Glucose-induced morphological variation in Selenomonas ruminantium
نویسندگان
چکیده
منابع مشابه
Characterization of lateral flagella of Selenomonas ruminantium.
Selenomonas ruminantium produces a tuft of flagella near the midpoint of the cell body and swims by rotating the cell body along the cell's long axis. The flagellum is composed of a single kind of flagellin, which is heavily glycosylated. The hook length of S. ruminantium is almost double that of Salmonella.
متن کاملInfluence of CH4 production by Methanobacterium ruminantium on the fermentation of glucose and lactate by Selenomonas ruminantium.
A method is described for increasing the production of H2 from glucose or lactate by Selenomonas ruminantium by sequential transfers in media containing pregrown Methanobacterium ruminantium. The methanogen uses the H2 formed by the selenomonad to reduce CO2 to CH4. Analysis of fermentation products from glucose showed that lactate was the major product formed from glucose by S. ruminantium alo...
متن کاملAmmonia assimilation and glutamate formation in the anaerobe Selenomonas ruminantium.
Selenomonas ruminantium was found to possess two pathways for NH4+ assimilation that resulted in net glutamate synthesis. One pathway fixed NH4+ through the action of an NADPH-linked glutamate dehydrogenase (GDH). Maximal GDH activity required KCl (about 0.48 M), but a variety of monovalent salts could replace KCl. Complete substrate saturation of the enzyme by NH4+ did not occur, and apparent ...
متن کاملFactors affecting lactate and malate utilization by Selenomonas ruminantium.
Lactate utilization by Selenomonas ruminantium is stimulated in the presence of malate. Because little information is available describing lactate-plus-malate utilization by this organism, the objective of this study was to evaluate factors affecting utilization of these two organic acids by two strains of S. ruminantium. When S. ruminantium HD4 and H18 were grown in batch culture on DL-lactate...
متن کاملMultiple lactate dehydrogenase activities of the rumen bacterium Selenomonas ruminantium.
The lactate utilizing strain of Selenomonas ruminantium 5934e was found to contain three lactate dehydrogenase (LDH) activities in sonicated cell extracts. One activity, an NAD dependent L-LDH (L-nLDH) was measured at 15-fold greater levels in extracts of cells grown to mid-exponential phase on glucose compared to cells grown to the equivalent growth stage on DL-lactate. A second nLDH activity ...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1984
ISSN: 0378-1097
DOI: 10.1016/0378-1097(84)90009-0