Journal
PEERJ
Volume 4, Issue -, Pages -Publisher
PEERJ INC
DOI: 10.7717/peerj.2109
Keywords
Cold tolerance; Mountain pine beetle; Insect overwintering; Glycerol; Physiological stress; Lodgepole pine; Heat shock proteins; Anti-freeze; Cytochromes P450
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Funding
- Natural Science and Engineering Research Council of Canada (NSERC)
- Genome Canada
- Genome British Columbia
- Genome Alberta
- Canada Research Chairs (CRC) Program
- Canada Foundation for Innovation (CFI)
- British Columbia Knowledge Development Fund (BCKDF)
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Cold-induced mortality has historically been a key aspect of mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae), population control, but little is known about the molecular basis for cold tolerance in this insect. We used RNA-seq analysis to monitor gene expression patterns of mountain pine beetle larvae at four time points during their overwintering period-early-autumn, late-autumn, early-spring, and late-spring. Changing transcript profiles over the winter indicates a multipronged physiological response from larvae that is broadly characterized by gene transcripts involved in insect immune responses and detoxification during the autumn. In the spring, although transcripts associated with developmental process are present, there was no particular biological process dominating the transcriptome.
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