Lightella neohaematopini: A new lineage of highly reduced endosymbionts coevolving with chipmunk lice of the genus Neohaematopinus
Sucking lice (Anoplura) are known to have established symbiotic associations multiple times with different groups of bacteria as diverse as Enterobacteriales, Legionellales, and Neisseriales. This diversity, together with absence of a common coevolving symbiont (such as Buchnera , in aphids), indica...
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Published in | Frontiers in microbiology Vol. 13; p. 900312 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
01.08.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Sucking lice (Anoplura) are known to have established symbiotic associations multiple times with different groups of bacteria as diverse as Enterobacteriales, Legionellales, and Neisseriales. This diversity, together with absence of a common coevolving symbiont (such as
Buchnera
, in aphids), indicates that sucking lice underwent a series of symbiont acquisitions, losses, and replacements. To better understand evolution and significance of louse symbionts, genomic and phylogenetic data are needed from a broader taxonomic diversity of lice and their symbiotic bacteria. In this study, we extend the known spectrum of the louse symbionts with a new lineage associated with
Neohaematopinus pacificus
, a louse species that commonly parasitizes North American chipmunks. The recent coevolutionary analysis showed that rather than a single species, these lice form a cluster of unique phylogenetic lineages specific to separate chipmunk species (or group of closely related species). Using metagenomic assemblies, we show that the lice harbor a bacterium which mirrors their phylogeny and displays traits typical for obligate mutualists. Phylogenetic analyses place this bacterium within Enterobacteriaceae on a long branch related to another louse symbiont, “
Candidatus
Puchtella pedicinophila.” We propose for this symbiotic lineage the name “
Candidatus
Lightella neohaematopini.” Based on the reconstruction of metabolic pathways, we suggest that like other louse symbionts,
L. neohaematopini
provides its host with at least some B vitamins. In addition, several samples harbored another symbiotic bacterium phylogenetically affiliated with the Neisseriales-related symbionts described previously from the lice
Polyplax serrata
and
Hoplopleura acanthopus
. Characterizing these bacteria further extend the known diversity of the symbiotic associations in lice and show unique complexity and dynamics of the system. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 This article was submitted to Microbial Symbioses, a section of the journal Frontiers in Microbiology Edited by: Chih-Horng Kuo, Institute of Plant and Microbial Biology, Academia Sinica, Taiwan Reviewed by: Daniel Tamarit, Wageningen University and Research, Netherlands; Jennah Elizabeth Dharamshi, Stockholm University, Sweden |
ISSN: | 1664-302X 1664-302X |
DOI: | 10.3389/fmicb.2022.900312 |