Is cell polarity under mechanical control in plants?

Cell polarity and tissue patterning in plants

Cell polarization is the specialization of developmental events along one orientation or one direction. Such polarization must be an early, essential stage of tissue patterning. The specification of orientation could not occur only at the level of the genetic system and it must express a coordination of events in many cells. There is a positive feedback relation between cell polarization and th...

Cell adhesion in plants is under the control of putative O-fucosyltransferases

Cell-to-cell adhesion in plants is mediated by the cell wall and the presence of a pectin-rich middle lamella. However, we know very little about how the plant actually controls and maintains cell adhesion during growth and development and how it deals with the dynamic cell wall remodeling that takes place. Here we investigate the molecular mechanisms that control cell adhesion in plants. We ca...

Polarity in plants pdf

Spatial segregation of polarity factors into distinct cortical clusters is required for cell polarity control

Cell polarity is regulated by evolutionarily conserved polarity factors whose precise higher-order organization at the cell cortex is largely unknown. Here we image frontally the cortex of live fission yeast cells using time-lapse and super-resolution microscopy. Interestingly, we find that polarity factors are organized in discrete cortical clusters resolvable to ~50-100 nm in size, which can ...

A cell line that is under control

3T3 cells were established after a temporary dip in reproductive ability (top); once established they entered a resting state at a low cell density (bottom). G RE EN George Todaro and Howard Green establish the 3T3 cell line— the first well behaved, contact-inhibited cell line. In this mess of uncontrolled growth it was difficult or impossible to pick out cells that had been transformed after i...