How rice plants tell head from toe during early growth

Scientists from Tokyo Metropolitan University have uncovered how fertilized rice seeds begin to divide and establish their "body axis." Using a new imaging method, they discovered that while the first cell divides in an asymmetric way initially, this is followed by random growth and the apparently "collective" determination of a body axis. This is a significant break with known pathways, a rare glimpse into the birth and growth of plant embryos.