Geometry can provide long-range mechanical guidance for embryogenesis
Fig 4
PMG invagination can contribute to GB extension.
Parameters are the same as in Fig 3, reprinted in (a), but (b–e) another region (red) is actively contracting in an isotropic way, mimicking the effect of PMG invagination on neighbouring tissues. From (b) to (d), the isotropic PMG contraction intensity is doubled each time. (e), effect of isotropic PMG contraction in the absence of any myosin activity in the GB itself.