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The anaerobic biodegradation of petroleum-related compounds.
(1997)
The toxicity and biodegradation of mixtures of thiols, thiophenes, thiophenic acids and aromatic sulfides were determined under anaerobic conditions. Toxicity effects were dependent on the structure of the organosulfur ...
Anaerobic reduction of hexavalent chromium by subsurface microorganisms.
(1999)
Anaerobic sediments from an aquifer contaminated with landfill leachate were used to study the potential for microbial reduction of Cr(VI) to Cr(III). The lightly colored, sandy sediments slowly reduced Cr(VI) in viable, ...
Discovery, purification and characterization of antifungal proteins and other defense-related compounds from tropical plants.
(1999)
To date, we have screened 164 extracts from over 100 different plant species for antifungal activity against Fusarium chlamydosporum, a saprophytic/pathogenic fungus. Out of these 164 crude extracts, 111 had antifungal ...
The ecology and biogeochemistry of sulfate reduction in the terrestrial subsurface.
(1999)
I believe that the ubiquity and importance of sulfate reduction in subsurface environments is a reflection of the diversity of the hydrological and biogeochemical processes which contribute to the availability of sulfate. ...
Molecular systematics of Artemisia section Tridentatae (Asteraceae).
(1997)
Chloroplast DNA restriction site variation was used to examine phylogenetic relationships in Artemisia sect. Tridentatae, a complex of eleven species of woody shrubs dominant in the sagebrush communities of western North ...
Plant competition theory: Empirical tests from the tallgrass prairie.
(1997)
Depending upon the parameter and scale of measurement, evidence for each model exists. Further studies of "natural" resource and disturbance regimes (e.g, fire, urine patches, grazing) with greater temporal complexity are ...
A study of the regulation of transcription in Saccharomyces cerevisiae and Escherichia coli.
(1999)
The focus of this work is to determine the molecular mechanisms involved in rRNA synthesis. More specifically, this research determined which component of the RNAP I transcription complex is involved in the down-regulation ...
Identification and characterization of Myxococcus xanthus mutants deficient in calcofluor white binding.
(1997)
In an attempt to further characterize the Cds phenotypes, it was found that SR171 (a Cds mutant) drastically reduced developmentally regulated tps gene expression similar to esg. Total fatty acid analysis revealed that ...
Studies on the regulation of developmental gene expression and polysaccharide production in Myxococcus xanthus.
(1997)
Fibrils, an extracellular appendage, are composed of polysaccharide and protein. Regulation of fibril production in M. xanthus was studied. In wild-type cells, fibril production was induced upon the stationary phase and ...
Purification, characterization and cDNA cloning of a trypsin inhibitor from Pentaclethra macroloba.
(1998)
The larval growth of the European corn borer, Ostrinia nubilalis , was reduced when grown on artificial diet containing either purified PmTI or PmSTI fusion protein expressed in E. coli. Likewise, high mortalities were ...