Results 91 to 100 of about 2,612 (190)
Effect of glutamine on growth and heterocyst differentiation in the cyanobacterium Anabaena variabilis [PDF]
Journal of Bacteriology, 1986 Mutants of the cyanobacterium Anabaena variabilis that were capable of increased uptake of glutamine, as compared with that in the parental strains, were isolated. Growth of these mutants and their parental strains was measured in media containing N2, ammonia, or glutamine as a source of nitrogen.
T, Thiel, M, Leone
openaire +2 more sources
A Biosynthetic and Taxonomic Atlas of the Global Lichen Holobiont
Environmental Microbiology, Volume 27, Issue 6, June 2025.This analysis of 794 publicly available lichen shotgun metagenomic datasets, covering 467 unique lichen species from 34 countries, revealed that lichens are complex holobionts. They harbour a variety of fungal, algal, and bacterial players with remarkable biosynthetic capabilities.
Samantha C. Waterworth +4 more
wiley +1 more source
Environmental DNA, 2020 Epiphytes face several constraints regarding nutrient acquisition: They are disconnected from soil minerals and they have to mainly rely on nutrients leached by precipitation and microbes.
Philip Bell‐Doyon +3 more
doaj +1 more source
Expanding the Direct HetR Regulon in Anabaena sp. Strain PCC 7120 [PDF]
, 2013 In response to a lack of environmental combined nitrogen, the filamentous cyanobacterium Anabaena sp. strain PCC 7120 differentiates nitrogen-fixing heterocyst cells in a periodic pattern. HetR is a transcription factor that coordinates the regulation of
Callahan, Sean M. +7 more
core +2 more sources
Environmental Microbiology Reports, Volume 17, Issue 3, June 2025.The potentially toxigenic cyanobacterium Raphidiopsis raciborskii has spread to temperate regions and produces massive blooms. This study reports the first taxonomic and functional metagenomic assessment of a strain from the Mediterranean, thus filling a significant gap in global distribution.
Nico Salmaso +4 more
wiley +1 more source
The trpE Gene Negatively Regulates Differentiation of Heterocysts at the Level of Induction in Anabaena sp. Strain PCC 7120 [PDF]
, 2014 Levels of 2-oxoglutarate (2-OG) reflect nitrogen status in many bacteria. In heterocystous cyanobacteria, a spike in the 2-OG level occurs shortly after the removal of combined nitrogen from cultures and is an integral part of the induction of heterocyst
Burger, Andrew H. +7 more
core +1 more source
The Barrier Properties of Biological Membranes Dictate How Cells Experience Oxidative Stress
Molecular Microbiology, Volume 123, Issue 5, Page 454-463, May 2025.Molecular oxygen diffuses across membranes with such speed that, despite respiration, the intracellular oxygen concentration does not differ significantly from that outside the cell. In contrast, membranes are important barriers for hydrogen peroxide and especially superoxide, so that intracellular scavenging enzymes can substantially shield cells from
James A. Imlay
wiley +1 more source
Intercellular Diffusion of a Fluorescent Sucrose Analog via the Septal Junctions in a Filamentous Cyanobacterium [PDF]
, 2015 D.J.N. was supported by a Queen Mary University of London College studentship. M.N.M. was the recipient of an FPU (Formación del Personal Universitario) fellowship from the Spanish Government.
Bornikoel, J +8 more
core +4 more sources
Physiologia Plantarum, Volume 177, Issue 3, May/June 2025.Abstract In the filamentous cyanobacterium Anabaena sp. PCC 7120, heterocyst formation is triggered by changes in the C/N‐ratio and relies on transcriptional reprogramming. The transcription factor PacR is considered a global regulator of carbon assimilation under photoautotrophic conditions, influencing the carbon concentrating mechanism and ...
Elisa Werner +6 more
wiley +1 more source