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Uncovering Active Bacterial Symbionts in Three Species of Pollen-feeding Beetles (Nitidulidae: Meligethinae)
Journal article   Peer reviewed

Uncovering Active Bacterial Symbionts in Three Species of Pollen-feeding Beetles (Nitidulidae: Meligethinae)

Emiliano Mancini, Simone Sabatelli, Yi Hu, Sara Frasca, Andrea Di Giulio, Paolo Audisio, Christopher D. Brown, Jacob A. Russell and Marco Trizzino
Microbial ecology
21 Jan 2022
PMID: 35059821

Abstract

Ecology Environmental Sciences & Ecology Life Sciences & Biomedicine Marine & Freshwater Biology Microbiology Science & Technology
Microbial symbionts enable many phytophagous insects to specialize on plant-based diets through a range of metabolic services. Pollen comprises one-plant tissue consumed by such herbivores. While rich in lipids and proteins, its nutrient content is often imbalanced and difficult-to-access due to a digestibly recalcitrant cell wall. Pollen quality can be further degraded by harmful allelochemicals. To identify microbes that may aid in palynivory, we performed cDNA-based 16S rRNA metabarcoding on three related pollen beetles (Nitidulidae: Meligethinae) exhibiting different dietary breadths: Brassicogethes aeneus, B. matronalis, and Meligethes atratus. Nine bacterial symbionts (i.e., 97% OTUs) exhibited high metabolic activity during active feeding. Subsequent PCR surveys revealed varying prevalence of those from three Rickettsialles genera-Lariskella, Rickettsia, and Wolbachia-within beetle populations. Our findings lay the groundwork for future studies on the influence of phylogeny and diet on palynivorous insect microbiomes, and roles of symbionts in the use of challenging diets.

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Collaboration types
Industry collaboration
Domestic collaboration
International collaboration
Web of Science research areas
Ecology
Marine & Freshwater Biology
Microbiology
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