Microbial Ecology

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Impact of Land Use Management and Soil Properties on Denitrifier Communities of Namibian Savannas
Microbial Ecology - Tập 70 - Trang 981-992 - 2015
Gesche Braker, Diethart Matthies, Michael Hannig, Franziska Barbara Brandt, Kristof Brenzinger, Alexander Gröngröft
We studied potential denitrification activity and the underlying denitrifier communities in soils from a semiarid savanna ecosystem of the Kavango region in NE Namibia to help in predicting future changes in N2O emissions due to continuing changes of land use in this region. Soil type and land use (pristine, fallow, and cultivated soils) influenced physicochemical characteristics of the soils that...... hiện toàn bộ
DGGE and T-RFLP Analysis of Bacterial Succession during Mushroom Compost Production and Sequence-aided T-RFLP Profile of Mature Compost
Microbial Ecology - Tập 57 - Trang 522-533 - 2008
Anna J. Székely, Rita Sipos, Brigitta Berta, Balázs Vajna, Csaba Hajdú, Károly Márialigeti
The amount of button mushroom (Agaricus bisporus) harvested from compost is largely affected by the microbial processes taking place during composting and the microbes inhabiting the mature compost. In this study, the microbial changes during the stages of this specific composting process were monitored, and the dominant bacteria of the mature compost were identified to reveal the microbiological ...... hiện toàn bộ
Enzymatic Activities and Prokaryotic Abundance in Relation to Organic Matter along a West–East Mediterranean Transect (TRANSMED Cruise)
Microbial Ecology - Tập 64 - Trang 54-66 - 2012
R. Zaccone, A. Boldrin, G. Caruso, R. La Ferla, G. Maimone, C. Santinelli, M. Turchetto
The distribution of extracellular enzymatic activities (EEA) [leucine aminopeptidase (LAP), ß-glucosidase (GLU), alkaline phosphatase (AP)], as well as that of prokaryotic abundance (PA) and biomass (PB), dissolved organic carbon (DOC), particulate organic carbon and particulate total nitrogen (POC, PTN), was determined in the epi-, meso-, and bathypelagic waters of the Mediterranean Sea along a W...... hiện toàn bộ
Endophytic Occupation of Root Nodules and Roots of Melilotus dentatus by Agrobacterium tumefaciens
Microbial Ecology - Tập 52 - Trang 436-443 - 2006
Ling Ling Wang, En Tao Wang, Jie Liu, Ying Li, Wen Xin Chen
Agrobacterium strains have been frequently isolated from the root nodules of different legumes. Various possible mechanisms have been proposed to explain the existence of these bacteria in nodules, but there is no sufficient experimental evidence to support the estimations. In this work, we proved that the Agrobacterium strain CCBAU 81181, which was originally isolated from the root nodules of Ono...... hiện toàn bộ
Soil Bacterial Consortia and Previous Exposure Enhance the Biodegradation of Sulfonamides from Pig Manure
Microbial Ecology - Tập 64 - Trang 140-151 - 2012
Marina Islas-Espinoza, Brian J. Reid, Margaret Wexler, Philip L. Bond
Persistence or degradation of synthetic antibiotics in soil is crucial in assessing their environmental risks. Microbial catabolic activity in a sandy loamy soil with pig manure using 12C- and 14C-labelled sulfamethazine (SMZ) respirometry showed that SMZ was not readily degradable. But after 100 days, degradation in sulfadiazine-exposed manure was 9.2%, far greater than soil and organic manure (0...... hiện toàn bộ
Transformation of indole by methanogenic and sulfate-reducing microorganisms isolated from digested sludge
Microbial Ecology - Tập 20 - Trang 171-183 - 1990
Rishi Shanker, Jean-Marc Bollag
In the present study, mineralization of an aromaticN-heterocyclic molecule, indole, by microorganisms present in anaerobically digested sewage sludge was examined. The first step in indole mineralization was the formation of a hydroxylated intermediate, oxindole. The rate of transformation of indole to oxindole and its subsequent disappearance was dependent on the concentration of inoculum and ind...... hiện toàn bộ
Analysis of spatial and temporal variation in the community structure of yeasts associated with decayingOpuntia cactus
Microbial Ecology - Tập 14 - Trang 267-276 - 1987
J. S. F. Barker, W. T. Starmer, D. C. Vacek
The microbial structure within, between, and over time in decaying cladodes of the common prickly pearOpuntia stricta was studied at each of two separate localities. In general, the effective number of yeast species and yeast species diversity increased as the rot aged to the observed maximum time of 4 weeks. Yeast heterogeneity at the two localities differed in the mode of environmental influence...... hiện toàn bộ
Microbial Biomass and Community Structure in a Sequence of Soils with Increasing Fertility and Changing Land Use
Microbial Ecology - Tập 40 - Trang 223-237 - 2000
H. Yao, Z. He, M. J. Wilson, C. D. Campbell
The microbial biomass and community structure of eight Chinese red soils with different fertility and land use history was investigated. Two community based microbiological measurements, namely, community level physiological profiling (CLPP) using Biolog sole C source utilization tests and phospholipid fatty acid (PLFA) profiles, were used to investigate the microbial ecology of these soils and t...... hiện toàn bộ
Initial Phylogenetic Relatedness of Saprotrophic Fungal Communities Affects Subsequent Litter Decomposition Rates
Microbial Ecology - Tập 69 - Trang 748-757 - 2014
Stephanie N. Kivlin, Kathleen K. Treseder
Ecosystem-level consequences of biodiversity loss of macroorganisms are well understood, while the repercussions of species extirpation in microbial systems are not. We manipulated species richness and phylogenetic relatedness of saprotrophic fungi in situ in a boreal forest to address this issue. Litter decomposition rates (as total mass loss) after 2 months were significantly higher in the least...... hiện toàn bộ
Southern African Biological Soil Crusts are Ubiquitous and Highly Diverse in Drylands, Being Restricted by Rainfall Frequency
Microbial Ecology - Tập 57 - Trang 229-247 - 2008
Burkhard Büdel, Tatyana Darienko, Kirstin Deutschewitz, Stephanie Dojani, Thomas Friedl, Kathrin I. Mohr, Mario Salisch, Werner Reisser, Bettina Weber
Biological soil crusts (BSCs) are found in all dryland regions of the world, including the polar regions. They are also known to occur in the southern African region. Although there were a number of case studies on BSCs from that region, we did not know if they are a normal part of the vegetation cover or just a phenomenon that occasionally occurs here and there. In order to investigate diversity,...... hiện toàn bộ
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