3,927 results match your criteria Microbial ecology[Journal]


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

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
1 Read

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

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
1 Read

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

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

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
5 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
2 Reads
2.973 Impact Factor

The Dynamic of a River Model Bacterial Community in Two Different Media Reveals a Divergent Succession and an Enhanced Growth of Most Strains Compared to Monocultures.

Microb Ecol 2019 Jan 24. Epub 2019 Jan 24.

Ecology of Aquatic Systems, Université libre de Bruxelles, Campus Plaine, CP 221, 1050, Brussels, Belgium.

The dynamic of a community of 20 bacterial strains isolated from river water was followed in R2 broth and in autoclaved river water medium for 27 days in batch experiments. At an early stage of incubation, a fast-growing specialist strain, Acinetobater sp., dominated the community in both media. Read More

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http://dx.doi.org/10.1007/s00248-019-01322-wDOI Listing
January 2019

Rhizosphere Microbiomes from Root Knot Nematode Non-infested Plants Suppress Nematode Infection.

Microb Ecol 2019 Jan 21. Epub 2019 Jan 21.

Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210040, China.

Root knot nematodes (RKN, Meloidogyne spp.) are serious pathogens of numerous crops worldwide. Understanding the roles plant rhizosphere soil microbiome play during RKN infection is very important. Read More

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http://link.springer.com/10.1007/s00248-019-01319-5
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http://dx.doi.org/10.1007/s00248-019-01319-5DOI Listing
January 2019
3 Reads

Taurine Is a Major Carbon and Energy Source for Marine Prokaryotes in the North Atlantic Ocean off the Iberian Peninsula.

Microb Ecol 2019 Jan 21. Epub 2019 Jan 21.

Department of Limnology and Bio-Oceanography, Center of Functional Ecology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.

Taurine, an amino acid-like compound, acts as an osmostress protectant in many marine metazoans and algae and is released via various processes into the oceanic dissolved organic matter pool. Taurine transporters are widespread among members of the marine prokaryotic community, tentatively indicating that taurine might be an important substrate for prokaryotes in the ocean. In this study, we determined prokaryotic taurine assimilation and respiration throughout the water column along two transects in the North Atlantic off the Iberian Peninsula. Read More

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http://dx.doi.org/10.1007/s00248-019-01320-yDOI Listing
January 2019

High-Throughput Sequencing of the 16S rRNA Gene as a Survey to Analyze the Microbiomes of Free-Living Ciliates Paramecium.

Microb Ecol 2019 Jan 19. Epub 2019 Jan 19.

Department of Microbiology, Faculty of Biology, Saint Petersburg State University, Saint Petersburg, Russia.

Ciliates are the largest group of ubiquitous aquatic bacterivorous protists, and many species are easily cultivated. However, only few studies reported prokaryotic communities naturally associated with ciliate cells. Herein, we analyzed the microbiome composition of several strains of Paramecium (Ciliophora) originating from different locations and belonging to two morpho-species by high-throughput sequencing (HTS) of the 16S rRNA gene. Read More

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http://dx.doi.org/10.1007/s00248-019-01321-xDOI Listing
January 2019

Effect of the Nursing Mother on the Gut Microbiome of the Offspring During Early Mouse Development.

Microb Ecol 2019 Jan 10. Epub 2019 Jan 10.

Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, Neuherberg, Germany.

The development of the gut microbiome is influenced by several factors. It is acquired during and after birth and involves both maternal and environmental factors as well as the genetic disposition of the offspring. However, it is unclear if the microbiome development is directly triggered by the mode of delivery and very early contact with the mother or mostly at later stages of initial development mainly by breast milk provided by the mother. Read More

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http://link.springer.com/10.1007/s00248-019-01317-7
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http://dx.doi.org/10.1007/s00248-019-01317-7DOI Listing
January 2019
6 Reads

"Candidatus Hafkinia simulans" gen. nov., sp. nov., a Novel Holospora-Like Bacterium from the Macronucleus of the Rare Brackish Water Ciliate Frontonia salmastra (Oligohymenophorea, Ciliophora): Multidisciplinary Characterization of the New Endosymbiont and Its Host.

Microb Ecol 2019 Jan 9. Epub 2019 Jan 9.

Department of Biology, University of Pisa, 56126, Pisa, Italy.

We characterized a novel Holospora-like bacterium (HLB) (Alphaproteobacteria, Holosporales) living in the macronucleus of the brackish water ciliate Frontonia salmastra. This bacterium was morphologically and ultrastructurally investigated, and its life cycle and infection capabilities were described. We also obtained its 16S rRNA gene sequence and performed in situ hybridization experiments with a specifically-designed probe. Read More

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http://dx.doi.org/10.1007/s00248-018-1311-0DOI Listing
January 2019

Diversity and Composition of Pelagic Prokaryotic and Protist Communities in a Thin Arctic Sea-Ice Regime.

Microb Ecol 2019 Jan 8. Epub 2019 Jan 8.

CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Porto, Portugal.

One of the most prominent manifestations of climate change is the changing Arctic sea-ice regime with a reduction in the summer sea-ice extent and a shift from thicker, perennial multiyear ice towards thinner, first-year ice. These changes in the physical environment are likely to impact microbial communities, a key component of Arctic marine food webs and biogeochemical cycles. During the Norwegian young sea ICE expedition (N-ICE2015) north of Svalbard, seawater samples were collected at the surface (5 m), subsurface (20 or 50 m), and mesopelagic (250 m) depths on 9 March, 27 April, and 16 June 2015. Read More

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http://dx.doi.org/10.1007/s00248-018-01314-2DOI Listing
January 2019
1 Read

Thermal Tolerance in Green Hydra: Identifying the Roles of Algal Endosymbionts and Hosts in a Freshwater Holobiont Under Stress.

Microb Ecol 2019 Jan 6. Epub 2019 Jan 6.

Department of Biosciences, Rice University, 6100 S. Main St., Houston, TX, 77005, USA.

It has been proposed that holobionts (host-symbiont units) could swap endosymbionts, rapidly alter the hologenome (host plus symbiont genome), and increase their stress tolerance. However, experimental tests of individual and combined contributions of hosts and endosymbionts to holobiont stress tolerance are needed to test this hypothesis. Here, we used six green hydra (Hydra viridissima) strains to tease apart host (hydra) and symbiont (algae) contributions to thermal tolerance. Read More

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http://dx.doi.org/10.1007/s00248-018-01315-1DOI Listing
January 2019

Bioreactivity and Microbiome of Biodeposits from Filter-Feeding Bivalves.

Microb Ecol 2019 Jan 5. Epub 2019 Jan 5.

Marine Science Center, Northeastern University, Nahant, MA, 01908, USA.

Bivalves serve an important ecosystem function in delivering organic matter from pelagic to benthic zones and are important in mediating eutrophication. However, the fate of this organic matter (i.e. Read More

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http://dx.doi.org/10.1007/s00248-018-01312-4DOI Listing
January 2019

Vertical Distribution of Bathyarchaeotal Communities in Mangrove Wetlands Suggests Distinct Niche Preference of Bathyarchaeota Subgroup 6.

Microb Ecol 2019 Jan 5. Epub 2019 Jan 5.

Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, People's Republic of China.

Bathyarchaeota is a diverse, abundant, and widespread archaeal phylum that may play an important role in global carbon cycling. The vertical distribution of Bathyarchaeota and environmental impact on bathyarchaeotal community in deep-sea and lake sediments are known; however, little information is available on Bathyarchaeota in eutrophic and brackish environments, such as mangrove wetlands. In the current study, we investigated the bathyarchaeotal community in the mangrove ecosystem of Futian Nature Reserve, Shenzhen. Read More

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http://dx.doi.org/10.1007/s00248-018-1309-7DOI Listing
January 2019

Metagenomic Analysis of Zinc Surface-Associated Marine Biofilms.

Microb Ecol 2019 Jan 5. Epub 2019 Jan 5.

Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China.

Biofilms are a significant source of marine biofouling. Marine biofilm communities are established when microorganisms adhere to immersed surfaces. Despite the microbe-inhibiting effect of zinc surfaces, microbes can still attach to the surface and form biofilms. Read More

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http://link.springer.com/10.1007/s00248-018-01313-3
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http://dx.doi.org/10.1007/s00248-018-01313-3DOI Listing
January 2019
1 Read

Correction to: Co-occurrence Networks Among Bacteria and Microbial Eukaryotes of Lake Baikal During a Spring Phytoplankton Bloom.

Microb Ecol 2019 Jan 5. Epub 2019 Jan 5.

Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3, Ulan-Batorskaya, Irkutsk, 664033, Russia.

The original version of this article unfortunately contained mistakes in the legends of figures. Read More

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http://dx.doi.org/10.1007/s00248-018-1307-9DOI Listing
January 2019

Latitudinal and Vertical Variation of Synechococcus Assemblage Composition Along 170° W Transect From the South Pacific to the Arctic Ocean.

Microb Ecol 2019 Jan 4. Epub 2019 Jan 4.

Division of Life Science, The Hong Kong University of Science and Technology, Kowloon, Hong Kong.

Synechococcus is one of the most widely distributed and abundant picocyanobacteria in the global oceans. Although latitudinal variation of Synechococcus assemblage in marine surface waters has been observed, few studies compared Synechococcus assemblage composition in surface and subsurface waters at the basin scale. Here, we report marine Synechococcus diversity in the surface and deep chlorophyll maximum (DCM) layers along 170° W from the South Pacific to the Arctic Ocean in summer. Read More

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http://dx.doi.org/10.1007/s00248-018-1308-8DOI Listing
January 2019

Moisture Is More Important than Temperature for Assembly of Both Potentially Active and Whole Prokaryotic Communities in Subtropical Grassland.

Microb Ecol 2019 Jan 3. Epub 2019 Jan 3.

Centro Interdisciplinar de Pesquisas em Biotecnologia - CIP-Biotec, Universidade Federal do Pampa, Campus São Gabriel, Avenida Antonio Trilha, 1847, São Gabriel, 97300-000, Brazil.

Moisture and temperature play important roles in the assembly and functioning of prokaryotic communities in soil. However, how moisture and temperature regulate the function of niche- versus neutral-based processes during the assembly of these communities has not been examined considering both the total microbial community and the sole active portion with potential for growth in native subtropical grassland. We set up a well-controlled microcosm-based experiment to investigate the individual and combined effects of moisture and temperature on soil prokaryotic communities by simulating subtropical seasons in grassland. Read More

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http://dx.doi.org/10.1007/s00248-018-1310-1DOI Listing
January 2019

Colonization and Competition Dynamics of Plant Growth-Promoting/Inhibiting Bacteria in the Phytosphere of the Duckweed Lemna minor.

Microb Ecol 2019 Jan 2. Epub 2019 Jan 2.

Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.

Despite the considerable role of aquatic plant-associated bacteria in host plant growth and nutrient cycling in aquatic environments, the mode of their plant colonization has hardly been understood. This study examined the colonization and competition dynamics of a plant growth-promoting bacterium (PGPB) and two plant growth-inhibiting bacteria (PGIB) in the aquatic plant Lemna minor (common duckweed). When inoculated separately to L. Read More

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http://dx.doi.org/10.1007/s00248-018-1306-xDOI Listing
January 2019

Microbial Diversity in an Arid, Naturally Saline Environment.

Microb Ecol 2018 Dec 28. Epub 2018 Dec 28.

Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany.

The Arava Valley in is a rock desert within the Great African Rift valley. Soil from this area is covered with a salt crust. Here, we report microbial diversity from arid, naturally saline samples collected near Ein Yahav from the Arava Valley by culture-independent as well as culture-dependent analysis. Read More

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http://dx.doi.org/10.1007/s00248-018-1301-2DOI Listing
December 2018

Floral and Foliar Source Affect the Bee Nest Microbial Community.

Microb Ecol 2018 Dec 14. Epub 2018 Dec 14.

Graduate Program in Microbiology, University of California, 900 University Ave., Riverside, CA, 92521, USA.

Managed pollinators such as the alfalfa leafcutting bee, Megachile rotundata, are essential to the production of a wide variety of agricultural crops. These pollinators encounter a diverse array of microbes when foraging for food and nest-building materials on various plants. To test the hypothesis that food and nest-building source affects the composition of the bee-nest microbiome, we exposed M. Read More

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http://link.springer.com/10.1007/s00248-018-1300-3
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http://dx.doi.org/10.1007/s00248-018-1300-3DOI Listing
December 2018
8 Reads

Dynamics of Biofilm Formation by Salmonella Typhimurium and Beef Processing Plant Bacteria in Mono- and Dual-Species Cultures.

Microb Ecol 2018 Dec 13. Epub 2018 Dec 13.

Agriculture and Agri-Food Canada Lacombe Research and Development Centre, 6000 C & E Trail, Lacombe, Alberta, T4L 1W1, Canada.

This study aimed to determine the impact of bacteria from a beef plant conveyor belt on the biofilm formation of Salmonella in dual-species cultures. Beef plant isolates (50) including 18 Gram-negative aerobes (GNA), 8 Gram-positive aerobes (GPA), 5 lactic acid bacteria (LAB), 9 Enterobacteriaceae (EB), and 10 generic Escherichia coli (GEC) were included for developing biofilms in mono- and co-culture with S. Typhimurium at 15 °C for 6 days. Read More

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http://dx.doi.org/10.1007/s00248-018-1304-zDOI Listing
December 2018

Comparative Analysis of Anuran Amphibian Skin Microbiomes Across Inland and Coastal Wetlands.

Microb Ecol 2018 Dec 8. Epub 2018 Dec 8.

Department of Biology, East Carolina University, Greenville, NC, USA.

Amphibians host a community of microbes on their skin that helps resist infectious disease via the dual influence of anti-pathogenic microbial species and emergent community dynamics. Many frogs rely on freshwater habitats, but salinization is rapidly increasing saltwater concentrations in wetlands around the globe, increasing the likelihood that frogs will come into contact with salt-contaminated habitats. Currently, we know little about how increased salt exposure will affect the symbiotic relationship between the skin microbes and frog hosts. Read More

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http://dx.doi.org/10.1007/s00248-018-1295-9DOI Listing
December 2018
2 Reads

Soil Type and Cyanobacteria Species Influence the Macromolecular and Chemical Characteristics of the Polysaccharidic Matrix in Induced Biocrusts.

Microb Ecol 2018 Dec 8. Epub 2018 Dec 8.

Department of Agrifood Production and Environmental Sciences (DISPAA), University of Florence, Florence, Italy.

Inoculation of soils with cyanobacteria is proposed as a sustainable biotechnological technique for restoration of degraded areas in drylands due to the important role that cyanobacteria and their exopolysaccharides (EPS) play in the environment. So far, few studies have analyzed the macromolecular and chemical characteristics of the polysaccharidic matrix in induced cyanobacterial biocrusts and the scarce existing studies have mainly focused on sandy soil textures. However, the characteristics of the cyanobacterial polysaccharidic matrix may greatly depend on soil type. Read More

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http://dx.doi.org/10.1007/s00248-018-1305-yDOI Listing
December 2018

Fouling Microbial Communities on Plastics Compared with Wood and Steel: Are They Substrate- or Location-Specific?

Microb Ecol 2018 Dec 8. Epub 2018 Dec 8.

Biology Department, College of Science, Sultan Qaboos University, P. O. Box 36, PC, 123, Al Khoud, Sultanate of Oman.

Although marine biofouling has been widely studied on different substrates, information on biofouling on plastics in the Arabian Gulf is limited. Substrate- and location-specific effects were investigated by comparing the microbial communities developed on polyethylene terephthalate (PET) and polyethylene (PE) with those on steel and wood, at two locations in the Sea of Oman. Total biomass was lower on PET and PE than on steel and wood. Read More

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http://dx.doi.org/10.1007/s00248-018-1303-0DOI Listing
December 2018
1 Read

Salt-Enrichment Impact on Biomass Production in a Natural Population of Peatland Dwelling Arcellinida and Euglyphida (Testate Amoebae).

Microb Ecol 2018 Dec 11. Epub 2018 Dec 11.

Department of Geography, University of Exeter, Exeter, EX4 4RJ, UK.

Unicellular free-living microbial eukaryotes of the order Arcellinida (Tubulinea; Amoebozoa) and Euglyphida (Cercozoa; SAR), commonly termed testate amoebae, colonise almost every freshwater ecosystem on Earth. Patterns in the distribution and productivity of these organisms are strongly linked to abiotic conditions-particularly moisture availability and temperature-however, the ecological impacts of changes in salinity remain poorly documented. Here, we examine how variable salt concentrations affect a natural community of Arcellinida and Euglyphida on a freshwater sub-Antarctic peatland. Read More

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http://dx.doi.org/10.1007/s00248-018-1296-8DOI Listing
December 2018
2 Reads

Penicillin Trunk Injection Affects Bacterial Community Structure in Citrus Trees.

Microb Ecol 2018 Dec 1. Epub 2018 Dec 1.

Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA.

Huanglongbing (HLB), caused by Candidatus Liberibacter asiaticus (CLas), an uncultured α-proteobacterium, is the most destructive disease of citrus trees worldwide. In previous studies, trunk injections of penicillin reduced CLas titers and HLB symptoms in citrus. However, antibiotic effects on the whole plant microbial community, which include effects on taxa that interact with CLas, have not yet been addressed. Read More

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http://link.springer.com/10.1007/s00248-018-1302-1
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http://dx.doi.org/10.1007/s00248-018-1302-1DOI Listing
December 2018
12 Reads
2.973 Impact Factor

Microbial Enzymatic Activities and Community-Level Physiological Profiles (CLPP) in Subsoil Layers Are Altered by Harvest Residue Management Practices in a Tropical Eucalyptus grandis Plantation.

Microb Ecol 2018 Nov 29. Epub 2018 Nov 29.

ESALQ, Univ São Paulo, Piracicaba, SP, 3418-900, Brazil.

Harvest residue management is a key issue for the sustainability of Eucalyptus plantations established on poor soils. Soil microbial communities contribute to soil fertility by the decomposition of the organic matter (OM), but little is known about the effect of whole-tree harvesting (WTH) in comparison to stem only harvesting (SOH) on soil microbial functional diversity in Eucalyptus plantations. We studied the effects of harvest residue management (branches, leaves, bark) of Eucalyptus grandis trees on soil enzymatic activities and community-level physiological profiles in a Brazilian plantation. Read More

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http://dx.doi.org/10.1007/s00248-018-1298-6DOI Listing
November 2018

Bacterial Communities in Areas of Oil and Methane Seeps in Pelagic of Lake Baikal.

Microb Ecol 2018 Nov 27. Epub 2018 Nov 27.

Siberian Branch of the Russian Academy of Sciences, Limnological Institute, Ulan-Batorskaya Street 3, 664033, Irkutsk, Russia.

We have assessed the diversity of bacteria near oil-methane (area I) and methane (area II) seeps in the pelagic zone of Lake Baikal using massive parallel sequencing of 16S rRNA, pmoA, and mxaF gene fragments amplified from total DNA. At depths from the surface to 100 m, sequences belonging to Cyanobacteria dominated. In the communities to a depth of 200 m of the studied areas, Proteobacteria dominated the deeper layers of the water column. Read More

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http://dx.doi.org/10.1007/s00248-018-1299-5DOI Listing
November 2018

Distribution and Variation of Bacterial Endosymbiont and "Candidatus Liberibacter asiaticus" Titer in the Huanglongbing Insect Vector, Diaphorina citri Kuwayama.

Microb Ecol 2018 Nov 24. Epub 2018 Nov 24.

Boyce Thompson Institute, Ithaca, NY, USA.

The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, is an economic insect pest in most citrus-growing regions and the vector of 'Candidatus Liberibacter asiaticus' (CLas), one of at least three known bacteria associated with Huanglongbing (HLB or citrus greening disease). D. citri harbors bacterial endosymbionts, including Wolbachia pipientis (strain Wolbachia wDi), 'Candidatus Carsonella ruddii,' and 'Candidatus Profftella armatura. Read More

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http://link.springer.com/10.1007/s00248-018-1290-1
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http://dx.doi.org/10.1007/s00248-018-1290-1DOI Listing
November 2018
5 Reads
2.973 Impact Factor

The Oral Bacterium Fusobacterium nucleatum Binds Staphylococcus aureus and Alters Expression of the Staphylococcal Accessory Regulator sarA.

Microb Ecol 2018 Nov 24. Epub 2018 Nov 24.

Division of Constitutive and Regenerative Sciences, School of Dentistry, University of California, Los Angeles, CA, USA.

Staphylococcus aureus, an opportunistic pathogen member of the nasal and skin microbiota, can also be found in human oral samples and has been linked to infectious diseases of the oral cavity. As the nasal and oral cavities are anatomically connected, it is currently unclear whether S. aureus can colonize the oral cavity and become part of the oral microbiota, or if its presence in the oral cavity is simply transient. Read More

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http://link.springer.com/10.1007/s00248-018-1291-0
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http://dx.doi.org/10.1007/s00248-018-1291-0DOI Listing
November 2018
8 Reads

Small-scale Variation of Testate Amoeba Assemblages: the Effect of Site Heterogeneity and Empty Shell Inclusion.

Microb Ecol 2018 Nov 23. Epub 2018 Nov 23.

Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic.

Studies on testate amoeba species distribution at small scales (i.e., single peatland sites) are rare and mostly focus on bogs or mineral-poor Sphagnum fens, leaving spatial patterns within mineral-rich fens completely unexplored. Read More

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http://link.springer.com/10.1007/s00248-018-1292-z
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http://dx.doi.org/10.1007/s00248-018-1292-zDOI Listing
November 2018
5 Reads

Soil Properties and Multi-Pollution Affect Taxonomic and Functional Bacterial Diversity in a Range of French Soils Displaying an Anthropisation Gradient.

Microb Ecol 2018 Nov 22. Epub 2018 Nov 22.

Université de Lorraine, CNRS, LIEC, 54000, Nancy, France.

The intensive industrial activities of the twentieth century have left behind highly contaminated wasteland soils. It is well known that soil parameters and the presence of pollutants shape microbial communities. But in such industrial waste sites, the soil multi-contamination with organic (polycyclic aromatic hydrocarbons, PAH) and metallic (Zn, Pb, Cd) pollutants and long-term exposure may induce a selection pressure on microbial communities that may modify soil functioning. Read More

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http://dx.doi.org/10.1007/s00248-018-1297-7DOI Listing
November 2018
9 Reads

The Influence of Habitat and Phylogeny on the Skin Microbiome of Amphibians in Guatemala and Mexico.

Microb Ecol 2018 Nov 22. Epub 2018 Nov 22.

Department of Biology, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA, 94132, USA.

Microbial symbionts are increasingly recognized as playing a critical role in organismal health across a wide range of hosts. Amphibians are unique hosts in that their skin helps to regulate the exchange of water, ions, and gases, and it plays an active role in defense against pathogens through the synthesis of anti-microbial peptides. The microbiome of amphibian skin includes a diverse community of bacteria known to defend against pathogens, including the global pandemic lineage of Batrachochytrium dendrobatidis associated with mass amphibian die-offs. Read More

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http://dx.doi.org/10.1007/s00248-018-1288-8DOI Listing
November 2018
10 Reads

Gut and Whole-Body Microbiota of the Honey Bee Separate Thriving and Non-thriving Hives.

Microb Ecol 2018 Nov 22. Epub 2018 Nov 22.

School of Microbiology and APC Microbiome Ireland, Food Science Building, University College Cork, Cork, T12 YN60, Ireland.

The recent worldwide decline of honey bee colonies is a major ecological problem which also threatens pollinated crop production. Several interacting stressors such as environmental pressures and pathogens are suspected. Recently, the gut microbiota has emerged as a critical factor affecting bee health and fitness. Read More

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http://dx.doi.org/10.1007/s00248-018-1287-9DOI Listing
November 2018
14 Reads

Population and Culture Age Influence the Microbiome Profiles of House Dust Mites.

Microb Ecol 2018 Nov 21. Epub 2018 Nov 21.

Department of Ecology and Evolutionary Biology, University of Michigan, 3600 Varsity Drive, Ann Arbor, MI, 48109-2228, USA.

Interactions with microorganisms might enable house dust mites (HDMs) to derive nutrients from difficult-to-digest structural proteins and to flourish in human houses. We tested this hypothesis by investigating the effects of changes in the mite culture growth and population of two HDM species on HDM microbiome composition and fitness. Growing cultures of laboratory and industrial allergen-producing populations of Dermatophagoides farinae (DFL and DFT, respectively) and Dermatophagoides pteronyssinus (DPL and DPT, respectively) were sampled at four time points. Read More

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http://dx.doi.org/10.1007/s00248-018-1294-xDOI Listing
November 2018
8 Reads

Delivery of a Genetically Marked Serratia AS1 to Medically Important Arthropods for Use in RNAi and Paratransgenic Control Strategies.

Microb Ecol 2018 Nov 20. Epub 2018 Nov 20.

Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, P.O.Box: 14155-6446, Tehran, Iran.

Understanding how arthropod vectors acquire their bacteria is essential for implementation of paratransgenic and RNAi strategies using genetically modified bacteria to control vector-borne diseases. In this study, a genetically marked Serratia AS1 strain expressing the mCherry fluorescent protein (mCherry-Serratia) was used to test various acquisition routes in six arthropod vectors including Anopheles stephensi, Culex pipiens, Cx. quinquefaciatus, Cx. Read More

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http://dx.doi.org/10.1007/s00248-018-1289-7DOI Listing
November 2018
13 Reads

Differential Response of Cafeteria roenbergensis to Different Bacterial and Archaeal Prey Characteristics.

Microb Ecol 2018 Nov 17. Epub 2018 Nov 17.

Department of Limnology and Bio-Oceanography, Center of Functional Ecology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.

In the marine environment, the abundance of Bacteria and Archaea is either controlled bottom-up via nutrient availability or top-down via grazing. Heterotrophic nanoflagellates (HNF) are mainly responsible for prokaryotic grazing losses besides viral lysis. However, the grazing specificity of HNF on specific bacterial and archaeal taxa is under debate. Read More

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http://link.springer.com/10.1007/s00248-018-1293-y
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http://dx.doi.org/10.1007/s00248-018-1293-yDOI Listing
November 2018
10 Reads

Assessing the Microbiota of Black Soldier Fly Larvae (Hermetia illucens) Reared on Organic Waste Streams on Four Different Locations at Laboratory and Large Scale.

Microb Ecol 2018 Nov 14. Epub 2018 Nov 14.

Department of Microbial and Molecular Systems (M2S), Lab4Food, KU Leuven, Campus Geel, Kleinhoefstraat 4, 2440, Geel, Belgium.

This study aimed to gain insight into the microbial quality, safety and bacterial community composition of black soldier fly larvae (Hermetia illucens) reared at different facilities on a variety of organic waste streams. For seven rearing cycles, both on laboratory-scale and in large-scale facilities at several locations, the microbiota of the larvae was studied. Also samples of the substrate used and the residue (= leftover substrate after rearing, existing of non-consumed substrate, exuviae and faeces) were investigated. Read More

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http://link.springer.com/10.1007/s00248-018-1286-x
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http://dx.doi.org/10.1007/s00248-018-1286-xDOI Listing
November 2018
1 Read