Transcriptional profiling of Arabidopsis root hairs and pollen defines an apical cell growth signature

Becker, Jörg D; Takeda, Seiji; Borges, Filipe; Dolan, Liam; Feijó, José A

http://hdl.handle.net/10400.7/322

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Current views on the control of cell development are anchored on the notion that phenotypes are defined by networks of transcriptional activity. The large amounts of information brought about by transcriptomics should allow the definition of these networks through the analysis of cell-specific transcriptional signatures. Here we test this principle by applying an analogue to comparative anatomy at the cellular level, searching for conserved transcriptional signatures, or conserved small gene-regulatory networks (GRNs) on root hairs (RH) and pollen tubes (PT), two filamentous apical growing cells that are a striking example of conservation of structure and function in plants.