Researchers conduct first-ever study to characterize microbiota in saliva of weaned piglets

Bacteria of the phyla Firmicutes and Proteobacteria, including those of the genus Streptococcus, are the most common microorganisms found in the saliva of swine, which contains a different microbiota from swine feces and the environment in which the animals live.

Phys.org

Hidden #biosphere discovered beneath world's driest hot desert
https://phys.org/news/2024-04-hidden-biosphere-beneath-world-driest.html

Persistent #microbial communities in #hyperarid #subsurface habitats of the #Atacama Desert https://academic.oup.com/pnasnexus/article/3/4/pgae123/7646996

"In the upper 80 cm of playa sediments, microbial communities were dominated by #Firmicutes. Below 200 cm, a different microbial community was discovered, dominated by #Actinobacteria... this community might have colonized the soil 19,000 years ago, before being buried by playa deposits"

Hidden biosphere discovered beneath world's driest hot desert

In a finding with implications for the search for extraterrestrial life, researchers have discovered microbial life 13 feet below Earth's most inhospitable desert. The research is published in the journal PNAS Nexus.

Phys.org
Hidden biosphere discovered beneath world's driest hot desert

In a finding with implications for the search for extraterrestrial life, researchers have discovered microbial life 13 feet below Earth's most inhospitable desert. The research is published in the journal PNAS Nexus.

Phys.org

"Here we used biochemical analyses and comparative genomics to identify BilR as a gut-microbiota-derived bilirubin reductase that reduces #bilirubin to #urobilinogen. We delineated the BilR sequences from similar reductases through the identification of key residues critical for bilirubin reduction and found that BilR is predominantly encoded by #Firmicutes species."

https://www.nature.com/articles/s41564-023-01549-x

BilR is a gut microbial enzyme that reduces bilirubin to urobilinogen - Nature Microbiology

BilR is identified as a bilirubin reductase encoded by gut bacteria, which reduces bilirubin to urobilinogen.

Nature

Large-Scale Identification of Known and Novel RRNPP Quorum-Sensing Systems by RRNPP_Detector Captures Novel Features of Bacterial, Plasmidic, and Viral Coevolution

-in @MolBioEvol by Charles Bernard et al from Eric Bapteste

#Firmicutes #Bacillota #Rap

https://academic.oup.com/mbe/article/40/4/msad062/7079777

Large-Scale Identification of Known and Novel RRNPP Quorum-Sensing Systems by RRNPP_Detector Captures Novel Features of Bacterial, Plasmidic, and Viral Coevolution

Abstract. Gram-positive Firmicutes bacteria and their mobile genetic elements (plasmids and bacteriophages) encode peptide-based quorum-sensing systems (QSSs) t

OUP Academic