Author:
Słowakiewicz Mirosław,Perri Edoardo,Tagliasacchi Ezher,Działak Paweł,Borkowski Andrzej,Gradziński Michał,Kele Sándor,Tucker Maurice E.
Abstract
AbstractTravertines, which precipitate from high temperature water saturated with calcium carbonate, are generally considered to be dominated by physico-chemical and microbial precipitates. Here, as an additional influence on organomineral formation, metagenomic data and microscopic analyses clearly demonstrate that highly diverse viral, bacterial and archaeal communities occur in the biofilms associated with several modern classic travertine sites in Europe and Asia, along with virus-like particles. Metagenomic analysis reveals that bacteriophages (bacterial viruses) containing icosahedral capsids and belonging to the Siphoviridae, Myoviridae and Podoviridae families are the most abundant of all viral strains, although the bacteriophage distribution does vary across the sampling sites. Icosahedral shapes of capsids are also the most frequently observed under the microscope, occurring as non-mineralized through to mineralized viruses and virus-like particles. Viruses are initially mineralized by Ca-Si amorphous precipitates with subordinate Mg and Al contents; these then alter to nanospheroids composed of Ca carbonate with minor silicate 80–300 nm in diameter. Understanding the roles of bacteriophages in modern carbonate-saturated settings and related organomineralization processes is critical for their broader inclusion in the geological record and ecosystem models.
Publisher
Springer Science and Business Media LLC
Reference50 articles.
1. Ford, T. D. & Pedley, H. M. A review of tufa and travertine deposits of the world. Earth Sci. Rev. 41, 117–175 (1996).
2. Jones, B. & Renaut, R. W. Calcareous spring deposits in continental settings. In Developments in Sedimentology Vol. 61 (eds Alonso-Zarza, A. M. & Tanner, L. H.) 177–224 (Elsevier, 2010).
3. Pentecost, A. Travertine (Springer-Verlag, 2005). https://doi.org/10.1007/1-4020-3606-X.
4. Chafetz, H. S. & Folk, R. L. Travertines; depositional morphology and the bacterially constructed constituents. J. Sediment. Res. 54, 289–316 (1984).
5. Chafetz, H. S. & Guidry, S. A. Bacterial shrubs, crystal shrubs, and ray-crystal shrubs: Bacterial vs. abiotic precipitation. Sediment. Geol. 126, 57–74 (1999).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献