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. Author manuscript; available in PMC: 2015 May 19.
Published in final edited form as: Curr Biol. 2014 May 19;24(10):R475–R483. doi: 10.1016/j.cub.2014.03.014

Figure 2. Mechanical stress dependent feedback loops regulate microtubule organization at the shoot apical meristem.

Figure 2

A. Maximum intensity projection of an Arabidopsis shoot apical meristem having a dome shaped central domain which gives rise to floral primordia along the periphery. Meristem dome has isotropic distribution of stresses represented by a circle, whereas the boundary domain cells have anisotropic stresses (boxed enclosure).

B. Shell element model showing stress pattern in different regions of SAM. Note that stress is strongly anisotropic in boundary region between primordium and SAM apex.

C. Microtubule organization in the shoot apical meristem showing random organization of microtubules in the center of the dome, and cells at the boundary domain having microtubules parallel along the long axis of the cell. Scale bars 50 μm