ArticleThe ISME journal2022
Endosymbiont population genomics sheds light on transmission mode, partner specificity, and stability of the scaly-foot snail holobiont.
Article in The ISME journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 23 citations in OpenAlex.
- In situ evidence of tiered adaptations buffering a chemosynthetic clam holobiont against environmental sulfide fluctuations.Science advances · 2026Article
- Intricate chemosymbiosis in a widespread shallow-water thyasirid clam.Science advances · 2026Article
- Comparative Genomics Reveals Multipartite Genomes Undergoing Loss in the Fungal Endosymbiotic Genus Mycetohabitans.Genome biology and evolution · 2025Article
- Host Shaping Associated Microbiota in Hydrothermal Vent Snails from the Indian Ocean Ridge.Biology · 2025Article
- Symbiont Acquisition Strategies in Post-Settlement Stages of Two Co-Occurring Deep-SeaEcology and evolution · 2024Article
- Ecological drift during colonization drives within-host and between-host heterogeneity in an animal-associated symbiont.PLoS biology · 2024Article
- Mosaic environment-driven evolution of the deep-sea mussel Gigantidas platifrons bacterial endosymbiont.Microbiome · 2023Article
- A regulatory hydrogenase gene cluster observed in the thioautotrophic symbiont of Bathymodiolus mussel in the East Pacific Rise.Scientific reports · 2022Article
- Fidelity varies in the symbiosis between a gutless marine worm and its microbial consortium.Microbiome · 2022Article
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Authors and funding
17 authors at 8 institutions in 5 countries.
Funding
Abstract
The scaly-foot snail (Chrysomallon squamiferum) inhabiting deep-sea hydrothermal vents in the Indian Ocean relies on its sulphur-oxidising gammaproteobacterial endosymbionts for nutrition and energy. In this study, we investigate the specificity, transmission mode, and stability of multiple scaly-foot snail populations dwelling in five vent fields with considerably disparate geological, physical and chemical environmental conditions. Results of population genomics analyses reveal an incongruent phylogeny between the endosymbiont and mitochondrial genomes of the scaly-foot snails in the five vent fields sampled, indicating that the hosts obtain endosymbionts via horizontal transmission in each generation. However, the genetic homogeneity of many symbiont populations implies that vertical transmission cannot be ruled out either. Fluorescence in situ hybridisation of ovarian tissue yields symbiont signals around the oocytes, suggesting that vertical transmission co-occurs with horizontal transmission. Results of in situ environmental measurements and gene expression analyses from in situ fixed samples show that the snail host buffers the differences in environmental conditions to provide the endosymbionts with a stable intracellular micro-environment, where the symbionts serve key metabolic functions and benefit from the host's cushion. The mixed transmission mode, symbiont specificity at the species level, and stable intracellular environment provided by the host support the evolutionary, ecological, and physiological success of scaly-foot snail holobionts in different vents with unique environmental parameters.
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