The proficiency of the original host species determines community-level plasmid dynamics

ABSTRACT Plasmids are common in natural bacterial communities, facilitating bacterial evolution via horizontal gene transfer. Bacterial species vary in their proficiency to host plasmids: whereas plasmids are stably maintained in some species regardless of selection for plasmid-encoded genes, in oth...

Full description

Saved in:
Bibliographic Details
Published in:FEMS microbiology ecology 2021-04, Vol.97 (4), p.1
Main Authors: Kottara, Anastasia, Hall, James P J, Brockhurst, Michael A
Format: Article
Language:English
Subjects:
Bacteria
Bacteria - genetics
Conjugation, Genetic
Ecology
Gene transfer
Gene Transfer, Horizontal
Horizontal transfer
Host Specificity
Mercury
Microbiology
Physiological aspects
Plasmids
Plasmids - genetics
Soil microorganisms
Species
Species diversity
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Plasmids are common in natural bacterial communities, facilitating bacterial evolution via horizontal gene transfer. Bacterial species vary in their proficiency to host plasmids: whereas plasmids are stably maintained in some species regardless of selection for plasmid-encoded genes, in other species, even beneficial plasmids are rapidly lost. It is, however, unclear how this variation in host proficiency affects plasmid persistence in communities. Here, we test this using multispecies bacterial soil communities comprising species varying in their proficiency to host a large conjugative mercury resistance plasmid, pQBR103. The plasmid reached higher community-level abundance where beneficial and when introduced to the community in a more proficient host species. Proficient plasmid host species were also better able to disseminate the plasmid to a wider diversity of host species. These findings suggest that the dynamics of plasmids in natural bacterial communities depend not only upon the plasmid's attributes and the selective environment but also upon the proficiency of their host species. Bacterial species that are better plasmid hosts act as plasmid superspreaders.
ISSN:0168-6496
1574-6941
DOI:10.1093/femsec/fiab026