Genetic innovations in animal–microbe symbioses

J Perreau, NA Moran - Nature Reviews Genetics, 2022 - nature.com
Animal hosts have initiated myriad symbiotic associations with microorganisms and often
have maintained these symbioses for millions of years, spanning drastic changes in …

Diversity and function of arthropod endosymbiont toxins

JH Massey, ILG Newton - Trends in Microbiology, 2022 - cell.com
Bacterial endosymbionts induce dramatic phenotypes in their arthropod hosts, including
cytoplasmic incompatibility, feminization, parthenogenesis, male killing, parasitoid defense …

Unconventional structure and mechanisms for membrane interaction and translocation of the NF-κB-targeting toxin AIP56

J Lisboa, C Pereira, RD Pinto, IS Rodrigues… - Nature …, 2023 - nature.com
Bacterial AB toxins are secreted key virulence factors that are internalized by target cells
through receptor-mediated endocytosis, translocating their enzymatic domain to the cytosol …

Defensive symbionts and the evolution of parasitoid host specialization

C Vorburger - Annual Review of Entomology, 2022 - annualreviews.org
Insect host–parasitoid interactions abound in nature and are characterized by a high degree
of host specialization. In addition to their behavioral and immune defenses, many host …

An aphid symbiont confers protection against a specialized RNA virus, another increases vulnerability to the same pathogen

CHV Higashi, WL Nichols, G Chevignon… - Molecular …, 2023 - Wiley Online Library
Insects often harbour heritable symbionts that provide defence against specialized natural
enemies, yet little is known about symbiont protection when hosts face simultaneous threats …

Mobile elements create strain‐level variation in the services conferred by an aphid symbiont

V Patel, N Lynn‐Bell, G Chevignon… - Environmental …, 2023 - Wiley Online Library
Heritable, facultative symbionts are common in arthropods, often functioning in host defence.
Despite moderately reduced genomes, facultative symbionts retain evolutionary potential …

Co-obligate symbioses have repeatedly evolved across aphids, but partner identity and nutritional contributions vary across lineages

A Manzano-Marín, A Coeur d'acier… - Peer Community …, 2023 - peercommunityjournal.org
Aphids are a large family of phloem-sap feeders. They typically rely on a single bacterial
endosymbiont, Buchnera aphidicola, to supply them with essential nutrients lacking in their …

Bacteriophages roam the wheat phyllosphere

LM Forero-Junco, KWS Alanin, AM Djurhuus, W Kot… - Viruses, 2022 - mdpi.com
The phyllosphere microbiome plays an important role in plant fitness. Recently,
bacteriophages have been shown to play a role in shaping the bacterial community …

Toxin-mediated protection against natural enemies by insect defensive symbionts

KM Oliver, SJ Perlman - Advances in insect physiology, 2020 - Elsevier
All organisms have evolved a wide range of strategies to protect against natural enemies,
from complex avoidance behaviours to sophisticated immune systems, and insects are no …

Evolutionary genomics of APSE: a tailed phage that lysogenically converts the bacterium Hamiltonella defensa into a heritable protective symbiont of aphids

BM Boyd, G Chevignon, V Patel, KM Oliver, MR Strand - Virology journal, 2021 - Springer
Background Most phages infect free-living bacteria but a few have been identified that infect
heritable symbionts of insects or other eukaryotes. Heritable symbionts are usually …