Evolutionarily recent dual obligatory symbiosis among adelgids indicates a transition between fungus- and insect-associated lifestyles
| Autor: | Gitta Szabó, Alejandro Manzano-Marín, Matthias Horn, Frederik Schulz, Elena Rebecca Toenshoff |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental microbiology
Microbial ecology 0106 biological sciences Technology Species complex Insecta Fungus 010603 evolutionary biology 01 natural sciences Microbiology Article Hemiptera 03 medical and health sciences Symbiosis Genetics Animals Adelgidae Phylogeny Ecology Evolution Behavior and Systematics 030304 developmental biology Synteny 0303 health sciences biology Host (biology) fungi Human Genome Fungi biochemical phenomena metabolism and nutrition Biological Sciences biology.organism_classification Infectious Diseases Evolutionary biology Candidatus bacteria Environmental Sciences |
| Zdroj: | The ISME journal, vol 16, iss 1 The ISME Journal, 16 (1) The ISME Journal |
| ISSN: | 1751-7370 1751-7362 |
| Popis: | Adelgids (Insecta: Hemiptera: Adelgidae) form a small group of insects but harbor a surprisingly diverse set of bacteriocyte-associated endosymbionts, which suggest multiple replacement and acquisition of symbionts over evolutionary time. Specific pairs of symbionts have been associated with adelgid lineages specialized on different secondary host conifers. Using a metagenomic approach, we investigated the symbiosis of the Adelges laricis/Adelgestardus species complex containing betaproteobacterial ("Candidatus Vallotia tarda") and gammaproteobacterial ("Candidatus Profftia tarda") symbionts. Genomic characteristics and metabolic pathway reconstructions revealed that Vallotia and Profftia are evolutionary young endosymbionts, which complement each other's role in essential amino acid production. Phylogenomic analyses and a high level of genomic synteny indicate an origin of the betaproteobacterial symbiont from endosymbionts of Rhizopus fungi. This evolutionary transition was accompanied with substantial loss of functions related to transcription regulation, secondary metabolite production, bacterial defense mechanisms, host infection, and manipulation. The transition from fungus to insect endosymbionts extends our current framework about evolutionary trajectories of host-associated microbes. The ISME Journal, 16 (1) ISSN:1751-7362 ISSN:1751-7370 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink