Contribution of anaerobic protozoa and methanogens to hindgut metabolic activities of the American cockroach, Periplaneta americana

Article Abstract:

Anaerobic protozoa and their endosymbiotic methanogens have a pronounced effect on the growth and development of the American cockroach. Cultures which did not have the normal hindgut flora showed marked decreases in adult body weight, hindgut volume and methane production. Culture generation time increased. These effects were not completely reversible. Methane production still occurred in the absence of the protozoans but at much lower levels. Elimination of the methanogens resulted in drastic reduction of methane production, but recovery was possible after a few weeks.

Physiological aspects, Methanobacteriaceae, Methanogens, Cockroaches

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Influence of chlorine substituents on rates of oxidation of chlorinated biphenyls by the biphenyl dioxygenase of Burkholderia sp. strain LB400

Article Abstract:

Research has been conducted on the biphenyl dioxygenase from Burkholderia sp. strain LB400. The effect of the chlorine substituents on the catalysis has been investigated.

Oxidation-reduction reaction, Oxidation reduction reactions, Catalysis, Biphenyl compounds, Biphenyls (Class of compounds), Chlorine

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Importance of passive diffusion in the uptake of polychlorinated biphenyls by phagotrophic protozoa

Article Abstract:

Research has been conducted on the unicellular protozoan grazers. The transition in the mechanism of chlorobiphenyl introduction has been investigated.

Polychlorinated biphenyls, Diffusion, Diffusion (Physics)

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