what about in the we surround them map Stem-cell Genes That Help Form Plant Organs Identified?
ScienceDaily (Mar. 6, 2009) — Plant stem-cells are master cells located at the tip of the stem and are part of a structure called the shoot apical meristem (SAM). Here, the stem cells—all clumped together—divide throughout the life of the plant to give rise to other cells, resulting in the formation of above-ground organs such as leaves, flowers, branches and stem.But despite the important role the stem cells play in plant development, their molecular composition has eluded researchers for long. Now, working on Arabidopsis, a mustard-like plant that is a model for studying plant biology, a team of researchers at UC Riverside has identified all the genes expressed in the plant’s stem cells. The researchers also identified all the genes expressed in two other SAM cells: niche cells (which are located just beneath the stem cells and which provide signals that regulate the stem cells), and differentiating cells (which are generated by, and surround, the stem cells). The final product of th
