Results 21 to 30 of about 26,292 (190)
Probing single cells of purple sulfur bacteria with Raman spectroscopy: carotenoids and elemental sulfur [PDF]
FEMS Microbiology Letters, 2015 We explored the use of Raman spectroscopy to simultaneously monitor the presence of different biomarkers (carotenoids, elemental sulfur) within single cells of the purple sulfur photosynthetic bacteria Allochromatium vinosum and A. warmingii. Raman microspectrometry using excitation at 532 nm allowed the detection of different carotenoids.
Jan Jehlicka +2 more
exaly +3 more sources
Detection of Purple Sulfur Bacteria in Purple and Non-purple Dairy Wastewaters [PDF]
Journal of Environmental Quality, 2015 The presence of purple bacteria in manure storage lagoons is often associated with reduced odors. In this study, our objectives were to determine the occurrence of purple sulfur bacteria (PSB) in seven dairy wastewater lagoons and to identify possible linkages between wastewater properties and purple blooms.
Dungan, R.S., Leytem, A.B.
openaire +2 more sources
Synthesis of High-Molecular-Weight Polyhydroxyalkanoates by Marine Photosynthetic Purple Bacteria. [PDF]
PLoS ONE, 2016 Polyhydroxyalkanoate (PHA) is a biopolyester/bioplastic that is produced by a variety of microorganisms to store carbon and increase reducing redox potential.
Mieko Higuchi-Takeuchi +3 more
doaj +1 more source
Photosynthetica, 2023 Color-tuning is a critical survival mechanism for photosynthetic organisms. Calcium ions are believed to enhance both spectral tuning and thermostability in obligatory calcium-containing sulfur purple bacteria.
M. RÄTSEP +6 more
doaj +1 more source
Molecular Physiology of Anaerobic Phototrophic Purple and Green Sulfur Bacteria [PDF]
International Journal of Molecular Sciences, 2021 There are two main types of bacterial photosynthesis: oxygenic (cyanobacteria) and anoxygenic (sulfur and non-sulfur phototrophs). Molecular mechanisms of photosynthesis in the phototrophic microorganisms can differ and depend on their location and pigments in the cells.
Kushkevych, Ivan +4 more
openaire +5 more sources
Acetate metabolism in purple non-sulfur bacteria [PDF]
FEMS Microbiology Letters, 1989 The photosynthetic non-sulfur purple bacterium Rhodobacter capsulatus E1F1 can grow on acetate or dl-malate photoheterotrophically under anerobic conditions or chemoheterotrophically in the dark in the presence of dioxygen. Bacterial cells grown under both anaerobic and aerobic conditions exhibited high amounts of the tricarboxylic acid cycle enzymes ...
Rafael Blasco +2 more
openaire +2 more sources
Viruses of sulfur oxidizing phototrophs encode genes for pigment, carbon, and sulfur metabolisms
Communications Earth & Environment, 2023 Viral infections modulate bacterial metabolism and ecology. Here, we investigated the hypothesis that viruses influence the ecology of purple and green sulfur bacteria in anoxic and sulfidic lakes, analogs of euxinic oceans in the geologic past.
Poppy J. Hesketh-Best +6 more
doaj +1 more source
Vertical structure of the bacterial diversity in meromictic Fayetteville Green Lake
MicrobiologyOpen, 2021 The permanently stratified water columns in euxinic meromictic lakes produce niche environments for phototrophic sulfur oxidizers and diverse sulfur metabolisms.
Kaleigh R. Block +3 more
doaj +1 more source
Microbiology Spectrum, 2021 In summer 2019, a large, bright pink microbial mat was visible on top of macroalgal deposits in muddy sediments of an urban beach (Playa do Adro, Vigo).
M. Froján +3 more
doaj +1 more source
Journal of Limnology, 2009 Phototrophic sulfur bacteria in the chemocline of Lake Cadagno, Switzerland, were dominated by purple sulfur bacteria before 1998, but their composition shifted after a presumed disturbance to consist of mainly green sulfur bacteria.
Mauro TONOLLA +4 more
doaj +1 more source