What we study

Photo credit J. L. Macalady.

Acid Rock Drainage

Ayala-Muñoz, D. et al. (2020). Metagenomic and metatranscriptomic study of microbial metal resistance in an acidic pit lake. Microorganisms 8(9), 1350.

Grettenberger, C. L. et al.  (2020). Microbial population structure in a stratified, acidic pit lake in the Iberian Pyrite Belt. Geomicrobiology Journal 37(7), 623-634.

Grettenberger, C. L. et al. (2017). Efficient low-pH iron removal by a microbial iron oxide mound ecosystem at Scalp Level Run. Applied and Environmental Microbiology 83(7).

Jones, D. S. et al. (2015). Geochemical niches of Iron-oxidizing acidophiles in acidic coal mine drainage. Applied and Environmental Microbiology 81(4), 1242-1250.

 

Photo credit J. L. Macalady.

Sulfur Cycling

Nims, C. et al. (2019). Low frequency Raman Spectroscopy for micron-scale and in-vivo characterization of elemental sulfur in microbial samples. Scientific Reports 9(7971).

Kamermans, B. et al.  (2019). Elemental Sulfur Formation by Sulfuricurvum kujiense Is Mediated by Extracellular Organic Compounds. Frontiers in Microbiology 10.

Mansor, M. et al. (2018). Transport-Induced Spatial Patterns of Sulfur Isotopes (δ34S) as Biosignatures. Astrobiology 18(1), 59-72.

Hamilton, T. L. et al. (2016). Carbon and sulfur cycling below the chemocline in a meromictic lake and the identification of a novel taxonomic lineage in the FCB superphylum, Candidatus Aegiribacteria. Frontiers in Microbiology 7.

Zerkle, A. L. et al. (2016). Sulfur isotope values in the sulfidic Frasassi cave system, central Italy: A case study of a chemolithotrophic S-based ecosystem. Geochimica et Cosmochimica Acta 173, 373-386

Hamilton, T. L. et al. (2015). Metagenomic insights into S(0) precipitation in a terrestrial subsurface lithoautotrophic ecosystem. Frontiers in Microbiology 5.

Jones, D. S. et al. (2015). Fate of sulfide in the Frasassi cave system and implications for sulfuric acid speleogenesis. Chemical Geology 410, 21-27

Mansor, M. et al. (2015). Metabolic diversity and ecological niches of Achromatium populations revealed with single-cell genomic sequencing. Frontiers in Microbiology 6

Jones, D. S. et al. (2012). Community genomic analysis of an extremely acidophilic sulfur-oxidizing biofilm. ISME Journal 6(1), 158-170.

 

 

Photo credit J. L. Macalady.

Microbial Photosynthesis

Haas, S. et al. (2018). Low-light anoxygenic photosynthesis and Fe-S-biogeochemistry in a microbial mat. Frontiers in Microbiology 9.

Hamilton, T. L. et al. (2018). Cyanobacterial photosynthesis under sulfidic conditions: Insights from the isolate Leptolyngbya sp. strain hensonii. ISME Journal 12(2), 568-584.

Hamilton, T. L. et al. (2017). Microbial communities and organic biomarkers in a Proterozoic-analog sinkhole. Geobiology 16(6), 784-797.

Hamilton, T. L., Bryant, D. A., & Macalady, J. (2016). The role of biology in planetary evolution: Cyanobacterial primary production in low-oxygen Proterozoic oceans. Environmental Microbiology 18(2), 325-340.

Mansor, M., Schaperdoth, I., & Macalady, J. (2016). Draft genome sequence of lampenflora Chlorobium limicola strain Frasassi in a sulfidic cave system. Genome Announcements 4(3).

Hamilton, T. L. et al. (2014). Coupled reductive and oxidative sulfur cycling in the phototrophic plate of a meromictic lake. Geobiology 12(5), 451-468.

Microbial Ecology

Jones, D. S. et al. (2016). Biogeography of sulfur-oxidizing Acidithiobacillus populations in extremely acidic cave biofilms. ISME Journal 10(12), 2879-2891.

Macalady, J. et al. (2013). Energy, ecology and the distribution of microbial life. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 368(1622).

Dattagupta, S. et al. (2009). A recently evolved symbiosis between chemoautotrophic bacteria and a cave-dwelling amphipod. ISME Journal 3, 935-943.

Macalady, J. L. et al. (2008). Niche differentiation among sulfur-oxidizing bacterial populations in cave waters. ISME Journal 2(6), 590-601.

 

Microbial Interactions With Hydrocarbons

Nguyen, U. T. et al. (2018). The influence of pressure on crude oil biodegradation in shallow and deep Gulf of Mexico sediments. PLoS ONE 13(7).

Dawson, K. S. et al. (2013). Anaerobic biodegradation of the isoprenoid biomarkers pristane and phytane. ORGANIC GEOCHEMISTRY 65, 118-126.

Dawson, K. S. et al. (2012). Quantitative Fluorescence In Situ Hybridization Analysis of Microbial Consortia from a Biogenic Gas Field in Alaska’s Cook Inlet Basin. APPLIED AND ENVIRONMENTAL MICROBIOLOGY 78(10), 3599-3605.

Dawson, K. S., Freeman, K. H., & Macalady, J. (2012). Molecular characterization of core lipids from halophilic archaea grown under different salinity conditions. ORGANIC GEOCHEMISTRY 48, 1-8.

Macalady, J. L. et al. (2002). Population dynamics of type I and II methanotrophic bacteria in rice soils. Environmental Microbiology 4(3), 148-157.