Certain process stages and regions in smoked fish processing plants appear to be more susceptible than others to persistent colonisation by Listeria monocytogenes, an FSA in Scotland (FSAS) literature survey has found. These regions include drains, skinning machines, brine injection units and fish slicers.
For many bacteria, scarcity of phosphorus—serious though it may sound—is not insurmountable. True, phosphorus is needed for nucleic acids and phospholipids, but many prokaryotes have found a way to reduce their need of this element for phospholipid synthesis.
Bacteria | When bacteria start building cities, we’re in trouble. The normally free-floating cells can gather in large numbers and secrete a slimy matrix that they live within. These communities are called biofilms, and they grow wherever there is a surface to support them. Hospital catheters are prime real estate, but they’ll settle on everything from plumbing to oil refineries to ship hulls.
The microbial world represents the last truly unexplored frontier in the diversity of life on Earth. New environmental sampling technologies have revealed a wealth of rare microbial species in the soil, ocean, even our own bodies that were effectively cloaked from previous sampling methods by more abundant species. Dubbed the rare biosphere, these microbial species, while individually rare, collectively account for more than 75% of the biomass of some microbial communities, yet little is known about them.
Although Avery, MacLeod, and McCarty showed in 1944 that nucleic acid was both necessary and sufficient for the transfer of bacterial genetic traits, protein was still suspected to be a critical component of viral heredity. Alfred Hershey and Martha Chase showed that this hypothesis was incorrect with a simple experiment involving the use of a food blender.
According to the Scottish Daily Record, a schoolgirl who died of E. coli O157:H7 may have contracted the killer bug while on holiday in America. Rachel Shaw, eight, died at Yorkhill sick children’s hospital in Glasgow after being taken to the doctor suffering from sickness and diarrhea.
In Nicole King’s lab, a bacterium is making a group of tiny cells stick together. That might seem a little humdrum for a group whose members can build electric grids, create snow, and cripple nations. But King’s bacteria should not be overlooked, for they are recapping one of the most important events in the history of life: the move from one cell to many.
Advances in molecular biology could revolutionise the way in which foodborne disease outbreaks are investigated, according to the Food Standards Agency, enabling faster and more accurate identification of the organisms responsible.