Unpredictable soil conditions can affect the prevalence of a microbial symbiosis.

Autor:	Scott TJ; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, United States.; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States., Stephenson CJ; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States., Rao S; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States., Queller DC; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States., Strassmann JE; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States.
Jazyk:	angličtina
Zdroj:	PeerJ [PeerJ] 2024 May 20; Vol. 12, pp. e17445. Date of Electronic Publication: 2024 May 20 (Print Publication: 2024).
DOI:	10.7717/peerj.17445
Abstrakt:	The evolution of symbiotic interactions may be affected by unpredictable conditions. However, a link between prevalence of these conditions and symbiosis has not been widely demonstrated. We test for these associations using Dictyostelium discoideum social amoebae and their bacterial endosymbionts. D. discoideum commonly hosts endosymbiotic bacteria from three taxa: Paraburkholderia, Amoebophilus and Chlamydiae. Three species of facultative Paraburkholderia endosymbionts are the best studied and give hosts the ability to carry prey bacteria through the dispersal stage to new environments. Amoebophilus and Chlamydiae are obligate endosymbiont lineages with no measurable impact on host fitness. We tested whether the frequency of both single infections and coinfections of these symbionts were associated with the unpredictability of their soil environments by using symbiont presence-absence data from D. discoideum isolates from 21 locations across the eastern United States. We found that symbiosis across all infection types, symbiosis with Amoebophilus and Chlamydiae obligate endosymbionts, and symbiosis involving coinfections were not associated with any of our measures. However, unpredictable precipitation was associated with symbiosis in two species of Paraburkholderia , suggesting a link between unpredictable conditions and symbiosis. Competing Interests: The authors declare that they have no competing interests. (© 2024 Scott et al.)
Databáze:	MEDLINE
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