopsis and rice have 15 and 16 IDD genes, respectively, and maize is expected to have more than 21 genes. Among them, biological functions of only a few genes have been reported: maize INDETERMINATE1(ID1)and rice OsId1, which regulate flowering and Arabidopsis SGR5 which is involved in an early event in shoot gravitropism. Rcently, Arabidopsis IDD genes, JACKDAW and MAGPIE were reported to interact with GRAS protein, SHORT-ROOT(SHR)and SCARECROW(SCR)to control radial patterning and maintenance of stem cell in root.
In this study, we analyzed protein-protein interaction between IDD proteins and GRAS proteins (SHR and SCR), to investigate functions of IDD families in root development.
