Spodoptera frugiperda transcriptional response to infestation by Steinernema carpocapsae
Steinernema carpocapsae is an entomopathogenic nematode (EPN) used in biological control of agricultural pest insects. It enters the hemocoel of its host via the intestinal tract and releases its symbiotic bacterium Xenorhabdus nematophila . In order to improve our knowledge about the physiological...
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Veröffentlicht in: | Scientific reports 2019-09, Vol.9 (1), p.12879-13, Article 12879 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Steinernema carpocapsae
is an entomopathogenic nematode (EPN) used in biological control of agricultural pest insects. It enters the hemocoel of its host via the intestinal tract and releases its symbiotic bacterium
Xenorhabdus nematophila
. In order to improve our knowledge about the physiological responses of its different hosts, we examined the transcriptional responses to EPN infestation of the fat body, the hemocytes and the midgut in the lepidopteran pest
Spodoptera frugiperda
. The tissues poorly respond to the infestation at an early time post-infestation of 8 h with only 5 genes differentially expressed in the fat body of the caterpillars. Strong transcriptional responses are observed at a later time point of 15 h post-infestation in all three tissues. Few genes are differentially expressed in the midgut but tissue-specific panels of induced metalloprotease inhibitors, immune receptors and antimicrobial peptides together with several uncharacterized genes are up-regulated in the fat body and the hemocytes. Among the most up-regulated genes, we identified new potential immune effectors, unique to Lepidoptera, which show homology with bacterial genes of unknown function. Altogether, these results pave the way for further functional studies of the responsive genes’ involvement in the interaction with the EPN. |
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-019-49410-8 |