keyword
MENU ▼
Read by QxMD icon Read
search

Soil microbiology

keyword
https://www.readbyqxmd.com/read/29345852/cadmium-and-cadmium-tolerant-soil-bacteria-in-cacao-crops-from-northeastern-colombia
#1
Daniel Bravo, Sergio Pardo-Díaz, Javier Benavides-Erazo, Gersain Rengifo-Estrada, Olivier Braissant, Clara Leon-Moreno
AIMS: This research aims to assess total-cadmium soil content and microbiological aspects to understand the dynamics of culturable cadmium-tolerant bacteria (CdtB) in cacao soils from northeastern Colombia. METHODS AND RESULTS: An integration of inverted dish plating, Cd determination and a microcalorimetry assay (IMC) was carried out. A farm in Boyacá showed the highest level of total soil Cd (3.74 mg kg-1 ) followed by farms in Santander and Arauca (2.76 and 1...
January 18, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29313683/antimony-redox-biotransformation-in-the-subsurface-effect-of-indigenous-sb-v-respiring-microbiota
#2
Liying Wang, Li Ye, Yaqin Yu, Chuanyong Jing
Anaerobic microbiological antimonate [Sb(V)] respiration is a newly discovered process regulating the Sb redox transformation in soils. However, little is known about the role microbiological Sb(V) respiration plays in the fate of Sb in the subsurface, especially in the presence of sulfate and electron shuttles. Herein, we successfully enriched a Sb(V) reducing microbiota (SbRM) from the subsurface near an active Sb mine. SbRM was dominated by genus Alkaliphilus (18-36%), Clostridiaceae (17-18%), Tissierella (24-27%), and Lysinibacillus (16-37%)...
January 9, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29299803/initial-data-on-biological-activity-of-taiga-steppe-soils-in-the-lower-reaches-of-the-kolyma-river
#3
M V Schelchkova, S P Davydov, D G Fyodorov-Davydov, A I Davydova, G G Boeskorov, N G Solomonov
Microbiological and enzyme activities of extrazonal taiga-steppe soils in the lower reaches of the Kolyma River have been studied for the first time. Contrary to north-taiga cryometamorphic soils, predominating in the area, microbial cenoses under herb-sedge petrophytic and grass-sagebrush-herb thermophytic steppes are characterized by features typical for arid soils. The saturation of the soil profile with microorganisms is greater, and the development of actinomycetes is more intensive. The enzyme complex is characterized by high activity of dehydrogenases...
November 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/29290030/use-of-zeolite-to-neutralise-nickel-in-a-soil-environment
#4
Edyta Boros-Lajszner, Jadwiga Wyszkowska, Jan Kucharski
Nickel is a heavy metal which is a stable soil pollutant which is difficult to remediate. An attempt to reduce its impact on the environment can be made by changing its solubility. The right level of hydrogen ions and the content of mineral and organic colloids are crucial in this regard. Therefore, methods to neutralise heavy metals in soil are sought. There are no reports in the literature on the possibility of using minerals in the detoxication of a soil environment contaminated with metals. It is important to fill the gap in research on the effect of zeolites on the microbiological, biochemical and physicochemical properties of soils under pressure from heavy metals...
December 30, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29287211/chemical-and-microbiological-evaluation-of-novel-chemical-treatment-methods-for-acid-sulfate-soils
#5
Eva Högfors-Rönnholm, Stephan Christel, Krister Dalhem, Tom Lillhonga, Sten Engblom, Peter Österholm, Mark Dopson
Naturally occurring sulfide rich deposits are common along the northern Baltic Sea coast that when exposed to air, release large amounts of acid and metals into receiving water bodies. This causes severe environmental implications for agriculture, forestry, and building of infrastructure. In this study, we investigated the efficiency of ultrafine-grained calcium carbonate and peat (both separately and in combination) to mitigate acid and metal release. The experiments were carried out aerobically that mimicked summer conditions when the groundwater level is low and acid sulfate soils are exposed to oxygen, and anaerobically that is similar to autumn to spring conditions...
December 26, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29250122/estimating-the-health-risk-associated-with-the-use-of-ecological-sanitation-toilets-in-malawi
#6
Save Kumwenda, Chisomo Msefula, Wilfred Kadewa, Bagrey Ngwira, Tracy Morse
Use of Ecological Sanitation (EcoSan) sludge is becoming popular due to increasing price of organic fertilizers in Malawi; however, there is little evidence on the associated risks. Quantitative microbiological risk assessment (QMRA) was done to determine health risks associated with use of EcoSan. Pathogens considered included Escherichia coli (E. coli), Salmonella, and soil transmitted helminths (STHs). Exponential and Beta Poisson models were used to estimate the risk from helminthic and bacterial pathogens, respectively...
2017: Journal of Environmental and Public Health
https://www.readbyqxmd.com/read/29248213/effect-of-leaving-milk-trucks-empty-and-idle-for-6-h-between-raw-milk-loads
#7
Eva Kuhn, Lisbeth Meunier-Goddik, Joy G Waite-Cusic
The US Pasteurized Milk Ordinance (PMO) allows milk tanker trucks to be used repeatedly for 24 h before mandatory clean-in-place cleaning, but no specifications are given for the length of time a tanker can be empty between loads. We defined a worst-case hauling scenario as a hauling vessel left empty and dirty (idle) for extended periods between loads, especially in warm weather. Initial studies were conducted using 5-gallon milk cans (pilot-scale) as a proof-of-concept and to demonstrate that extended idle time intervals could contribute to compromised raw milk quality...
December 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29223812/could-saponins-be-used-to-enhance-bioremediation-of-polycyclic-aromatic-hydrocarbons-in-aged-contaminated-soils
#8
Marie Davin, Amandine Starren, Magali Deleu, Georges Lognay, Gilles Colinet, Marie-Laure Fauconnier
Polycyclic aromatic hydrocarbons (PAH) are persistent organic compounds of major concern that tend to accumulate in the environment, threatening ecosystems and health. Brownfields represent an important tank for PAHs and require remediation. Researches to develop bioremediation and phytoremediation techniques are being conducted as alternatives to environmentally aggressive, expensive and often disruptive soil remediation strategies. The objectives of the present study were to investigate the potential of saponins (natural surfactants) as extracting agents and as bioremediation enhancers on an aged-contaminated soil...
December 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/29215770/molecular-ecology-of-listeria-spp-salmonella-escherichia-coli-o157-h7-and-non-o157-shiga-toxin-producing-escherichia-coli-in-pristine-natural-environments-in-northern-colorado
#9
Christina A Ahlstrom, Clyde S Manuel, Henk C Den Bakker, Martin Wiedmann, Kendra K Nightingale
AIMS: Molecular subtyping is commonly used in foodborne disease surveillance and microbial source tracking. There is a knowledge gap regarding the molecular ecology of foodborne pathogens in non-food associated environments. The objective of this study was to isolate and subtype foodborne pathogens from pristine natural environments with minimal anthropogenic inputs. MATERIALS AND RESULTS: Five locations (wilderness areas) in Northern Colorado were sampled during the spring, summer, and fall over a two-year period...
December 7, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29207709/isolation-of-the-rare-opportunistic-yeast-saprochaete-capitata-from-clinical-samples-experience-from-a-tertiary-care-hospital-in-southern-india-and-a-brief-review-of-the-literature
#10
Umabala Pamidimukkala, Anuradha Kancharla, Sukanya Sudhaharan, Sadashivudu Gundeti, Surendra Mandarapu, Vamsi Krishna Nagalla, Sree Bhushan Raju, Sandhya Devi Karanam
Introduction: Saprochaete capitata (Teleomorph: Magnusiomyces capitatus) is a ubiquitous yeast found in environmental sources such as soil, water, air, plants and dairy products. It is also a part of the normal microbial flora in humans. The yeast is being increasingly reported as an opportunistic pathogen, especially in patients in the haemato-oncology setting, the infection being often mistakenly diagnosed as invasive candidiasis. Aim: To review the epidemiological, clinical and microbiological features of six patients admitted in our hospital over a period of 10 years (from January 2007 to December 2016), from whom Saprochaete capitata was isolated...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29192711/nitrification-in-a-soil-aquifer-treatment-system-comparison-of-potential-nitrification-and-concentration-profiles-in-the-vadose-zone
#11
Alexander Sopilniak, Roy Elkayam, Ovadia Lev
The oxidation of ammonium in the vadose zone of soil aquifer systems is discussed and examined by detailed analysis of the depth profiles of dissolved oxygen, nitrate and ammonium concentrations in the vadose zone of a soil-aquifer treatment (SAT) system of a municipal wastewater treatment system of the Tel Aviv metropolitan area. Nitrification kinetics and ammonium adsorption capacity studies show that neither the nitrification rate nor the ammonium adsorption capacity controls the capacity of the Shafdan SAT system for ammonium removal...
December 1, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29172968/the-sensitivity-of-soil-enzymes-microorganisms-and-spring-wheat-to-soil-contamination-with-carfentrazone-ethyl
#12
Monika Tomkiel, Małgorzata Baćmaga, Agata Borowik, Jadwiga Wyszkowska, Jan Kucharski
Herbicides pose a significant threat to the natural environment, in particular in soils that are most exposed to plant protection agents. Prolonged herbicide use leads to changes in soil metabolism and decreases soil productive potential. In this study, the influence of carfentrazone-ethyl (CE) on the microbiological and biochemical properties of soil and the yield of Triticum aestivum L. was evaluated. Carfentrazone-ethyl was applied to sandy loam (pHKCl - 7.0) in doses of 0.000, 0.264, 5.280, 10.56, 21.18, 42...
November 27, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29132086/strengthening-detoxication-impacts-of-coprinus-comatus-on-nickel-and-fluoranthene-co-contaminated-soil-by-bacterial-inoculation
#13
Xia Tang, Bingxin Liu, Qiusui Deng, Ruitao Zhang, Xue Li, Heng Xu
To develop an efficient and environmental-friendly approach to detoxicate nickel (Ni) and fluoranthene co-contaminated soil, the combined application of Coprinus comatus (C. comatus) with Serratia sp. FFC5 and/or Enterobacter sp. E2 was investigated. The pot experiment tested the influences of bacterial inoculation on the growth of C. comatus, content of Ni in C. comatus, Ni speciation in soil, fluoranthene dissipation, soil enzymatic activities, bacterial population and community structure. With the inoculation of bacteria, the fresh weights of C...
November 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29105039/evaluation-of-the-quality-and-quantity-of-compost-and-leachate-from-household-waterless-toilets-in-france
#14
Behzad Nasri, Florent Brun, Olivier Fouché
One of the most undesired wastes is the human excreta due to the socio-environmental pressure. Otherwise, the nutriments contained in human excreta could be used as fertilizers to enrich the soil. Familial waterless litter composting toilets (FWLCT) are an alternative for locations where a centralized sewerage network cannot be provided or where there is a lack of standard urban infrastructure including roads, electricity, and water supply. The scientific researches on the composting techniques, the methods of control of the composting processors, and the rate of produced leachate are very limited...
November 5, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29101684/high-altitude-hyper-arid-soils-of-the-central-andes-harbor-mega-diverse-communities-of-actinobacteria
#15
Alan T Bull, Hamidah Idris, Roy Sanderson, Juan Asenjo, Barbara Andrews, Michael Goodfellow
The data reported in this paper are among the first relating to the microbiology of hyper-arid, very high altitude deserts and they provide base line information on the structure of actinobacterial communities. The high mountain Cerro Chajnantor landscape of the Central Andes in northern Chile is exposed to the world's most intense levels of solar radiation and its impoverished soils are severely desiccated. The purpose of this research was to define the actinobacterial community structures in soils at altitudes ranging from 3000 to 5000 m above sea level...
November 3, 2017: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/29096960/copper-immobilization-by-biochar-and-microbial-community-abundance-in-metal-contaminated-soils
#16
Francisca Moore, María-Eugenia González, Naser Khan, Gustavo Curaqueo, Miguel Sanchez-Monedero, Joaquín Rilling, Esteban Morales, Marcelo Panichini, Ana Mutis, Milko Jorquera, Jaime Mejias, Juan Hirzel, Sebastián Meier
Biochar (BC) is gaining attention as a soil amendment that can remediate metal polluted soils. The simultaneous effects of BC on copper (Cu) mobility, microbial activities in soil using metallophytes have scarcely been addressed. The objective of this study was to evaluate the effects of biochar BCs on Cu immobilization and over soil microbial communities in a Cu-contaminated soil evaluated over a two-year trial. A Cu-contaminated soil (338mgkg(-1)) was incubated with chicken manure biochar (CMB) or oat hull biochar (OHB) at rates of 1 and 5% w/w...
October 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29079619/identification-of-heterotrophic-zinc-mobilization-processes-among-bacterial-strains-isolated-from-wheat-rhizosphere-triticum-aestivum-l
#17
Benjamin Costerousse, Laurie Schönholzer-Mauclaire, Emmanuel Frossard, Cécile Thonar
Soil and plant inoculation with heterotrophic Zinc Solubilizing Bacteria (ZSB) is considered as a promising approach for increasing zinc (Zn) phytoavailability and enhance crop growth and nutritional quality. It is nevertheless necessary to understand the underlying bacterial solubilization processes in order to predict their repeatability in inoculation strategies. Acidification via gluconic acid production remains the most reported process. In this study, wheat rhizosphere soil serial dilutions were plated onto several solid microbiological media supplemented with scarcely soluble Zn oxide (ZnO) and 115 putative Zn solubilizing isolates were directly detected based on the formation of solubilization halo around the colonies...
October 27, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29072060/risk-factors-for-hydatidiform-mole-is-husband%C3%A2-s-job-a-major-risk-factor
#18
Hourieh Shamshiri Milani, Morteza Abdollahi, Sara Torbati, Taha Asbaghi, Eznollah Azargashb
Background: The hydatidiform mole (HM) is a precancerous placenta considered as a gestational trophoblastic disease (GTD). It may convert to more invasive forms of gestational trophoblastic neoplasia (GTN), endangering women’s health by more severe complications. Most GTN cases originate from HM, which is associated with uterine bleeding, preeclampsia and thyroid problems. Its etiology has not been adequately explored, but some risk factors have been reported. The aim of the present study was to assess any relationships between molar pregnancy and factors including mothers’ and husbands’ occupations...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29062604/bacterial-and-fungal-communities-respond-differently-to-varying-tillage-depth-in-agricultural-soils
#19
Craig Anderson, Mike Beare, Hannah L Buckley, Gavin Lear
In arable cropping systems, reduced or conservation tillage practices are linked with improved soil quality, C retention and higher microbial biomass, but most long-term studies rarely focus on depths greater than 15 cm nor allow comparison of microbial community responses to agricultural practices. We investigated microbial community structure in a long-term field trial (12-years, Lincoln, New Zealand) established in a silt-loam soil over four depth ranges down to 30 cm. Our objectives were to investigate the degree of homogenisation of soil biological and chemical properties with depth, and to determine the main drivers of microbial community response to tillage...
2017: PeerJ
https://www.readbyqxmd.com/read/29053428/dust-bathing-behaviors-of-african-herbivores-and-the-potential-risk-of-inhalational-anthrax
#20
Zoe R Barandongo, John K E Mfune, Wendy C Turner
Anthrax in herbivorous wildlife and livestock is generally assumed to be transmitted via ingestion or inhalation of Bacillus anthracis spores. Although recent studies have highlighted the importance of the ingestion route for anthrax transmission, little is known about the inhalational route in natural systems. Dust bathing could aerosolize soilborne pathogens such as B. anthracis, exposing dust-bathing individuals to inhalational infections. We investigated the potential role of dust bathing in the transmission of inhalational anthrax to herbivorous wildlife in Etosha National Park, Namibia, an area with endemic seasonal anthrax outbreaks...
October 20, 2017: Journal of Wildlife Diseases
keyword
keyword
118911
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"