Dynamic morphogenesis of a pioneer axon in Drosophilaand its regulation by Abl tyrosine kinase

Live imaging of an axon in its native tissue shows that its growth is protrusive and occurs by stabilization of selected filopodia. Guidance signaling, however, for example, via Abl tyrosine kinase, does not control these morphological properties directly but rather controls actin distribution to determine where filopodial dynamics can occur.