6533b883fe1ef96bd12dbaf2
RESEARCH PRODUCT
Data from: Ancient symbiosis confers desiccation resistance to stored grain pest beetles
Tobias EnglNadia EberlCarla GorseTheresa KrügerThorsten H.p. SchmidtRudy PlarreCornel AdlerMartin Kaltenpothsubject
BlattabacteriumAhasvaerus advenaHoloceneBacteroidetesDinoderus bifoveolatusfungiRhizopertha dominicafood and beveragesbiochemical phenomena metabolism and nutritionLife sciencessymbiosisOryzaephilus mercatorProstephanus truncatusmedicine and health caregrain pest beetlesdesiccationSulcia muelleriOryzaephilus surinamensisMedicinecuticleDinoderus porcellusLyctus brunneusdescription
Microbial symbionts of insects provide a range of ecological traits to their hosts that are beneficial in the context of biotic interactions. However, little is known about insect symbiont-mediated adaptation to the abiotic environment, e.g. temperature and humidity. Here we report on an ancient clade of intracellular, bacteriome-located Bacteroidetes symbionts that are associated with grain and wood pest beetles of the phylogenetically distant families Silvanidae and Bostrichidae. In the saw-toothed grain beetle Oryzaephilus surinamensis, we demonstrate that the symbionts affect cuticle thickness, melanization and hydrocarbon profile, enhancing desiccation resistance and thereby strongly improving fitness under dry conditions. Together with earlier observations on symbiont contributions to cuticle biosynthesis in weevils, our findings indicate that convergent acquisitions of bacterial mutualists represented key adaptations enabling diverse pest beetle groups to survive and proliferate under the low ambient humidity that characterizes dry grain storage facilities.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-04 |