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Tra-2 Mediates Cross-Talk Between Sex Determination and Wing Polyphenism in Female Nilaparvata lugens
Sexual dimorphism and wing polyphenism are important and evolutionarily conserved features of many insect species. In this article, we found a cross-talk linking sexual differentiation with wing polyphenism in the brown planthopper (BPH) (order: Hemiptera). Knockdown of the sex determination gene in...
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Published in: | Genetics (Austin) 2017-11, Vol.207 (3), p.1067-1078 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Sexual dimorphism and wing polyphenism are important and evolutionarily conserved features of many insect species. In this article, we found a cross-talk linking sexual differentiation with wing polyphenism in the brown planthopper (BPH)
(order: Hemiptera). Knockdown of the sex determination gene
in
(
) in nymph caused females to develop into infertile pseudomales containing undeveloped ovaries. Whereas males treated with ds
exhibited normal morphology, but lost fertility. Knockdown of
in adult females (maternal RNAi) resulted in long-winged female offspring, indicating that maternal RNAi changed the wing morphs in female offspring. In addition, silencing of
down-regulated the expression of the
transcription factor FoxO (
), and simultaneously up-regulated the expression of
(
(
)
)
(
), the two critical genes in the insulin signaling pathway. Furthermore, the long-winged effect caused by maternal ds
RNAi could be reversed by silencing of
and
, leading to short-winged morphs. We propose that there is a cross-talk between the sexual differentiation and wing polyphenism pathways mediated by
during embryonic stages. |
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ISSN: | 1943-2631 0016-6731 1943-2631 |
DOI: | 10.1534/genetics.117.300328 |