scholarly journals Diversity and Enzyme Activity of Ectomycorrhizal Fungal Communities Following Nitrogen Fertilization in an Urban-Adjacent Pine Plantation

Forests ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 99 ◽  
Author(s):  
Chen Ning ◽  
Gregory Mueller ◽  
Louise Egerton-Warburton ◽  
Andrew Wilson ◽  
Wende Yan ◽  
...  
RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 37667-37676
Author(s):  
Jishao Jiang ◽  
Yang Wang ◽  
Dou Yu ◽  
Jingyu Li ◽  
Jin Han ◽  
...  

Adding UI was effective for nitrogen conservation and the increase of enzyme activity during biosolid composting.


Soil Science ◽  
2004 ◽  
Vol 169 (10) ◽  
pp. 708-714 ◽  
Author(s):  
Christopher J. Matocha ◽  
Gerald R. Haszler ◽  
John H. Grove

2009 ◽  
Vol 70 (3) ◽  
pp. 388-401 ◽  
Author(s):  
Dimitrios G. Karpouzas ◽  
Constantina Rousidou ◽  
Kalliope K. Papadopoulou ◽  
Fotios Bekris ◽  
Georgios I. Zervakis ◽  
...  

2013 ◽  
Vol 67 ◽  
pp. 285-294 ◽  
Author(s):  
Luciano Avio ◽  
Maurizio Castaldini ◽  
Arturo Fabiani ◽  
Stefano Bedini ◽  
Cristiana Sbrana ◽  
...  

1994 ◽  
Vol 24 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Mark S. Castro ◽  
William T. Peterjohn ◽  
Jerry M. Melillo ◽  
Paul A. Steudler ◽  
Henry L. Gholz ◽  
...  

We measured fluxes of N2O, CH4 and CO2 from control and urea-nitrogen fertilized soils of a mature slash pine (Pinuselliottii var. elliottii Englem.) plantation in Alachua County, Florida. The fertilization did not affect CO2 emissions, but significantly increased the emissions of N2O and lowered the uptake of atmospheric CH4. Daily average N2O emissions from the fertilized soils were 8–600 times higher (12–74 μg N2O-N•m−2•h−1) than daily average N2O emissions from control soils (0.02–4.0 μg N2O-N•m−2•h−1). Daily average CH4 uptake by the fertilized soils were 5–20 times lower (0.001–0.007 mg CH4-C•m−2•h−1) than daily average CH4 uptake by control soils (0.015–0.035 mg CH4-C•m−2•h−1). We also measured the relative activities of the bacteria populations that were responsible for CH4 oxidation in the control and fertilized soils. Results from these measurements suggest that fertilization shifted the relative activities of the CH4 oxidizing bacteria from those dominated by methanotrophs in the control soils to those dominated by nitrifying bacteria in the surface (0–2 cm) of the fertilized soils. The shift in relative activities of these bacteria may have been responsible for the lower CH4 uptake by the fertilized soils.


Author(s):  
S.M. Geyer ◽  
C.L. Mendenhall ◽  
J.T. Hung ◽  
E.L. Cardell ◽  
R.L. Drake ◽  
...  

Thirty-three mature male Holtzman rats were randomly placed in 3 treatment groups: Controls (C); Ethanolics (E); and Wine drinkers (W). The animals were fed synthetic diets (Lieber type) with ethanol or wine substituted isocalorically for carbohydrates in the diet of E and W groups, respectively. W received a volume of wine which provided the same gram quantity of alcohol consumed by E. The animals were sacrificed by decapitation after 6 weeks and the livers processed for quantitative triglycerides (T3), proteins, malic enzyme activity (MEA), light microscopy (LM) and electron microscopy (EM). Morphometric analysis of randomly selected LM and EM micrographs was performed to determine organellar changes in centrilobular (CV) and periportal (PV) regions of the liver. This analysis (Table 1) showed that hepatocytes from E were larger than those in C and W groups. Smooth endoplasmic reticulum decreased in E and increased in W compared to C values.


Sign in / Sign up

Export Citation Format

Share Document