Journal
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
Volume 70, Issue -, Pages 1-8Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dci.2016.12.007
Keywords
Tenebrio molitor; Insect egg; Immune defense; Antimicrobial peptides
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Funding
- Max Planck Gesellschaft and the Fraunhofer-Gesellschaft via the collaborative project AIM-Biotech
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In order to survive microbe encounters, insects rely on both physical barriers as well as local and systemic immune responses. Most research focusses on adult or larval defenses however, whereas insect eggs are also in need of protection. Lately, the defense of eggs against microbes has received an increasing amount of attention, be it through endogenous egg defenses, trans-generational immune priming (TGIP) or parental investment. Here we studied the endogenous immune response in eggs and adults of Tenebrio molitor. We show that many immune genes are induced in both adults and eggs. Furthermore, we show that eggs reach comparable levels of immune gene expression as adults. These findings show that the eggs of Tenebrio are capable of an impressive endogenous immune response, and indicate that such inducible egg defenses are likely common in insects. (C) 2016 Elsevier Ltd. All rights reserved.
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