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Peer Reviewed Scientific Research Reports.
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1. Effect of Polyethylenimine, a Cell Permeabiliser, on the Photo-sensitised Destruction of Algae by Methylene Blue and Nuclear Fast Red.
Match Strength: 5.252
The present study reports the effect of a cell permeabiliser, polyethylenimine (PEI) has on the photodynamic effect of Methylene Blue (MB) and Nuclear Fast Red (NFR) in the presence of hydrogen peroxide (H2O2). The photosensitised destruction of the algae Chlorella vulgaris (C. vulgaris) under irradiation with visible light is examined. The photodynamic effect was investigated under aerobic and anaerobic conditions. The presence of a permeabiliser during the photosensitised destruction of C. vulgaris does not enhance the activity of the MB, MB/H2O2 system nor NFR, NFR/H2O2 system under aerobic ... Read More »
» Published in Photochem Photobiol. 2006 May 1;
2. The effect of irradiance, vertical mixing and temperature on spring phytoplankton dynamics under climate change: long-term observations and model analysis.
Match Strength: 5.030
Spring algal development in deep temperate lakes is thought to be strongly influenced by surface irradiance, vertical mixing and temperature, all of which are expected to be altered by climate change. Based on long-term data from Lake Constance, we investigated the individual and combined effects of these variables on algal dynamics using descriptive statistics, multiple regression models and a process-oriented dynamic simulation model. The latter considered edible and less-edible algae and was forced by observed or anticipated irradiance, temperature and vertical mixing intensity. ... Read More »
» Published in Oecologia. 2007 Jan;150(4):625-42. Epub 2006 Sep 15.
3. Translation regulation of intron-containing genes in chloroplasts.
Match Strength: 4.350
The paper provides a short description of the originally developed algorithm for searching of the conservative protein-RNA binding sites. The algorithm is applied to analyze chloroplast genes. The candidate protein-RNA binding sites were detected upstream of atpF, petB, clpP, psaA, psbA, and psbB genes in many chloroplasts of algae and plants. We suggest that some of these sites are involved in suppressing translation until splicing is completed. Publication Types: Research Support, Non-U.S. Gov ... Read More »
» Published in J Bioinform Comput Biol. 2006 Aug;4(4):783-92.
4. The multitalented microbial sensory rhodopsins.
Match Strength: 3.614
Sensory rhodopsins are photoactive, membrane-embedded seven-transmembrane helix receptors that use retinal as a chromophore. They are widespread in the microbial world in each of the three domains of life: Archaea, Bacteria and Eukarya. A striking characteristic of these photoreceptors is their different modes of signaling in different organisms, including interaction with other membrane proteins, interaction with cytoplasmic transducers and light-controlled Ca(2+) channel activity. More than two decades since the discovery of the first sensory rhodopsins in the archaeon Halobacterium ... Read More »
» Published in Trends Microbiol. 2006 Nov;14(11):480-7. Epub 2006 Sep 26.
5. Optimal growth of Dunaliella primolecta in axenic conditions to assay herbicides.
Match Strength: 2.841
To develop an assay for herbicides in marine environments using microalgae, we have optimized the specie, cell culture media and physical conditions to obtain maximal cellular densities in a 96 well micro format to allow mass assays. We first surveyed several species of 7 unicellular eukaryotic algae genera (Dunaliella, Tetraselmis, Chlorella, Ellipsoidon, Isochrysis, Nannochloropsis, and Phaeodactylum) for vigorous in vitro axenic growth. Once the genus Dunaliella was selected, Dunaliella primolecta was preferred among 9 species (bioculata, minuta, parva, peircei, polymorpha, primolecta, ... Read More »
» Published in Chemosphere. 2007 Jan;66(7):1315-22. Epub 2006 Sep 18.
6. Tissue type matters: selective herbivory on different life history stages of an isomorphic alga.
Match Strength: 2.703
Selective grazing by herbivores can have large effects on the population dynamics and community structure of primary producers. However, the ecological impacts of within-species herbivore preference for tissues of different phases (e.g., ploidy levels) or reproductive status remain relatively poorly known, especially among algae and other species with free-living haploid (gametophyte) and diploid (sporophyte) phases. We tested for herbivore selectivity among tissue types of the isomorphic (identical haploid and diploid free-living stages) red alga Mazzaella flaccida. Laboratory feeding assays ... Read More »
» Published in Ecology. 2006 Sep;87(9):2255-63.
7. Fit-for-purpose shellfish reference materials for internal and external quality control in the analysis of phycotoxins.
Match Strength: 2.572
The need for reference materials for quality control of analysis of foodstuffs has been stressed frequently. This has been particularly true in the phycotoxins field, where there is a great shortage of both pure calibration standards and reference materials. Worldwide there are very few independent bodies that produce certified reference materials for phycotoxins, the main producers currently being the National Research Council Canada and the Japanese Food Research Laboratory. Limited availability of contaminated shellfish and algae, as well as the time and knowledge necessary for the ... Read More »
» Published in Anal Bioanal Chem. 2006 Sep 27;
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