Effect of oxidative stress on the biosynthesis of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate and isoprenoids by several bacterial strains.

In this study, the gram-negative bacteria Xanthomonas campestris, Xanthomonas maltophilia, and Pseudomonas putida, facultative parasites of plants and animals, were shown to accumulate 2-C-methyl-d-erythritol-2,4-cyclopyrophosphate (MEC) in response to benzyl-viologen-induced oxidative stress. Corynebacterium ammoniagenes mutants capable of accumulating MEC in the absence of an exogenous oxidative stress inducer were obtained. Isoprenoid synthesis and MEC synthesis in these and other bacteria were shown to be alternative processes, while biosynthesis of brominated polyene xanthomonadin (an antioxidant pigment of X.

[Participation of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate in reactions of bacteria on oxidative stress and their persistence in macrophages].

In aerated medium, Corynebacterium ammoniagenes cells accumulate 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (MEC) during heat shock and in the presence of O2--generating compounds or ozone. The ability to accumulate MEC was genetically transformed from C. ammoniagenes to E.

The ability of a recombinant Escherichia coli strain to synthesize 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate correlates with its tolerance to in vitro induced oxidative stress and to the bactericidal action of murine peritoneal macrophages.

A number of bacteria are able to synthesize 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (BOSS) in response to oxidative stress. Here we show that the ability to synthesize BOSS can be genetically transferred from Corynebacterium ammoniagenes to Escherichia coli. A total DNA library from C.

[Effect of antiseptics and redox-cycling agents on Corynebacterium ammoniagenes and related microorganisms in relation to synthesis of a new macroergic compound].

Sublethal concentration of the antiseptic composition Desoxon-1 was shown to provoke in cells of Corinebacterium ammoniagenes in a liquid medium the biosynthesis and accumulation of a novel macroergic 2-methylbutane-1,2,3,4-tetraol-2,4-cyclopyrophosphate. This substance is also synthesized when C. ammoniagenes is cultivated in a solid agar medium supplemented with benzylviologen.

Bacteria and pesticides: a new aspect of interaction--involvement of a new biofactor.

Positively charged hydrophobic pesticides of the dipyridyl family [diquat, paraquat, benzylviologen (BV++), etc.] were shown to provoke accumulation of 2-methylbutane-1,2,3,4-tetraol-2,4- cyclopyrophosphate in the cells Corynebacterium (Brevibacterium) ammoniagenes while neutral dipyridyls were not. Hydrophobicity was also an important factor in this phenomenon.