Article Abstract:
High biomass concentrations in the biomass recycle reactor helps in rapid degradation of organic wastes containing surface active agents. An increase in biomass concentrations increases the conversion rates of the substrates and decreases its vulnerability to environmental changes. The shift of the chemostat to the biomass recycle mode leads to an increase in the biomass densities to as high as 6.8 gram, and a decrease in the respiratory potentials of the microbes. The decrease in reactivity is compensated by the increase in the catalytic mass.
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Article Abstract:
Electrophoretic karyotypes (EK) of eight to ten chromosomesized DNAs of the pathogenic fungi Sclerotinia sclerotiorum, S. minor and S. trifoliorum are found in agricultural and natural populations. Six mitotic and three meiotic lineages of the isolates do not show variation in EKs. The experiment reveals that changes in karyotype occur over many generations of nuclear division. Homologous and heterologous probes hybridize to four linkage groups.
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Article Abstract:
The ability of the entomopathogenic fungus Beauveria caledonica to tolerate, solubilize, and transform toxic metal minerals, as well as the physicochemical mechanisms involved in such transformations and metal accumulation by the biomass is examined. It was found that a thick hydrated mucilaginous sheath, which provided a microenvironment for chemical reactions, crystal deposition, and growth, covered B. caledonica hyphae and cords.
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