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Characterization of tailless functions during Drosophila optic lobe formation


Academic year: 2021

Partager "Characterization of tailless functions during Drosophila optic lobe formation"


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Supplementary Figure 1: tll::GFP and c855a-GAL4 expression in eye imaginal discs

(A and C) maximum projections and (B and D) single sections of eye imaginal discs at 96 h ALH. (A, B) tll::GFP is expressed in one cell per ommatidia, which is also positive for Fas II. (C, D) c855a-GAL4 drives strong mCD8::GFP expression in peripodial epithelial cells. Weak and irregular expression can also be seen in ommatidial cells that are positive for Fas II. Scale bars: 25µm for (A, C) and 10µm for (B, D).



Supplementary Figure 2: Tll protein levels are not detectable in tllmiRNA clones (A-A’’) shows a lateral section at 72 h ALH. βGal labels tll knockdown clones. Dlg labels cell outline. Upon tll knockdown Tll protein is not detectable in clonal neuroepithelial cells while immunofluorescent staining is clearly visible in neighboring non-clonal cells. Scale bar 10µm.



Supplementary Figure 3: tlll49 mutant clones phenocopy tllmiRNA knockdown clones.

(A-B) single frontal section and (C) single lateral section at 72 h ALH. mCD8::GFP labels tlll49 mutant clones. (A-B’’) The expression of Dac is severely reduced or

absent in tll mutant MARCM clones (arrowheads) whereas Dac expression is visible in LPCs and lamina neurons at the control side (arrow). (C) Clonal lack of tll results in a complete loss of L’sc expression in the neuroepithelial cell to neuroblast transition zone. Scale bar 10 µm.



Supplementary Figure 4: tll misexpression is not sufficient to induce ectopic L’sc or Dac expression

(A) single frontal and (B) single lateral sections at 72 h ALH. βGal staining labels tll misexpression clones. (A-A’) Clonal misexpression of tll is not sufficient to induce Dac expression in more medial neuroepithelial cells. (B-B’) Clonal misexpression of

tll is not sufficient to induce L’sc expression in more lateral neuroepithelial cells.


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