Clermont Université, Universite Blaise Pascal, Laboratoire Microorganismes: Génome et Environnement, BP 10448, UMR CNRS 6023, 63000 Clermont-Ferrand, France.
Res Microbiol. 2011 Nov;162(9):832-47. doi: 10.1016/j.resmic.2011.06.004. Epub 2011 Jun 13.
The atmospheric concentration of methane (CH(4)), a major greenhouse gas, is mainly controlled by the activities of methane-producing (methanogens) and methane-consuming (methanotrophs) microorganisms. Freshwater lakes are identified as one of the main CH(4) sources, as it was estimated that they contribute to 6-16% of natural CH(4) emissions. It is therefore critical to better understanding the biogeochemical cycling of CH(4) in these ecosystems. In this paper, the effects of environmental factors on methanogenic and methanotrophic rates are reviewed and an inventory of the methanogens and methanotrophs at the genus/species level in freshwater lakes is given. We focus on the anaerobic oxidation of methane, which is a still poorly known process but increasingly reported in freshwater lakes.
大气中甲烷（CH(4)）的浓度主要由产甲烷菌（methanogens）和甲烷氧化菌（methanotrophs）的活动控制。淡水湖泊被认为是主要的 CH(4) 源之一，因为据估计它们贡献了自然 CH(4)排放的 6-16%。因此，更好地了解这些生态系统中 CH(4)的生物地球化学循环至关重要。本文综述了环境因素对产甲烷菌和甲烷氧化菌活性的影响，并列举了淡水湖泊中属/种水平的产甲烷菌和甲烷氧化菌。我们重点关注甲烷的厌氧氧化，这是一个仍知之甚少但在淡水湖泊中越来越多被报道的过程。
