N 2 O Hot Moments Were Not Driven by Changes in Nitrogen and Carbon Substrates or Changes in N Cycling Functional Genes

2021 ◽  
Author(s):  
H. A. Barrat ◽  
A. F. Charteris ◽  
K. Le Cocq ◽  
M. Abadie ◽  
I. M. Clark ◽  
...  
Keyword(s):  
N Cycling ◽  
Functional Genes ◽  
Carbon Substrates

Effect of grazing on the abundance of functional genes associated with N cycling in three types of grassland in Inner Mongolia

2014 ◽  
Vol 15 (3) ◽  
pp. 683-693 ◽  
Author(s):  
K. Ding ◽  
L. Zhong ◽  
X. P. Xin ◽  
Z. H. Xu ◽  
X. M. Kang ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
N Cycling ◽  
Functional Genes

scholarly journals Phylogeny and phylogeography of functional genes shared among seven terrestrial subsurface metagenomes reveal N-cycling and microbial evolutionary relationships

2014 ◽  
Vol 5 ◽  
Author(s):  
Maggie C. Y. Lau ◽  
Connor Cameron ◽  
Cara Magnabosco ◽  
C. Titus Brown ◽  
Faye Schilkey ◽  
...  
Keyword(s):  
N Cycling ◽  
Evolutionary Relationships ◽  
Functional Genes ◽  
Terrestrial Subsurface

Fertilization strategies affect soil properties and abundance of N-cycling functional genes in an acidic agricultural soil

2020 ◽  
Vol 156 ◽  
pp. 103704 ◽  
Author(s):  
Wen Xing Li ◽  
Chao Wang ◽  
Man Man Zheng ◽  
Ze Jiang Cai ◽  
Bo Ren Wang ◽  
...  
Keyword(s):  
Soil Properties ◽  
Agricultural Soil ◽  
N Cycling ◽  
Functional Genes

scholarly journals Responses of Functional Genes Involved In Nitrogen Cycling To Green Manuring In Different Paddy Soils In South China

2021 ◽  
Author(s):  
Shun Li ◽  
Hai Liang ◽  
Yun Wang ◽  
Zihan Zhang ◽  
Lei Zhang ◽  
...  
Keyword(s):  
South China ◽  
Green Manure ◽  
Field Experiments ◽  
Rice Yield ◽  
N Cycling ◽  
Chemical Fertilizer ◽  
Paddy Soils ◽  
Functional Genes ◽  
Soil Nitrification ◽  
Green Manuring

Abstract Aims We studied the effects of green manuring on the nitrogen (N) cycling process in different paddy soils.Methods Field experiments conducted in Hunan, Jiangxi, Henan and Fujian provinces in south China to investigate the responses of rice yield, soil properties, and functional genes involved in N cycling to green manuring. The field experiments had four treatments, i.e., no fertilizer application (NF), using milk vetch (Astragalus sinicus L.) as green manure without chemical fertilizer (GM), winter fallow and chemical fertilizer (CF), and a combination of green manure and chemical fertilizer (GMCF). Results The results showed that rice yield significantly increased in GMCF treatment. The copies of nifH gene significantly increased in GMCF in Jiangxi and Henan provinces. Ammonia oxidizing archaeal (AOA) amoA gene was predominant in all provinces compared with ammonia oxidizing bacterial (AOB). Compared with CF treatment, The copies of AOB-amoA gene were reduced in GMCF, indicating the inhibition of soil nitrification. The nirK gene was negatively correlated with SOM, TN, NH4+-N, NO3--N and AP, indicating that the positive effects of green manure on soil nutrients caused the inhibition of denitrification process. The nirK gene was the most critical factor influencing rice yield among the tested functional genes, with a relative influence of 63.5%. In comparison SOM was the most important factor (with a relative influence of 41.0%) among soil chemical properties. Conclusions In conclusion, the application of green manures changed the abundance of functional genes involved in the N cycling, and combined application with chemical fertilizer inhibited soil nitrification and denitrification.

Grazing promoted soil microbial functional genes for regulating C and N cycling in alpine meadow of the Qinghai-Tibetan Plateau

2020 ◽  
Vol 303 ◽  
pp. 107111 ◽  
Author(s):  
Shikui Dong ◽  
Yu Li ◽  
Hasbagan Ganjurjav ◽  
Qingzhu Gao ◽  
Xiaoxia Gao ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Alpine Meadow ◽  
N Cycling ◽  
Functional Genes ◽  
Soil Microbial ◽  
C And N ◽  
C And N Cycling

High Resolution Observations of Ion-Milling Induced Transformation in Synthetic Hollandses

1981 ◽  
Vol 39 ◽  
pp. 114-115 ◽  
Author(s):  
T. J. Headley
Keyword(s):  
High Resolution ◽  
Radioactive Waste Disposal ◽  
Ion Milling ◽  
Minor Elements ◽  
Waste Forms ◽  
Carbon Substrates ◽  
Structural Differences ◽  
Oxide Phases ◽  
Argon Ions ◽  
High Resolution Microscopy

Oxide phases having the hollandite structure have been identified in multiphase ceramic waste forms being developed for radioactive waste disposal. High resolution studies of phases in the waste forms described in Ref. [2] were initiated to examine them for fine scale structural differences compared to natural mineral analogs. Two hollandites were studied: a (Ba,Cs,K)-titan-ate with minor elements in solution that is produced in the waste forms, and a synthesized BaAl2Ti6O16 phase containing ∼ 4.7 wt% Cs2O. Both materials were consolidated by hot pressing at temperatures above 1100°C. Samples for high resolution microscopy were prepared both by ion-milling (7kV argon ions) and by crushing and dispersing the fragments on holey carbon substrates. The high resolution studies were performed in a JEM 200CX/SEG operating at 200kV.

Electroporation-mediated delivery of functional genes – a promising approach for non-viral-based gene therapy of the failing heart

2010 ◽  
Vol 58 (S 01) ◽  
Author(s):  
S Eigeldinger-Berthou ◽  
P Buntschu ◽  
A Frobert ◽  
S Cook ◽  
MN Giraud ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Functional Genes ◽  
Failing Heart

MSA ROEBLING MEDAL LECTURE: NITROGEN DIFFUSION IN MINERALS, WITH IMPLICATIONS FOR N CYCLING IN THE SOLID EARTH

2018 ◽  
Author(s):  
E. Bruce Watson ◽  
◽  
Daniele J. Cherniak ◽  
Maxwell S. Drexler ◽  
Morgan F. Schaller ◽  
...  
Keyword(s):  
Solid Earth ◽  
N Cycling ◽  
Nitrogen Diffusion

Photocatalytic Effect of Fe(III) on Oxidation of Two-Carbon Substrates Related to Natural Waters

1994 ◽  
Vol 59 (5) ◽  
pp. 1066-1076 ◽  
Author(s):  
Šárka Klementová ◽  
Dana M. Wagnerová
Keyword(s):  
Mathematical Model ◽  
Natural Waters ◽  
Substrate Oxidation ◽  
Quantum Yields ◽  
Ferric Ions ◽  
Photochemical Reduction ◽  
Photocatalytic Effect ◽  
Carbon Substrates ◽  
Glyoxalic Acid ◽  
The Common

The influence of ferric ions on photoinitiated reaction of dioxygen with two carbon organic acids, aldehydes and alcohols related to natural waters was demonstrated. Photocatalytic effect of ferric ions, i.e. photochemical reduction of Fe(III) as the catalyst generating step, has been found to be the common principal of these reactions. The overall quantum yields of the reactions are in the range from 0.3 to 1.2. A mathematical model designed for the mechanism of cyclic generation of catalyst in the singlet substrate oxidation by O2 was applied to the system glyoxalic acid + Fe(III); a fair agreement between the simulated and experimental kinetic curves was obtained. The experimental rate constant is 4.4 .10-4 s -1.

scholarly journals Legumes regulate grassland soil N cycling and its response to variation in species diversity and N supply but not CO 2

2019 ◽  
Author(s):  
Xiaorong Wei ◽  
Peter B. Reich ◽  
Sarah E. Hobbie
Keyword(s):  
Species Diversity ◽  
N Cycling ◽  
Soil N ◽  
Grassland Soil ◽  
N Supply
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