...Thomas E. Hughes; Jane A. Langdale ABSTRACT The flexible deployment of developmental regulators is an increasingly appreciated aspect of plant development and evolution. The GRAS transcription factor SCARECROW (SCR) regulates the development of the endodermis in Arabidopsis and maize roots...

...) and mesophyll (outer) cells. Here, we demonstrate that, in the C 4 monocot maize, Kranz patterning is regulated by redundant function of SCARECROW 1 (ZmSCR1) and a previously uncharacterized homeologue: ZmSCR1h. ZmSCR1 and ZmSCR1h transcripts accumulate in ground meristem cells of developing leaf primordia...

... transition. QC precursor cells originated from the outer layer of stage II lateral root primordia, within which the SCARECROW ( SCR ) transcription factor was specifically expressed. Disrupting SCR function abolished periclinal divisions in this lateral root primordia cell layer and perturbed the formation...

... root, the plant-specific GRAS family transcription factors SHORT-ROOT (SHR) and SCARECROW (SCR) are key regulators of root growth and of the asymmetric cell divisions that separate the ground tissue into two separate layers: the endodermis and cortex. To elucidate the role of SHR in root development...

... organization mutants such as scarecrow, short-root and fass ( Scheres et al., 1995 ) and the meristem activation mutant rml-1 , ( Cheng et al., 1995 ) in which a similar defect is seen in both primary and lateral roots. However, the alf-3 and alf-4 mutant phenotypes appear only in the lateral root...

... divisions within the root meristem. The root meristem, in turn, is laid down during embryogenesis. We have analysed six mutations causing alterations in the radial organisation of the root. Embryonic phenotypes resulting from wooden leg, gollum, pinocchio, scarecrow, shortroot and fass mutations...