Michaelis Walter, Seifert Richard, Nauhaus Katja, Treude Tina, Thiel Volker, Blumenberg Martin, Knittel Katrin, Gieseke Armin, Peterknecht Katharina, Pape Thomas, Boetius Antje, Amann Rudolf, Jørgensen Bo Barker, Widdel Friedrich, Peckmann Jörn, Pimenov Nikolai V, Gulin Maksim B
Institute of Biogeochemistry and Marine Chemistry, University of Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany.
Science. 2002 Aug 9;297(5583):1013-5. doi: 10.1126/science.1072502.
Massive microbial mats covering up to 4-meter-high carbonate buildups prosper at methane seeps in anoxic waters of the northwestern Black Sea shelf. Strong 13C depletions indicate an incorporation of methane carbon into carbonates, bulk biomass, and specific lipids. The mats mainly consist of densely aggregated archaea (phylogenetic ANME-1 cluster) and sulfate-reducing bacteria (Desulfosarcina/Desulfococcus group). If incubated in vitro, these mats perform anaerobic oxidation of methane coupled to sulfate reduction. Obviously, anaerobic microbial consortia can generate both carbonate precipitation and substantial biomass accumulation, which has implications for our understanding of carbon cycling during earlier periods of Earth's history.
在黑海西北部陆架缺氧水域的甲烷渗漏处，覆盖高达4米的碳酸盐堆积物的巨大微生物垫繁盛生长。强烈的13C亏损表明甲烷碳被纳入碳酸盐、总生物量和特定脂质中。这些微生物垫主要由紧密聚集的古菌（系统发育ANME-1簇）和硫酸盐还原细菌（脱硫弧菌/脱硫球菌群）组成。如果在体外培养，这些微生物垫会进行与硫酸盐还原耦合的甲烷厌氧氧化。显然，厌氧微生物群落既能产生碳酸盐沉淀，又能积累大量生物量，这对我们理解地球历史早期的碳循环具有重要意义。
