Gated communities: apoplastic and symplastic signals converge at plasmodesmata to control cell fates.
Gated communities: apoplastic and symplastic signals converge at plasmodesmata to control cell fates.
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DOI：
10.1093/jxb/ert245
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发表时间：
2013-12
影响因子：
6.9
通讯作者：
Yvonne Stahl;R. Simon
中科院分区：
文献类型：
--
作者：
Yvonne Stahl;R. Simon
Due to their rigid cell walls, plant cells can only communicate with each other either by symplastic transport of diverse non-cell autonomous signalling molecules via plasmodesmata (PDs) or by endo- and exocytosis of signalling molecules via the extracellular apoplastic space. PDs are plasma membrane-lined channels spanning the cell wall between neighbouring cells, allowing the exchange of molecules by symplastic movement through them. This review focuses on developmental decisions that are coordinated by short- and long-distance communication of cells via PDs. We propose a model combining both apoplastic and symplastic signalling events via secreted ligands and their PD-localized receptor kinases which gate the symplastic transport of information molecules through PDs. Cell communities can thus coordinate cell-fate decisions non-cell autonomously by connecting or disconnecting symplastic subdomains. Here we concentrate on the establishment of such subdomains in the plant's primary meristems that serve to maintain long-lasting stem cell populations in the shoot and root apical meristems, and discuss how apoplastic signalling via transport of information molecules through PDs is integrated with symplastic feedback signalling events.
