A group of ocean bacteria long considered perfectly adapted to life in nutrient-poor waters may be more vulnerable to environmental change than scientists realized. The bacteria, known as SAR11, dominate surface seawater worldwide and can make up as much as 40% of marine bacterial cells.
Researchers have shown that extended nutrient deprivation can significantly increase toxin content per cell in the benthic dinoflagellate Prorocentrum lima, even when cell numbers remain relatively stable. Toxin risk may increase quietly under nutrient-poor conditions without obvious bloom expansion.
Biologists have uncovered a new mode of communication inside cells that helps bacterial pathogens learn how to evade drugs. Their findings describe how these mechanisms drive antimicrobial resistance in Listeria monocytogenes, the foodborne bacteria that causes listeriosis.
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An association between oral microbiota and cognitive performance in schizophrenia has been reported by researchers. The study shows that lower oral microbial diversity is associated with poorer cognitive function, with specific predicted microbial metabolic pathways potentially linked to this relationship.
A new study reveals how bacteria in the gut can help determine whether the amino acid asparagine from the diet will feed tumor growth or activate immune cells against the cancer.
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