Food quality affects the expression of antimicrobial peptide genes upon simulated parasite attack in the larvae of greater wax moth

Indrikis Krams, Sanita Kecko, Inna Inashkina, Giedrius Trakimas, Ronalds Krams, Didzis Elferts, Jolanta Vrublevska, Priit Jõers, Markus J. Rantala, Severi Luoto, Jorge Contreras-Garduño, Līga Jankevica, Laila Meija, Tatjana Krama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Predator-prey interactions are an important evolutionary force affecting the immunity of the prey. Parasitoids and mites pierce the cuticle of their prey, which respond by activating their immune system against predatory attacks. Immunity is a costly function for the organism, as it often competes with other life-history traits for limited nutrients. We tested whether the expression of antimicrobial peptides (AMP) of the larvae of the greater wax moth Galleria mellonella (L.) (Lepidoptera: Pyralidae) changes as a consequence of insertion of a nylon monofilament, which acts like a synthetic parasite. The treatment was done for larvae grown on a high-quality vs. a low-quality diet. The expression of Gloverin and 6-tox were upregulated in response to the insertion of the nylon monofilament. The expression of 6-tox, Cecropin-D, and Gallerimycin were significantly higher in the ‘low-quality diet’ group than in the ‘high-quality diet’ group. As food quality seems to affect AMP gene expression in G. mellonella larvae, it should always be controlled for in studies on bacterial and fungal infections in G. mellonella.

Original languageEnglish
Pages (from-to)129-137
Number of pages9
JournalEntomologia Experimentalis et Applicata
Volume165
Issue number2-3
DOIs
Publication statusPublished - Dec 2017

Keywords

  • ecological immunology
  • Galleria mellonella
  • innate immunity
  • Lepidoptera
  • Pyralidae

Field of Science

  • 1.5 Earth and related Environmental sciences
  • 1.6 Biological sciences

Publication Type

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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