Publications by authors named "Elizabeth Ricci"
Carbonate rocks at marine methane seeps are commonly colonized by sulfur-oxidizing bacteria that co-occur with etch pits that suggest active dissolution. We show that sulfur-oxidizing bacteria are abundant on the surface of an exemplar seep carbonate collected from Del Mar East Methane Seep Field, USA. We then used bioreactors containing aragonite mineral coupons that simulate certain seep conditions to investigate plausible in situ rates of carbonate dissolution associated with sulfur-oxidizing bacteria.
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- The largest known bacteria, spp., have not yet been isolated in pure culture, but their size allows for individual cell monitoring and sorting for metabolic studies.
- A novel tetrazolium-based dye was used to assess the oxidoreductase activity of individual spp. cells, enabling tracking of metabolic responses without observable cell division.
- The study found that spp. displayed the most metabolic versatility under anoxic conditions, suggesting a mixotrophic metabolism supported by genomic data, and indicated potential interactions with attached bacteria.