The role of ARPC4 in tip growth and alignment of the polar axis in filaments of Physcomitrella patens.


When the actin related protein 2/3 (Arp2/3) complex member arpc4 was deleted in Physcomitrella patens (moss), the resulting null mutant (Deltaarpc4) was viable and revealed no gross changes during morphogenesis of filaments into gametophores. However, we observed a striking reduction of filamentous tip growth, resulting in smaller, denser colonies. Although… (More)


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