Figure 1
From: Transcriptome analysis highlights nuclear control of chloroplast development in the shoot apex
The vegetative shoot apex of tomato. (a) Illustration of the vegetative shoot apex, which is comprised of the shoot apical meristem (SAM) and leaf primordia (LP). The central zone (CZ) of the SAM contains stem cells that give rise to all of the aerial parts of the plant. Surrounding the CZ is the peripheral zone (PZ), from which leaf organs are formed. The three clonal layers of the SAM (L1, L2, L3), which generate the different tissues of the leaf, are also marked. (b) Chlorophyll fluorescence image of the SAM and young leaf primordium. (c,d) A typical section of the shoot apex before (c) and after (d) being subjected to laser capture microdissection, to isolate the chlorophyll-less region of the SAM CZ (yellow outline), the PZ, in which chlorophyll fluorescence becomes visible (green outline), and tissue of the LP which harbors still more developed chloroplasts (red outline). For better visibility, the original software lines were re-traced. Scale bars, 50 μm.
