Prey-derived signals regulating duration of the developmental growth phase of Bdellovibrio bacteriovorus
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چکیده
منابع مشابه
Chemotaxis by Bdellovibrio bacteriovorus toward prey.
A chemotaxis assay system that uses a modified Boyden chamber was characterized and used for measurements of chemotaxis by Bdellovibrio bacteriovorus strain UKi2 toward several bacterial species. Bacteria tested included both susceptible and nonsusceptible cells (Escherichia coli, Pseudomonas fluorescens, Bacillus megaterium, and B. bacteriovorus strains UKi2 and D). None was attractive to bdel...
متن کاملIdentification of genes essential for prey-independent growth of Bdellovibrio bacteriovorus HD100.
Bdellovibrio bacteriovorus HD100 is an obligate predatory bacterium that attacks and invades Gram-negative bacteria. The predator requires living bacteria to survive as growth and replication take place inside the bacterial prey. It is possible to isolate mutants that grow and replicate outside prey bacteria. Such mutants are designated host or prey independent, and their nutritional requiremen...
متن کاملThe Bdellovibrio bacteriovorus twin-arginine transport system has roles in predatory and prey-independent growth.
Bdellovibrio bacteriovorus grows in one of two ways: either (i) predatorily [in a host-dependent (HD) manner], when it invades the periplasm of another Gram-negative bacterium, exporting into the prey co-ordinated waves of soluble enzymes using the prey cell contents for growth; or (ii) in a host-independent (HI) manner, when it grows (slowly) axenically in rich media. Periplasmic invasion pote...
متن کاملFate of predator and prey proteins during growth of Bdellovibrio bacteriovorus on Escherichia coli and Pseudomonas syringae prey.
A two-dimensional electrophoretic analysis of protein distribution followed by identification of selected proteins by mass spectrometry was performed on fresh bdellovibrio cultures containing attack phase cells of the predatory bacterium Bdellovibrio bacteriovorus strain 109J-1 and the remains of an Escherichia coli or a Pseudomonas syringae pv. tomato prey. Cleavage of the peptidoglycan-associ...
متن کاملHeat shock-induced axenic growth of Bdellovibrio bacteriovorus.
The bdellovibrios are obligately predatory bacteria that attack other gram-negative bacteria. They grow only in the periplasmic space of prey unless they mutate to forms that can grow axenically. A culture medium that promoted enhanced growth of prey-independent bdellovibrios was developed. The ability of this medium to support the growth of prey-dependent bdellovibrios was tested under transcr...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1990
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.172.7.4002-4007.1990