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Environ Microbiol Rep

Title:		"Acidophilic methanotrophs: Occurrence, diversity, and possible bioremediation applications"
Author(s):		Hwangbo M; Shao Y; Hatzinger PB; Chu KH;
Address:		"Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, Texas, USA. Aptim Federal Services, LLC, 17 Princess Road, Lawrenceville, New Jersey, USA"
Journal Title:		Environ Microbiol Rep
Year:		2023
Volume:		20230411
Issue:		4
Page Number:		265 - 281
DOI:		10.1111/1758-2229.13156
ISSN/ISBN:		1758-2229 (Electronic) 1758-2229 (Linking)
Abstract:		"Methanotrophs have been identified and isolated from acidic environments such as wetlands, acidic soils, peat bogs, and groundwater aquifers. Due to their methane (CH(4) ) utilization as a carbon and energy source, acidophilic methanotrophs are important in controlling the release of atmospheric CH(4) , an important greenhouse gas, from acidic wetlands and other environments. Methanotrophs have also played an important role in the biodegradation and bioremediation of a variety of pollutants including chlorinated volatile organic compounds (CVOCs) using CH(4) monooxygenases via a process known as cometabolism. Under neutral pH conditions, anaerobic bioremediation via carbon source addition is a commonly used and highly effective approach to treat CVOCs in groundwater. However, complete dechlorination of CVOCs is typically inhibited at low pH. Acidophilic methanotrophs have recently been observed to degrade a range of CVOCs at pH < 5.5, suggesting that cometabolic treatment may be an option for CVOCs and other contaminants in acidic aquifers. This paper provides an overview of the occurrence, diversity, and physiological activities of methanotrophs in acidic environments and highlights the potential application of these organisms for enhancing contaminant biodegradation and bioremediation"
Keywords:		"Biodegradation, Environmental *Wetlands Methane/metabolism *Groundwater/chemistry;"
Notes:		"MedlineHwangbo, Myung Shao, Yiru Hatzinger, Paul B Chu, Kung-Hui eng Research Support, U.S. Gov't, Non-P.H.S. Review 2023/04/12 Environ Microbiol Rep. 2023 Aug; 15(4):265-281. doi: 10.1111/1758-2229.13156. Epub 2023 Apr 11"