Bacterial symbionts support larval sap feeding and adult folivory in (semi-)aquatic reed beetles
| Autor: | Takema Fukatsu, Kayoko Fukumori, Yannick Pauchet, Martin Kaltenpoth, Roy Kirsch, Lisa Carolin Bilz, Eugen Bauer, Gregor Kölsch, Frank Reis |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male animal structures Science 030106 microbiology Donaciinae Niche General Physics and Astronomy Zoology Evolutionary ecology General Biochemistry Genetics and Molecular Biology Article Microbial ecology Evolution Molecular 03 medical and health sciences Symbiosis Phylogenetics Exome Sequencing Animals Amino Acids lcsh:Science Phylogeny Larva Multidisciplinary biology Environmental microbiology Host (biology) fungi food and beverages General Chemistry Vitamins biology.organism_classification Coleoptera B vitamins 030104 developmental biology lcsh:Q Female Entomology Genome Bacterial Symbiotic bacteria |
| Zdroj: | Nature Communications Nature Communications, Vol 11, Iss 1, Pp 1-15 (2020) |
| ISSN: | 2041-1723 |
| Popis: | Symbiotic microbes can enable their host to access untapped nutritional resources but may also constrain niche space by promoting specialization. Here, we reconstruct functional changes in the evolutionary history of the symbiosis between a group of (semi-)aquatic herbivorous insects and mutualistic bacteria. Sequencing the symbiont genomes across 26 species of reed beetles (Chrysomelidae, Donaciinae) spanning four genera indicates that the genome-eroded mutualists provide life stage-specific benefits to larvae and adults, respectively. In the plant sap-feeding larvae, the symbionts are inferred to synthesize most of the essential amino acids as well as the B vitamin riboflavin. The adult reed beetles’ folivory is likely supported by symbiont-encoded pectinases that complement the host-encoded set of cellulases, as revealed by transcriptome sequencing. However, mapping the occurrence of the symbionts’ pectinase genes and the hosts’ food plant preferences onto the beetles’ phylogeny reveals multiple independent losses of pectinase genes in lineages that switched to feeding on pectin-poor plants, presumably constraining their hosts’ subsequent adaptive potential. Symbiotic microbes in insects can enable their hosts to access untapped nutritional resources. Here, the authors show that symbiotic bacteria in reed beetles can provide essential amino acids to sap-feeding larvae and help leaf-feeding adults to degrade pectin, respectively. |
| Databáze: | OpenAIRE |
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