Results 61 to 70 of about 1,371 (189)

Adaptive Responses of Cyanobacteria to Phosphate Limitation: A Focus on Marine Diazotrophs

Environmental Microbiology, Volume 26, Issue 12, December 2024.
Marine diazotrophic cyanobacteria, which are essential for atmospheric nitrogen fixation in low‐nutrient oceans, have developed various strategies to survive under phosphate (Pi) limitation by using high‐affinity transporters and enzymes that break down dissolved organic phosphorus (DOP).
Chloé Caille, Solange Duhamel, Amel Latifi, Sophie Rabouille   +3 more
wiley   +1 more source

Polyphosphate phosphorus in the Great Lakes

Limnology and Oceanography Letters, Volume 9, Issue 5, Page 602-611, October 2024.
Abstract Polyphosphate (polyP) is important to phytoplankton ecology, but a unified view of its variability and roles in ecosystem‐scale phosphorus (P) cycling is lacking. We study polyP in the world's largest freshwater ecosystem, the Laurentian Great Lakes, covering pelagic to nearshore areas across a wide nutrient gradient.
Xingyu Yang, Rixuan Gao, Audrey Huff, Sergei Katsev, Ted Ozersky, Jiying Li   +5 more
wiley   +1 more source

Diversity and toxin content of cyanobacteria in fish ponds (South Moravia, Czech Republic) related to fishery management intensity

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008
During the vegetative period of the year 2005 (June–October) we carried out hydrobiological and hydrochemical monitoring of selected ponds inhered in Southern Moravia in relation to different fi­she­ry management intensities. Water temperature, dissolved
Radovan Kopp, Andrea Ziková, Jan Mareš, Stanislav Navrátil, Ondřej Adamovský, Miroslava Palíková   +5 more
doaj   +1 more source

Colony‐forming and single‐cell picocyanobacteria nitrogen acquisition strategies and carbon fixation in the brackish Baltic Sea

Limnology and Oceanography, Volume 69, Issue 9, Page 1955-1969, September 2024.
Abstract Picocyanobacteria are widespread and globally significant primary producers. In brackish waters, picocyanobacterial populations are composed of diverse species with both single‐cell and colony‐forming lifestyles. Compared to their marine counterparts, brackish picocyanobacteria are less well characterized and the focus of research has been ...
Christien P. Laber, Javier Alegria Zufia, Catherine Legrand, Elin Lindehoff, Hanna Farnelid   +4 more
wiley   +1 more source

Relationship between non-protein and total nitrogen in the cyanobacterium Aphanothece microscopica Nägeli [PDF]

, 2006
A Aphanothece microscopica Nägeli é uma cianobactéria que vem sendo estudada no sentido de associar o tratamento de efluente com a produção de proteína unicelular.
Goldbeck, Rosana, Jacques, Andressa Carolina, Silva, Adriana Gonçalves da, Cogo, Sarah Lemos, Queiroz, Maria Isabel, Mitterer, Marina Leite   +5 more
core  

Extraction of novel sulfated polysaccharides from Aphanothece sacrum (Sur.) Okada, and its spectroscopic characterization [PDF]

, 2007
We extracted polysaccharides (PS) from Aphanothece sacrum using a hot alkaline solution which degraded other biopolymers such as proteins and nucleotides. The spectroscopy and elemental analyses indicated the PS contain carboxyls and sulfate groups.
Okajima-Kaneko, Maiko, Ono, Masateru, Kaneko, Tatsuo, Kabata, Kiyotaka   +3 more
core   +1 more source

[Preventive Effects of Aphanothece sacrum on Diabetic Cataracts].

Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 2019
Approximately 20% of diabetic patients develop diabetic cataracts. As lens proteins are known to be only slightly metabolized during the lifetime, cataracts are difficult to recover from once they have progressed. Therefore, the daily intake of natural compounds would be an important strategy for the prevention of diabetic cataracts. Aphanothece sacrum
Hikari, Sugawa, Shiori, Matsuda, Jun-Ichi, Shirakawa, Kiyotaka, Kabata, Ryoji, Nagai   +4 more
openaire   +1 more source

Bacterial community and cyanotoxin gene distribution of the Winam Gulf, Lake Victoria, Kenya

Environmental Microbiology Reports, Volume 16, Issue 3, June 2024.
This work identified cyanobacterial community and cyanotoxin gene distribution in the Winam Gulf, Lake Victoria, Kenya. Cyanobacterial communities clustered in line with different areas of the Gulf, while cyanotoxin gene concentrations varied between the eastern and western regions.
Katelyn M. Brown, Katelyn B. Barker, Ryan S. Wagner, Christopher S. Ward, Lewis Sitoki, James Njiru, Reuben Omondi, James Achiya, Albert Getabu, R. Michael McKay, George S. Bullerjahn, the NSF‐IRES Lake Victoria Research Consortium   +11 more
wiley   +1 more source

Enhanced single-cell oil production by cold shock in cyanobacterial cultures

Ciência Rural, 2018
: The aim of this research was to evaluate the enhanced single-cell oil production by cold shock in Aphanothece microscopica Nägeli using dairy processing wastewater as culture medium.
Maria Isabel Queiroz, Mariana Manzoni Maroneze, Adriana Gonçalves da Silva Manetti, Juliana Guerra Vieira, Leila Queiroz Zepka, Eduardo Jacob-Lopes   +5 more
doaj   +1 more source

Crocosphaera watsonii – A widespread nitrogen‐fixing unicellular marine cyanobacterium

Journal of Phycology, Volume 60, Issue 3, Page 604-620, June 2024.
Abstract Crocosphaera watsonii is a unicellular N2‐fixing (diazotrophic) cyanobacterium observed in tropical and subtropical oligotrophic oceans. As a diazotroph, it can be a source of bioavailable nitrogen (N) to the microbial community in N‐limited environments, and this may fuel primary production in the regions where it occurs.
Takako Masuda, Jan Mareš, Takuhei Shiozaki, Keisuke Inomura, Amane Fujiwara, Ondřej Prášil   +5 more
wiley   +1 more source