2006
DOI: 10.1111/j.1574-6941.1997.tb00395.x
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Turnover of propionate in methanogenic paddy soil

Abstract: Samples from planted Italian paddy soil exhibited most probable numbers (MPN) of about 107 anaerobic propionate utilizers. In anoxic soil slurries that were either unamended or amended with rice straw production of CH4 was measured together with concentrations of H2, acetate and propionate. After a lag phase, during which ferric iron was depleted, CH4 was produced at a constant rate which was slightly higher in the straw‐amended than in the unamended soil. Propionate concentrations were relatively low at about… Show more

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Cited by 60 publications
(15 citation statements)
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“…5). Such an accumulation has been reported to occur at comparable DG r levels in laboratory experiments with transiently elevated H 2 concentrations (Krylova et al, 1997;Yao and Conrad, 2001). An accumulation of H 2 is generally not observed in freshwater systems as H 2 levels rapidly equilibrate (Lovley and Goodwin, 1988).…”
Section: Constraints On Decompositionmentioning
confidence: 91%
See 1 more Smart Citation
“…5). Such an accumulation has been reported to occur at comparable DG r levels in laboratory experiments with transiently elevated H 2 concentrations (Krylova et al, 1997;Yao and Conrad, 2001). An accumulation of H 2 is generally not observed in freshwater systems as H 2 levels rapidly equilibrate (Lovley and Goodwin, 1988).…”
Section: Constraints On Decompositionmentioning
confidence: 91%
“…Conrad and Wetter, 1990). Second, we expected concentrations of acetate and propionate, which are turned over rapidly (Thebrath et al, 1993;Krylova et al, 1997), to increase with methanogenesis proceeding near such DG r thresholds. Finally, a decrease in the DG r of methanogenesis should slow down decomposition.…”
Section: Constraints On Decompositionmentioning
confidence: 98%
“…In paddy soils, acetate, formate, and propionate are the primary short-chain fatty acids produced during residue decomposition (Krylova et al 1997;Yao and Conrad 2001;Rui et al 2009;He et al 2010). Citrate and succinate are exuded from rice roots (Aulakh et al 2001;Hoffland et al 2006).…”
Section: Responsible Editor: Ji-zheng Hementioning
confidence: 99%
“…Acetate, which in nature is usually present at only very low concentrations, plays a key role as substrate for methanogenesis, iron reduction and sulfate reduction (Ward and Winfrey, 1985;Lovley, 1993;Zinder, 1993). Primary fermenting microorganisms seem to be the major producers of acetate (Chidthaisong et al, 1999), whereas secondary fermenting (Krylova et al, 1997) and chemolithotrophic homoacetogenic bacteria (Lovley and Klug, 1983) produce much smaller amounts. In anaerobic soils and sediments, analysis of stable carbon isotopes has been used for tracing and quantifying carbon flow (Sugimoto and Wada, 1993;Hornibrook et al, 2000).…”
Section: Introductionmentioning
confidence: 97%