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Proline‐rich extensin‐like receptor kinases (PERKs) belong to the hydroxyproline‐rich glycoprotein (HRGP) superfamily known to be involved in many plant developmental processes. Here, we characterized two pollen‐expressed PERKs from Arabidopsis thaliana, PERK5 and PERK12. Pollen tube growth was impaired in single and double perk5‐1 perk12‐1 loss of function mutants, with an impact on seed production...
Root hairs (RHs) develop from specialized epidermal trichoblast cells, whereas epidermal cells that lack RHs are known as atrichoblasts. The mechanism controlling RH cell fate is only partially understood.
RH cell fate is regulated by a transcription factor complex that promotes the expression of the homeodomain protein GLABRA 2 (GL2), which blocks RH development by inhibiting ROOT HAIR DEFECTIVE 6...
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