Curtobacterium flaccumfaciens Archives

Directed evolution of UVCR tolerance in strain DSM 20129. A) Schematic depiction of the directed evolution method used to improve UVCR tolerance in strain DSM 20129. The details of the procedure are descried in the text. B) UVCR tolerance of DSM 20129 after each round of UVCR exposure as compared to isolate L6-1, measured as the number of surviving CFUs (N) at each UVCR dose divided by total number of CFUs in the unexposed control (N0 ). Data shown are the average of three independent replicates. Error bars represent SEM. C) Summary of the mutations acquired during the directed evolution process. Mutation type (smaller pie chart) refers only to the mutations occurring in coding sequences (green slice in larger pie chart). Gene3 Ontology (GO) function annotations were determined for proteins that acquired amino acid point mutations in their coding sequence (blue slice in smaller pie chart). -- biorxiv.org

Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Radiation, Status Report

Extreme UVC Radiation Tolerance In Bacteria Recovered From Earth’s Stratosphere

by Keith CowingApril 2, 2023June 14, 2026

Aerosolized microbes surviving transport to and in the stratosphere endure extremes of low temperature, atmospheric pressure, and relative humidity, and high shortwave ultraviolet radiation flux. However, the genetic determinants for […]

Curtobacterium flaccumfaciens

Extreme UVC Radiation Tolerance In Bacteria Recovered From Earth’s Stratosphere

Planetary Protection Directive From NASA Administrator Isaacman

An Earth-like Planet With Two Suns?

Uncatalyzed Guanosine Phosphorylation under Potentially Prebiotic Conditions

Ammonia And An Unexpected Chill Discovered On Distant Giant Planet HATS-6 b

NASA Spaceline Current Awareness List #1,218 25 September 2026 (Space Life Science Research Results)