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Updated: Oct 12, 2026

Confocal Live Imaging of Shoot Apical Meristems from Different Plant Species
Published on: March 29, 2019
Clonal Analysis Provides Evidence for Transient Initial Cells in Shoot Apical Meristems of Seed Plants
Zagórska-Marek1, Turzańska
1Institute of Botany, Wroclaw University, Kanonia St.6/8, 50-328 Wroclaw, Poland
Abstract:
Drift of mutated sectors in sectorial or mericlinal plant chimeras has been interpreted as indirect evidence of initial impermanence at the apex. However, the same effect may result from mutation in noninitial cells positioned close to the vertex of the apical dome. Clonal analysis of the cell packets present in the superficial layer of spruce and magnolia apices provided the library of patterns suggesting that the position and the number of initial cells, and in some cases also the meristem axis inclination, may change over time. Multicellular clones originating from a single cell have been found in the geometric center of some apices, whereas in other apices the cellular center (where three or four clonal borders meet) did not correspond to the geome
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