Enhancement of Nitrous Oxide Emissions in Soil Microbial Consortia via Copper Competition between Proteobacterial Methanotrophs and Denitrifiers
Jin Chang, Daehyun D. Kim, Jeremy D. Semrau, Ju Yong Lee, Hokwan Heo, Wenyu Gu, Sukhwan Yoon
Abstract
Proteobacterial methanotrophs—groups of microorganisms that utilize methane as a source of energy and carbon—have been known to utilize unique mechanisms to scavenge copper, namely, utilization of methanobactin, a polypeptide that binds copper with high affinity and specificity. Previously the possibility that copper sequestration by methanotrophs may lead to alteration of cuproenzyme-mediated reactions in denitrifiers and consequently increase emission of potent greenhouse gas N 2 O has been suggested in axenic and coculture experiments.
Topics & Concepts
MicroorganismAxenicNitrous oxideCopperEnvironmental chemistryChemistryAnaerobic oxidation of methaneMethaneEnergy sourceGreenhouse gasBacteriaMicrobial metabolismMicrobiologyBiologyFossil fuelEcologyOrganic chemistryGeneticsMicrobial metabolism and enzyme functionAnaerobic Digestion and Biogas ProductionMicrobial Fuel Cells and Bioremediation