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Hologenome analysis reveals dual symbiosis in the deep-sea hydrothermal vent snail Gigantopelta aegis.
- Source :
-
Nature communications [Nat Commun] 2021 Feb 19; Vol. 12 (1), pp. 1165. Date of Electronic Publication: 2021 Feb 19. - Publication Year :
- 2021
-
Abstract
- Animals endemic to deep-sea hydrothermal vents often form obligatory symbioses with bacteria, maintained by intricate host-symbiont interactions. Most genomic studies on holobionts have not investigated both sides to similar depths. Here, we report dual symbiosis in the peltospirid snail Gigantopelta aegis with two gammaproteobacterial endosymbionts: a sulfur oxidiser and a methane oxidiser. We assemble high-quality genomes for all three parties, including a chromosome-level host genome. Hologenomic analyses reveal mutualism with nutritional complementarity and metabolic co-dependency, highly versatile in transporting and using chemical energy. Gigantopelta aegis likely remodels its immune system to facilitate dual symbiosis. Comparisons with Chrysomallon squamiferum, a confamilial snail with a single sulfur-oxidising gammaproteobacterial endosymbiont, show that their sulfur-oxidising endosymbionts are phylogenetically distant. This is consistent with previous findings that they evolved endosymbiosis convergently. Notably, the two sulfur-oxidisers share the same capabilities in biosynthesising nutrients lacking in the host genomes, potentially a key criterion in symbiont selection.
- Subjects :
- Animals
Bacteria metabolism
Gammaproteobacteria genetics
Gammaproteobacteria metabolism
Gene Expression
Genome, Bacterial
Genomics
Phylogeny
Snails metabolism
Sulfur metabolism
Symbiosis physiology
Transcriptome
Bacteria genetics
Hydrothermal Vents microbiology
Snails genetics
Snails microbiology
Symbiosis genetics
Subjects
Details
- Language :
- English
- ISSN :
- 2041-1723
- Volume :
- 12
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Nature communications
- Publication Type :
- Academic Journal
- Accession number :
- 33608555
- Full Text :
- https://doi.org/10.1038/s41467-021-21450-7