Results 61 to 70 of about 39,923 (234)

Influence of Age and Exposure Pathway on Copper and Cadmium Mixture Toxicity: A Study on Daphnia magna

Environmental Toxicology, EarlyView.
ABSTRACT Metal contamination in aquatic ecosystems poses substantial risks to freshwater organisms, with mixture effects often deviating from predictions based on single‐metal toxicity. Understanding how age‐specific sensitivities and multiple exposure pathways influence mixture effects is critical for accurate risk assessment.
Sanah Majid, Karen Smeets, Mubiana K. Valentine, Ronny Blust   +3 more
wiley   +1 more source

The orientation of swimming bi-flagellates in shear flows [PDF]

, 2011
Biflagellated algae swim in mean directions that are governed by their environments. For example, many algae can swim upward on average (gravitaxis) and toward downwelling fluid (gyrotaxis) via a variety of mechanisms.
O'Malley, S., Bees, M.A., Stephen O’Malley, Martin A. Bees   +3 more
core   +1 more source

Photosystem II function under extreme low light and low temperatures; polar vs. temperate phytoplankton

Frontiers in Photobiology
Polar phytoplankton achieve slow, but ecologically significant, productivity under exceptionally low light, where the sequential arrivals of photons at Photosystem II complexes are widely spaced in time.
Mackenzie Poirier, Natasha M. Ryan, Pomona Osmers, Arthur Plassart, Arthur Plassart, Sébastien Guérin, Marcel Babin, Maximilian Berthold, Mireille Savoie, Marina Cvetkovska, Douglas A. Campbell   +10 more
doaj   +1 more source

Co‐Culture of Mammalian Cells and Photosynthetic Microorganisms for Oxygen Supply in Engineered Tissues

Cell Proliferation, EarlyView.
Continuous 28‐day light exposure alters behaviours of articular cartilage progenitor cells (ACPCs) and mesenchymal stromal cells (MSCs). Co‐culture with Leptolyngbya and Synechococcus does not adversely affect the chondrogenic capacity of ACPCs over a 28‐day period, in contrast to co‐culture with Chlorella.
Meng Wang, Ahmad Furqan Hala, Vera van der Niet, Sebastian T. Bok, Aylin Kara Özenler, Marcel Janssen, Maria J. Barbosa, Dirk Martens, Rene H. Wijffels, Jos Malda, Mylène de Ruijter   +10 more
wiley   +1 more source

Glycerol Is an Osmoprotectant in Two Antarctic Chlamydomonas Species From an Ice-Covered Saline Lake and Is Synthesized by an Unusual Bidomain Enzyme

Frontiers in Plant Science, 2020
Glycerol, a compatible solute, has previously been found to act as an osmoprotectant in some marine Chlamydomonas species and several species of Dunaliella from hypersaline ponds.
James A. Raymond, Rachael Morgan-Kiss, Sarah Stahl-Rommel   +2 more
doaj   +1 more source

Structural insights into θ‐type carbonic anhydrases 3 and 4: Tuning the directionality of CO2 hydration in a diatom

The FEBS Journal, EarlyView.
θ‐CA3 from a marine diatom has an N‐terminal transmembrane helix and two homologous catalytic domains. The enzyme functions as a dimer, with active sites formed near the dimer interface. A bicarbonate ion binds on the symmetry axis of the dimer and forms hydrogen bonds with both monomers, thereby activating θ‐CA3 and tuning CO2 hydration activity ...
Hiroto Negoro, Atsuki Ohsawa, Ginga Shimakawa, Hideaki Tanaka, Yusuke Matsuda, Genji Kurisu   +5 more
wiley   +1 more source

Expression and molecular analysis of phbB gene in Chlamydomonas reinhardtii

, 2004
The expression vector containing phbB and ble genes was constructed and transformed into cell-wall-deficient strain Chlamydomonas reinhardtii CC-849 by the glass-head method.
Hu, W, Wang, CG, Hu, ZG, Lei, AP, Hu, ZG, Shenzhen Univ, Coll Life Sci, Shenzhen 518060, Peoples R China   +4 more
core   +1 more source

Cold Stress Response: An Overview in Chlamydomonas

Frontiers in Plant Science, 2020
Low temperature (or cold) is one of the major environmental factors that limit the growth and development of many plants. Various plant species have evolved complex mechanisms to adjust to decreased temperature.
Elena Ermilova
doaj   +1 more source

Uncovering the role of the PPR protein PHOTOSYSTEM ONE BIOGENESIS FACTOR6 in splicing chloroplast group II introns

Journal of Integrative Plant Biology, EarlyView.
The P‐class pentatricopeptide repeat (PPR) protein PHOTOSYSTEM ONE BIOGENESIS FACTOR (PBF6) forms splicing complexes with other known splicing factors to facilitate chloroplast intron splicing. PBF6 cooperates with other PPR splicing factors to promote the splicing of the same intron through forming respective splicing complexes.
Mengyu Li, Mengwei Sun, Jinlian Lv, Mingming Song, Siyu Lu, Aihong Zhang, Congming Lu   +6 more
wiley   +1 more source

Systems biology approaches for chemical engineering [PDF]

, 2011
Biological systems are becoming of central interest also in fields which go beyond science and medicine scopes, such as chemical engineering. In the last decades, some complex biological systems have been considered for large scale chemicals production ...
Gatto, Fancesco
core