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Figure 10 | BMC Developmental Biology

Figure 10

From: Tc-knirps plays different roles in the specification of antennal and mandibular parasegment boundaries and is regulated by a pair-rule gene in the beetle Tribolium castaneum

Figure 10

The genetic interactions that help establish the PS0/PS1 parasegmental boundary in Drosophila and Tribolium . In Drosophila (A), expression of the mandibular engrailed (en) stripe is dependent on the activity of buttonhead (btd) [9]. In contrast, in Tribolium (B), expression of the mandibular Tc-en stripe is dependent on the combined activity of Tc-kni in the anterior compartment (PS0) (this study) and Tc-eve in the posterior compartment (PS1) [24]. Cap‘n’collar (Cnc) may limit positive regulation of hh by col to the intercalary segment by physically interacting with Col in the mandibular segment [22]. The interactions between the segment polarity genes in the mandibular segment in Tribolium are assumed from what is known in Drosophila[13]. Black symbols: Possible direct genetic interactions. Gray symbols: Direct interactions shown in [22].

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