Mn3O4 Nanozyme Coating Accelerates Nitrate Reduction and Decreases N2O Emission during Photoelectrotrophic Denitrification by Thiobacillus denitrificans-CdS

2020 ◽  
Vol 54 (17) ◽  
pp. 10820-10830
Author(s):  
Xiangyu Chen ◽  
Qinyuan Feng ◽  
Quanhua Cai ◽  
Shaofu Huang ◽  
Yuqing Yu ◽  
...  
Keyword(s):  
Nitrate Reduction ◽  
N2o Emission ◽  
Thiobacillus Denitrificans

Agrobacterium fabrum C58 involved nitrate reductase NapA and antisense RNA NorR to denitrify

2020 ◽  
Vol 97 (1) ◽  
Author(s):  
Solène Lecomte ◽  
Xavier Nesme ◽  
Théophile Franzino ◽  
Camille Villard ◽  
Mariane Pivard ◽  
...  
Keyword(s):  
Nitrate Reductase ◽  
Small Rna ◽  
Nitrate Reduction ◽  
Antisense Rna ◽  
Root Colonization ◽  
N2o Emission ◽  
Positive Role ◽  
N2o Production ◽  
Denitrification Genes

ABSTRACT Agrobacterium fabrum C58 is a plant-associated bacterium that is able to denitrify under anoxic conditions. The cluster of denitrification genes harbored by this strain has been well characterized. It includes nir and nor operons encoding nitrite and nitric oxide reductases, respectively. However, the reductase involved in nitrate reduction has not yet been studied and little information is available on denitrification regulators in A. fabrum C58. In this study, we aimed to (i) characterize the nitrate reductase, (ii) determine its role in A. fabrum C58 fitness and root colonization and (ii) reveal the contribution of small RNA on denitrification regulation. By constructing a mutant strain defective for napA, we demonstrated that the reduction of nitrate to nitrite was catalyzed by the periplasmic nitrate reductase, NapA. We evidenced a positive role of NapA in A. fabrum C58 fitness and suggested that A. fabrum C58 is able to use components exuded by plant roots to respire anaerobically. Here, we showed that NorR small RNA increased the level of norCBQ mRNA and a decrease of NorR is correlated with a decrease in N2O emission. Together, our results underscore the importance of understanding the denitrification pathway at the strain level in order to develop strategies to mitigate N2O production at the microbial community level.

Nomenclature Abstract for Thiobacillus denitrificans (ex Beijerinck 1904) Kelly and Harrison 1989 emend. Kelly and Wood 2000.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Sarah Wigley ◽  
George M Garrity ◽  
Dorothea Taylor
Keyword(s):  
Thiobacillus Denitrificans

Removal of Nitrate and Sulfide from Wastewater by Thiobacillus denitrificans

2013 ◽  
Vol 19 (1) ◽  
pp. 175-178
Author(s):  
Xin WU ◽  
Jinzhong ZHAO
Keyword(s):  
Thiobacillus Denitrificans

Nitrate Reduction and Nitrite Utilization by Nitrifiers in an Unsaturated Hanford Sandy Loam

1975 ◽  
Vol 4 (2) ◽  
pp. 179-182 ◽  
Author(s):  
M. G. Volz ◽  
L. W. Belser ◽  
M. S. Ardakani ◽  
A. D. McLaren
Keyword(s):  
Nitrate Reduction ◽  
Sandy Loam

Rapid Nitrate Reduction Assay with Intact Microbial Cells or Spores

BIO-PROTOCOL ◽  
2014 ◽  
Vol 4 (12) ◽  
Author(s):  
Marco Fischer ◽  
Dörte Falke ◽  
R. Sawers
Keyword(s):  
Nitrate Reduction ◽  
Microbial Cells ◽  
Reduction Assay

NITRATE REDUCTION FROM TILE DRAINAGE IN A RESTORED OXBOW WETLAND

2016 ◽  
Author(s):  
Stephen J. Kalkhoff ◽  
◽  
Joseph Schubauer-Berigan
Keyword(s):  
Nitrate Reduction ◽  
Tile Drainage

Less N2O emission from newly high-yielding cultivars of winter wheat

2021 ◽  
Vol 320 ◽  
pp. 107557
Author(s):  
Huan Chen ◽  
Chengyan Zheng ◽  
Fu Chen ◽  
Yuqiang Qiao ◽  
Shizhou Du ◽  
...  
Keyword(s):  
Winter Wheat ◽  
N2o Emission
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