13 Result(s)
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Article
Douglas A. Campbell
Life Sciences
Biochemistry, general
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Article
Correction to: Arctic Micromonas uses protein pools and non-photochemical quenching to cope with temperature restrictions on Photosystem II protein turnover
In Table 2 of the original publication, all instances of krec in the Parameter and Equation columns should read krecinact.
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Open AccessArctic Micromonas uses protein pools and non-photochemical quenching to cope with temperature restrictions on Photosystem II protein turnover
Micromonas strains of small prasinophyte green algae are found throughout the world’s oceans, exploiting widely different niches. We grew arctic and temperate strains of Micromonas and co...
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Open AccessInteractive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms
Among marine phytoplankton groups, diatoms span the widest range of cell size, with resulting effects upon their nitrogen uptake, photosynthesis and growth responses to light. We grew two strains of marine cen...
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Photosystem II repair in marine diatoms with contrasting photophysiologies
Skeletonema costatum and Phaeodactylum tricornutum are model marine diatoms with differing strategies for non-photochemical dissipation of excess excitation energy within photosystem II (...
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Changes in the Rubisco to photosystem ratio dominates photoacclimation across phytoplankton taxa
When growth irradiance changes, phytoplankton acclimates by changing allocations to cellular components to re-balance their capacity to absorb photons versus their capacity to use the electrons from the oxidat...
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Electron transport kinetics in the diazotrophic cyanobacterium Trichodesmium spp. grown across a range of light levels
The diazotrophic cyanobacterium Trichodesmium is a major contributor to marine nitrogen fixation. We analyzed how light acclimation influences the photophysiological performance of Trichodesmium IMS101 during exp...
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Increased reliance upon photosystem II repair following acclimation to high-light by coral-dinoflagellate symbioses
Changing light environments force photoautotroph cells, including coral symbionts, to acclimate to maintain photosynthesis. Photosystem II (PSII) is subjected to photoinactivation at a rate proportional to the...
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Photosystem II protein clearance and FtsH function in the diatom Thalassiosira pseudonana
All oxygenic photoautotrophs suffer photoinactivation of their Photosystem II complexes, at a rate driven by the instantaneous light level. To maintain photosynthesis, PsbA subunits are proteolytically removed...
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Physiological characterization and light response of the CO2-concentrating mechanism in the filamentous cyanobacterium Leptolyngbya sp. CPCC 696
We studied the interactions of the CO2-concentrating mechanism and variable light in the filamentous cyanobacterium Leptolyngbya sp. CPCC 696 acclimated to low light (15 μmol m−2 s−1 PPFD) and low inorganic carbo...
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Dynamics of Fluxes Through Photosynthetic Complexes in Response to Changing Light and Inorganic Carbon Acclimation in Synechococcus elongatus
Cyanobacteria acclimate to environmental inorganic carbon (Ci) concentrations through re-organisations of photosynthetic function and the induction of carbon concentrating mechanisms (CCMs), which alter and const...
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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...
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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...
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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 ...
