ArticlePloS one2023
A critical role for ecdysone response genes in regulating egg production in adult female Rhodnius prolixus.
Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Neuropeptide F alters expression of feeding, energy metabolism, and reproduction genes in female freshwater prawn, Macrobrachium rosenbergii.Scientific reports · 2026Article
- 20-hydroxyecdysone-mediated regulation of the ribosomal protein Cs40SRPS4 via CsE74A is essential for vitellogenesis in Chilo suppressalis.Insect science · 2026Article
- A model system test of trophic transmission of RNA interference effects using the milkweed bug Oncopeltus fasciatus (Hemiptera).Scientific reports · 2026Article
- Article
- Loss of vitellogenin receptor function results in yolk depletion, virome expansion, and reduced bacterial load within the oocytes of Rhodnius prolixus.BMC biology · 2026Article
- RNA Interference-Mediated Suppression of Ecdysone Signaling Inhibits Choriogenesis in Two Coleoptera Species.International journal of molecular sciences · 2024Article
- The octopamine receptor OAα1 influences oogenesis and reproductive performance in Rhodnius prolixus.PloS one · 2023Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ecdysteroids control ovary growth and egg production through a complex gene hierarchy. In the female Rhodnius prolixus, a blood-gorging triatomine and the vector of Chagas disease, we have identified the ecdysone response genes in the ovary using transcriptomic data. We then quantified the expression of the ecdysone response gene transcripts (E75, E74, BR-C, HR3, HR4, and FTZ-F1) in several tissues, including the ovary, following a blood meal. These results confirm the presence of these transcripts in several tissues in R. prolixus and show that the ecdysone response genes in the ovary are mostly upregulated during the first three days post blood meal (PBM). Knockdown of E75, E74, or FTZ-F1 transcripts using RNA interference (RNAi) was used to understand the role of the ecdysone response genes in vitellogenesis and egg production. Knockdown significantly decreases the expression of the transcripts for the ecdysone receptor and Halloween genes in the fat body and the ovaries and reduces the titer of ecdysteroid in the hemolymph. Knockdown of each of these transcription factors typically alters the expression of the other transcription factors. Knockdown also significantly decreases the expression of vitellogenin transcripts, Vg1 and Vg2, in the fat body and ovaries and reduces the number of eggs produced and laid. Some of the laid eggs have an irregular shape and smaller volume, and their hatching rate is decreased. Knockdown also influences the expression of the chorion gene transcripts Rp30 and Rp45. The overall effect of knockdown is a decrease in number of eggs produced and a severe reduction in number of eggs laid and their hatching rate. Clearly, ecdysteroids and ecdysone response genes play a significant role in reproduction in R. prolixus.
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