LAUSR

Polarity is at the core of plant development, as well as that of other multicellular organisms since polarization acts as a driving force to generate a variety of specialized cells. Therefore, unraveling how cells establish polarity is the most fundamental issue toward understanding the principles of plant morphogenesis. Cell polarity coordinated within the plane of a single tissue layer is particularly termed “planar polarity (also termed planar cell polarity),” which offers an experimentally accessible model system. Therefore, planar polarity is studied in various multicellular organisms. In the animal kingdom, polarized arrangement of ommatidia and bristles in Drosophila melanogaster and the orientation of hair follicles in mammalian skin are well-known examples of planar polarity.