منابع مشابه
Spectral Measurement of Common Soil Phosphates
Compounds of Al, Fe, Ca, and Mg phosphates were particularly found in the Lake Okeechobee drainage basin in Florida. Identification of the spectral characteristics of these compounds would improve sensing of phosphorus (P) concentration in soil samples. This study investigated the effects of common soil P compounds on reflectance spectra of sandy soils using ultraviolet (UV), visible (VIS), and...
متن کاملSeparation and purification of bacteria from soil.
Bacteria were released and separated from soil by a simple blending-centrifugation procedure. The percent yield of bacterial cells (microscopic counts) in the supernatants varied over a wide range depending on the soil type. The superantants contained large amounts of noncellular organic material and clay particles. Further purification of the bacterial cells was obtained by centrifugation in d...
متن کاملCommunication Among Phages, Bacteria, and Soil Environments
Bacteriophages (phages) are viruses that infect members of domain Bacteria, contrasting the viruses of domains Archaea or Eukarya. Ecology is the interaction of organisms with environments, and those interactions, broadly speaking, may be depicted as forms of communication – the movement of information between or among entities, or at least the presentation of potentially detectable signals. Re...
متن کاملExometabolite niche partitioning among sympatric soil bacteria
Soils are arguably the most microbially diverse ecosystems. Physicochemical properties have been associated with the maintenance of this diversity. Yet, the role of microbial substrate specialization is largely unexplored since substrate utilization studies have focused on simple substrates, not the complex mixtures representative of the soil environment. Here we examine the exometabolite compo...
متن کاملIsolation of lightning-competent soil bacteria.
Artificial transformation is typically performed in the laboratory by using either a chemical (CaCl(2)) or an electrical (electroporation) method. However, laboratory-scale lightning has been shown recently to electrotransform Escherichia coli strain DH10B in soil. In this paper, we report on the isolation of two "lightning-competent" soil bacteria after direct electroporation of the Nycodenz b...
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ژورنال
عنوان ژورنال: Science
سال: 1916
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.44.1129.246