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  1. Article

    Open Access

    The Photoprotective Behavior of a Motile Benthic Diatom as Elucidated from the Interplay Between Cell Motility and Physiological Responses to a Light Microgradient Using a Novel Experimental Setup

    It has long been hypothesized that benthic motile pennate diatoms use phototaxis to optimize photosynthesis and minimize photoinhibitory damage by adjusting their position within vertical light gradients in co...

    Jérôme Morelle, Alexandra Bastos, Silja Frankenbach, Jörg C. Frommlet… in Microbial Ecology (2024)

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  2. No Access

    Article

    Decoupling light harvesting, electron transport and carbon fixation during prolonged darkness supports rapid recovery upon re-illumination in the Arctic diatom Chaetoceros neogracilis

    During winter in the Arctic marine ecosystem, diatoms have to survive long periods of darkness caused by low sun elevations and the presence of sea ice covered by snow. To better understand how diatoms survive...

    Thomas Lacour, Philippe-Israël Morin, Théo Sciandra, Natalie Donaher… in Polar Biology (2019)

  3. No Access

    Article

    Under high light stress two Indo-Pacific coral species display differential photodamage and photorepair dynamics

    The in hospite Symbiodinium symbiont of corals on shallow reefs relies on photoprotection and photorepair during periods of exposure to short-term high light and/or temperature stress. A coral’s susceptibility to...

    Verena Schrameyer, Wiebke Krämer, Ross Hill, Jennifer Jeans… in Marine Biology (2016)

  4. No Access

    Article

    Flux capacities and acclimation costs in Trichodesmium from the Gulf of Mexico

    Phytoplankton function and acclimation are driven by catalytic protein complexes that mediate key physiological transformations, including generation of photosynthetic ATP and reductant, and carbon and nitroge...

    Christopher M. Brown, James D. MacKinnon, Amanda M. Cockshutt… in Marine Biology (2008)

  5. No Access

    Article

    Ultraviolet-B effects on photosystem II efficiency of natural phytoplankton communities from Antarctica

    The impact of UVB on the Antarctic phytoplankton photosystem II repair cycle, involving the rapidly cycled D1 protein, was studied during summer 2002. On sunny and overcast days, phytoplankton (from 1-m depth)...

    Josée Nina Bouchard, Suzanne Roy, Gustavo Ferreyra, Douglas A. Campbell… in Polar Biology (2005)

  6. No Access

    Article

    Large reallocations of carbon, nitrogen, and photosynthetic reductant among phycobilisomes, photosystems, and Rubisco during light acclimation in Synechococcus elongatus strain PCC7942 are constrained in cells under low environmental inorganic carbon

    Synechococcus elongatus strain PCC7942 cells were grown in high or low environmental concentrations of inorganic C (high-Ci, low-Ci) and subjected to a light shift from 50 µmol m−2 s−1 to 500 µmol m−2 s−1. We qua...

    Tyler D.B. MacKenzie, Jeanette M. Johnson, Amanda M. Cockshutt… in Archives of Microbiology (2005)

  7. No Access

    Article

    Chlorosis during nitrogen starvation is altered by carbon dioxide and temperature status and is mediated by the ClpP1 protease in Synechococcus elongatus

    The interactive effects of inorganic carbon status, temperature and light on chlorosis induced by nitrogen deficiency, and the roles of Clp proteases in this process were investigated. In wild-type cultures gr...

    Kara Barker-Åström, Jenny Schelin, Petter Gustafsson… in Archives of Microbiology (2005)

  8. No Access

    Article

    Coincident chromosomal disomy in meiotic dyads from triploid yeast

    Among meiotic asci produced by triploid (3N) Saccharomyces cerevisiae are cases in which exactly two of the four ascospores proliferate into colonies. Given the unique asymmetry problems inherent in distributing ...

    Douglas A. Campbell, Mark M. Doolittle in Current Genetics (1987)