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Maintaining apical dominance in the fern gametophyte
Plasmodesmata allow intercellular transport in multicellular plants, and are necessary for apical dominance in fern gametophytes (one apical-type cell suppressing development of the apical type in all other cells). Holloway and Lantin (pp. 409-417) develop a model, based on observed plasmodesmatal networks, that reproduces the apical dominance phenomenon and the responses to experimental disruption of plasmodesmatal connections.
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