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1 December 2006 Expression of Two Ecdysteroid-Regulated Genes, Broad-Complex and E75, in the Brain and Ovary of the Honeybee (Apis mellifera L.)
Rajib Kumar Paul, Hideaki Takeuchi, Takeo Kubo
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Abstract

We previously demonstrated that two ecdysteroid-regulated genes, Mblk-1/E93 and E74, are expressed selectively in Kenyon cell subtypes in the mushroom bodies of the honeybee (Apis mellifera L.) brain. To further examine the possible involvement of ecdysteroid-regulated genes in brain function as well as in oogenesis in the honeybee, we isolated cDNAs for two other ecdysteroid-regulated genes, Broad-Complex (BR-C) and E75, and analyzed their expression in the worker brain as well as in the queen abdomen. In situ hybridization revealed that BR-C, like Mblk-1/E93, is expressed selectively in the large-type Kenyon cells of the mushroom bodies in the worker brain, whereas E75 is expressed in all mushroom body neuron subtypes, suggesting a difference in the mode of response to ecdysteroid among Kenyon cell subtypes. In the queen ovary, both BR-C and E75 are expressed preferentially in the follicle cells that surround egg cells at the late stage, suggesting their role in oogenesis. These results suggest that BR-C and E75 are involved in the regulation of brain function as well as in reproductive physiology in the adult honeybee.

Rajib Kumar Paul, Hideaki Takeuchi, and Takeo Kubo "Expression of Two Ecdysteroid-Regulated Genes, Broad-Complex and E75, in the Brain and Ovary of the Honeybee (Apis mellifera L.)," Zoological Science 23(12), 1085-1092, (1 December 2006). https://doi.org/10.2108/zsj.23.1085
Received: 13 July 2006; Accepted: 1 August 2006; Published: 1 December 2006
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