Role of and in Development of Abdominal Epithelia Breaks Posterior Prevalence Rule


The spatially non-overlapping function of Hox genes is known to determine Antero-posterior body axis in all the bilaterians. The expression of Hox genes is found to be overlapping in several cases. According to the posterior prevalence rule, posterior Hox genes suppress the function of anterior Hox genes in the overlapping expression domains. Our findings show an exception to the rule of posterior prevalence. We show that in the overlapping expression domains of abd-A and Abd-B in early pupal abdominal epithelia, both the genes have essential roles. While abd-A is required for cell proliferation, Abd-B determines the segmental identity.


Vyšlo v časopise: Role of and in Development of Abdominal Epithelia Breaks Posterior Prevalence Rule. PLoS Genet 10(10): e32767. doi:10.1371/journal.pgen.1004717
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.pgen.1004717

Souhrn

The spatially non-overlapping function of Hox genes is known to determine Antero-posterior body axis in all the bilaterians. The expression of Hox genes is found to be overlapping in several cases. According to the posterior prevalence rule, posterior Hox genes suppress the function of anterior Hox genes in the overlapping expression domains. Our findings show an exception to the rule of posterior prevalence. We show that in the overlapping expression domains of abd-A and Abd-B in early pupal abdominal epithelia, both the genes have essential roles. While abd-A is required for cell proliferation, Abd-B determines the segmental identity.


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