Preprints

Filtering by Subject: Other Microbiology

Gut microbiota repeatability is contingent on temporal scale and age in wild meerkats

Alice Risely, Dominik W. Schmid, Nadine Mueller-Klein, et al.

Published: 2022-03-29
Subjects: Life Sciences, Microbiology, Other Microbiology

Inter-individual differences in gut microbiota composition are hypothesized to generate variation in host fitness – a premise for the evolution of host-gut microbe symbioses. However, recent evidence suggests that gut microbial communities are highly dynamic, challenging the notion that individuals harbour unique and stable gut microbial phenotypes. Leveraging a long-term dataset of wild [...]

Selfish, promiscuous, and sometimes useful: how mobile genetic elements drive horizontal gene transfer in microbial populations

Eduardo P. C. Rocha, Matthieu Haudiquet, Jorge Moura de Sousa, et al.

Published: 2021-12-04
Subjects: Ecology and Evolutionary Biology, Evolution, Genetics and Genomics, Genomics, Life Sciences, Microbiology, Other Microbiology

Horizontal gene transfer (HGT) drives microbial adaptation but is often under the control of mobile genetic elements (MGEs) whose interests are not necessarily aligned with those of their hosts. In general, transfer is costly to the donor cell while potentially beneficial to the recipients. The diversity and plasticity of cell-MGEs interactions, and those among MGEs, results in complex [...]

Impact of heat stress on the fitness outcomes of symbiotic infection in aphids: a meta-analysis

Kévin Tougeron, Corentin Iltis

Published: 2021-11-24
Subjects: Ecology and Evolutionary Biology, Entomology, Environmental Microbiology and Microbial Ecology Life Sciences, Evolution, Life Sciences, Microbiology, Other Ecology and Evolutionary Biology, Other Microbiology

Beneficial microorganisms shape the evolutionary trajectories of their hosts, facilitating or constraining the colonization of new ecological niches. One convincing example entails the responses of insect-microbe associations to rising temperatures. Indeed, the insect resilience to stressful high temperatures depends on the genetic identity of the obligate symbiont and the presence of heat [...]

Many defense systems in microbial genomes, but which is defending whom from what?

Eduardo P. C. Rocha, David Bikard

Published: 2021-09-18
Subjects: Ecology and Evolutionary Biology, Evolution, Genetics and Genomics, Life Sciences, Microbiology, Other Microbiology

Prokaryotes have numerous mobile genetic elements (MGE) that mediate horizontal gene transfer between cells. These elements can be costly, even deadly, and cells use numerous defense systems to filter, control or inactivate them. Surprisingly, many phages, conjugative plasmids, and their parasites, phage satellites or mobilizable plasmids, encode defense systems homologous to those of bacteria. [...]

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