Related Experiment Video
Updated: Jan 4, 2026

Effect of Male Accessory Gland Products on Egg Laying in Gastropod Molluscs
Published on: June 22, 2014
A defective prostaglandin E synthase could affect egg formation in the silkworm Bombyx mori
Kohji Yamamoto1, Takuya Tsubota2, Tomohide Uno3
1Department of Bioscience and Biotechnology, Kyushu University Graduate School, Fukuoka, 819-0395, Japan.
Abstract:
We had previously reported a prostaglandin E synthase (bmPGES) in the silkworm Bombyx mori that catalyzes the isomerization of PGH2 to PGE2. The present study aimed to provide a genome-editing characterization of bmPGES in B. mori. Results showed bmPGES gene disruption to result in a reduced content of PGE2. The change affected the expression of chorion genes and egg formation in silkworms. Collectively, the results indicated that bmPGES could be involved in reproduction of B. mori. Therefore, this study provides insights into the physiological role of bmPGES and PGE2 in silkworms.
Related Concept Videos
Oogenesis
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

