PLANTS - Plant scientists unravel a molecular switch to stimulate leaf growth

Cell division is essential for growth and development of all multicellular organisms. In plants, leaf growth consists of two different phases. A first phase is characterized by intense cell division, which leads to the formation of many new cells. During the second phase, cell division activity declines, the cells elongate and acquire a certain expertise. Biologists have now identified a molecular switch that stimulates leaf growth ...

http://www.sciencedaily.com/releases/2014/01/140124082604.ht