Results 31 to 40 of about 1,204,088 (297)

Phototropic sulfur and sulfate-reducing bacteria in the chemocline of meromictic Lake Cadagno, Switzerland

Journal of Limnology, 2004
Lake Cadagno, a crenogenic meromictic lake located in the catchment area of a dolomite vein rich in gypsum in the Piora Valley in the southern Alps of Switzerland, is characterized by a compact chemocline with high concentrations of sulfate, steep ...
Raffaele PEDUZZI, Dittmar HAHN, Antonella DEMARTA, Sandro PEDUZZI, Mauro TONOLLA   +4 more
doaj   +1 more source

Autotrophic sulfide removal by mixed culture purple phototrophic bacteria

, 2020
Current H2S treatment methods for sour gases require considerable amounts of chemicals and energy, or in case of biological treatment, unwanted diluents such as oxygen or nitrogen may be introduced. In order to reduce those requirements, the viability of
Batstone, Damien J., Egger, Felix, Hülsen, Tim, Tait, Stephan   +3 more
core   +1 more source

Photosynthesis Is Widely Distributed among Proteobacteria as Demonstrated by the Phylogeny of PufLM Reaction Center Proteins

Frontiers in Microbiology, 2018
Two different photosystems for performing bacteriochlorophyll-mediated photosynthetic energy conversion are employed in different bacterial phyla. Those bacteria employing a photosystem II type of photosynthetic apparatus include the phototrophic purple ...
Johannes F. Imhoff, Tanja Rahn, Sven Künzel, Sven C. Neulinger   +3 more
doaj   +1 more source

Purple bacteria photo-bioelectrochemistry: Enthralling challenges and opportunities

, 2020
Purple non-sulfur bacteria are anoxygenic photosynthetic microorganisms characterized by an extremely versatile metabolism, allowing them to grow in a broad variety of conditions as well as in the presence of different contaminants.
Grattieri M.
core   +1 more source

Effects of nitrogen fertilizers on the bacterial community diversity and the weathering of purple mudstone in Southwest China

Frontiers in Microbiology, 2023
IntroductionRock weathering is crucial in the development of soil. Yet the role of bacteria in the fine particle-forming process of purple mudstone is not fully understood, especially under nitrogen fertilization.MethodsIn this study, the particles (0.25 
Chunpei Li, Maopan Fan, Xuan Wang, Xuan Wang, Xue Li, Guang Zhao, Gangcai Liu, Jixia Zhao   +7 more
doaj   +1 more source

The mighty power of purple bacteria

, 2023
The mighty power of purple ...
Labarile, Rossella, Vona, Danilo, Buscemi, Gabriella, Altamura, Emiliano, Mandriota, Giacomo, Grattieri, Matteo, Varsalona, Maria, Milano, Francesco, Mavelli, Fabio, Stufano, Paolo, Trotta, Massimo   +10 more
openaire   +2 more sources

How purple photosynthetic bacteria harvest solar energy [PDF]

, 2006
This short review provides a concise summary of the current status of research aimed at understanding the structure and function of purple bacterial antenna complexes.
Andrew Gall, Neil W. Isaacs, Isaacs, N.W., Roszak, A.W., Gardiner, A.T., Southall, J., Cogdell, R.J., Alastair T. Gardiner, Christopher J. Law, Law, C.J., Gall, A., Richard J. Codgell, June Southall, Aleksander W. Roszak   +13 more
core   +1 more source

Purple urine bag syndrome in an elderly patient from Colombia

Journal of Infection in Developing Countries, 2015
A 71-year-old woman in a nursing home, with indwelling urinary catheter, bedridden, presented with a purple urine collector bag. The purple urine bag syndrome is a rare condition associated with the metabolism of tryptophan by overgrowth of intestinal ...
Alvaro Mondragón-Cardona, Carlos Eduardo Jiménez-Canizales, Verónica Alzate-Carvajal, Fabricio Bastidas-Rivera, Juan Carlos Sepúlveda-Arias   +4 more
doaj   +1 more source

Photosynthetic activity and population dynamics of Amoebobacter purpureus in a meromictic saline lake [PDF]

, 1994
A dense population of the purple sulfur bacterium Amoebobacter purpureus in the chemocline of meromictic Mahoney Lake (British Columbia, Canada) underwent consistent changes in biomass over a two year study period.
Hall, K. J., Beatty, J. T., Overmann, Jörg, J Overmann   +3 more
core   +1 more source

Metabolite Profiling Analysis and the Correlation with Biological Activity of Betalain-Rich Portulaca grandiflora Hook. Extracts

Antioxidants, 2022
The aim of the study was to evaluate the possible correlation between the bioactivity and the phytochemical profile of four betalain-rich extracts from Portulaca grandiflora Hook. The HPLC-DAD-ESI-MS analysis indicated the presence of 19 betaxanthins and
Aneta Spórna-Kucab, Anna Tekieli, Agnieszka Grzegorczyk, Łukasz Świątek, Barbara Rajtar, Krystyna Skalicka-Woźniak, Karolina Starzak, Boris Nemzer, Zbigniew Pietrzkowski, Sławomir Wybraniec   +9 more
doaj   +1 more source