Publications
(* corresponding author)
2024
108. Schultz, C., Zopf, D., Holzinger, A., Silge, A., Meyer-Zedler, T., Schmitt, M., Wichard T.*, Popp, J.* (2024) Raman spectral analysis in the CHx-stretching region as a guiding beacon for non-targeted, disruption-free monitoring of germination and biofilm formation in the green seaweed Ulva. ChemPhysChem 7:e202400173. https://doi.org/10.1002/cphc.202400173External link
107. Hardegen, J., Bräutigam, P., Michael, S., Hüttig, K., Wichard, T.* (2024) Können Mikroschadstoffe entfernt werden? Das Abbauverhalten von Bisphenol A. KA-Betriebs-Info 54:3478-3482. BI_2024_2.pdfExternal link
106. Hmani, I., Ghaderiardakani, F., Ktari, L., El Bour, M., Wichard, T.* (2024) High-temperature stress induces bacteria-specific adverse and reversible effects on Ulva (Chlorophyta) growth and its chemosphere in a reductionist model system. Botanica Marina 67:131–138. https://doi.org/10.1515/bot-2023-0053External link
105. Steinhagen, S.*, Wichard, T., Blomme, J.* (2024) Phylogeny and ecology of the green seaweed Ulva. Botanica Marina 67:89-92. https://doi.org/10.1515/bot-2024-0005External link
104. Wienecke, P., Ulrich, J. F., Morales-Reyes, C. F., Dhiman, S., Wichard, T.*, Arndt, H.-D.* (2024) Enantioselective Total Synthesis of the Morphogen (−)-Thallusin and Mediated Uptake of Fe(III) into the Green Seaweed Ulva. Chemistry European Journal 18:e202304007. https://doi.org/10.1002/chem.202304007 External link Cover FeatureExternal link
103. Volodin, I.A., Wulf, K., Tzschoeckell, F., Stumpf, S., Hoeppener, S., Fritz, N., Morales-Reyes, C.F., Wichard, T., Ueberschaar, N., Stolze, C. and Hager, M.D., Schubert, U. S.* (2024) Evaluation of in situ thermal stability assessment for flow batteries and deeper investigation of the ferrocene co-polymer. Journal of Materials Chemistry A 12:4806-4825. https://doi.org/10.1039/D3TA05809CExternal link
2023
102. Wienecke, P., Ulrich, J., Morales-Reyes, C., Dhiman, S., Wichard, T.*, Arndt, H-D.* Enantioselective Total Synthesis of the Morphogen (‒)-Thallusin and Uptake of its Fe(III) Complex into the Green Seaweed Ulva. ChemRxiv. Cambridge: Cambridge Open Engage; 2023; This content is a preprint and has not been peer-reviewed. 10.26434/chemrxiv-2023-jr19nExternal link
101. Blomme, J., Wichard, T., Jacobs, T. B., De Clerck, O.* (2023) Ulva: An emerging green seaweed model for systems biology. Journal of Phycology 59:433–440. https://doi.org/10.1111/jpy.13341External link
100. Hardegen, J., Amend, G., Wichard, T.* (2023) Lifecycle-dependent toxicity and removal of micropollutants in algal cultures of the green seaweed Ulva (Chlorophyta). Journal of Applied Phycology 35:2031–2048. https://link.springer.com/article/10.1007/s10811-023-02936-xExternal link
99. KleinJan, H., Frioux, C., Califano, G., Aite, M., Fremy, E., Karimi, E., Corre, E., Wichard, T., Anne Siegel, A., Catherine Boyen, C., Dittami, S.M.* (2023) Insights into the potential for mutualistic and harmful host-microbe interactions affecting brown alga freshwater acclimation. Molecular Ecology 32:703-723. https://onlinelibrary.wiley.com/doi/full/10.1111/mec.16766External link
98. Wichard, T. (2023) From model organism to application: Bacteria-induced growth and development of the green seaweed Ulva and the potential of microbe leveraging in algal aquaculture. Seminars in Cell & Developmental Biology 134:69-78. https://doi.org/10.1016/j.semcdb.2022.04.007External link
2022
97. Ulrich,J.F., Gräfe, M.S., Dhiman, S., Wienecke, P., Arndt, H.-D., Wichard, T. * (2022) Thallusin quantification in marine bacteria and algae cultures. Marine Drugs 20:690 https://doi.org/10.3390/md20110690External link
96. Morales-Reyes, C., Ghaderiardakani, F., Wichard, T.* (2022) Genome sequence of Halomonas sp. strain MS1, a metallophore-producing, algal growth-promoting marine bacterium isolated from the green seaweed Ulva mutabilis (Chlorophyta). Microbiology Resource Announcements e00685-22 https://doi.org/10.1128/mra.00685-22External link
95. Dhiman, S., Ulrich, J.F., Wienecke, P., Wichard, T., Arndt H-D.* (2022) Stereoselective total synthesis of (‒)-thallusin for bioactivity profiling. Angewandte Chemie International Edition 134:e202206746. https://doi.org/10.1002/anie.202206746External link
94. Mohr, J.F., Gama, S.*, Roy, S., Bellenger J.-B., Plass, W.*, Wichard, T.* (2022) Hydroxypyridinones in nitrogen-fixing bacterial cultures: a metal buffer for molybdenum and simulation of natural conditions. Metallomics 14:mfac055. https://doi.org/10.1093/mtomcs/mfac055External link
93. Moghaddam, J.A., Guo, H., Willing, K., Wichard, T., Beemelmanns, C.* (2022) Identification of the new prenyltransferase Ubi-297 from marine bacteria and elucidation of its substrate specificity. Beilstein Journal of Organic Chemistry 18:722–731. https://doi.org/10.3762/bjoc.18.72External link
92. Ghaderiardakani, F., Langhans, L., Kurbel, V.B., Fenizia, S., Wichard, T.* (2022) Metabolite profiling reveals insights into the species-dependent cold stress response of the green seaweed holobiont Ulva (Chlorophyta). Environmental and Experimental Botany 200:104913. https://doi.org/10.1016/j.envexpbot.2022.104913External link
91. Obolski, U.*, Wichard, T., Israel, A., Golberg, A., and Liberzon, A.* (2022) Modeling the growth and sporulation dynamics of the macroalga Ulva in mixed-age populations in cultivation and the formation of green tides. Biogeosciences 19:2263–2271. https://doi.org/10.5194/bg-19-2263-2022External link
90. Kwantes, M.*, Wichard, T.* (2022) The APAF1_C/WD40 repeat domain-encoding gene from the sea lettuce Ulva mutabilis sheds light on the evolution of NB-ARC domain-containing proteins in green plants. Planta 255:76. https://doi.org/10.1007/s00425-022-03851-0External link
89. Iličić, D., Woodhouse, J.N., Karsten, U., Zimmermann, J., Wichard, T., Quartino, M.L., Campana, G.L., Livenets, A. and Grossart, H.P.* (2022) Antarctic glacial meltwater impacts the diversity of fungal parasites associated with benthic diatoms in shallow coastal zones. Frontiers in Microbiology 13:805694. https://doi: 10.3389/fmicb.2022.805694External link
88. Liu, X., Blomme, J., Bogaert, K., D’hondt, S., Wichard, T., Deforce, D., Van Nieuwerburgh, F., De Clerck, O* (2022) Transcriptional profiling of gametogenesis in the green seaweed Ulva mutabilis identifies an RWP-RK transcription factors linked to reproduction. BMC Plant Biology 22:19. https://doi.org/10.1186/s12870-021-03361-3External link
87. Castro-Morales, K.*, Canning, A., Körtzinger, A., Göckede, M., Küsel, K., Overholt, A., Wichard, T., Redlich, S., Arzberger, S., Kolle, O., Zimov N. (2022) Effects of reversal of water flow in an Arctic floodplain river on fluvial emissions of CO2 and CH4. Journal of Geophysical Research: Biogeosciences 127: e2021JG006485. https://doi.org/10.1029/2021JG006485External link
2021
86. Hardegen, J., Braeutigam, P., Abendroth, C.*, Wichard, T.* (2021) Bisphenol A: Quantification in Complex Matrices and Removal by Anaerobic Sludges. Pollutants 1, 194-206. https://doi.org/10.3390/pollutants1040016External link
85. Cai, C.*, Gu, K., Zhao, H., Steinhagen, S., He, P., Wichard, T.* (2021) Screening and verification of extranuclear genetic markers in green tide algae from the Yellow Sea. PLoS ONE 16(6): e0250968. https://doi.org/10.1371/journal.pone.0250968External link
84. Vallet, M.*, Kaftan, F., Grabe, V., Ghaderiardakani, F., Fenizia, S., Svatoš, A., Pohnert, G., Wichard, T.* (2021) A new glance at the chemosphere of macroalgal–bacterial interactions: In situ profiling of metabolites in symbiosis by mass spectrometry. Beilstein Journal of Organic Chemistry 17:1313–1322. doi:10.3762/bjoc.17.91External link
83. Mohr, J.F., Baldeweg, F., Deicke, M., Morales-Reyes, C.F., Hoffmeister, D., Wichard, T.* (2021) Frankobactin metallophores produced by nitrogen-fixing Frankia Actinobacteria function in toxic metal sequestration Journal of Natural Products. 84:1216-1225. DOI: 10.1021/acs.jnatprod.0c01291External link
82. Nahor, O., Morales-Reyes, C., Califano, G., Wichard, T.*, Golberg, A., Israel, Á. (2021) Flow cytometric measurements as a proxy for sporulation intensity in the cultured macroalga Ulva (Chlorophyta). Botanica Marina 64:83-92. https://doi.org/10.1515/bot-2020-0050External link
81. Wichard, T. (2021) Chemisch vermittelte Wechselwirkungen zwischen der marinen Makroalge Ulva (Chlorophyta) und ihren assoziierten Bakterien: Entwicklung eines chemisch-ökologischen Modellsystems, Habilitationsschrift, Friedrich-Schiller-Universität Jena, 468 Seiten
2020
80. Ghaderiardakani, F., Quartino, M.L., Wichard, T.* (2020) Microbiome-dependent adaptation of seaweeds under environmental stresses: a perspective. Frontiers in Marine Science 7: 575228. doi: 10.3389/fmars.2020.575228 https://www.frontiersin.org/articles/10.3389/fmars.2020.575228/fullExternal link
79. Mohr, J.F., Weiss, A., Roy, S., Wichard, T.* (2020). Genome sequence of Frankia sp. strain CH37, a metallophore-producing, nitrogen-fixing actinobacterium isolated from the sea buckthorn, Hippophae rhamnoides (Elaeagnaceae). Microbiology Resource Announcement 9: e01184-20. https://doi.org/10.1128/MRA.01184-20External link
78. Kügler, S., Cooper, R.E., Boessneck, J., Küsel, K., Wichard, T.* (2020) Rhizobactin B is the preferred siderophore by a novel Pseudomonas isolate to obtain iron from dissolved organic matter in peatland. Biometals. Biometals 33: 415-433. DOI: 10.1007/s10534-020-00258-w https://link.springer.com/article/10.1007/s10534-020-00258-wExternal link
77. Wichard, T., Ghaderiardakani, F., Zimmermann, J., Karsten, K., Grossart, H.-P., Livenets, A. (2020) 'Biodiversity and adaptation of polar algae and their interactions with symbionts and parasites in a changing environment', in T. Fromm, C. Oberdieck, T. Matz, C. Wesche (eds) Reports on polar and marine research 745, Alfred Wegener Institute for Polar and Marine Research: Bremerhaven, pp. 93-103. doi: 10.2312/BzPM_0745_2020 https://epic.awi.de/id/eprint/52837/External link
76. Cooper, R.E., Wegner, C., Kügler, S., Remington, X., Ueberschaar, N., Wurlitzer, J.D., Stettin, D., Wichard, T., Pohnert, G., Küsel, K.* (2020) Iron is not everything: unexpected complex metabolic responses between iron-cycling microorganisms. ISME J. 14: 2675-2690. https://doi.org/10.1038/s41396-020-0718-zExternal link
75. Vockenberg T., Wichard T., Ueberschaar N., Franke M., Stelter M., Braeutigam P.* (2020) Sorption behaviour of amine micropollutants on polyethylene microplastics-Impact of aging and interaction with green seaweed. Environmental Science: Processes & Impacts 22:1678-1687. https://doi.org/10.1039/D0EM00119HExternal link
74. Polikovsky M.*, Califano G., Dunger N., Wichard T., Golberg A.* (2020) Engineering bacteria-seaweed symbioses for modulating the photosynthate content of Ulva (Chlorophyta): Significant for the feedstock of bioethanol production. Algal Research 49: 101945. https://doi.org/10.1016/j.algal.2020.101945External link
73. Alsufyani T., Califano G., Deicke M., Grueneberg J., Weiss A., Engelen A.H., Kwantes M., Mohr J.F., Ulrich J.F., Wichard T.* (2020) Macroalgal–bacterial interactions: identification and role of thallusin in morphogenesis of the seaweed Ulva (Chlorophyta), Journal of Experimental Botany 71: 3340-3349. https://doi.org/10.1093/jxb/eraa066External link
72. Califano G., Kwantes M., Abreu M.H., Costa R., Wichard T* (2020) Cultivating the macroalgal holobiont: effects of integrated multi-trophic aquaculture on the microbiome of Ulva rigida (Chlorophyta). Frontiers in Marine Science 7:52. doi: 10.3389/fmars.2020.00052External link
2019
71. Ghaderiardakani F., Califano G., Mohr J.F., Abreu M.H., Coates J.C., Wichard T* (2019) Analysis of algal growth- and morphogenesis-promoting factors in an integrated multi-trophic aquaculture system for farming the green seaweed Ulva spp. Aquaculture Environment Interactions 11:375-391. https://doi.org/10.3354/aei00319 External link
70. Deicke, M., Mohr, J-F., Roy, S., Herzsprung, P., Bellenger, J-P., Wichard, T.* (2019) Metallophore profiling of nitrogen-fixing Frankia spp. to understand metal management in the rhizosphere of actinorhizal plants. Metallomics 11External link: 810-821. https://doi.org/10.1039/C8MT00344KExternal link
69. Saha, M.*, Berdalet, E., Carotenuto, Y., Fink, P., Tilmann, H., John, U., Not, F., Pohnert, G., Potin, P., Selander, E., Vyverman, W., Wichard, T., Zupo, V., Steinke, M.* (2019) Using chemical language to shape future marine health. Frontiers in Ecology and the Environment 17: 530-537. https://doi.org/10.1002/fee.2113External link
68. Kurth, C., Wasmuth, I., Wichard, T., Pohnert, G., Nett, M.* (2019) Algae induce siderophore biosynthesis in the freshwater bacterium Cupriavidus necator H16. Biometals 32:77-88. https://doi.org/10.1007/s10534-018-0159-6External link
67. Steinhagen, S.*, Barco, A., Wichard, T., Weinberger, F. (2019) Conspecificity of the model organism Ulva mutabilis and Ulva compressa (Ulvophyceae, Chlorophyta). Journal of Phycology 55:25-36. https://doi.org/10.1111/jpy.12804External link
66. Kügler, S., Cooper, R.,E., Wegner, C.-E., Mohr, J.F., Wichard, T., Küsel, K.* (2019) Iron-organic matter complexes accelerate microbial iron cycling in an iron-rich fen. Science of Total Environment 646:972-988External link
2018
65. De Clerck, O.*, Kao, S-M., Bogaert, K.A., Blomme, J., Foflonker, F., Kwantes, M., Vancaester, E., Vanderstraeten, L., Aydogdu, E., Boesger, J., Califano, G., Charrier, B., Clewes, R., Del Cortona, A., D'Hondt, S., Fernandez-Pozo, N., Gachon, C.M., Hanikenne, M., Lattermann, L., Leliaert, F., Liu, X., Maggs, C.A., Popper, Z.A., Raven, J.A., Van Bel, M., Wilhelmsson, P.K.I., Bhattacharya, D., Coates, J.C., Rensing, S.A., Van Der Straeten, D., Vardi, A., Sterck, L., Vandepoele, K., Van de Peer, Y., Wichard, T., Bothwell, J.H.* (2018) Insights into the Evolution of Multicellularity from the Sea Lettuce Genome. Current Biology 28:2921-2933. https://doi.org/10.1016/j.cub.2018.08.015External link
64. Wichard, T.*, Beemelmanns, C. (2018) Role of chemical mediators in aquatic interactions across the prokaryote-eukaryote boundary. Journal of Chemical Ecology 44: 1008-1021. https://doi.org/10.1007/s10886-018-1004-7External link
63. Hermenau, R., Keishi, I., Gama, S., Hoffmann, B., Pfeifer-Leeg, M., Plass, W., Mohr, J.F., Wichard, T., Saluz H.,P., Hertweck, C.* (2018) Gramibactin is a bacterial siderophore with a diazeniumdiolate ligand system. Nature Chemical Biology 14:841-843. Online https://doi.org/10.1038/s41589-018-0101-9External link
62. Baumeister, T. U. H., Ueberschaar, N., Schmidt-Heck, W., Mohr, J. F., Deicke, M., Wichard, T.*, Guthke, R., Pohnert, G.* (2018) DeltaMS: A tool to track isotopologues in GC- and LC-MS data. MetabolomicsExternal link 14:41External link
61. Kessler, R.W., Weiss, A., Kuegler, S., Hermes, C. Wichard, T.* (2018) Macroalgal-bacterial interactions: Role of dimethylsulfoniopropionate in microbial gardening by Ulva (Chlorophyta). Molecular Ecology 27:1808-1819External link
60. Vockenberg, T.*, Wichard, T., Stelter, M., Bräutigam, P. (2018) Einfluss von Alterungsprozessen auf das Sorptionsverhalten von Mikroschadstoffen an Mikroplastik. Mitteilungen zur Umweltchemie und Ökotoxikologie 24:10-13
59. Protocols for Macroalgae Research, eds. B. Charrier*, T. Wichard*, C.R.K. Reddy* (2018) Preface/Editorial. Boca Raton: CRC Press, Francis & Taylor GroupExternal link
58. Kessler, R.W., Alsufyani, T., Wichard, T.* (2018) Purification of sporulation and swarming inhibitors from Ulva: application in algal life cycle controlling. In Protocols for Macroalgae Research, eds. B. Charrier, T. Wichard, C.R.K. Reddy, Chapter 8. Boca Raton: CRC Press, Francis & Taylor GroupExternal link
57. Califano, G., Wichard, T.* (2018) Preparation of axenic cultures in Ulva (Chlorophyta). In Protocols for Macroalgae Research, eds. B. Charrier, T. Wichard, C.R.K. Reddy, Chapter 9. Boca Raton: CRC Press, Francis & Taylor GroupExternal link
56. Kuhlisch, C., Califano, G., Wichard, T., Pohnert, G.* (2018) Metabolomics of intra- and extracellular metabolites from micro- and macroalgae using GC-MS and LC-MS. In Protocols for Macroalgae Research, eds. B. Charrier, T. Wichard, C.R.K. Reddy, Chapter 18. Boca Raton: CRC Press, Francis & Taylor GroupExternal link
55. Bösger, J., Kwantes, M., Wichard, T* (2018) Polyethylene glycol (PEG)-mediated transformation in the green macroalgae Ulva mutabilis (Chlorophyta): a forward genetic approach. In Protocols for Macroalgae Research, eds. B. Charrier, T. Wichard, C.R.K. Reddy, Chapter 31. Boca Raton: CRC Press, Francis & Taylor GroupExternal link
2017
54. Ghaderiardakani, F., Coates, J.C., Wichard T.* (2017) Bacteria-induced morphogenesis of Ulva intestinalis and Ulva mutabilis (Chlorophyta): a contribution to the lottery theory. FEMS Microbiology Ecology 93(8):fix094External link
53. Charrier, B.*, Abreu, M.H., Araujo, R., Bruhn, A., Coates, J.C., De Clerck, O., Katsaros, C., Robaina, R.R., Wichard, T. (2017) Furthering knowledge on seaweed growth and development to facilitate sustainable aquaculture. New Phytologist 216:967-975External link
52. Kessler, R.W., Crecelius, A.C.*, Schubert, U.S., Wichard, T.* (2017) In situ monitoring of molecular changes during cell differentiation processes in marine macroalgae through mass spectrometric imaging. Analytical Bioanalytical Chemistry 409:4893-4903. doi:10.1007/s00216-017-0430-7 External link
51. Wichard, T.* and Katsaros, C. (2017) Phycomorph: macroalgal development and morphogenesis. Botanica Marina 60(2):85-87. doi:10.1515/bot-2017-0017External link
50. Wichard, T.* (2017) Was den Meersalat in Form bringt. Nachrichten aus der Chemie 65:870-873External link
49. Weiss, A., Costa, R., Wichard, T.* (2017) Morphogenesis of Ulva mutabilis (Chlorophyta) induced by Maribacter species (Bacteroidetes, Flavobacteriaceae). Botanica Marina 60(2):197-206. doi:10.1515/bot-2016-0083External link
48. Katsaros, C., Weiss, A., Llangos, I., Theodorou, I., Wichard, T.* (2017) Cell structure and microtubule organisation during gametogenesis of Ulva mutabilis Føyn (Chlorophyta) Botanica Marina 60(2):123-135. doi:10.1515/bot-2016-0073External link
47. Fernand, F., Israel, A., Skjermo, J., Wichard T., Timmermans, K. R., Golberg A.* (2017) Offshore macroalgae biomass for bioenergy production: Environmental aspects, technological achievements and challenges. Renewable and Sustainable Energy Reviews. 75:35-45. doi.org/10.1016/j.rser.2016.10.046External link
46. Alsufyani, T., Weiss, A., Wichard, T.* (2017) Time course exo-metabolomic profiling in the green marine macroalga Ulva (Chlorophyta) for identification of growth phase-dependent biomarkers. Marine Drugs 15:14. doi:10.3390/md15010014External link
45. Kuhlisch, C., Deicke, M., Ueberschaar, N., Wichard, T., Pohnert, G.* (2017) A fast and direct liquid chromatography-mass spectrometry method to detect and quantify polyunsaturated aldehydes and polar oxylipins in diatoms. Limnology and Oceanography Methods 15:70-79. doi:10.1002/lom3.10143External link
2016
44. Wichard, T.* (2016) Bakterien-Algen-Interaktionen: Die Grünalge Ulva (Chlorophyta) kommt nur mit den richtigen Bakterien in Form [In: Rundgespräche Forum Ökologie, Bd. 45 »Die Sprache der Moleküle - Chemische Kommunikation in der NaturExternal link«, S. 69-82. 2016 Verlag Dr. Friedrich Pfeil, München].
43. Wichard, T.* (2016) Bakterien-induzierte Morphogenese der marinen Makroalge. BIOspektrum 22:585-588. doi:10.1007/s12268-016-0732-xExternal link
42. Wichard, T.* (2016) Identification of metallophores and organic ligands in the chemosphere of the marine macroalga Ulva (Chlorophyta) and at land-sea Interfaces. Frontiers in Marine Science 3:131. doi: 10.3389/fmars.2016.00131External link
41. Noumsi, J., C., Pourhassan, N., Darnajoux, R., Deicke, M., Wichard, T., Burrus, V., Bellenger, J-B.* (2016) Effect of organic matter on nitrogenase metal cofactors homeostasis in Azotobacter vinelandii under diazotrophic conditions. Environmental Microbiology Reports 8:76-84. doi: 10.1111/1758-2229.12353External link
40. Grueneberg, J., Engelen, A.H., Costa R., Wichard T.* (2016) Macroalgal morphogenesis induced by waterborne compounds and bacteria in coastal seawater. PLoS ONE 11: e0146307. doi:10.1371/journal.pone.0146307External link
2015
39. Oertel, W., Wichard, T.*, Weissgerber, A. (2015) Transformation of Ulva mutabilis (Chlorophyta) by vector plasmids integrating into the genome. Journal of Phycology 51: 963-979, doi: 10.1111/jpy.12336External link
38. Wichard, T.* (2015) Exploring bacteria-induced growth and morphogenesis in the green macroalga order Ulvales (Chlorophyta). Frontiers in Plant Science 6:86. doi: 10.3389/fpls.2015.00086External link
37. Wichard, T.*, Charrier B., Mineur F., Bothwell J. H., De Clerck O., Coates J. C. (2015) The green seaweed Ulva: A model system to study morphogenesis. Front. Plant Sci. 6:72. doi: 10.3389/fpls.2015.00072External link
36. Vesty, E.F., Kessler, R. W., Wichard, T.*, Coates, J.C.* (2015) Regulation of gametogenesis and zoosporogenesis in Ulva linza (Chlorophyta): comparison with Ulva mutabilis and potential for laboratory culture. Frontiers in Plant Science 6:15. doi: 10.3389/fpls.2015.00015External link
35. Pourhassan, N., Wichard, T., Roy, S., Bellenger, J-B.* (2015) Impact of elevated CO2 on metal homeostasis and the actinorhizal symbiosis in early successional alder shrubs. Environmental and Experimental Botany 109:168-176External link
2014
34. Deicke, M., Mohr, J. F., Bellenger, J. P., Wichard, T.* (2014) Metallophore mapping in complex matrices by metal isotope coded profiling of organic ligands. Analyst 23:6096 - 6099External link
33. Alsufyani, T., Engelen, A.H., Diekmann, O.E., Kuegler, S., Wichard, T.* (2014) Prevalence and mechanism of polyunsaturated aldehydes production in the green tide forming macroalgal genus Ulva (Ulvales, Chlorophyta). Chemistry and Physics of Lipids 183:100-109External link
32. Pourhassan, N., Gagnon, R., Wichard, T., Bellenger, J-B.* (2014) Identification of the hydroxamate siderophore ferricrocin in Cladosporium cladosporioides. Natural Product Communications 9: 539-540External link
31. Ribalet, F., Bastianini, M., Vidoudez, C., Acri, F., Berges, J., Ianora, A., Miralto, A., Pohnert, G., Romano, G., Wichard, T., Casotti, R.* (2014) Phytoplankton cell lysis associated with polyunsaturated aldehyde release in the northern Adriatic Sea. PLoSOne DOI:10.1371/journal.pone.0085947External link
2013
30. Deicke, M., Bellenger, J. P., Wichard, T.* (2013) Direct quantification of bacterial molybdenum and iron metallophores with ultra-high-performance liquid chromatography coupled to time-of-flight mass spectrometry. Journal of Chromatography A 1258:50-60External link
2012
29. Spoerner, M., Wichard, T.*, Bachhuber, T., Stratmann, J., Oertel, W. (2012) Growth and Thallus Morphogenesis of Ulva mutabilis (Chlorophyta) depends on a combination of two bacterial species excreting regulatory factors. Journal of Phycology 48:1433-1447External link
2011
28. Bellenger, J. P., Wichard, T., Xu, Y., and Kraepiel, A. M. L.* (2011) Essential metals for nitrogen fixation in a free-living N2-fixing bacterium: chelation, homeostasis and high use efficiency. Environmental Microbiology 13:1395-1411External link
2010
27. Dittami, S. M.*, Wichard, T., Malzahn, A. M., Pohnert, G., Boersma, M., Wiltshire, K. H. (2010) Culture conditions affect fatty acid content along with wound-activated production of polyunsaturated aldehydes in Thalassiosira rotula (Coscinodiscophyceae). Nova Hedwigia Beiheft 136:231-248External link
26. Wichard, T.*, Oertel, W. (2010) Gametogenesis and Gamete release of Ulva mutabilis and Ulva lactuca (Chlorophyta): Regulatory effects and chemical characterization of the "swarming inhibitor". Journal of Phycology 46:248-259External link
2009
25. Wichard, T.*, Bellenger, J. P., Morel, F. M. M., and Kraepiel, A. M. L. (2009) Role of the Siderophore Azotobactin in the Bacterial Acquisition of Nitrogenase Metal Cofactors. Environmental Science & Technology 43:7218-7224External link
24. Wichard, T., Mishra, B.*, Myneni, S. C. B., Bellenger, J. P., and Kraepiel, A. M. L. (2009) Storage and bioavailability of molybdenum in soils increased by organic matter complexation. Nature Geoscience 2:625-629External link
23. Kraepiel, A. M. L.*, Bellenger, J. P., Wichard, T., and Morel, F. M. M. (2009) Multiple roles of siderophores in free-living nitrogen-fixing bacteria. Biometals 22:573-581External link
2008
22. Wichard, T., Bellenger, J. P., Loison, A., and Kraepiel, A. M. L.* (2008) Catechol siderophores control tungsten uptake and toxicity in the nitrogen-fixing bacterium Azotobacter vinelandii. Environmental Science & Technology 42:2408-2413External link
21. Wichard, T.*, Poulet, S. A., Boulesteix, A. L., Ledoux, J. B., Lebreton, B., Marchetti, J., and Pohnert, G. (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. Progress in Oceanography 77: 30-44External link
20. Bellenger, J. P., Wichard, T., and Kraepiel, A. M. L.* (2008) Vanadium requirements and uptake kinetics in the dinitrogen-fixing bacterium Azotobacter vinelandii. Applied and Environmental Microbiology 74:1478-1484External link
19. Bellenger, J. P., Wichard, T., Kustka, A. B., and Kraepiel, A. M. L.* (2008) Uptake of molybdenum and vanadium by a nitrogen-fixing soil bacterium using siderophores. Nature Geoscience 1:243-246External link
18. Koski, M.*, Wichard, T., and Jonasdottir, S. H. (2008) "Good" and "bad" diatoms: development, growth and juvenile mortality of the copepod Temora longicornis on diatom diets. Marine Biology 154:719-734External link
2007
17. Wichard, T., Gerecht, A., Boersma, M., Poulet, S. A., Wiltshire, K., and Pohnert, G.* (2007) Lipid and fatty acid composition of diatoms revisited: Rapid wound-activated change of food quality parameters influences herbivorous copepod reproductive success. Chembiochem 8:1146-1153External link
16. Poulet, S. A.*, Cueff, A., Wichard, T., Marchetti, J., Dancie, C., and Pohnert, G. (2007) Influence of diatoms on copepod reproduction. III. Consequences of abnormal oocyte maturation on reproductive factors in Calanus helgolandicus. Marine Biology 152: 415-428External link
15. Poulet, S. A., Escribano, R., Hidalgo, P., Cueff, A., Wichard, T., Aguilera, V., Vargas, C. A., and Pohnert, G. (2007) Collapse of Calanus chilensis reproduction in a marine environment with high diatom concentration. Journal of Experimental Marine Biology and Ecology 352:187-199External link
14. Ribalet, F., Wichard, T., Pohnert, G., Ianora, A., Miralto, A., and Casotti, R.* (2007) Age and nutrient limitation enhance polyunsaturated aldehyde production in marine diatoms. Phytochemistry 68:2059-2067External link
2006
13. Wichard, T., and Pohnert, G.* (2006) Formation of halogenated medium chain hydrocarbons by a lipoxygenase/hydroperoxide halolyase-mediated transformation in planktonic microalgae. Journal of the American Chemical Society 128:7114-7115External link
12. Poulet, S. A.*, Wichard, T., Ledoux, J. B., Lebreton, B., Marchetti, J., Dancie, C., Bonnet, D., Cueff, A., Morin, P., and Pohnert, G. (2006) Influence of diatoms on copepod reproduction. I. Field and laboratory observations related to Calanus helgolandicus egg production. Marine Ecology-Progress Series 308:129-142External link
11. Stumpe, M., Bode, J., Gobel, C., Wichard, T., Schaaf, A., Frank, W., Frank, M., Reski, R., Pohnert, G., and Feussner, N.* (2006) Biosynthesis of C9-aldehydes in the moss Physcomitrella patens. Biochimica Et Biophysica Acta-Molecular and Cell Biology of Lipids 1761:301-312External link
2005
10. Wichard, T., Gobel, C., Feussner, I., and Pohnert, G.* (2005) Unprecedented lipoxygenase/hydroperoxide lyase pathways in the moss Physcomitrella patens. Angewandte Chemie-International Edition 44:158-161External link
9. Wichard, T., Poulet, S. A., Halsband-Lenk, C., Albaina, A., Harris, R., Liu, D. Y., and Pohnert, G.* (2005) Survey of the chemical defence potential of diatoms: Screening of fifty one species for alpha,beta,gamma,delta-unsaturated aldehydes. Journal of Chemical Ecology 31:949-958External link
8. Wichard, T., Poulet, S. A., and Pohnert, G.* (2005) 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. Journal of Chromatography B-Analytical Technologies in the Biomedical and Life Sciences 814:155-161External link
7. Carotenuto, Y.*, Wichard, T., Pohnert, G., and Lampert, W. (2005) Life-history responses of Daphnia pulicaria to diets containing freshwater diatoms: Effects of nutritional quality versus polyunsaturated aldehydes. Limnology and Oceanography 50: 449-454External link
6. Horner, R. A.*, Postel, J. R., Halsband-Lenk, C., Pierson, J. J., Pohnert, G., and Wichard, T. (2005) Winter-spring phytoplankton blooms in Dabob Bay, Washington. Progress in Oceanography 67:286-313External link
5. Paffenhöfer, G. A.*, Ianora, A., Miralto, A., Turner, J. T., Kleppel, G. S., d'Alcala, M. R., Casotti, R., Caldwell, G. S., Pohnert, G., Fontana, A., Müller-Navarra, D., Jonasdottir, S., Armbrust, V., Bamstedt, U., Ban, S., Bentley, M. G., Boersma, M., Bundy, M., Buttino, I., Calbet, A., Carlotti, F., Carotenuto, Y., d'Ippolito, G., Frost, B., Guisande, C., Lampert, W., Lee, R. F., Mazza, S., Mazzocchi, M. G., Nejstgaard, J. C., Poulet, S. A., Romano, G., Smetacek, V., Uye, S., Wakeham, S., Watson, S., and Wichard, T. (2005) Colloquium on diatom-copepod interactions. Marine Ecology-Progress Series 286:293-305External link
4. Senger, T., Wichard, T., Kunze, S., Gobel, C., Lerchl, J., Pohnert, G.*, and Feussner, I. (2005) A multifunctional lipoxygenase with fatty acid hydroperoxide cleaving activity from the moss Physcomitrella patens. Journal of Biological Chemistry 280: 7588-7596External link
2004
3. Pohnert, G.*, Adolph, S., and Wichard, T. (2004) Short synthesis of labeled and unlabeled 6Z,9Z,12Z,15-hexadecatetraenoic acid as metabolic probes for biosynthetic studies on diatoms. Chemistry and Physics of Lipids 131:159-166External link
2. Ianora, A.*, Miralto, A., Poulet, S. A., Carotenuto, Y., Buttino, I., Romano, G., Casotti, R., Pohnert, G., Wichard, T., Colucci-D'Amato, L., Terrazzano, G., and Smetacek, V. (2004) Aldehyde suppression of copepod recruitment in blooms of a ubiquitous planktonic diatom. Nature 429:403-407External link
1. Adolph, S., Bach, S., Blondel, M., Cueff, A., Moreau, M., Pohnert, G., Poulet, S. A.*, Wichard, T., and Zuccaro, A. (2004) Cytotoxicity of diatom-derived oxylipins in organisms belonging to different phyla. Journal of Experimental Biology 207:2935-2946External link