3,962 results match your criteria Microbial ecology[Journal]


Functional Fungal Endophytes in Coleus forskohlii Regulate Labdane Diterpene Biosynthesis for Elevated Forskolin Accumulation in Roots.

Microb Ecol 2019 Apr 17. Epub 2019 Apr 17.

Microbial Technology Laboratory, CSIR- Central Institute of Medicinal and Aromatic Plants, Research Center, Bangalore, 560065, India.

Coleus forskohlii is a perennial medicinal shrub cultivated mainly for its forskolin content. The plant has been used since ancient times in ayurvedic traditional medicines for the treatment of hypertension, glaucoma, asthma, congestive heart failures, obesity, and cancer. Use of endophytic microorganisms presents a special interest for the development of value-added bioactive compounds through agriculture. Read More

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http://dx.doi.org/10.1007/s00248-019-01376-wDOI Listing

Fungal Community Composition and Potential Depth-Related Driving Factors Impacting Distribution Pattern and Trophic Modes from Epi- to Abyssopelagic Zones of the Western Pacific Ocean.

Microb Ecol 2019 Apr 16. Epub 2019 Apr 16.

State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.

Fungi play an important role in cycling organic matter and nutrients in marine ecosystems. However, the distribution of fungal communities in the ocean, especially the vertical distribution along depth in the water column, remained poorly understood. Here, we assess the depth-related distribution pattern of fungal communities along the water column from epi- to abyssopelagic zones of the Western Pacific Ocean using internal transcribed spacer 2 (ITS2) metabarcoding. Read More

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http://link.springer.com/10.1007/s00248-019-01374-y
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http://dx.doi.org/10.1007/s00248-019-01374-yDOI Listing
April 2019
4 Reads

Characterization of Bacterial Communities in Breeding Waters of Anopheles darlingi in Manaus in the Amazon Basin Malaria-Endemic Area.

Microb Ecol 2019 Apr 15. Epub 2019 Apr 15.

Department of Cell and Molecular Biology, Microbiology, Uppsala University, P.O. Box 596, 751 24, Uppsala, Sweden.

The microbiota in mosquito breeding waters can affect ovipositing mosquitoes, have effects on larval development, and can modify adult mosquito-gut bacterial composition. This, in turn, can affect transmission of human pathogens such as malaria parasites. Here, we explore the microbiota of four breeding sites for Anopheles darlingi, the most important malaria vector in Latin America. Read More

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http://dx.doi.org/10.1007/s00248-019-01369-9DOI Listing
April 2019
1 Read

Bacterial Community Composition and Diversity Respond to Nutrient Amendment but Not Warming in a Maritime Antarctic Soil.

Microb Ecol 2019 Apr 15. Epub 2019 Apr 15.

Scotland's Rural College, Peter Wilson Building, West Mains Road, Edinburgh, EH9 3JG, UK.

A resumption of climate warming in maritime Antarctica, arising from continued greenhouse gas emissions to the atmosphere, is predicted to lead to further expansions of plant populations across the region, with consequent increases in nutrient inputs to soils. Here, we test the main and interactive effects of warming, applied with open top chambers (OTCs), and nutrient amendment with tryptic soy broth (TSB), an artificial growth substrate, on bacterial community composition and diversity using Illumina sequencing of 16S rRNA genes in soil from a field experiment in the southern maritime Antarctic. Substantial effects of TSB application on bacterial communities were identified after 49 months, including reduced diversity, altered phylogenetic community assembly processes, increased Proteobacteria-to-Acidobacteria ratios and significant divergence in community composition, notably increases in the relative abundances of the gram-positive genera Arthrobacter, Paeniglutamicibacter and Planococcus. Read More

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http://link.springer.com/10.1007/s00248-019-01373-z
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http://dx.doi.org/10.1007/s00248-019-01373-zDOI Listing
April 2019
1 Read

Community Ecology of Deinococcus in Irradiated Soil.

Microb Ecol 2019 Apr 12. Epub 2019 Apr 12.

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, Qixia District, Jiangsu Province, People's Republic of China.

Deinococcus is a genus of soil bacteria known for radiation resistance. However, the effects of radiation exposure on its community structure are unknown. We exposed soil to three levels of gamma radiation, 0. Read More

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http://link.springer.com/10.1007/s00248-019-01343-5
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http://dx.doi.org/10.1007/s00248-019-01343-5DOI Listing
April 2019
1 Read
2.973 Impact Factor

Functional Response of MBR Microbial Consortia to Substrate Stress as Revealed by Metaproteomics.

Microb Ecol 2019 Apr 12. Epub 2019 Apr 12.

IRSA CNR, Water Research Institute, Viale F. De Blasio 5, 70132, Bari, Italy.

Bacterial consortia have a primary role in the biological degradations occurring in activated sludge for wastewater treatment, for their capacities to metabolize the polluting matter. Therefore, the knowledge of the main metabolic pathways for the degradation of pollutants becomes critical for a correct design and operation of wastewater treatment plants. The metabolic activity of the different bacterial groups in activated sludge is commonly investigated through respirometry. Read More

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http://dx.doi.org/10.1007/s00248-019-01360-4DOI Listing
April 2019
4 Reads

Edaphic Factors Influence the Distribution of Arbuscular Mycorrhizal Fungi Along an Altitudinal Gradient of a Tropical Mountain.

Microb Ecol 2019 Apr 11. Epub 2019 Apr 11.

Departamento de Micologia, Laboratório de Micorrizas, Universidade Federal de Pernambuco, Av. Prof. Nelson Chaves s/n. Cidade Universitária, CEP 50670-420, Recife, Pernambuco, Brazil.

Changes in relief in montane areas, with increasing altitude, provide different biotic and abiotic conditions, acting on the species of arbuscular mycorrhizal fungi (AMF). The objective of this work was to determine the influence of altitude, edaphic factors, and vegetation on the AMF species in a mountainous area. The list of AMF species was obtained from morphological identification of the spores, with 72 species recovered from field samples and trap cultures. Read More

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http://link.springer.com/10.1007/s00248-019-01354-2
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http://dx.doi.org/10.1007/s00248-019-01354-2DOI Listing
April 2019
1 Read

A Physiological and Genomic Comparison of Nitrosomonas Cluster 6a and 7 Ammonia-Oxidizing Bacteria.

Microb Ecol 2019 Apr 11. Epub 2019 Apr 11.

Department of Microbiology, Miami University, 501 East High St, Oxford, OH, 45056, USA.

Ammonia-oxidizing bacteria (AOB) within the genus Nitrosomonas perform the first step in nitrification, ammonia oxidation, and are found in diverse aquatic and terrestrial environments. Nitrosomonas AOB were grouped into six defined clusters, which correlate with physiological characteristics that contribute to adaptations to a variety of abiotic environmental factors. A fundamental physiological trait differentiating Nitrosomonas AOB is the adaptation to either low (cluster 6a) or high (cluster 7) ammonium concentrations. Read More

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http://dx.doi.org/10.1007/s00248-019-01378-8DOI Listing

Impacts of Freshwater and Seawater Mixing on the Production and Decay of Virioplankton in a Subtropical Estuary.

Microb Ecol 2019 Apr 10. Epub 2019 Apr 10.

State Key Laboratory of Marine Environmental Science, Institute of Marine Microbes and Ecospheres, Xiamen University, Xiamen, 361102, People's Republic of China.

Virioplankton is an important component of the aquatic ecosystem and plays multiple ecological and biogeochemical roles. Although the spatial and temporal distributions and dynamics of virioplankton have been well investigated in riverine and marine environments, little is known about the dynamics and environmental controlling mechanisms of virioplankton in estuaries. In this study, viral abundance, production and decay were examined in the Pearl River Estuary (PRE), one of the largest estuaries in China. Read More

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http://dx.doi.org/10.1007/s00248-019-01362-2DOI Listing
April 2019
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A Polyphasic Approach for Assessing Eco-System Connectivity Demonstrates that Perturbation Remodels Network Architecture in Soil Microcosms.

Microb Ecol 2019 Apr 5. Epub 2019 Apr 5.

International Hellenic University, 14th km Thessaloniki-N. Moudania, 57001 Thermi, Thessaloniki, Greece.

Network analysis was used to show changes in network attributes by analyzing the relations among the main soil microbial groups in a potted tomato soil inoculated with arbuscular mycorrhizal fungus, treated with low doses of Mentha spicata essential oil, or both, and then exposed to tenfold higher oil addition (stress pulse). Pretreatments were chosen since they can induce changes in the composition of the microbial community. Cellular phospholipid fatty acids (PLFAs) and the activity of six soil enzymes, mainly involved in the N-cycle were measured. Read More

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http://dx.doi.org/10.1007/s00248-019-01367-xDOI Listing
April 2019
1 Read

Time-Dependent Hormetic Response of Soil Alkaline Phosphatase Induced by Cd and the Association with Bacterial Community Composition.

Microb Ecol 2019 Apr 5. Epub 2019 Apr 5.

College of Biology and the Environment, Nanjing Forestry University, No.159 Longpan Road, Nanjing, Jiangsu, 210037, People's Republic of China.

Hormetic dose-response that involved Cd in soils is increasingly paid attentions for risk assessment of Cd toxicity, but insufficient studies were conducted to define the temporary modification of soil enzyme and the potential microbial responses. The present study chooses soil alkaline phosphatase (ALP) as endpoint to uncover the time-dependent hormetic responses to low doses of Cd and its association with bacterial community composition. The results showed that addition of 0. Read More

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http://dx.doi.org/10.1007/s00248-019-01371-1DOI Listing
April 2019
2 Reads

Ecological Correlates of Large-Scale Turnover in the Dominant Members of Pseudacris crucifer Skin Bacterial Communities.

Microb Ecol 2019 Apr 4. Epub 2019 Apr 4.

Department of Biological Sciences, Virginia Tech, 4088 Derring Hall, 926 West Campus Drive, Blacksburg, VA, USA.

Animals host a wide diversity of symbiotic microorganisms that contribute important functions to host health, and our knowledge of what drives variation in the composition of these complex communities continues to grow. Microbiome studies at larger spatial scales present opportunities to evaluate the contribution of large-scale factors to variation in the microbiome. We conducted a large-scale field study to assess variation in the bacterial symbiont communities on adult frog skin (Pseudacris crucifer), characterized using 16S rRNA gene amplicon sequencing. Read More

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http://dx.doi.org/10.1007/s00248-019-01372-0DOI Listing
April 2019
2 Reads

Small-Scale Spatial Heterogeneity of Photosynthetic Fluorescence Associated with Biological Soil Crust Succession in the Tengger Desert, China.

Microb Ecol 2019 Apr 4. Epub 2019 Apr 4.

Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.

In dryland regions, biological soil crusts (BSCs) have numerous important ecosystem functions. Crust species and functions are, however, highly spatially heterogeneous and remain poorly understood at a range of scales. In this study, chlorophyll fluorescence imaging was used to quantify millimeter-scale patterns in the distribution and activity of photosynthetic organisms in BSCs of different successional stages (including cyanobacterial, lichen, moss three main successional stages and three intermixed transitional stages) from the Tengger Desert, China. Read More

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http://dx.doi.org/10.1007/s00248-019-01356-0DOI Listing
April 2019
4 Reads
2.973 Impact Factor

Tracking Replicate Divergence in Microbial Community Composition and Function in Experimental Microcosms.

Microb Ecol 2019 Apr 2. Epub 2019 Apr 2.

Biosciences Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA.

The study of microbial community functions necessitates replicating microbial communities. Variation in community development over time renders this an imperfect process. Thus, anticipating the likely degree of variation among replicate communities may aid in experimental design. Read More

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http://dx.doi.org/10.1007/s00248-019-01368-wDOI Listing
April 2019
1 Read

A Customized At-Home Stool Collection Protocol for Use in Microbiome Studies Conducted in Cancer Patient Populations.

Microb Ecol 2019 Mar 30. Epub 2019 Mar 30.

Department of Cancer Epidemiology, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.

Fecal specimen collection in the clinical setting is often unfeasible for large population studies, especially because cancer patients on immunotherapy often experience constipation. A method for constructing and using an at-home stool collection kit designed for epidemiological studies in cancer patients is presented. Participation and compliance rates of the collection kit among late-stage cancer patients from an ongoing, longitudinal study are also discussed. Read More

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http://dx.doi.org/10.1007/s00248-019-01346-2DOI Listing
March 2019
2 Reads

Correction to: Enhanced Growth of Pilin-Deficient Geobacter sulfurreducens Mutants in Carbon Poor and Electron Donor Limiting Conditions.

Microb Ecol 2019 Mar 30. Epub 2019 Mar 30.

Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria, Australia.

The published version of this article contained an old version of Fig. 2. Read More

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http://dx.doi.org/10.1007/s00248-019-01370-2DOI Listing
March 2019
1 Read

Lower Respiratory Tract Microbiome and Resistome of Bovine Respiratory Disease Mortalities.

Microb Ecol 2019 Mar 27. Epub 2019 Mar 27.

Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada.

Bovine respiratory disease (BRD) continues to be a serious health problem in beef cattle production. A multifactorial condition, BRD encompasses several types of pneumonia that are associated with multiple viral and bacterial agents. Comprehensive identification of microbes associated with BRD fatalities could enhance our understanding of the range of pathogens that contribute to the disease and identify new therapeutic targets. Read More

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http://dx.doi.org/10.1007/s00248-019-01361-3DOI Listing
March 2019
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How Hosts Taxonomy, Trophy, and Endosymbionts Shape Microbiome Diversity in Beetles.

Microb Ecol 2019 Mar 27. Epub 2019 Mar 27.

Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Krakow, Poland.

Bacterial communities play a crucial role in the biology, ecology, and evolution of multicellular organisms. In this research, the microbiome of 24 selected beetle species representing five families (Carabidae, Staphylinidae, Curculionidae, Chrysomelidae, Scarabaeidae) and three trophic guilds (carnivorous, herbivorous, detrivorous) was examined using 16S rDNA sequencing on the Illumina platform. The aim of the study was to compare diversity within and among species on various levels of organization, including evaluation of the impact of endosymbiotic bacteria. Read More

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http://dx.doi.org/10.1007/s00248-019-01358-yDOI Listing

Correction to: Bacterial Community of the Digestive Tract of the European Medicinal Leech (Hirudo verbana) from the Danube River.

Microb Ecol 2019 Mar 26. Epub 2019 Mar 26.

Department of Entomology, Kansas State University, Manhattan, KS, USA.

The original published version of this article had mistakes in figure legends. Correct figure legends are presented below. Read More

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http://dx.doi.org/10.1007/s00248-019-01363-1DOI Listing

Continuing Impacts of Selective Inhibition on Bacterial and Fungal Communities in an Agricultural Soil.

Microb Ecol 2019 Mar 25. Epub 2019 Mar 25.

Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.

Selective inhibition (SI) has been routinely used to differentiate the contributions of bacteria and fungi to soil ecological processes. SI experiments typically measured rapid responses within hours since the addition of inhibitor, but the long-term effects of selective biocides on microbial community composition and function were largely unknown. In this study, a microcosm experiment was performed with an agricultural soil to explore the effectiveness of two bactericides (bronopol, streptomycin) and two fungicides (cycloheximide, captan), which were applied at two different concentrations (2 and 10 mg g). Read More

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http://dx.doi.org/10.1007/s00248-019-01364-0DOI Listing

Bacillus-Dominant Airborne Bacterial Communities Identified During Asian Dust Events.

Microb Ecol 2019 Mar 23. Epub 2019 Mar 23.

Department of Civil and Environmental Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, South Korea.

Asian dust (AD) events have received significant attention due to their adverse effects on ecosystems and human health. However, detailed information about airborne pathogens associated with AD events is limited. This study monitored airborne bacterial communities and identified AD-specific bacteria and the potential hazards associated with these bacteria during AD events. Read More

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http://link.springer.com/10.1007/s00248-019-01348-0
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http://dx.doi.org/10.1007/s00248-019-01348-0DOI Listing
March 2019
8 Reads

Ecological Success of the Nitrosopumilus and Nitrosospira Clusters in the Intertidal Zone.

Microb Ecol 2019 Mar 22. Epub 2019 Mar 22.

Department of Environmental Engineering, Zhejiang University, Hangzhou, China.

The intertidal zone is an important buffer and a nitrogen sink between land and sea. Ammonia oxidation is the rate-limiting step of nitrification, conducted by ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB). However, it remains a debatable issue regarding dominant ammonia oxidizers in this region, and environmental factors driving their spatiotemporal niche differentiation have yet to be identified. Read More

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http://dx.doi.org/10.1007/s00248-019-01359-xDOI Listing
March 2019
2.973 Impact Factor

Different Degrees of Niche Differentiation for Bacteria, Fungi, and Myxomycetes Within an Elevational Transect in the German Alps.

Microb Ecol 2019 Mar 22. Epub 2019 Mar 22.

Institute of Botany and Landscape Ecology, University of Greifswald, Soldmannstrasse 15, 17487, Greifswald, Mecklenburg-Vorpommern, Germany.

We used direct DNA amplification from soil extracts to analyze microbial communities from an elevational transect in the German Alps by parallel metabarcoding of bacteria (16S rRNA), fungi (ITS2), and myxomycetes (18S rRNA). For the three microbial groups, 5710, 6133, and 261 operational taxonomic units (OTU) were found. For the latter group, we can relate OTUs to barcodes from fruit bodies sampled over a 4-year period. Read More

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http://dx.doi.org/10.1007/s00248-019-01347-1DOI Listing

Litter Quality Modulates Effects of Dissolved Nitrogen on Leaf Decomposition by Stream Microbial Communities.

Microb Ecol 2019 Mar 21. Epub 2019 Mar 21.

EcoLab, Université de Toulouse, CNRS, INP, UPS, 118 route de Narbonne, Bât 4R1, Toulouse cedex 9, 31062, France.

Rates of leaf litter decomposition in streams are strongly influenced both by inorganic nutrients dissolved in stream water and by litter traits such as lignin, nitrogen (N) and phosphorus (P) concentrations. As a result, decomposition rates of different leaf species can show contrasting responses to stream nutrient enrichment resulting from human activities. It is unclear, however, whether the root cause of such discrepancies in field observations is the interspecific variation in either litter nutrient or litter lignin concentrations. Read More

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http://dx.doi.org/10.1007/s00248-019-01353-3DOI Listing

Cultivation Intensity in Combination with Other Ecological Factors as Limiting Ones for the Abundance of Phytopathogenic Fungi on Wheat.

Microb Ecol 2019 Mar 21. Epub 2019 Mar 21.

Crop Research Institute (CRI), Ruzyně, Prague 6, Czech Republic.

In field and laboratory experiments during 2014-2017, we investigated the influence of lower and higher cultivation intensity of wheat and ecological factors (weather-temperature and rainfalls, year) on the occurrence of phytopathogenic fungi on the leaves of winter wheat. The prevailing fungi in those years were Mycosphaerella graminicola (Fuckel) J. Schrott and Pyrenophora tritici-repentis (Died. Read More

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http://dx.doi.org/10.1007/s00248-019-01337-3DOI Listing

Microbial Ecology of the Western Gull (Larus occidentalis).

Microb Ecol 2019 Mar 20. Epub 2019 Mar 20.

Department of Biological Sciences, San José State University, One Washington Square, San Jose, CA, 95192-0100, USA.

Avian species host diverse communities of microorganisms which have important roles in the life of birds, including increased metabolism, protection from disease, and immune system development. Along with high human populations and a diversity of human uses of coastal zones, anthropogenic food sources are becoming increasingly available to some species, including gulls. Anthropogenic associations increase the likelihood of encountering foreign or pathogenic bacteria. Read More

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http://link.springer.com/10.1007/s00248-019-01352-4
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http://dx.doi.org/10.1007/s00248-019-01352-4DOI Listing
March 2019
4 Reads

Microbial Ecology of Snow Reveals Taxa-Specific Biogeographical Structure.

Microb Ecol 2019 Mar 13. Epub 2019 Mar 13.

Division of Biology, Kansas State University, Manhattan, KS, 66506, USA.

Snows that persist late into the growing season become colonized with numerous metabolically active microorganisms, yet underlying mechanisms of community assembly and dispersal remain poorly known. We investigated (Illumina MiSeq) snow-borne bacterial, fungal, and algal communities across a latitudinal gradient in Fennoscandia and inter-continental distribution between northern Europe and North America. Our data indicate that bacterial communities are ubiquitous regionally (across Fennoscandia), whereas fungal communities are regionally heterogeneous. Read More

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http://dx.doi.org/10.1007/s00248-019-01357-zDOI Listing
March 2019
4 Reads

Comparative Analyses of the Microbial Communities Inhabiting Coal Mining Waste Dump and an Adjacent Acid Mine Drainage Creek.

Microb Ecol 2019 Mar 11. Epub 2019 Mar 11.

Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, 08901, USA.

Microbial communities inhabiting the acid mine drainage (AMD) have been extensively studied, but the microbial communities in the coal mining waste dump that may generate the AMD are still relatively under-explored. In this study, we characterized the microbial communities within these under-explored extreme habitats and compared with those in the downstream AMD creek. In addition, the interplay between the microbiota and the environmental parameters was statistically investigated. Read More

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http://link.springer.com/10.1007/s00248-019-01335-5
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http://dx.doi.org/10.1007/s00248-019-01335-5DOI Listing
March 2019
1 Read

Radiative Energy Budgets in a Microbial Mat Under Different Irradiance and Tidal Conditions.

Microb Ecol 2019 Mar 9. Epub 2019 Mar 9.

Marine Biological Section, Department of Biology, University of Copenhagen, Helsingør, Denmark.

Irradiance and temperature variations during tidal cycles modulate microphytobenthic primary production potentially by changing the radiative energy balance of photosynthetic mats between immersion and emersion and thus sediment daily net metabolism. To test the effect of tidal stages on the radiative energy budget, we used microsensor measurements of oxygen, temperature, and scalar irradiance to estimate the radiative energy budget in a coastal photosynthetic microbial mat during immersion (constant water column of 2 cm) and emersion under increasing irradiance. Total absorbed light energy was higher in immersion than emersion, due to a lower reflectance of the microbial mat, while most (> 97%) of the absorbed light energy was dissipated as heat irrespective of tidal conditions. Read More

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http://dx.doi.org/10.1007/s00248-019-01350-6DOI Listing
March 2019
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Impacts of Sampling Design on Estimates of Microbial Community Diversity and Composition in Agricultural Soils.

Microb Ecol 2019 Mar 9. Epub 2019 Mar 9.

Department of Plant Pathology, University of Minnesota, Minneapolis, USA.

Soil microbiota play important and diverse roles in agricultural crop nutrition and productivity. Yet, despite increasing efforts to characterize soil bacterial and fungal assemblages, it is challenging to disentangle the influences of sampling design on assessments of communities. Here, we sought to determine whether composite samples-often analyzed as a low cost and effort alternative to replicated individual samples-provide representative summary estimates of microbial communities. Read More

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http://dx.doi.org/10.1007/s00248-019-01318-6DOI Listing

Crop Residues in Wheat-Oilseed Rape Rotation System: a Pivotal, Shifting Platform for Microbial Meetings.

Microb Ecol 2019 Mar 5. Epub 2019 Mar 5.

UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France.

Crop residues are a crucial ecological niche with a major biological impact on agricultural ecosystems. In this study, we used a combined diachronic and synchronic field experiment based on wheat-oilseed rape rotations to test the hypothesis that plant is a structuring factor of microbial communities in crop residues, and that this effect decreases over time with their likely progressive degradation and colonisation by other microorganisms. We characterised an entire fungal and bacterial community associated with 150 wheat and oilseed rape residue samples at a plurennial scale by metabarcoding. Read More

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http://dx.doi.org/10.1007/s00248-019-01340-8DOI Listing
March 2019
1 Read

Microbiomes of China's Space Station During Assembly, Integration, and Test Operations.

Microb Ecol 2019 Feb 26. Epub 2019 Feb 26.

School of Life Science, Beijing Institute of Technology, Beijing, 100081, China.

Sufficient evidence indicates that orbiting space stations contain diverse microbial populations, which may threaten astronaut health and equipment reliability. Understanding the composition of microbial communities in space stations will facilitate further development of targeted biological safety prevention and maintenance practices. Therefore, this study systematically investigated the microbial community of China's Space Station (CSS). Read More

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http://dx.doi.org/10.1007/s00248-019-01344-4DOI Listing
February 2019

Bacterial Community of the Digestive Tract of the European Medicinal Leech (Hirudo verbana) from the Danube River.

Microb Ecol 2019 Feb 26. Epub 2019 Feb 26.

Department of Entomology, Kansas State University, Manhattan, KS, USA.

The digestive tract of medicinal leeches from commercial suppliers has been investigated previously and comprises of a relatively simple bacterial community. However, the microbiome of medicinal leeches collected directly from the natural habitat has not been examined. In this study, we characterized the bacterial community in the digestive tract (anterior crop, posterior crop, and intestine) of the European medicinal leech, Hirudo verbana, collected from the Danube river using culture-independent and culture-dependent approaches. Read More

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http://dx.doi.org/10.1007/s00248-019-01349-zDOI Listing
February 2019
2 Reads

Biosolids and Tillage Practices Influence Soil Bacterial Communities in Dryland Wheat.

Microb Ecol 2019 Feb 22. Epub 2019 Feb 22.

Wheat Health, Genetics and Quality Research Unit, USDA-ARS, Pullman, WA, 99164, USA.

Class B biosolids are used in dryland wheat (Triticum aestivum L.) production in eastern Washington as a source of nutrients and to increase soil organic matter, but little is known about their effects on bacterial communities and potential for harboring human pathogens. Moreover, conservation tillage is promoted to reduce erosion and soil degradation. Read More

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http://link.springer.com/10.1007/s00248-019-01339-1
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http://dx.doi.org/10.1007/s00248-019-01339-1DOI Listing
February 2019
5 Reads

Microbial Diversity and Chemical Multiplicity of Culturable, Taxonomically Similar Bacterial Symbionts of the Leaf-Cutting Ant Acromyrmex coronatus.

Microb Ecol 2019 Feb 21. Epub 2019 Feb 21.

Laboratório de Interações em Insetos, Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Av Pádua Dias 11, Piracicaba, SP, 13418-900, Brazil.

Insects are a highly diverse group, exploit a wide range of habitats, and harbor bacterial symbionts of largely unknown diversity. Insect-associated bacterial symbionts are underexplored but promising sources of bioactive compounds. The community of culturable bacteria associated with the leaf-cutting ant Acromyrmex coronatus (Fabricius) and the diversity of their metabolites produced were investigated. Read More

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http://dx.doi.org/10.1007/s00248-019-01341-7DOI Listing
February 2019
1 Read

Comparative Genomics, Siderophore Production, and Iron Scavenging Potential of Root Zone Soil Bacteria Isolated from 'Concord' Grape Vineyards.

Microb Ecol 2019 Feb 15. Epub 2019 Feb 15.

Department of Crop and Soil Sciences, Washington State University, PO Box 646420, Pullman, WA, USA.

Iron (Fe) deficiency in crop production is a worldwide problem which often results in chlorosis in grapevines, particularly in calcareous soils. Siderophores secreted by microorganisms and Strategy II plants can chelate Fe and other metals in soil solution, and siderophore-Fe complexes can then be utilized by plants and microbes. Plants may also shift rhizosphere conditions to favor siderophore-producing microbes, which can increase plant available Fe. Read More

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http://dx.doi.org/10.1007/s00248-019-01324-8DOI Listing
February 2019
2 Reads

Geographic and Temporal Variation of Distinct Intracellular Endosymbiont Strains of Wolbachia sp. in the Grasshopper Chorthippus parallelus: a Frequency-Dependent Mechanism?

Microb Ecol 2019 Feb 14. Epub 2019 Feb 14.

Departamento de Biología (Genética), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049, Madrid, Spain.

Wolbachia is an intracellular endosymbiont that can produce a range of effects on host fitness, but the temporal dynamics of Wolbachia strains have rarely been experimentally evaluated. We compare interannual strain frequencies along a geographical region for understanding the forces that shape Wolbachia strain frequency in natural populations of its host, Chorthippus parallelus (Orthoptera, Acrididae). General linear models show that strain frequency changes significantly across geographical and temporal scales. Read More

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http://link.springer.com/10.1007/s00248-019-01338-2
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http://dx.doi.org/10.1007/s00248-019-01338-2DOI Listing
February 2019
8 Reads

Ecological Strategies Behind the Selection of Cultivable Actinomycete Strains from the Yucatan Peninsula for the Discovery of Secondary Metabolites with Antibiotic Activity.

Microb Ecol 2019 Feb 14. Epub 2019 Feb 14.

Laboratorio de Ecología Microbiana y Productos Naturales Marinos, Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Sisal, Yucatán, Mexico.

The quest for novel natural products has recently focused on the marine environment as a source for novel microorganisms. Although isolation of marine-derived actinomycete strains is now common, understanding their distribution in the oceans and their adaptation to this environment can be helpful in the selection of isolates for further novel secondary metabolite discovery. This study explores the taxonomic diversity of marine-derived actinomycetes from distinct environments in the coastal areas of the Yucatan Peninsula and their adaptation to the marine environment as a first step towards novel natural product discovery. Read More

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http://dx.doi.org/10.1007/s00248-019-01329-3DOI Listing
February 2019
2 Reads

Home-Field Advantage in Wood Decomposition Is Mainly Mediated by Fungal Community Shifts at "Home" Versus "Away".

Microb Ecol 2019 Feb 13. Epub 2019 Feb 13.

UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle (Saale), Germany.

The home-field advantage (HFA) hypothesis has been used intensively to study leaf litter decomposition in various ecosystems. However, the HFA in woody substrates is still unexplored. Here, we reanalyzed and integrated existing datasets on various groups of microorganisms collected from natural deadwood of two temperate trees, Fagus sylvatica and Picea abies, from forests in which one or other of these species dominates but where both are present. Read More

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http://dx.doi.org/10.1007/s00248-019-01334-6DOI Listing
February 2019

Enhanced Growth of Pilin-Deficient Geobacter sulfurreducens Mutants in Carbon Poor and Electron Donor Limiting Conditions.

Microb Ecol 2019 Feb 13. Epub 2019 Feb 13.

Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria, Australia.

Geobacter sulfurreducens pili enable extracellular electron transfer and play a role in secretion of c-type cytochromes such as OmcZ. PilA-deficient mutants of G. sulfurreducens have previously been shown to accumulate cytochromes within their membranes. Read More

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http://link.springer.com/10.1007/s00248-019-01316-8
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http://dx.doi.org/10.1007/s00248-019-01316-8DOI Listing
February 2019
5 Reads

Contrasted Micro-Eukaryotic Diversity Associated with Sphagnum Mosses in Tropical, Subtropical and Temperate Climatic Zones.

Microb Ecol 2019 Feb 12. Epub 2019 Feb 12.

Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014, Madrid, Spain.

Sphagnum-dominated ecosystem plays major roles as carbon sinks at the global level. Associated microbial communities, in particular, eukaryotes, play significant roles in nutrient fixation and turnover. In order to understand better the ecological processes driven by these organisms, the first step is to characterise these associated organisms. Read More

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http://dx.doi.org/10.1007/s00248-019-01325-7DOI Listing
February 2019
2 Reads

Microbial Organic Matter Utilization in High-Arctic Streams: Key Enzymatic Controls.

Microb Ecol 2019 Feb 10. Epub 2019 Feb 10.

Department of Bioscience, Aarhus University, Ole Worms Allé 1, Aarhus, Denmark.

In the Arctic, climate changes contribute to enhanced mobilization of organic matter in streams. Microbial extracellular enzymes are important mediators of stream organic matter processing, but limited information is available on enzyme processes in this remote area. Here, we studied the variability of microbial extracellular enzyme activity in high-Arctic fluvial biofilms. Read More

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http://dx.doi.org/10.1007/s00248-019-01330-wDOI Listing
February 2019
2 Reads

Very Low Phytoplankton Diversity in a Tropical Saline-Alkaline Lake, with Co-dominance of Arthrospira fusiformis (Cyanobacteria) and Picocystis salinarum (Chlorophyta).

Microb Ecol 2019 Feb 7. Epub 2019 Feb 7.

UMR 9190 MARBEC, CNRS - Université de Montpellier - IRD - IFREMER, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France.

Lake Dziani Dzaha (Mayotte Island, Indian Ocean) is a tropical thalassohaline lake which geochemical and biological conditions make it a unique aquatic ecosystem considered as a modern analogue of Precambrian environments. In the present study, we focused on the diversity of phytoplanktonic communities, which produce very high and stable biomass (mean = 652 ± 179 μg chlorophyll a L). As predicted by classical community ecology paradigms, and as observed in similar environments, a single species is expected to dominate the phytoplanktonic communities. Read More

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http://dx.doi.org/10.1007/s00248-019-01332-8DOI Listing
February 2019

Impacts of Arsenic and Antimony Co-Contamination on Sedimentary Microbial Communities in Rivers with Different Pollution Gradients.

Microb Ecol 2019 Feb 6. Epub 2019 Feb 6.

Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China.

Arsenic (As) and antimony (Sb) are both toxic metalloids that are of primary concern for human health. Mining activity has introduced elevated levels of arsenic and antimony into the rivers and has increased the risks of drinking water contamination in China. Due to their mobility, the majority of the metalloids originating from mining activities are deposited in the river sediments. Read More

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http://dx.doi.org/10.1007/s00248-019-01327-5DOI Listing
February 2019
13 Reads

Plant Identity Influences Foliar Fungal Symbionts More Than Elevation in the Colorado Rocky Mountains.

Microb Ecol 2019 Feb 4. Epub 2019 Feb 4.

Department of Biology, University of New Mexico, Albuquerque, NM, 87114, USA.

Despite colonizing nearly every plant on Earth, foliar fungal symbionts have received little attention in studies on the biogeography of host-associated microbes. Evidence from regional scale studies suggests that foliar fungal symbiont distributions are influenced both by plant hosts and environmental variation in climate and soil resources. However, previous surveys have focused on either one plant host across an environmental gradient or one gradient and multiple plant hosts, making it difficult to disentangle the influence of host identity from the influence of the environment on foliar endophyte communities. Read More

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http://dx.doi.org/10.1007/s00248-019-01336-4DOI Listing
February 2019

The Water Hyacinth Microbiome: Link Between Carbon Turnover and Nutrient Cycling.

Microb Ecol 2019 Feb 1. Epub 2019 Feb 1.

Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.

Water hyacinth (WH), a large floating plant, plays an important role in the biogeochemistry and ecology of many freshwaters globally. Its biogeochemical impact on wetland functioning is strongly mediated by the microbiome associated with its roots. However, little is known about the structure and function of this WH rhizobiome and its relation to wetland ecosystem functioning. Read More

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http://dx.doi.org/10.1007/s00248-019-01331-9DOI Listing
February 2019

Structural and Functional Changes of Groundwater Bacterial Community During Temperature and pH Disturbances.

Microb Ecol 2019 Jan 31. Epub 2019 Jan 31.

Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.

In this study, we report the characteristics of a microbial community in sampled groundwater and elucidate the effects of temperature and pH disturbances on bacterial structure and nitrogen-cycling functions. The predominant phyla of candidate OD1, candidate OP3, and Proteobacteria represented more than half of the total bacteria, which clearly manifested as a "low nucleic acid content (LNA) bacteria majority" type via flow cytometric fingerprint. The results showed that LNA bacteria were more tolerant to rapid changes in temperature and pH, compared to high nucleic acid content (HNA) bacteria. Read More

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http://dx.doi.org/10.1007/s00248-019-01333-7DOI Listing
January 2019
2.973 Impact Factor

Guild Composition of Root-Associated Bacteria Changes with Increased Soil Contamination.

Microb Ecol 2019 Jan 30. Epub 2019 Jan 30.

Department of Environmental Engineering, Technical University of Denmark, 2800, Lyngby, Denmark.

The interaction of plants and root-associated bacteria encourage the removal of soil contaminants. Engineers and scientists have looked at this phenomenon as a possible means of soil treatment (rhizodegradation). In this study, root-associated bacteria were isolated and selected for growth on a model soil contaminant: polycyclic aromatic hydrocarbons. Read More

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http://dx.doi.org/10.1007/s00248-019-01326-6DOI Listing
January 2019

Detection of MRSA of Lineages CC130-mecC and CC398-mecA and Staphylococcus delphini-lnu(A) in Magpies and Cinereous Vultures in Spain.

Microb Ecol 2019 Jan 29. Epub 2019 Jan 29.

Área de Bioquímica y Biología Molecular, Universidad de La Rioja, Madre de Dios 51, 26006, Logroño, Spain.

The aim of this study was to determine the carriage rate of coagulase-positive staphylococci (CoPS) in wild birds and to characterize recovered isolates. Tracheal samples from 324 wild birds, obtained in different Spanish regions during 2015-2016, were screened for CoPS carriage. The antimicrobial resistance profile and the virulence gene content were investigated. Read More

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http://dx.doi.org/10.1007/s00248-019-01328-4DOI Listing
January 2019

Biogeography and Diversity of Freshwater Bacteria on a River Catchment Scale.

Microb Ecol 2019 Jan 28. Epub 2019 Jan 28.

Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.

To illustrate how freshwater bacterial community changes with geographic gradient, we investigated the spatial changes of bacterial abundance and community structures from over 200 samples on a catchment scale in the Songhua River using heterotrophic plate counts, flow cytometry, denaturing gradient gel electrophoresis, and pyrosequencing analysis. The results showed that the mainstream had higher cultivable bacteria and total bacterial concentration than tributaries in the Songhua River catchment. Response model analysis demonstrated that the bacterial community exhibits a biogeographical signature even in an interconnected river network system, and the total bacterial concentration and biodiversity were significantly correlated to latitude (p < 0. Read More

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http://link.springer.com/10.1007/s00248-019-01323-9
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http://dx.doi.org/10.1007/s00248-019-01323-9DOI Listing
January 2019
13 Reads
2.973 Impact Factor