RE: ICMGP Special Session Call for Abstracts
Eric Capo
Envoyé : jeudi 10 février 2022 16:10
À : Maria Soledad Goni Urriza <mariso...@univ-pau.fr>; Andrea G Bravo <andrea...@icm.csic.es>; Eric Capo <eric...@hotmail.fr>; Heyu Lin <heyu...@student.unimelb.edu.au>; John Moreau <John....@glasgow.ac.uk>; spencer...@gmail.com <spencer...@gmail.com>; Roth, Spencer <rot...@ornl.gov>; Tamar Barkay <tamar....@rutgers.edu>; Pierce, Eric <pier...@ornl.gov>; Carrell, Alyssa <carr...@ornl.gov>; Cregger, Melissa <creg...@ornl.gov>; Caroline Pierce <pier...@umn.edu>; Dan Jones <daniel....@nmt.edu>; Alexandre Poulain <apou...@uottawa.ca>
Cc : Ben Peterson <bpete...@wisc.edu>; Gilmour, Cynthia <gilm...@si.edu>
Objet : ICMGP Special Session Call for Abstracts
Hi all,
Our special session has been accepted for ICMGP 2022 (held virtually in July)! We are hoping the session’s theme is of interest to you, and we’d love to have you submit an abstract to this session. Abstracts are due February 28. When submitting an abstract, select the special session from the drop-down menu. See below for session information. Please feel free to share with your own networks.
Thank you!
Caitlin
Meta-omic and geochemical approaches to linking microbial activity to biogeochemical Hg cycling
The balance between microbial methylmercury production and demethylation in natural ecosystems is a key step in controlling the uptake of mercury into food webs. Several biophysicochemical parameters regulate environmental MeHg production and degradation. A
major goal in mercury research is to characterize the biogeochemical conditions that facilitate net mercury methylation. Microorganisms play a significant role in mediating mercury transformations in aquatic ecosystems. Net MeHg production depends on activity
of the hgcAB+ community and is offset by microbial-driven or abiotic demethylation of MeHg and/or reduction of Hg(II) to Hg(0). Other abiotic and biotic mechanisms influence mercury cycling, including redox potential, Hg(II) complexation with ligands,
and availability of metabolites that affect microbial community composition and activity. The metabolic activity of the mercury-cycling organisms provides a direct link between biogeochemical cycling and the net production of methylmercury. The discovery
of the mercury methylation genes (hgcAB) in parallel with advancements in microbial ecology techniques has led to a rapid expansion in the number and diversity of known organisms with the potential to methylate mercury. A critical step in the field
will be to translate this knowledge into a mechanistic understanding of the microbes that mediate this process in complex communities. The aim of this session is to highlight work utilizing molecular and meta-omic techniques alongside geochemical measurements
to examine the link between microbial dynamics (i.e. community composition, abundance, activity) and mercury cycling. We are especially interested in studies that expand our understanding of biogeochemical constraints on mercury methylation.
Co-chairs:
Caitlin Gionfriddo, Benjamin Peterson, Cynthia Gilmour
--
Caitlin Gionfriddo (Ph.D.)
Biologist, Secretary's Scholar
Smithsonian Environmental Research Center
Edgewater, MD 21037
T: 443-482-2389 E: gionf...@si.edu
(she/her/hers)
