News Column

Study Data from School of Environmental and Safety Engineering Provide New Insights into Enzymes and Coenzymes

June 17, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Enzymes and Coenzymes are presented in a new report. According to news reporting originating in Zhenjiang, People's Republic of China, by NewsRx journalists, research stated, "Acid rain pollution is changing gradually from sulfuric acid rain (SAR) to mixed acid rain (MAR) andthen to nitric acid rain (NAR) with the rapidly growing number of motor vehicles. The influences ofchanged acid rain types on ecosystem functions, particularly on litter decomposition, remain unclear."

The news reporters obtained a quote from the research from the School of Environmental and Safety Engineering, "Twodominant litter types from a coniferous forest and a broad-leaved forest were incubated in microcosmswith original forest soils and treated by five types of acid rain with different SO42-to NO3-ratios (1: 0,5:1, 1:1, 1:5, and 0: 1). During a six-month incubation period, litter mass losses, soil microbial biomass, and enzyme activities were investigated. Results showed that various acid treatments inhibited litterdecomposition, soil microbial biomass, and most enzyme activities, and the inhibitory effects of NAR weremore significant than those of SAR and MAR. The resistance to external acid of microbial communitiesin broad-leaved forest was higher than that in coniferous forest. NAR and MAR treatments slowed downsoil carbon (C), nitrogen (N), and phosphorus (P) mineralization by attenuating the correlations betweenlitter mass losses and the enzymes involved in C, N, and P cycling. Results reveal that the ratio of SO(4)(2)to NO3-in acid rain is an important factor which profoundly influences litter decomposition process. Inthe future, a decreasing ratio of SO42-to NO3-in acid rain will be observed in subtropical forests."

According to the news reporters, the research concluded: "Thus, soil C would accumulate as a consequence of future acid precipitation, and this may seriously affect thebalance of ecosystem C, N flux."

For more information on this research see: Effects of sulfuric, nitric, and mixed acid rain on litter decomposition, soil microbial biomass, and enzyme activities in subtropical forests of China. Applied Soil Ecology, 2014;79():1-9. Applied Soil Ecology can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Applied Soil Ecology -

Our news correspondents report that additional information may be obtained by contacting Y. Lv, Sch Environm & Safety Engn, Zhenjiang 212013, People's Republic of China. Additional authors for this research include C.Y. Wang, Y.Y. Jia, W.W. Wang, X. Ma, J.J. Du, G.Z. Pu and X.J. Tian (see also Enzymes and Coenzymes).

Keywords for this news article include: Zhenjiang, Enzymes and Coenzymes, People's Republic of China

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Source: Life Science Weekly

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