Concept

Amoeba

Related publications (55)

Stealth proteins: in silico identification of a novel protein family rendering bacterial pathogens invisible to host immune defense

There are a variety of bacterial defense strategies to survive in a hostile environment. Generation of extracellular polysaccharides has proved to be a simple but effective strategy against the host's innate immune system. A comparative genomics approach l ...

2005

Survey of the chemical defence potential of diatoms: screening of fifty one species for alpha,beta,gamma,delta-unsaturated aldehydes

Max Planck Institute for Chemical Ecology, Hans-Knoill-Str. 8, D-07745 Jena, Germany. In recent years a negative influence of diatom-derived alpha,beta,gamma,delta-unsaturated aldehydes (PUA) on the reproductive success of copepods and invertebrates has be ...

2005

Relationship between atmospheric pollution characterized by NO2 concentrations and testate amoebae density and diversity

Edward Mitchell

To assess the potential use of testate amoebae as biomonitors of atmospheric pollution we studied the relationship between atmospheric nitrogen dioxide (NO2) pollution and testate amoebae density, diversity, and community structure (Protista: Rhizopoda) in ...

2004

Response of testate amoebae (Protozoa) to N and P fertilization in an Arctic wet sedge tundra

Edward Mitchell

There are few data on the effect of long-term manipulations on soil protozoa, and almost nothing is known about soil protozoa in Alaska. I studied the response of testate amoebae to nitrogen and phosphorus addition in an Arctic fen, at Toolik Lake Long-Ter ...

2004

Population dynamics and food preferences of the testate amoeba Nebela tincta major-bohemica-collaris complex (Protozoa) in a Sphagnum peatland

Edward Mitchell

Population dynamics and food preferences of the testate amoeba species complex Nebela tincta major-bohemica-collaris (“Nebela collaris sensu lato”) were described from a Sphagnum peatland over one growing season. The average abundance of Nebela collaris se ...

2003

Structure of microbial communities in Sphagnum peatlands and effect of atmospheric carbon dioxide enrichment

Alexandre Buttler, Edward Mitchell, Jean-Michel Gobat

Little is known about the structure of microbial communities in Sphagnum peatlands, and the potential effects of the increasing atmospheric CO2 concentration on these communities are not known. We analyzed the structure of microbial communities in five Sph ...

2003

A method for introducing a nucleic acid into a eukaryotic cell

Florian Maria Wurm, Martin Jordan, Philippe Pierre Girard

Described is method for introducing a desired nucleic acid into a eukaryotic host cell, said method comprising a) admixing the desired nucleic acid, a mono- and/or divalent metal cation and a eukaryotic host cell lacking a cell wallb) incubating the mixtur ...

2003

Relationships among testate amoebae (Protozoa), vegetation and water chemistry in five Sphagnum-dominated peatlands in Europe

Alexandre Buttler, Edward Mitchell

To study the relationships between groups of organisms and the degree to which these relationships are consistent across major climatic gradients, we analysed the testate amoeba (Protozoa) communities, vegetation and water chemistry of one peatland in five ...

2000

Horizontal distribution patterns of testate amoebae (Protozoa) in a Sphagnum magellanicum carpet

Alexandre Buttler, Edward Mitchell, Jean-Michel Gobat, Daniel Borcard

The distribution of soil microorganisms is generally believed to be patchy and to reflect habitat heterogeneity. Despite this general rule, the amount of existing data oil species distribution patterns is scarce. Testate amoebae (Protozoa; Rhizopoda) are a ...

2000

Ecology of testate amoebae (Protozoa : Rhizopoda) in Sphagnum peatlands in the Jura mountains, Switzerland and France

Alexandre Buttler, Edward Mitchell, Jean-Michel Gobat

Testate amoebae (Protozoa) living in Sphagnum peatlands are important environmental and paleoecological indicators. The distribution of these animals is closely related to soil moisture variables. This study examines the ecology of sphagnicolous testate am ...

1999

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