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Plant Physiology Online: The Development of Lateral Roots (2482 words) |
 | One such internal tissue is the pericycle, the exterior cell layer of the provascular cylinder which is surrounded by ground meristem (cortex + endodermis) and epidermis. |
 | This study demonstrated that extensive de-differentiation of the pericycle cells is apparently not required for the formation of LRPs. |
 | The first is defined when pericycle cells exit the meristem after establishment of LRP founder cells, generally in the acropetal pattern. |
| Roots (641 words) |
 | Pericycle - the outer boundary of the stele. |
 | The final step from the cytoplasm of the pericycle cells to the xylem is probably accomplished once again by active transport. |
 | The older parts of roots are sheathed in layers of dead cork cells impregnated with a waxy, waterproof (and airproof) substance called suberin. |