In some
#bacteria,
#MutationRate depends on environmental factors (e.g. pop'n density). Why? @RowanCallumGre1 @Rok_Krasovec @knightjjar &co show that denser microbial populations detox their environment more efficiently, reducing mutation rate
#PLOSBiology https://plos.io/3S8qQXy
Collective peroxide detoxification determines microbial mutation rate plasticity in E. coli
In some bacteria, mutation rates depend on environmental factors such as population density. This study uses simulation-guided experiments to show that denser microbial populations detoxify their environment more efficiently, resulting in a reduced rate of mutation.
Genomic stability: A double-edged sword for sharks https://phys.org/news/2023-10-genomic-stability-double-edged-sword-sharks.html
Low mutation rate in #EpauletteSharks is consistent with a slow rate of #evolution in #sharks: Ashley Sendell-Price et al. https://www.nature.com/articles/s41467-023-42238-x
"With an estimated #MutationRate of 7×10-10 per base pair per generation, they have the lowest mutation rate yet recorded in #vertebrates. It is ten to twenty times lower than in #mammals."
Genomic stability: A double-edged sword for sharks
Sharks have been populating the oceans for about 400 to 500 million years. While our planet and many of its inhabitants have undergone massive changes several times during this period, this basal group of vertebrates has remained somewhat constant. Their body shape and biology has hardly changed since then.
Ever wondered what mutation rates might be like for marine invertebrates? #preprint led by Iva Popovic provides the first de novo #mutationrate estimate for a #marineinvertebrate ... spoiler alert, it's pretty high.
https://www.biorxiv.org/content/10.1101/2023.06.28.546961v1
PLOS Biology
Lukas VFN 🇪🇺
Cynthia Riginos
Peer Community In