|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of different forms of nitrogen addition on microbial extracellular enzyme activity in temperate grassland soil显示文摘Background:Nitrogen(N)deposition alters litter decomposition and soil carbon(C)sequestration by influencing the microbial community and its enzyme activity.Natural atmospheric N deposition comprises of inorganic N(IN)and organic N(ON)compounds.However,most studies have focused on IN and its effect on soil C cycling,whereas the effect of ON on microbial enzyme activity is poorly understood.Here we studied the effects of different forms of externally supplied N on soil enzyme activities related to decomposition in a temperate steppe.Ammonium nitrate was chosen as IN source,whereas urea and glycine were chosen as ON sources.Different ratios of IN to ON(Control,10:0,7:3,5:5,3:7,and 0:10)were mixed with equal total amounts of N and then used to fertilize the grassland soils for 6 years.Results:Our results show that IN deposition inhibited lignin-degrading enzyme activity,such as phenol oxidase(POX)and peroxidase(PER),which may restrain decomposition and thus induce accumulation of recalcitrant organic C in grassland soils.By contrast,deposition of ON and mixed ON and IN enhanced most of the C-degrading enzyme activities,which may promote the organic matter decomposition in grassland soils.In addition,theβ-N-acetyl-glucosaminidase(NAG)activity was remarkably stimulated by fertilization with both IN and ON,maybe because of the elevated N availability and the lack of N limitation after long-term N fertilization at the grassland site.Meanwhile,differences in soil pH,soil dissolved organic carbon(DOC),and microbial biomass partially explained the differential effects on soil enzyme activity under different forms of N treatments.Conclusions:Our results emphasize the importance of organic N deposition in controlling soil processes,which are regulated by microbial enzyme activities,and may consequently change the ecological effect of N deposition.Thus,more ON deposition may promote the decomposition of soil organic matter thus converting C sequestration in grassland soils into a C source. | Lili Dong Björn Berg Weiping Gu Zhengwen Wang Tao Sun | 2022 | Ecological Processes2022，11，1： | 1 |
| 2 | 显示文摘 | Lu B Rutledge BJ Gu L | 1998 | J Exp Med1998，187，4： | 1 |
| 3 | The human P2X7 receptor and its role in innate immunity显示文摘 | Wiley JS Sluyter R Gu BJ | 2011 | Tissue Antigens2011，78，5： | 1 |
| 4 | An Arg307 to Gln polymorphism within the ATP-binding site causes loss of function of the human P2X7 receptor显示文摘 | Gu BJ Sluyter R Skarratt KK | 2004 | J Biol Chem2004，279，31： | 1 |
| 5 | Review on the qualitative and quantitative analysis of the mycotoxin citrinin显示文摘 | Xu BJ Jia XQ Gu LJ | | 0，，4： | 1 |
| 6 | Point mutations confer loss of ATP-induced human P2X(7) receptor function显示文摘 | Worthington RA Smart ML Gu BJ | 2002 | FEBS Lett2002，512，13： | 1 |
| 7 | Improving voiding efficiency in thediabetic rat by a 5-HT1A serotonin receptor agonist 显示文摘 | Gu BJ Wu G Si J | 2012 | Neurourol Urodyn2012，31，1： | 1 |
| 8 | Abnormalities in monocyte recruitment and cytokine expression in monocyte chemoattractant protein 1-deficient mice显示文摘 | Lu B Rutledge BJ Gu L | 1998 | J Exp Med1998，187，4： | 1 |
| 9 | In vitro evaluation of five core materials显示文摘 | Gu S Rasimick BJ Deutsch AS | 2007 | J Rosthodont2007，16，1： | 1 |
| 10 | Mesocorticolimbic circuits are impaired in chronic cocaine users as demonstrated by resting-state functional connectivity显示文摘 | Gu Hong Salmeron BJ Ross TJ | 2010 | NeuroImage2010，53，： | 1 |
| 11 | A Glu-496 to Ala polymorphism leads to loss of function of the human P2X7 receptor显示文摘 | Gu BJ Zhang W Worthington RA | 2001 | J Biot Chem2001，276，11： | 1 |
| 12 | In vitro evaluation of five core materials显示文摘 | Gu S Rasimick BJ Deutsch AS | 2007 | J Prosthodont2007，16，1： | 1 |
| 13 | A loss-of-function polymorphic mutation in the cytolytic P2X7 receptor gene and chronic lymphocytic leukaemia: a molecular study显示文摘 | Wiley JS Dao-Ung LP Gu BJ | 2002 | Lancet2002，359，9312： | 1 |
| 14 | In vitro evaluation of five core materials 显示文摘 | Gu S Rasimick BJ Deutsch AS | 2007 | J Prosthodont2007，16，1： | 1 |
| 15 | The P2X7-nonmuscle myosin membrane complex regulates phagocytosis of nonopsonized particles and bacteria by a pathway attenuated by extracellularATP 显示文摘 | Gu BJ Bernadette M Saunders C J | 2010 | Blood2010，115，： | 1 |
| 16 | Expression of P2X7 Purinoceptors on Human Lymphocytes and Monocytes: Evidence for Nonfunctional P2X7 Receptors显示文摘 | Gu BJ Zhang WY Bendall LJ Chessell IP Buell GN Wiley JS | 2000 | Am J Physiol2000，279，： | 1 |
| 17 | Maternal levels of prostacyclin, thromboxane, ICAM, and VCAbl in normal and preeclamptic pregnancies显示文摘 | Lewis DF Canzoneri BJ Gu Y | 2010 | Am J Reprod Immunol2010，64，6： | 1 |
| 18 | Monocyte chemoattractant protein- 1 显示文摘 | Gu L Tseng SC Rollins BJ | 1999 | Chem Immunol1999，72，： | 1 |
| 19 | An Arg307 to Gin polymorphism within the ATP -binding site causes loss of function of the human P2X7 receptor 显示文摘 | Gu BJ Sluyter R SkarRatt KK | 2004 | J Biol Chern2004，279，31： | 1 |
| 20 | Review on the qualitative and quantitative analysis of the mycotoxin citrinin显示文摘 | XU BJ JIA XQ GU LJ | 2006 | Food Control2006，17，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员