Spatiotemporal Expression Profile of the Pumilio Gene in the Embryonic Development of Silkworm
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Liang Chen
We previously identified a pumilio gene in silkworm (Bombyx mori L.), designated BmPUM, which was specifically expressed in the ovary and testis. To further characterize this gene’s involvement in silkworm development, we have determined the spatiotemporal expression pattern of BmPUM during all embryonic stages. Real-time polymerase chain reaction (RT-PCR) analysis revealed that BmPUM was expressed in all stages of silkworm embryos and that its transcript levels displayed two distinct peaks. The first was observed at the germ-band formation stage (1 d after oviposition) and dropped to a low level at the gonad formation stage (5 d after oviposition). The second was detected at the stage of bristle follicle occurrence (6 d after oviposition), which was confirmed by Western blot analysis and immunohistochemistry. Nanos (Nos), functioning together with Pum in abdomen formation of Drosophila embryos, was also highly expressed at the beginning (0 h to 1 d after oviposition) of embryogenesis, but its transcript levels were very low after the stage of germ-band formation. These results suggest that BmPUM functions with Bombyx mori nanos (Bm-nanos) at the early stages of silkworm embryonic development, and may then play a role in gonad formation and the occurrence of bristle follicles. Our data thus provide a foundation to uncover the role of BmPUM during silkworm development.
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Articles in the same Issue
- Excelsoside: A New Benzylic Diglycoside from the Leaves of Milicia excelsa
- Elatumic Acid: A New Ursolic Acid Congener from Omphalocarpum elatum Miers (Sapotaceae)
- Synthesis and Antimicrobial Activities of Oxazepine and Oxazocine Derivatives
- A New Isoxazolic Compound Acts as α7 Nicotinic Receptor Agonist in Human Umbilical Vein Endothelial Cells
- Water Stress Enhances Expression of Genes Encoding Plastid Terminal Oxidase and Key Components of Chlororespiration and Alternative Respiration in Soybean Seedlings
- Plant-Mediated Stereoselective Biotransformation of Phenylglyoxylic Acid Esters
- Spatiotemporal Expression Profile of the Pumilio Gene in the Embryonic Development of Silkworm
- In vitro Antiproliferative Effect of Helix aspersa Hemocyanin on Multiple Malignant Cell Lines
- (Z)-3-Dodecenoic Acid Is the Main Component of Full-Body n-Hexane Extracts from Two Acacia Gall-Inducing Thrips (Thysanoptera) and May Function as an Alarm Pheromone
- The Flavonols Quercetin, Myricetin, Kaempferol, and Galangin Inhibit the Net Oxygen Consumption by Immune Complex- Stimulated Human and Rabbit Neutrophils
