Acetate synthesis in soil from a bavarian beech forest.

摘要: Soil obtained from a beech forest formed significant amounts of acetate when incubated in bicarbonate-buffered, mineral salt solution under anaerobic conditions at both 5 and 20°C (21 38 g per kg [dry weight] soil, respectively). At 20°C, following an 18-day lag period, rates 0.07 mmol synthesized (dry weight) soil day were observed. Acetate was not subject to immediate turnover; methane hydrogen during the time intervals (5°C, 335 days; 95 days) evaluated. The synthesis endogenous materials coincident with acetogenic potentials, i.e., capacity catalyze H2-dependent acetate. Hydrogen consumption directed towards methane. Collectively, these results suggest that acetogenesis may be underlying microbial activity this soil.