... that the loss of multicellularity caused by the suppression of GGB or ROP GTPases is due to uncoordinated cell expansion, defects in cell wall integrity and the disturbance of the directional control of cell plate orientation. Expressing prenylatable ROP in the ggb mutant not only rescues multicellularity...

... microscope or a Carl Zeiss LSM510 META confocal laser microscope. To estimate the initiation of endocycling and cell expansion in the root meristem, three to six confocal optical sections, which were collected at approximately 1-μm intervals using identical confocal settings, were merged. Surface areas...

... such as pavement cells. Further phenotypic analysis of scd1-1 indicated a role for SCD1 in seedling growth, root elongation and flower morphogenesis. More severe scd1 T-DNA insertion alleles ( scd1-2 and scd1-3 ) markedly affect polar cell expansion, most notably in trichomes and root hairs. SCD1 is a unique gene...

... ). Cell expansion is a complex process involving the cytoskeleton, cell wall degradation and synthesis enzymes and the proteins that are needed to target them to the site of expansion. Thus, it is likely that trichome branch formation involves multiple proteins acting together at the site of branch...

... for correspondence (e-mail: annes@uidaho.edu ) 11 11 1997 17 12 1997 © 1998 by Company of Biologists 1998 Leaf development Maize Cell division Cell expansion warty-1 Plants elaborate leaves in a repeatable, consistent fashion yet different leaf forms are thought...

...Marie-Theres Hauser; Atsushi Morikami; Philip N. Benfey ABSTRACT Regulation of cell expansion is essential to the formation of plant organs. We have characterized 21 mutations, representing six loci, that cause abnormal cell expansion in the root of Arabidopsis thaliana . The phenotype...

... alterations in post-embryonic root development. The short-root mutation results in a change from indeterminate to determinate root growth and the loss of internal root cell layers. The cobra and lion’s tail mutations cause abnormal root cell expansion which is conditional upon the rate of root growth...