ArticleRoyal Society open science2016
Surfing the vegetal pole in a small population: extracellular vertical transmission of an 'intracellular' deep-sea clam symbiont.
Article in Royal Society open science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- The Host-Symbiont-Pathogen Triad inMarine drugs · 2026Review
- Ultra-accurate sequencing reveals an extreme transmission bottleneck in a deep-sea clam symbiosis.bioRxiv : the preprint server for biology · 2026Article
- A novel bioenergetic model outlines the metabolism of a deep-sea clam and that of its sulfur-oxidizing symbionts.Scientific reports · 2026Article
- Symbiont Acquisition Strategies in Post-Settlement Stages of Two Co-Occurring Deep-SeaEcology and evolution · 2024Article
- The source of microbial transmission influences niche colonization and microbiome development.Proceedings. Biological sciences · 2024Article
- Endosymbiont population genomics sheds light on transmission mode, partner specificity, and stability of the scaly-foot snail holobiont.The ISME journal · 2022Article
- Symbiont Community Composition inApplied and environmental microbiology · 2022Article
- Host-Endosymbiont Genome Integration in a Deep-Sea Chemosymbiotic Clam.Molecular biology and evolution · 2021Article
- Horizontal transmission and recombination maintain forever young bacterial symbiont genomes.PLoS genetics · 2020Article
- Host hybridization as a potential mechanism of lateral symbiont transfer in deep-sea vesicomyid clams.Molecular ecology · 2019Article
- Transmission strategies in a chemosynthetic symbiosis: detection and quantification of symbionts in host tissues and their environment.Proceedings. Biological sciences · 2018Article
- Ancient Occasional Host Switching of Maternally Transmitted Bacterial Symbionts of Chemosynthetic Vesicomyid Clams.Genome biology and evolution · 2017Article
- Geographical structure of endosymbiotic bacteria hosted by Bathymodiolus mussels at eastern Pacific hydrothermal vents.BMC evolutionary biology · 2017Article
Corrections and comments
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Authors and funding
14 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Symbiont transmission is a key event for understanding the processes underlying symbiotic associations and their evolution. However, our understanding of the mechanisms of symbiont transmission remains still fragmentary. The deep-sea clam Calyptogena okutanii harbours obligate sulfur-oxidizing intracellular symbiotic bacteria in the gill epithelial cells. In this study, we determined the localization of their symbiont associating with the spawned eggs, and the population size of the symbiont transmitted via the eggs. We show that the symbionts are located on the outer surface of the egg plasma membrane at the vegetal pole, and that each egg carries approximately 400 symbiont cells, each of which contains close to 10 genomic copies. The very small population size of the symbiont transmitted via the eggs might narrow the bottleneck and increase genetic drift, while polyploidy and its transient extracellular lifestyle might slow the rate of genome reduction. Additionally, the extracellular localization of the symbiont on the egg surface may increase the chance of symbiont exchange. This new type of extracellular transovarial transmission provides insights into complex interactions between the host and symbiont, development of both host and symbiont, as well as the population dynamics underlying genetic drift and genome evolution in microorganisms.
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