Jennifer Macalady
Director of the Ecology Institute; Professor of Geosciences
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210 Deike
University Park, PA 16802 - jlm80@psu.edu
- 814-865-6330
Research Summary
Microbial interactions with earth materials: soils, sediments, solutes, atmospheric gases, minerals, and rocks. Early evolution of Earth’s biosphere, including photosynthesis and sulfur cycling. Microbial ecology, environmental omics, microbial biogeography.
Huck Affiliations
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Sulfur Iron Lakes Oxidation Sulfides Oxygen Photosynthesis Population Biofilms Carbon Genome Cyanobacteria Caves Biofilm Sulfates Nitrogen Sulfide History Metagenomics Microorganisms Drainage Ecosystem Biogeography Coal GenesMost Recent Publications
Organic Stabilization of Extracellular Elemental Sulfur in a Sulfurovum-Rich Biofilm: A New Role for Extracellular Polymeric Substances?
B. Kamermans, Jennifer Macalady, J. Cosmidis, Frontiers in Microbiology
Metagenome-Assembled Genomes from Appalachian Acid Mine Drainage Sites
Caden Williams, Jennifer Macalady, Christen Grettenberger, 2023, Microbiology Resource Announcements
Thiovibrio frasassiensis gen. nov., sp. nov., an autotrophic, elemental sulphur disproportionating bacterium isolated from sulphidic karst sediment, and proposal of Thiovibrionaceae fam. nov.
Heidi S. Aronson, Cais Thomas, Maia K. Bhattacharyya, Shaan R. Eckstein, Sophia R. Jensen, Roman A. Barco, Jennifer L. Macalady, Jan P. Amend, 2023, International Journal of Systematic Bacteriology
Convergent Community Assembly among Globally Separated Acidic Cave Biofilms
Daniel S. Jones, Irene Schaperdoth, Diana E. Northup, Rodolfo Gómez-Cruz, Jennifer L. Macalady, 2023, Applied and Environmental Microbiology
Carbonates in the Critical Zone
M. D. Covington, J. B. Martin, L. E. Toran, J. L. Macalady, N. Sekhon, P. L. Sullivan, A. García, J. B. Heffernan, W. D. Graham, 2023, Earth's Future
Microbial carbon, sulfur, iron, and nitrogen cycling linked to the potential remediation of a meromictic acidic pit lake
Diana Ayala-Munoz, Diana Ayala-Muñoz, Jennifer L. Macalady, Javier Sanchez-Espana, Javier Sánchez-España, Carmen Falagan, Carmen Falagán, Estelle Couradeau, William D. Burgos, 2022, ISME Journal on p. 2666–2679 (13 pages)
Novel Microorganisms Contribute to Biosulfidogenesis in the Deep Layer of an Acidic Pit Lake
Diana Ayala-Muñoz, Diana Ayala-Munoz, William Burgos, Javier Sánchez-España, Javier Sanchez-Espana, Carmen Falagán, Carmen Falagan, Estelle Couradeau, Jennifer L. Macalady, 2022, Frontiers in Bioengineering and Biotechnology on p. 1129 (14 pages)
Thousands of small, novel genes predicted in global phage genomes
Brayon J. Fremin, Ami S. Bhatt, Nikos C. Kyrpides, Aditi Sengupta, Alexander Sczyrba, Aline Maria da Silva, Alison Buchan, Amelie Gaudin, Andreas Brune, Ann M. Hirsch, Anthony Neumann, Ashley Shade, Axel Visel, Barbara Campbell, Brett Baker, Brian P. Hedlund, Byron C. Crump, Cameron Currie, Charlene Kelly, Chris Craft, Christina Hazard, Christopher Francis, Christopher W. Schadt, Colin Averill, Courtney Mobilian, Dan Buckley, Dana Hunt, Daniel Noguera, David Beck, David L. Valentine, David Walsh, Dawn Sumner, Despoina Lymperopoulou, Devaki Bhaya, Donald A. Bryant, Elise Morrison, Eoin Brodie, Erica Young, Erik Lilleskov, Eva Högfors-Rönnholm, Feng Chen, Frank Stewart, Graeme W. Nicol, Hanno Teeling, Harry R. Beller, Hebe Dionisi, Hui Ling Liao, J. Michael Beman, Jennifer Macalady, Monica Medina, 2022, Cell Reports
Organic Stabilization of Extracellular Elemental Sulfur in a Sulfurovum-Rich Biofilm: A New Role for Extracellular Polymeric Substances?
Brandi Cron, Jennifer L. Macalady, Julie Cosmidis, 2021, Frontiers in Microbiology
Functional redundancy imparts process stability to acidic Fe(II)-oxidizing microbial reactors
Diana Ayala-Muñoz, Rachel L. Simister, Sean A. Crowe, Jennifer L. Macalady, William D. Burgos, 2021, Environmental Microbiology on p. 3682-3694
Most-Cited Papers
The role of biology in planetary evolution: Cyanobacterial primary production in low-oxygen Proterozoic oceans
Trinity L. Hamilton, Donald A. Bryant, Jennifer L. Macalady, 2016, Environmental Microbiology on p. 325-340
Low frequency Raman Spectroscopy for micron-scale and in vivo characterization of elemental sulfur in microbial samples
Christine Nims, Brandi Cron, Maxwell Wetherington, Jennifer Macalady, Julie Cosmidis, 2019, Scientific Reports
Geochemical niches of Iron-oxidizing acidophiles in acidic coal mine drainage
Daniel S. Jones, Courtney Kohl, Christen Grettenberger, Lance N. Larson, William D. Burgos, Jennifer L. Macalady, 2015, Applied and Environmental Microbiology on p. 1242-1250
Metagenomic insights into S(0) precipitation in a terrestrial subsurface lithoautotrophic ecosystem
Trinity L. Hamilton, Daniel S. Jones, Irene Schaperdoth, Jennifer L. Macalady, 2014, Frontiers in Microbiology
Geochemical and temporal influences on the enrichment of acidophilic iron-oxidizing bacterial communities
Yizhi Sheng, Kyle Bibby, Christen Grettenberger, Bradley Kaley, Jennifer L. Macalady, Guangcai Wang, William D. Burgos, 2016, Applied and Environmental Microbiology on p. 3611-3621
Coupled reductive and oxidative sulfur cycling in the phototrophic plate of a meromictic lake
T. L. Hamilton, R. J. Bovee, V. Thiel, S. R. Sattin, W. Mohr, I. Schaperdoth, K. Vogl, W. P. Gilhooly, T. W. Lyons, L. P. Tomsho, S. C. Schuster, J. Overmann, D. A. Bryant, A. Pearson, J. L. Macalady, 2014, Geobiology on p. 451-468
Calcium isotopic fractionation in microbially mediated gypsum precipitates
Khadouja Harouaka, Muammar Mansor, Jennifer L. Macalady, Matthew S. Fantle, 2016, Geochmica et Cosmochimica Acta on p. 114-131
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
Trinity L. Hamilton, Roderick J. Bovee, Sarah R. Sattin, Wiebke Mohr, William P. Gilhooly, Timothy W. Lyons, Ann Pearson, Jennifer L. Macalady, 2016, Frontiers in Microbiology
Cyanobacterial photosynthesis under sulfidic conditions: Insights from the isolate Leptolyngbya sp. strain hensonii
Trinity L. Hamilton, Judith M. Klatt, Dirk De Beer, Jennifer L. Macalady, 2018, ISME Journal on p. 568-584
Sulfur isotope values in the sulfidic Frasassi cave system, central Italy: A case study of a chemolithotrophic S-based ecosystem
Aubrey L. Zerkle, Daniel S. Jones, James Farquhar, Jennifer L. Macalady, 2016, Geochmica et Cosmochimica Acta on p. 373-386
News Articles Featuring Jennifer Macalady
Jul 13, 2021
Macalady named Ecology Institute director
Microbe expert Jennifer Macalady replaces outgoing director Erica Smithwick, who oversaw the research unit for the past five years.
Full Article
May 13, 2020
Possible microbes in the Mariana Trench hint at life on Jupiter’s moon
During the 2012 DEEPSEA CHALLENGE expedition to the deepest part of the ocean, scientists spotted fuzzy mats that may be communities of bacteria clinging to the rocks.
Full Article
Dec 14, 2019
Dried-up slime may assist microbes survive briny waters on Mars
Slime could help microbe stowaways survive a trip to Mars– and thrive in the planet’s salty waters once they arrive. Biofilms, colonies of cells embedded in a gooey protective coating, live longer than single cells when exposed to Mars-like brines – and even longer when they are dried out first, as they would be after travelling through space.
Full Article