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PMID:20599904

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Citation

Bao, S, Fischbach, KF, Corbin, V and Cagan, RL (2010) Preferential adhesion maintains separation of ommatidia in the Drosophila eye. Dev. Biol. 344:948-56

Abstract

In the Drosophila eye, neighboring ommatidia are separated by inter-ommatidial cells (IOCs). How this ommatidial spacing emerges during eye development is not clear. Here we demonstrate that four adhesion molecules of the Irre cell recognition module (IRM) family play a redundant role in maintaining separation of ommatidia. The four IRM proteins are divided into two groups: Kirre and Rst are expressed in IOCs, and Hbs and Sns in primary pigment cells (1 degrees s). Kirre binds Hbs and Sns in vivo and in vitro. Reducing activity of either Rst or Kirre alone had minimal effects on ommatidial spacing, but reducing both together led to direct ommatidium:ommatidium contact. A similar phenotype was also observed when reducing both Hbs and Sns. Consistent with the role of these factors in sorting ommatidia, mis-expression of Hbs plus Sns within a single IOC led to complete separation of the cell from neighboring ommatidia. Our results indicate mutual preferential adhesion between ommatidia and IOCs mediated by four IRM proteins is both necessary and sufficient to maintain separation of ommatidia.

Links

PubMed PMC2921583 Online version:10.1016/j.ydbio.2010.06.013

Keywords

Animals; Drosophila/genetics; Drosophila/metabolism; Eye/growth & development; Eye/metabolism; Phenotype

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

DROME:A0A0B4LEH1

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:A1Z7J1

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:A1Z9X4

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:O97174

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:ICCR

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q0E9F2

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q8MRA3

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q8MSN7

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q9N9Y9

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q9V4Y0

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q9V787

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

DROME:Q9W4T9

involved_in

GO:0001745: compound eye morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete


See also

References

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