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https://www.readbyqxmd.com/read/28688360/microbial-functional-diversity-responses-to-2-years-since-biochar-application-in-silt-loam-soils-on-the-loess-plateau
#1
Li-Xia Zhu, Qian Xiao, Yu-Fang Shen, Shi-Qing Li
The structure and function of soil microbial communities have been widely used as indicators of soil quality and fertility. The effect of biochar application on carbon sequestration has been studied, but the effect on soil microbial functional diversity has received little attention. We evaluated effects of biochar application on the functional diversities of microbes in a loam soil. The effects of biochar on microbial activities and related processes in the 0-10 and 10-20cm soil layers were determined in a two-year experiment in maize field on the Loess Plateau in China...
July 5, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28585175/nematicidal-effect-of-rhizobacteria-on-plant-parasitic-nematodes-associated-with-vineyards
#2
E Aballay, S Prodan, A Zamorano, C Castaneda-Alvarez
The action of metabolites and exoenzymes from rhizobacteria on different plant-parasitic nematodes has an influence on the nematicidal efficacy of the microbe. Seven rhizobacteria, divided into two bacterial groups, were evaluated in vitro for nematicidal activity on Meloidogyne ethiopica and Xiphinema index. The direct effect of their filtrates on egg hatching and juveniles of M. ethiopica as well as mobile stages of X. index was evaluated during a 72-h period. The production of four exoenzymes and two metabolites associated with nematode mortality was investigated...
July 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28581020/insights-into-the-fecal-microbiota-of-captive-iberian-lynx-lynx-pardinus
#3
José Alberto Núñez-Díaz, M Carmen Balebona, Eva M Alcaide, Irene Zorrilla, Miguel Ángel Moriñigo
The Iberian lynx (Lynx pardinus) is an endangered species restricted to several areas of Spain and Portugal. Its low genetic diversity likely provokes immune depression and high susceptibility to infectious diseases. The intestinal microbiota is closely related to host health and nutrition. In order to contribute to the knowledge of the Iberian lynx intestinal microbiota, fecal microbiota of captive specimens from two breeding centers ("La Olivilla" and "El Acebuche"), located in Southern Spain, were studied by Denaturing Gradient Gel Electrophoresis (DGGE)...
March 2017: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://www.readbyqxmd.com/read/28432990/influence-of-red-mud-on-soil-microbial-communities-application-and-comprehensive-evaluation-of-the-biolog-ecoplate-approach-as-a-tool-in-soil-microbiological-studies
#4
Viktória Feigl, Éva Ujaczki, Emese Vaszita, Mónika Molnár
Red mud can be applied as soil ameliorant to acidic, sandy and micronutrient deficient soils. There are still knowledge gaps regarding the effects of red mud on the soil microbial community. The Biolog EcoPlate technique is a promising tool for community level physiological profiling. This study presents a detailed evaluation of Biolog EcoPlate data from two case studies. In experiment "A" red mud from Ajka (Hungary) was mixed into acidic sandy soil in soil microcosms at 5-50 w/w%. In experiement "B" red mud soil mixture was mixed into low quality subsoil in a field experiment at 5-50 w/w%...
October 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28429833/the-microbially-mediated-soil-organic-carbon-loss-under-degenerative-succession-in-an-alpine-meadow
#5
Yuguang Zhang, Xiao Liu, Jing Cong, Hui Lu, Yuyu Sheng, Xiulei Wang, Diqiang Li, Xueduan Liu, Huaqun Yin, Jizhong Zhou, Ye Deng
Land-cover change has long been recognized as having marked effect on the amount of soil organic carbon (SOC). However, the microbially mediated processes and mechanisms on SOC are still unclear. In this study, the soil samples in a degenerative succession from alpine meadow to alpine steppe meadow in the Qinghai-Tibetan Plateau were analysed using high-throughput technologies, including Illumina sequencing and geochip functional gene arrays. The soil microbial community structure and diversity were significantly (p < ...
April 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28395259/effects-of-18-pharmaceuticals-on-the-physiological-diversity-of-edaphic-microorganisms
#6
Mª Rosa Pino-Otín, Selene Muñiz, Jonatan Val, Enrique Navarro
Pharmaceutical residues can enter the terrestrial environment through the application of recycled water and contaminated biosolids to agricultural soils, were edaphic microfauna can would be threatened. This study thus assessed the effect of 18 widely consumed pharmaceuticals, belonging to four groups: antibiotics, non-steroidal anti-inflammatory drugs (NSAIDs), blood lipid-lowering agents (BLLA) and β-blockers, on the physiology of soil microbial communities from a ecological crop field. Biolog EcoPlates, containing 31 of the most common carbon sources found in forest and crop soils, were used to calculate both the averaged well colour development (AWCD), as an indicator of the entire capacity of degrading carbon sources, and the diversity of carbon source utilization, as an indicator of the physiological diversity...
October 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28300176/nanoscale-zero-valent-iron-persulfate-enhanced-upflow-anaerobic-sludge-blanket-reactor-for-dye-removal-insight-into-microbial-metabolism-and-microbial-community
#7
Fei Pan, Xiaohan Zhong, Dongsheng Xia, Xianze Yin, Fan Li, Dongye Zhao, Haodong Ji, Wen Liu
This study investigated the efficiency of nanoscale zero-valent iron combined with persulfate (NZVI/PS) for enhanced degradation of brilliant red X-3B in an upflow anaerobic sludge blanket (UASB) reactor, and examined the effects of NZVI/PS on anaerobic microbial communities during the treatment process. The addition of NZVI (0.5 g/L) greatly enhanced the decolourization rate of X-3B from 63.8% to 98.4%. The Biolog EcoPlate(TM) technique was utilized to examine microbial metabolism in the reactor, and the Illumina MiSeq high-throughput sequencing revealed 22 phyla and 88 genera of the bacteria...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28289836/prokaryotic-abundance-and-activity-in-permafrost-of-the-northern-victoria-land-and-upper-victoria-valley-antarctica
#8
Rosabruna La Ferla, Maurizio Azzaro, Luigi Michaud, Gabriella Caruso, Angelina Lo Giudice, Rodolfo Paranhos, Anderson S Cabral, Antonella Conte, Alessandro Cosenza, Giovanna Maimone, Maria Papale, Alessandro Ciro Rappazzo, Mauro Guglielmin
Victoria Land permafrost harbours a potentially large pool of cold-affected microorganisms whose metabolic potential still remains underestimated. Three cores (BC-1, BC-2 and BC-3) drilled at different depths in Boulder Clay (Northern Victoria Land) and one sample (DY) collected from a core in the Dry Valleys (Upper Victoria Valley) were analysed to assess the prokaryotic abundance, viability, physiological profiles and potential metabolic rates. The cores drilled at Boulder Clay were a template of different ecological conditions (different temperature regime, ice content, exchanges with atmosphere and with liquid water) in the same small basin while the Dry Valleys site was very similar to BC-2 conditions but with a complete different geological history and ground ice type...
March 13, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28054272/enhanced-bacterial-affinity-of-pvdf-membrane-its-application-as-improved-sea-water-sampling-tool-for-environmental-monitoring
#9
Sweta Binod Kumar, Preeti Sharnagat, Paramita Manna, Amit Bhattacharya, Soumya Haldar
Isolation of diversified bacteria from seawater is a major challenge in the field of environmental microbiology. In the present study, an attempt has been made to select specific membrane with improved property of attaching diversified bacteria. Initially, different concentrations (15, 18, and 20% W/W) of polysulfone (PSF) were used to check their affinity for the attachment of selected gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacteria. Among these, 20% W/W PSF showed maximum attachment...
February 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28011364/functionality-of-microbial-communities-in-constructed-wetlands-used-for-pesticide-remediation-influence-of-system-design-and-sampling-strategy
#10
Tao Lv, Pedro N Carvalho, Liang Zhang, Yang Zhang, Mark Button, Carlos A Arias, Kela P Weber, Hans Brix
The objective of this study was to compare the microbial community metabolic function from both unsaturated and saturated constructed wetland mesocosms (CWs) when treating the pesticide tebuconazole. The comparison was performed for both interstitial water and substrate biofilm by community level physiological profiling (CLPP) via BIOLOG™ EcoPlates. For each CW design (saturated or unsaturated), six mesocosms were established including one unplanted and five planted individually with either Juncus effusus, Typha latifolia, Berula erecta, Phragmites australis or Iris pseudacorus...
March 1, 2017: Water Research
https://www.readbyqxmd.com/read/27807655/profile-of-citrobacter-freundii-st2-a-multi-acyl-homoserine-lactone-producer-associated-with-marine-dinoflagellates
#11
Xinqi Huang, Yan Gao, Zhiping Ma, Guanghui Lin, Zhonghua Cai, Jin Zhou
Marine algae provide a unique niche termed the phycosphere for microorganism inhabitation. The phycosphere environment is an important niche for mutualistic and competitive interactions between algae and bacteria. Quorum sensing (QS) serves as a gene regulatory system in the microbial biosphere that allows bacteria to sense the population density with signaling molecules, such as acyl-homoserine lactone (AHL), and adapt their physiological activities to their surroundings. Understanding the QS system is important to elucidate the interactions between algal-associated microbial communities in the phycosphere condition...
January 2017: Current Microbiology
https://www.readbyqxmd.com/read/27682197/functional-diversity-and-microbial-activity-of-forest-soils-that-are-heavily-contaminated-by-lead-and-zinc
#12
Marek Pająk, Ewa Błońska, Magdalena Frąc, Karolina Oszust
The objective of this study was to assess the impact of metal contamination on microbial functional diversity and enzyme activity in forest soils. This study involved the evaluation of the influence of the texture, carbon content and distance to the source of contamination on the change in soil microbial activity, which did not investigate in previous studies. The study area is located in southern Poland near the city of Olkusz around the flotation sedimentation pond of lead and zinc at the Mining and Metallurgical Company "ZGH Bolesław, Inc...
2016: Water, Air, and Soil Pollution
https://www.readbyqxmd.com/read/27320666/effect-of-diet-supplementation-with-ascophyllum-nodosum-on-cow-milk-composition-and-microbiota
#13
RANDOMIZED CONTROLLED TRIAL
Clemencia Chaves Lopez, Annalisa Serio, Chiara Rossi, Giovanni Mazzarrino, Sonia Marchetti, Federica Castellani, Lisa Grotta, Francesco Paolo Fiorentino, Antonello Paparella, Giuseppe Martino
Iodine deficiency remains a major public health concern in many countries, including some European regions. This study aimed at understanding the effect of a supplement of marine alga Ascophyllum nodosum as a iodine fortifier in the cow diet, on the compositional and microbiological quality of milk. The results obtained in this work indicated that the dietary inclusion of A. nodosum exerted significant effects on cow milk composition. In particular, it increased iodine content and reduced the quantity of free amino acids without modifying the free fatty acid content...
August 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27306096/continous-application-of-bioorganic-fertilizer-induced-resilient-culturable-bacteria-community-associated-with-banana-fusarium-wilt-suppression
#14
Lin Fu, Yunze Ruan, Chengyuan Tao, Rong Li, Qirong Shen
Fusarium wilt of banana always drives farmers to find new land for banana cultivation due to the comeback of the disease after a few cropping years. A novel idea for solving this problem is the continuous application of bioorganic fertilizer (BIO), which should be practiced from the beginning of banana planting. In this study, BIO was applied in newly reclaimed fields to pre-control banana Fusarium wilt and the culturable rhizobacteria community were evaluated using Biolog Ecoplates and culture-dependent denaturing gradient gel electrophoresis (CD-DGGE)...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27213363/impact-of-faba-bean-seed-rhizobial-inoculation-on-microbial-activity-in-the-rhizosphere-soil-during-growing-season
#15
Anna Siczek, Jerzy Lipiec
Inoculation of legume seeds with Rhizobium affects soil microbial community and processes, especially in the rhizosphere. This study aimed at assessing the effect of Rhizobium inoculation on microbial activity in the faba bean rhizosphere during the growing season in a field experiment on a Haplic Luvisol derived from loess. Faba bean (Vicia faba L.) seeds were non-inoculated (NI) or inoculated (I) with Rhizobium leguminosarum bv. viciae and sown. The rhizosphere soil was analyzed for the enzymatic activities of dehydrogenases, urease, protease and acid phosphomonoesterase, and functional diversity (catabolic potential) using the Average Well Color Development, Shannon-Weaver, and Richness indices following the community level physiological profiling from Biolog EcoPlate™...
May 20, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27188411/utilization-of-carbon-substrates-by-heterotrophic-bacteria-through-vertical-sediment-profiles-in-coastal-and-estuarine-seagrass-meadows
#16
Christin Säwström, Oscar Serrano, Mohammad Rozaimi, Paul S Lavery
Coastal vegetated ecosystems play an important role in carbon cycling and bacterial communities inhabiting coastal sediments are responsible for the remineralization and processing of organic carbon (OC). We collected 1 m-long sediment cores in Posidonia seagrass meadows from coastal and estuarine sites in Australia that differed in their sedimentary organic and inorganic carbon, nitrogen and mud contents. The metabolic diversity of sediment heterotrophic bacterial communities was characterized at different sediment depths, based on the utilization pattern of 31 individual carbon substrates using Biolog EcoPlates(TM) ...
May 18, 2016: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/26910988/-distribution-of-redox-zone-at-different-water-layers-in-the-presence-of-periphyton-and-the-responsible-microorganisms
#17
Feng-wu Wang, Wei Liu, Juan-juan Wan, Jia-li Yang, Xue-mei Liu, Su-lin Xiang, Yong-hong Wu
So far, many types of carriers (such as artificial mat, industrial soft carriers) have been widely used in removing pollutants, purifying water quality via the periphyton attached on the surface of these carriers. In the presence of periphyton, the distribution of redox zone at different water layers is directly or indirectly associated with the removal rate of pollutants. Therefore, it is more practically significant to study the distribution of redox zone at different water layers and the microbial diversity in the presence of periphyton...
November 2015: Huan Jing Ke Xue= Huanjing Kexue
https://www.readbyqxmd.com/read/26629795/application-of-the-biolog-system-for-characterization-of-serratia-marcescens-ss-marcescens-isolated-from-onsite-wastewater-technology-oswt
#18
Joanna Chojniak, Łukasz Jałowiecki, Elmar Dorgeloh, Berta Hegedusova, Helene Ejhed, Jörgen Magnér, Grażyna Płaza
The scope of this study was to apply the Biolog system to identify and characterize a Serratia strain isolated from the surface of black plastic pieces which constitute the fluidized bed filter (onsite wastewater technology, OSWT). The preliminary isolation of the strain was done in the medium with tetracycline at a 16 mg/l concentration. To characterize the isolated strain, the following Biolog methods were applied: (1) EcoPlates microplates for evaluation of physiological profiling, (2) GEN III OmniLog® ID System for identification of the isolate, and (3) phenotypic microarrays (PM) technology for evaluation of sensitivity to antibiotics (PM11 and PM12)...
2015: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/26618605/coarse-woody-debris-increases-microbial-community-functional-diversity-but-not-enzyme-activities-in-reclaimed-oil-sands-soils
#19
Jin-Hyeob Kwak, Scott X Chang, M Anne Naeth, Wolfgang Schaaf
Forest floor mineral soil mix (FMM) and peat mineral soil mix (PMM) are cover soils commonly used for upland reclamation post open-pit oil sands mining in northern Alberta, Canada. Coarse woody debris (CWD) can be used to regulate soil temperature and water content, to increase organic matter content, and to create microsites for the establishment of microorganisms and vegetation in upland reclamation. We studied the effects of CWD on soil microbial community level physiological profile (CLPP) and soil enzyme activities in FMM and PMM in a reclaimed landscape in the oil sands...
2015: PloS One
https://www.readbyqxmd.com/read/26590928/effect-of-butyl-paraben-on-the-development-and-microbial-composition-of-periphyton
#20
Chaofeng Song, Juan Lin, Xiaolong Huang, Yonghong Wu, Jiantong Liu, Chenxi Wu
Parabens are extensively used as preservatives and bactericides in personal care and other consumer products, and are commonly found in wastewater and surface water as contaminants. However, few data are currently available on the ecotoxicity of parabens. Periphyton biofilm, a widely distributed microbial aggregate of ecological importance in aquatic environment, is frequently used for water quality monitoring, ecological restoration, and toxicity assessment. In this work, the effects of butyl paraben on the development and microbial composition of periphyton biofilm was studied in a laboratory experiment for 32 days using flow through channels...
March 2016: Ecotoxicology
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