• Publications
  • Influence
Physiology and Phylogeny of Green Sulfur Bacteria Forming a Monospecific Phototrophic Assemblage at a Depth of 100 Meters in the Black Sea
TLDR
The stable population of green sulfur bacteria in the Black Sea chemocline represents the most extremely low-light-adapted and slowest-growing type of phototroph known to date. Expand
Selective enrichment and characterization of Roseospirillum parvum, gen. nov. and sp. nov., a new purple nonsulfur bacterium with unusual light absorption properties
TLDR
Because of the large phylogenetic distance to known phototrophic species of the α-Proteobacteria and of its unique absorption spectrum, strain 930I is described as a new genus and species, Roseospirillum parvum gen. and sp. Expand
Overlapping alternative sigma factor regulons in the response to singlet oxygen in Rhodobacter sphaeroides.
TLDR
This work shows that the alternative sigma factors RpoH(I) and RPoH(II) are both involved in the (1)O(2) response and in the heat stress response in Rhodobacter sphaeroides, and identifies small RNAs which depend on R poH( I) andRpoH (II) and are likely to contribute to the defense against photooxidative stress and heat stress. Expand
Chlorobium chlorochromatii sp. nov., a symbiotic green sulfur bacterium isolated from the phototrophic consortium “Chlorochromatium aggregatum”
TLDR
The novel isolate of a symbiotic green sulfur bacterium, strain CaD, was isolated from an enrichment culture of the phototrophic consortium “Chlorochromatium aggregatum” and is described as a novel species within the genus Chlorobium, Ch chlorobium chlorochrom atii. Expand
Photooxidative stress‐induced and abundant small RNAs in Rhodobacter sphaeroides
TLDR
The genome‐wide search for small RNAs (sRNAs) involved in the regulatory response to 1O2 is reported and the discovery that abundant sRNAs are affected by 1O1 exposure extends the knowledge on the role of s RNAs and Hfq in the Regulatory response to oxidative stress. Expand
Singlet oxygen stress in microorganisms.
TLDR
A complex network of different regulatory components controls the defense against photooxidative stress in anoxygenic photosynthetic bacteria, particularly for the phototrophic alpha-proteobacterium Rhodobacter sphaeroides. Expand
Protein synthesis patterns reveal a complex regulatory response to singlet oxygen in Rhodobacter.
TLDR
Analysis of mutant strains support that the response to 1O2 is regulated mainly by rpoE (sigma E), but also a modulation of the sigma E dependent response by other factors and the existence of s Sigma E independent responses. Expand
Characterization and In Situ Carbon Metabolism of Phototrophic Consortia
TLDR
Analysis of photosynthetic pigments by high-performance liquid chromatography revealed the presence of high concentrations of bacteriochlorophyll (BChl) e and smaller amounts of BChl a and d and chlorophyll a in the chemocline, indicating that the mode of growth of the green sulfur bacterial epibionts of “P. roseum” in situ is photoautotrophic. Expand
Anoxygenic photosynthesis and photooxidative stress: a particular challenge for Roseobacter.
TLDR
It is reported that Roseobacter denitrificans showed higher sensitivity to¹O₂ compared with Rhb. Expand
DegS and RseP Homologous Proteases Are Involved in Singlet Oxygen Dependent Activation of RpoE in Rhodobacter sphaeroides
TLDR
It is shown that both R SP_1090 and RSP_1091 are required for full resistance towards 1O2, and it is revealed that the DegS and RseP homologs RSP-3242 and R SP-2710 contribute to 1O1 resistance and promote ChrR proteolysis. Expand
...
1
2
3
4
...