2015
DOI: 10.3389/fgene.2015.00303
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Evolution of epithelial morphogenesis: phenotypic integration across multiple levels of biological organization

Abstract: Morphogenesis involves the dynamic reorganization of cell and tissue shapes to create the three-dimensional body. Intriguingly, different species have evolved different morphogenetic processes to achieve the same general outcomes during embryonic development. How are meaningful comparisons between species made, and where do the differences lie? In this Perspective, we argue that examining the evolution of embryonic morphogenesis requires the simultaneous consideration of different levels of biological organiza… Show more

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Cited by 22 publications
(27 citation statements)
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“…How then does zen control the rupture of the serosa? It has been proposed that zen activity in the serosa controls its rupture by regulating the contractile behavior of the serosa,thereby creating a window of opportunity for site-specific rupture [7,25,50]. However, this hypothesis does not considerzenactivityin the amnion of Oncopeltus and Tribolium, and the finding that knockdown of zen in these species leaves the amnion intact while exerting high strain on it (Fig.…”
Section: Functions Of the Amnionmentioning
confidence: 99%
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“…How then does zen control the rupture of the serosa? It has been proposed that zen activity in the serosa controls its rupture by regulating the contractile behavior of the serosa,thereby creating a window of opportunity for site-specific rupture [7,25,50]. However, this hypothesis does not considerzenactivityin the amnion of Oncopeltus and Tribolium, and the finding that knockdown of zen in these species leaves the amnion intact while exerting high strain on it (Fig.…”
Section: Functions Of the Amnionmentioning
confidence: 99%
“…In this case, zen activity in the amnion would be required for the controlled release of a factor from the amniotic cavity that predisposes the exposed serosa to rupture under The cellular mechanism by which the amnion forms a hole underneath the attached serosa remains elusive. For Oncopeltus, it has been proposed that this process is driven by apoptosis [7,25]. However, apoptosis of amnion cells in this region is also observed in Of-zen RNAi embryos in which the amniotic cavity remains intact [25], and apoptosis of amnion cells within the perimeter of the serosa-amnion fusion couldsimply reflect high mechanical stress [53].…”
Section: Functions Of the Amnionmentioning
confidence: 99%
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“…Functional studies have identified roles for zen in either early EEM specification or late EEM withdrawal (reviewed in 14 ). Although the Hox3 locus is prone to lineage-specific duplications 15,16 , to date a single EEM function -specification or morphogenesis (late tissue remodeling for withdrawal) -is known per species in bugs and flies [17][18][19] .…”
Section: Change Over Macroevolutionary Time Scales Can Produce New Gementioning
confidence: 99%
“…It has also clarified differences in the process of dorsal closure between Oncopeltus and Drosophila , with the latter being characterized by a homogeneous contraction in dorsal ectoderm and the former by a heterogeneous amnion with complex stress fibers throughout it (Panfilio & Roth, ). All these have served to provide a better understanding of the roles of extra‐embryonic membranes in late embryogenesis in insects in general, and of the evolution of these processes (Horn, Hilbrant, & Panfilio, ; Panfilio, ). As in previous examples, the addition of Oncopeltus to a within‐Holometabola comparison, serves to polarize the changes within the group and to identify the ancestral condition.…”
Section: Case Studiesmentioning
confidence: 99%