Talin is required to position and expand the luminal domain of the Drosophila heart tube

Fluid- and gas-transporting tubular organs are critical to metazoan development and homeostasis. Tubulogenesis involves cell polarization and morphogenesis to specify the luminal, adhesive, and basal cell domains and to establish an open lumen. We explore a requirement for Talin, a cytoplasmic integrin adapter, during Drosophila melanogaster embryonic heart tube development. Talin marks the presumptive luminal domain and is required to orient …