Macrophyte Controls on Urban Stream Microbial Metabolic Activity

2021 ◽  
Vol 55 (8) ◽  
pp. 4585-4596
Author(s):  
Paul Romeijn ◽  
David M. Hannah ◽  
Stefan Krause
Keyword(s):  
Metabolic Activity ◽  
Urban Stream ◽  
Microbial Metabolic Activity

scholarly journals Earthworm communities and microbial metabolic activity and diversity under conventional, feed and biogas cropping systems as affected by tillage practices

2022 ◽  
Vol 169 ◽  
pp. 104232
Author(s):  
Julia Denier ◽  
Michel-Pierre Faucon ◽  
Anne-Maïmiti Dulaurent ◽  
Julien Guidet ◽  
Léa Kervroëdan ◽  
...  
Keyword(s):  
Metabolic Activity ◽  
Cropping Systems ◽  
Tillage Practices ◽  
Microbial Metabolic Activity

scholarly journals Metabolic Current Production by an Oral Biofilm Pathogen Corynebacterium matruchotii

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3141
Author(s):  
Divya Naradasu ◽  
Waheed Miran ◽  
Akihiro Okamoto
Keyword(s):  
Metabolic Activity ◽  
High Resolution Mass Spectrometry ◽  
Electrode System ◽  
Human Pathogens ◽  
Oral Biofilm ◽  
Hydrogen Electrode ◽  
Production Capability ◽  
Current Production ◽  
The Impact ◽  
Microbial Metabolic Activity

The development of a simple and direct assay for quantifying microbial metabolic activity is important for identifying antibiotic drugs. Current production capabilities of environmental bacteria via the process called extracellular electron transport (EET) from the cell interior to the exterior is well investigated in mineral-reducing bacteria and have been used for various energy and environmental applications. Recently, the capability of human pathogens for producing current has been identified in different human niches, which was suggested to be applicable for drug assessment, because the current production of a few strains correlated with metabolic activity. Herein, we report another strain, a highly abundant pathogen in human oral polymicrobial biofilm, Corynebacterium matruchotii, to have the current production capability associated with its metabolic activity. It showed the current production of 50 nA/cm2 at OD600 of 0.1 with the working electrode poised at +0.4 V vs. a standard hydrogen electrode in a three-electrode system. The addition of antibiotics that suppress the microbial metabolic activity showed a significant current decrease (>90%), establishing that current production reflected the cellular activity in this pathogen. Further, the metabolic fixation of atomically labeled 13C (31.68% ± 2.26%) and 15N (19.69% ± 1.41%) confirmed by high-resolution mass spectrometry indicated that C. matruchotii cells were metabolically active on the electrode surface. The identified electrochemical activity of C. matruchotii shows that this can be a simple and effective test for evaluating the impact of antibacterial compounds, and such a method might be applicable to the polymicrobial oral biofilm on electrode surfaces, given four other oral pathogens have already been shown the current production capability.

Tillage frequency affects microbial metabolic activity and short-term changes in CO2 fluxes within 1 week in karst ecosystems

2019 ◽  
Vol 19 (10) ◽  
pp. 3453-3462
Author(s):  
Dan Xiao ◽  
Yingying Ye ◽  
Shuangshuang Xiao ◽  
Wei Zhang ◽  
Xunyang He ◽  
...  
Keyword(s):  
Metabolic Activity ◽  
Co2 Fluxes ◽  
Short Term ◽  
Karst Ecosystems ◽  
Microbial Metabolic Activity

Ridge-furrow with film mulching practice ameliorates soil microbial metabolic activity and carbon utilization in rhizosphere soil of rapeseed (Brassica napus L.)

2019 ◽  
Vol 19 (6) ◽  
pp. 2764-2776 ◽  
Author(s):  
Kangping Zhang ◽  
Yi Xing ◽  
Guiyin Wang ◽  
Ramadan Shemi ◽  
Meichun Duan ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Metabolic Activity ◽  
Rhizosphere Soil ◽  
Carbon Utilization ◽  
Brassica Napus L ◽  
Soil Microbial ◽  
Film Mulching ◽  
Microbial Metabolic Activity

The contribution of instream wood to streambed organic matter controls on microbial metabolic activity

2021 ◽  
Author(s):  
Ben Howard ◽  
Sami Ullah ◽  
Nick Kettridge ◽  
Ian Baker ◽  
Stefan Krause
Keyword(s):  
Organic Matter ◽  
Metabolic Activity ◽  
Ghg Emissions ◽  
Catchment Management ◽  
Turnover Rates ◽  
Nutrient Turnover ◽  
Instream Wood ◽  
The Impact ◽  
Microbial Metabolic Activity

<p>Microbial metabolic activity (MMA) in streambeds drives greenhouse gas (GHG) production and nutrient turnover. Previous research has identified that the quantity and quality of organic matter (OM) are important controls on MMA. Instream wood may make a significant contribution to the total OM content of the streambed, especially in forested streams, but it has typically been ignored or explicitly omitted in previous research. By means of an incubation experiment, we investigate the impact of streambed wood on MMA, GHG production and nutrient turnover rates. By using three geologies (sandstone, chalk and limestone) and allowing temperatures to fluctuate with environmental conditions, we observe these impacts under a range of typical scenarios. These results could have implications for estimates of GHG emissions from streams and inform catchment management, for example the impacts of direct installation of instream wood in river restoration or the indirect input as a result of riparian planting.</p>

Microcalorimetric measurements of microbial metabolic activity in sewage digesting systems

1981 ◽  
Vol 12 (4) ◽  
pp. 234-238 ◽  
Author(s):  
B. Redl ◽  
F. Tiefenbrunner
Keyword(s):  
Metabolic Activity ◽  
Microbial Metabolic Activity

Microarray-Based Techniques for Assessing In Situ Microbial Metabolic Activity

2002 ◽  
Vol 11 (3) ◽  
pp. 407-407
Author(s):  
Tyler S. Radniecki ◽  
Lisa G. Gregory ◽  
Roger L. Ely
Keyword(s):  
Metabolic Activity ◽  
Microbial Metabolic Activity

The Impact of Pore-Size Heterogeneities on the Spatiotemporal Variation of Microbial Metabolic Activity in Porous Media

Soil Science ◽  
2012 ◽  
Vol 177 (2) ◽  
pp. 98-110 ◽  
Author(s):  
Konstantin Stolpovsky ◽  
Mehdi Gharasoo ◽  
Martin Thullner
Keyword(s):  
Porous Media ◽  
Pore Size ◽  
Metabolic Activity ◽  
Spatiotemporal Variation ◽  
The Impact ◽  
Microbial Metabolic Activity

Plant species influence microbial metabolic activity and butachlor biodegradation in a riparian soil from Chongming Island, China

Geoderma ◽  
2013 ◽  
Vol 193-194 ◽  
pp. 165-171 ◽  
Author(s):  
Changming Yang ◽  
Wang Yulai ◽  
Mengmeng Wang ◽  
Haiyan Chen
Keyword(s):  
Plant Species ◽  
Metabolic Activity ◽  
Chongming Island ◽  
Microbial Metabolic Activity
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