... embryogenesis highlights the role of MUM, an unknown maternal message, in the control of growth axes and tissue patterning in kelp embryos. Algae Body axes Cell division orientation Embryogenesis Maternal signalling Tissue patterning Conseil Régional de Bretagne http://dx.doi.org/10.13039...

... correlated, suggesting that elongation changes (due to stress changes) through mitosis are affecting the OCD. To understand better how local changes in stresses affect cell division orientation, we next investigated on a by cell basis whether and when compression during mitosis can re-orient the OCD...

... created by the histoblasts contributes to the formation of the adult epidermis. Finally, we show that histoblasts occasionally undergo apoptosis. * Author for correspondence (e-mail: [email protected] ) 19 5 2009 © 2009. 2009 Morphogenesis Cell migration Cell division orientation...

... cell division orientation in cells that divide predominantly in the anticlinal plane. Dosage analysis of Xcl1 reveals that the mutant phenotype is caused by overproduction of a normal gene product. This allows cells that have already received differentiation signals to continue to divide in aberrant...