2012Daily bursts of biogenic cyanogen bromide (BrCN) control biofilm formation around a marine benthic diatomBart Vanelslander, Carsten Paul, Jan Grueneberg, Emily K. Prince, Jeroen Gillard, Koen Sabbe, Georg Pohnert, Wim Vyverman Proceedings of the National Academy of Sciences, 109, 2412-2417 (2012) doi:10.1073/pnas.1108062109. OPEN ACCESS Diatom Derived Polyunsaturated Aldehydes Do Not Structure the Planktonic Microbial Community in a Mesocosm Study Carsten Paul, Anna Reunamo, Elin Lindehoff, Johanna Bergkvist, Michaela A. Mausz, Henrik Larsson, Hannes Richter, Sten-Åke Wängberg, Piia Leskinen, Ulf Båmstedt and Georg Pohnert Marine Drugs 10, 775-792 (2012) doi:10.3390/md10040775 OPEN ACCESS Metabolomic Assessment of Induced and Activated Chemical Defence in the Invasive Red Alga Gracilaria vermiculophylla. Göran M. Nylund, Florian Weinberger, Martin Rempt, Georg Pohnert PLoS ONE 6(12): e29359. doi:10.1371/journal.pone.0029359 (2012) OPEN ACCESS Conserved and species specific oxylipin pathways in the wound activated chemical defense of the non invasive red alga Gracilaria chilensis and the invasive Gracilaria vermiculophylla Martin Rempt, Florian Weinberger, Katharina Grosser, Georg Pohnert Beilstein Journal of Organic Chemistry 8, 283-289 (2012) How to explore the sometimes unusual Chemistry chemistry of aquatic defence chemicals Georg Pohnert in: Chemical Ecology of Aquatic Systems - edited by Professor Christer Brönmark and Professor Lars-Anders Hansson, Oxford University Press.ISBN 978-0-19-958310-2 (2012) Influence of temperature and elevated carbon dioxide on the production of dimethylsulfoniopropionate and glycine betaine by marine phytoplankton Marine Environmental Research Astrid Spielmeyer, Georg Pohnert Marine Environmental Research, 73, 62-69 (2012) http://dx.doi.org/10.1016/j.bbr.2011.03.031 Seaweeds early development: detrimental effects of desiccation and attenuation by algal extracts. Loretto Contreras-Porcia, Sebastian Callejas, Daniela Thomas, Camille Sordet, Georg Pohnert, Anibal Contreras, Ana Lafuente, Maria R Flores-Molina, Juan A Correa, Planta, 235, 337-48 (2012) Daytime, growth phase and nitrate availability dependent variations of dimethylsulfoniopropionate in batch cultures of the diatom Skeletonema marinoi Spielmeyer Astrid; Pohnert Georg Journal of Experimental Marine Biology and Ecology, 413, 121-130 (2012) 2011OPEN ACCESSThe Relevance of Marine Chemical Ecology to Plankton and Ecosystem Function: An Emerging Field Ianora, Adrianna; Bentley, Matthew G.; Caldwell, Gary S.; Casotti, Raffaella; Cembella, Allan D.; Engstrom-Ost, Jonna; Halsband, Claudia; Sonnenschein, Eva; Legrand, Catherine; Llewellyn, Carole A.; Paldaviciene, Aiste; Pilkaityte, Renata; Pohnert, Georg; Razinkovas, Arturas; Romano, Giovanna; Tillmann, Urban; Vaiciute, Diana MARINE DRUGS, 9 (9):1625-1648; 10.3390/md9091625 (2011) The effect of egg vs. seston quality on hatching success, naupliar metabolism and survival of Calanus finmarchicus in mesocosms dominated by Phaeocystis and diatoms. Koski, M., Yebra, L., Dutz, J., Jόnasdόttir, S.H., Vidoudez, C., Jakobsen, H.H., Pohnert, G., Nejstgaard, J.C. Marine Biology, in press, doi:10.1007/s00227-011-1843-z. A Desulfatation-Oxidation Cascade Activates Coumarin-Based Cross-Linkers in the Wound Reaction of the Giant Unicellular Alga Dasycladus vermicularis Matthew Welling, Cliff Ross, Georg Pohnert Angewandte Chemie International Edition, 50, 7691-7694 (2011) Eine Desulfatierungs-Oxidations-Kaskade aktiviert auf Cumarin basierende Vernetzer in der Wundverschlussreaktion der einzelligen Makroalge Dasycladus vermicularis Matthew Welling, Cliff Ross, Georg Pohnert Angewandte Chemie, 123, 7833-7836 (2011) Strain-related physiological and behavioral effects of Skeletonema marinoi on three common planktonic copepods Roswati Amin, Marja Koski, Ulf Bamstedt, Charles Vidoudez Marine Biology 158: 1965-1980 10.1007/s00227-011-1706-7 (2011). Investigations of the Uptake of Dimethylsulfoniopropionate by Phytoplankton Astrid Spielmeyer, Björn Gebser, Georg Pohnert ChemBioChem, 12, 2276-2279 (2011) DOI: 10.1002/cbic.201100416 Comparative metabolomics of the diatom Skeletonema marinoi in different growth phases Charles Vidoudez, Georg Pohnert Metabolomics DOI: 10.1007/s11306-011-0356-6 A reactive conjugated allene involved in the biosynthesis of volatile oxylipins in the moss Dicranum scoparium Martin Rempt, Bernd Schneider, Georg Pohnert Organic Letters, 13, 3229-3231 (2011), doi:10.1021/ol201114g OPEN ACCESS Interactions of the algicidal bacterium Kordia algicida with diatoms: regulated protease excretion for specific algal lysis Carsten Paul and Georg Pohnert PLOSone 6(6): e21032. doi:10.1371/journal.pone.0021032 (2011) Up-Regulation of Lipoxygenase, Phospholipase, and Oxylipin-Production in the Induced Chemical Defense of the Red Alga Gracilaria chilensis against Epiphytes Florian Weinberger,Ulrich Lion, Ludovic Delage, Bernard Kloareg, Philippe Potin, Jessica Beltrán, Verónica Flores, Sylvain Faugeron, Juan Correa, Georg Pohnert Journal of Chemical Ecology, 37; 677-686 (2011) (DOI 10.1007/s10886-011-9981-9.) Extensive cross disciplinary analysis of biological and chemical control of Calanus finmarchicus reproduction during an aldehyde forming diatom bloom in mesocosms Sigrún H. Jónasdóttir, Jörg Dutz, Marja Koski, Lidia Yebra, Hans Henrik Jakobsen, Charles Vidoudez, Georg Pohnert, Jens C. Nejstgaard Marine Biology, 158, 1943-1963 (2011). Surface-associated fucoxanthin mediates settlement of bacterial epiphytes on the rockweed Fucus vesiculosus Mahasweta Sahaa, Martin Rempt, Katharina Grosser, Georg Pohnert, Florian Weinberger Biofouling, 27, 423-433 (2011). The green alga Dicytosphaeria ocellata and its organic extracts alter natural bacterial biofilm communities Jennifer M. Sneed and Georg Pohnert Biofouling, 27, 423-433 (2011). Dimethylsulfide sources from microalgae: Improvement and application of a derivatization-based method for the determination of dimethylsulfoniopropionate and other zwitterionic osmolytes in phytoplankton Astrid Spielmeyer, Björn Gebser and Georg Pohnert Marine Chemistry, 124, 58-56 (2011), DOI:  doi:10.1016/j.marchem.2010.12.001OPEN ACCESS Dynamics of Dissolved and Particulate Polyunsaturated Aldehydes in Mesocosms Inoculated with Different Densities of the Diatom Skeletonema marinoi. Charles Vidoudez, Jens Christian Nejstgaard, Hans Henrik Jakobsen and Georg Pohnert Marine Drugs 9, 345-358, (2011) How will increased dinoflagellate:diatom ratios affect copepod egg production? - A case study from the Baltic Sea Anu Vehmaa, Peder Larsson, Charles Vidoudez, Georg Pohnert, Marko Reinikainen, Jonna Engström-Öst Journal of Experimenatal Marine Biology and Ecology, 401, 134-140 (2011) doi:10.1016/j.jembe.2011.01.020 The Sesquiterpene Caulerpenyne from Caulerpa spp. is a Lipoxygenase Inhibitor Sevilay Cengiz, Levent Cavas, Kadir Yurdakoc, Georg Pohnert MARINE BIOTECHNOLOGY 13,321-326 (2011) OPEN ACCESS Quantification of dissolved and particulate polyunsaturated aldehydes in the Adriatic Sea Charles Vidoudez, Raffaella Casotti, Mauro Bastianini and Georg Pohnert Marine Drugs, 9, 500-513 (2011). Production and role of volatile halogenated compounds from marine algae The green macroalga Dictyosphaeria ocellata influences the structure of the bacterioplankton community through differential effects on individual bacterial phylotypes 2010Direct quantification of dimethylsulfoniopropionate (DMSP) with hydrophilic interaction liquid chromatography / mass spectrometry Novel acetylenic oxylipins from the moss Dicranum scoparium with antifeeding activity against herbivorous slugs Chemical noise in the silent ocean Levent Cavas, Georg Pohnert In: Seaweeds and their role in globally changing environments (Israel A., Einav R., and Seckbach J.; eds). p. 385-397, (2010). Springer, Dordrecht, The Netherlands. ISBN: 978-90-481-8568-9. Survey of volatile oxylipins and their biosynthetic precursors in bryophytes. Emmanuel Croisier, Martin Rempt, Georg Pohnert. Phytochemistry, 71, 574-580 (2010) doi: 10.1016/J.phytochem.2009.12.004 Growth phase of the diatom Skeletonema marinoi influences the metabolic profile of the cells and the selective feeding of the copepod Calanus spp. Searching for signals in the noise: Metabolomics in chemical ecology. Gametogenesis and Gamete release of Ulva mutabilis and Ulva lactuca (Chlorophyta): Regulatory effects and chemical characterization of the "swarming inhibitor". Defense evolution in the Gracillaceae (Rhodophyta): Substrate regulated oxidation of agar oligosaccarides is more ancient than the oligo-agar activated oxidative burst (with taxonomic corrections). Culture conditions affect fatty acid content along with wound-activated production of polyunsaturated aldehydes in Thalassiosira rotula (Coscinodiscophyceae). 2009Wound healing and chemical defense in siphonous green algae (abstract).
Diatom exudates influence metabolism and cell growth of co-cultured diatom species. Medicinal Natural Products. Book review. Elucidating physiological responses of macroalgae to epiphytism, herbivory, and cell damage - invited lecture. High plasticity in the production of diatom-polyunsaturated aldehydes under nutrient limitation: Physiological and ecological implications. Ribalet, F., Vidoudez, C., Cassin, D., Pohnert, G., Ianora, A., Miralto, A., and Casotti, R. Protist, 160, 444-451, (2009) Fatty acids and oxylipins as semiochemicals 2008No evidence for the induction of brown algal chemical defense by the phytohormones jasmonic acid and methyl jasmonateTheresa Wiesemeier, Karsten Jahn, Georg Pohnert Journal of Chemical Ecology 34, 1523-1531 (2008) Growth phase specific release of polyunsaturated aldehydes by the diatom Skeletonema marinoi Charles Vidoudez, Georg Pohnert Journal of Plankton Research, 30, 1305-1313 (2008) "Good" and "bad" diatoms: development, growth and juvenile mortality of the copepod Temora longicornis on diatom diets Marja Koski, Thomas Wichard, Sigrun H. Jonasdottir Marine Biology, 154, 719-734 (2008) Influence of diatoms on copepod reproduction. II. Uncorrelated effects of diatom-derived alpha,beta,gamma,delta-unsaturated aldehydes and polyunsaturated fatty acids on Calanus helgolandicus in the field Thomas Wichard, Serge A. Poulet, Anne-Laure Boulesteix, Jean Baptiste Ledoux, Benoit Lebreton, Julie Marchetti, Georg Pohnert Progress in Oceanography, 77, 30-44 (2008) Reduction of herbivory through wound-activated protein cross-linking by the invasive macroalga Caulerpa taxifolia Jerrit Weissflog, Sven Adolph, Theresa Wiesemeier, Georg Pohnert ChemBioChem, 9, 29-32 (2008) 2007Influence of algal secondary metabolites on plankton community structure. Influence of diatoms on copepod reproduction. III. Consequences of abnormal oocyte maturation on reproductive factors in Calanus helgolandicus New Frontiers in Chemical Ecology: Conference Report of the 23rd Annual Meetingof the International Society of Chemical Ecology Collapse of Calanus chilensis reproduction in a marine environment with high diatom concentration 2006Phospholipases and Galactolipases Trigger Oxylipin-Mediated Wound-Activated Defence in the Red Alga Gracilaria chilensis against Epiphytes Genetic Engineering Renders Plants Attractive to Bodyguards Die schnelle Wundreaktion einzelliger Algen im Plankton - ein Weg zur Induktion von chemischer Verteidigung? Laureate Lecture "Akademiepreis für Chemie" Influence of diatoms on copepod reproduction. I. Field and laboratory observations related to Calanus helgolandicus egg production Biosynthesis of C9-aldehydes in the moss Physcomitrella patens Formation of halogenated medium chain hydrocarbons by a lipoxygenase/hydroperoxide halolyase-mediated transformation in planktonic microalgae 2005Wound closure in the invasive green alga Caulerpa taxifolia by enzymatic activation of a protein cross-linker Life-history responses of Daphnia pulicaria to diets containing freshwater diatoms: Effects of nutritional quality versus polyunsaturated aldehydes Lipoxygenase-mediated metabolism of storage lipids in germinating sunflower cotyledons and b-oxidation of (9Z,11E,13S)-13-hydroxy-octadeca-9,11-dienoic acid by the cotyledonary glyoxysomes Winter-spring phytoplankton blooms in Dabob Bay, Washington Colloquium on diatom-copepod interactions Diatom/copepod interactions in plankton: The indirect chemical defense of unicellular algae Wound closure through biopolymerization A Multifunctional Lipoxygenase with Fatty Acid Hydroperoxide Cleaving Activity from the Moss Physcomitrella patens Apoplastic oxidation of L-asparagine is involved in the control of the green algal endophyte Acrochaete operculata Correa & Nielsen by the red seaweed Chondrus crispus Stackhouse Survey of the chemical defence potential of diatoms: screening of fifty one species for alpha,beta,gamma,delta-unsaturated aldehydes Determination and quantification of alpha,beta,gamma,delta-unsaturated aldehydes as pentafluorobenzyl-oxime derivates in diatom cultures and natural phytoplankton populations: application in marine field studies Unprecedented lipoxygenase/hydroperoxide lyase pathways in the moss Physcomitrella patens 2004Cytotoxicity of diatom-derived oxylipins in organisms belonging to different phyla Aldehyde suppression of copepod recruitment in blooms of a ubiquitous planktonic diatom Chemical defense strategies of marine organisms Short synthesis of labeled and unlabeled 6Z,9Z,12Z,15-hexadecatetraenoic acid as metabolic probes for biosynthetic studies on diatoms 2003Synthesis and biological activity of a,b,g,d-unsaturated aldehydes from diatoms Macrophomate synthase: The first structure of a natural Diels-Alderase Intracellular compartmentation in the biosynthesis of caulerpenyne: Study on intact macroalgae using stable-isotope-labeled precursors 2002Comparison of the wound-activated transformation of caulerpenyne by invasive and noninvasive Caulerpa species of the Mediterranean Phospholipase A2 activity triggers the wound-activated chemical defense in the diatom Thalassiosira rotula Biomineralization in diatoms mediated through peptide- and polyamine-assisted condensation of silica Biochemical bases of marine plant-microbe interactions: Novel evidence on the evolution of plant immunity The oxylipin chemistry of attraction and defense in brown algae and diatoms Are volatile unsaturated aldehydes from diatoms the main line of chemical defence against copepods? Biotic interactions of marine algae A signal released by an endophytic attacker acts as a substrate for a rapid defensive reaction of the red alga Chondrus crispus Cloning and functional characterisation of an enzyme involved in the elongation of D6-polyunsaturated fatty acids from the moss Physcomitrella patens 2001Molecular interactions between the specialist herbivore Manduca sexta (Lepidoptera, Sphingidae) and its natural host Nicotiana attenuata. III. Fatty acid-amino acid conjugates in herbivore oral secretions are necessary and sufficient for herbivore-specific plant responses Rapid wound-activated transformation of the green algal defensive metabolite caulerpenyne Diels-Alderases Absolute configuration of volicitin, an elicitor of plant volatile biosynthesis from lepidopteran larvae 2000Wound-activated chemical defense in unicellular planktonic algae Predator specificity of kairomones in diel vertical migration of Daphnia: a chemical approach. Phenyliodine(III) bis(trifluoroacetate) (PIFA) Highly efficient one-pot double-Wittig approach to unsymmetrical (1Z,4Z,7Z)-homoconjugated trienes No ecological relevance of trimethylamine in fish-Daphnia interactions 1999Biosynthesis of dictyopterene A: stereoselectivity of a lipoxygenase/hydroperoxide lyase from Gomphonema parvulum (Bacillariophyceae) S-(-)-Dinitrobiphenic Acid: A Selective Inhibitor of Escherichia coli Chorismate Mutase Based on Prephenate Mimicry Methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD) New fatty acid amides from regurgitant of lepidopteran (Noctuidae, Geometridae) caterpillars Synthesis of volicitin: a novel three-component Wittig approach to chiral 17-hydroxylinolenic acid Regulation of Phenylalanine Biosynthesis. Studies on the Mechanism of Phenylalanine Binding and Feedback Inhibition in the Escherichia coli P-Protein 1998Chorismate mutase-prephenate dehydratase from Escherichia coli. Study of catalytic and regulatory domains using genetically engineered proteins 1997Pericyclic reactions in nature: synthesis and Cope rearrangement of thermolabile bis-alkenylcyclopropanes from female gametes of marine brown algae (Phaeophyceae) 1996Solid-phase microextraction and determination of the absolute configuration of the Laminaria digitata (Laminariales, Phaeophyceae) spermatozoid-releasing pheromone Biosynthesis of the algal pheromone hormosirene by the freshwater diatom Gomphonema parvulum (Bacillariophyceae) 1995Biosynthesis of algae pheromones. 4. Pericyclic reactions in nature: spontaneous Cope rearrangement inactivates algae pheromones Synthesis and absolute configuration of desmarestene, the gamete-releasing and gamete-attracting pheromone of the brown algae Desmarestia aculeata and D. firma (Phaeophyceae) 1994Pericyclic reactions in nature: evidence for a spontaneous [1.7]-hydrogen shift and an 8pe electrocyclic ring closure in the biosynthesis of olefinic hydrocarbons from marine brown algae (Phaeophyceae) Patents2000Preparation of a homoconjugated triene via a sequential non-statistical Wittig reaction |
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