Molecular evidence for association between the sphingobacterium-like organism "Candidatus comitans" and the myxobacterium Chondromyces crocatus

Article Abstract:

A high level of interstrain relatedness exists between seven strains of the myxobacterium Chondromyces crocatus. However, differences of less than 1% may occur in the 16S rDNA at the strain level. Five of the strains are associated with a companion bacterium, and sequence similarity is greater than 99.1% for all but one strain of C. crocatus and Candidatus comitans, thus being less related to the other companion strains. These companion strains may withstand environmental stresses by inclusion in the aggregates and sporangioles of the myxobacterium.

Research, Myxobacterales, Molecular microbiology, Myxobacteria

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In situ 31-P nuclear magnetic resonance for observation of polyphosphate and catabolite responses of chemostat-cultivated Saccharomyces cerevisiae after alkalinization

Article Abstract:

Alkalinization and anaerobiosis influence the pH buffering and phosphagenic activities of polyphosphate, and the catabolite secretion in chemostat-cultivated Saccharomyces cerevisiae. Cultures with high concentrations of polyphosphate have increased cytosolic pH and accelerated degradation of polyphosphate to small chains. The extracellular pH is normalized with reduced degradation of polyphosphate in dilute media. Complete polyphosphate hydrolysis occurs during anaerobiosis.

Analysis, Observations, Biodegradation, Saccharomyces, Alkalies

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