User profiles for Caitlin M. Gionfriddo

Caitlin M. Gionfriddo

Research Fellow, La Trobe University Albury-Wodonga
Verified email at latrobe.edu.au
Cited by 640

Microbial mercury methylation in Antarctic sea ice

CM Gionfriddo, MT Tate, RR Wick, MB Schultz… - Nature …, 2016 - nature.com
Atmospheric deposition of mercury onto sea ice and circumpolar sea water provides mercury
for microbial methylation, and contributes to the bioaccumulation of the potent neurotoxin …

Mercury methylation by metabolically versatile and cosmopolitan marine bacteria

…, CH Lamborg, SJ Hallam, CM Gionfriddo… - The ISME …, 2021 - academic.oup.com
Microbes transform aqueous mercury (Hg) into methylmercury (MeHg), a potent neurotoxin
that accumulates in terrestrial and marine food webs, with potential impacts on human health. …

Determining the reliability of measuring mercury cycling gene abundance with correlations with mercury and methylmercury concentrations

GA Christensen, CM Gionfriddo, AJ King… - … science & technology, 2019 - ACS Publications
Methylmercury (MeHg) is a bioaccumulative toxic contaminant in many ecosystems, but
factors governing its production are poorly understood. Recent work has shown that the …

[HTML][HTML] An improved hgcAB primer set and direct high-throughput sequencing expand Hg-methylator diversity in nature

CM Gionfriddo, AM Wymore, DS Jones… - Frontiers in …, 2020 - frontiersin.org
The gene pair hgcAB is essential for microbial mercury methylation. Our understanding of
its abundance and diversity in nature is rapidly evolving. In this study we developed a new …

Quantification of mercury bioavailability for methylation using diffusive gradient in thin-film samplers

…, NA Rivera, CM Gionfriddo… - … science & technology, 2018 - ACS Publications
Mercury-contaminated sediment and water contain various Hg species, with a small fraction
available for microbial conversion to the bioaccumulative neurotoxin monomethylmercury (…

Role of ester sulfate and organic disulfide in mercury methylation in peatland soils

…, SL Nicholas, JC Wasik, CM Gionfriddo… - … science & technology, 2022 - ACS Publications
We examined the composition and spatial correlation of sulfur and mercury pools in peatland
soil profiles by measuring sulfur speciation by 1s X-ray absorption near-edge structure …

[HTML][HTML] The effect of natural organic matter on mercury methylation by Desulfobulbus propionicus 1pr3

JW Moreau, CM Gionfriddo, DP Krabbenhoft… - Frontiers in …, 2015 - frontiersin.org
Methylation of tracer and ambient mercury ( 200 Hg and 202 Hg, respectively) equilibrated
with four different natural organic matter (NOM) isolates was investigated in vivo using the Hg-…

A consensus protocol for the recovery of mercury methylation genes from metagenomes

…, AG Bravo, CM Gionfriddo - Molecular Ecology …, 2023 - Wiley Online Library
Mercury (Hg) methylation genes (hgcAB) mediate the formation of the toxic methylmercury
and have been identified from diverse environments, including freshwater and marine …

Transcriptional Control of hgcAB by an ArsR-Like Regulator in Pseudodesulfovibrio mercurii ND132

CM Gionfriddo, AB Soren, AM Wymore… - Applied and …, 2023 - Am Soc Microbiol
The hgcAB gene pair encodes mercury (Hg) methylation capability in a diverse group of
microorganisms, but its evolution and transcriptional regulation remain unknown. Working from …

Pseudodesulfovibrio mercurii sp. nov., a mercury-methylating bacterium isolated from sediment

…, AB Soren, CM Gionfriddo, M Podar… - … of systematic and …, 2021 - microbiologyresearch.org
The sulfate-reducing, mercury-methylating strain ND132 T was isolated from the brackish
anaerobic bottom sediments of Chesapeake Bay, USA. Capable of high levels of mercury (Hg) …