A new broad-spectrum protease inhibitor from the entomopathogenic bacterium Photorhabdus luminescens

Article Abstract:

Research has been conducted on Photorhabdus luminescens, an entomopathogenic bacterium associated with insect-nematode Heteroohabditis bacteriophora. The authors demonstrate that both primary- and secondary-phase bacteria synthesize protease, and that in the secondary-phase bacteria protease activity is suppressed by protease inhibitor.

United States, Protease inhibitors, Bacteria, Pathogenic, Pathogenic bacteria, Roundworm

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Occurrence of natural dixenic associations between the symbiont Photorhabdus luminescens and bacteria related to Ochrobactrum spp. in tropical entomopathogenic Heterorhabditis spp. (Nematoda, Rhabditida)

Article Abstract:

Researchers have isolated bacteria from nematodes that are similar to Ochrobactrum spp., which are know to be toxic to humans. For this reason, these nematodes may not be suitable as a biological control agent for insects.

Symbiosis, Insect pests, Biological insect control

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Continuous monitoring of the cytoplasmic pH in Methanobacterium thermoautotrophicum using the intracellular factor F (sub)420 as indicator

Article Abstract:

Research has been conducted on endogenous factor F (sub)420. The authors report that F (sub)420 has been used as an intrinsic pH indicator in Methanobacterium thermoautotrophicum.

Switzerland, Genetic aspects, Methanobacteriaceae, Methanogens, Hydrogen-ion concentration, Cytoplasm

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