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Phytochemistry|March 4, 2009
Evolution of pyrrolizidine alkaloids in Phalaenopsis orchids and other monocotyledons: identification of deoxyhypusine synthase, homospermidine synthase and related pseudogenesNiknik Nurhayati, Daniela Gondé, Dietrich OberMolecules (Basel, Switzerland)|April 3, 2021
CRISPR/Cas9-Mediated Genome Editing in Comfrey (Symphytum officinale) Hairy Roots Results in the Complete Eradication of Pyrrolizidine AlkaloidsMahmoud M Zakaria, Brigitte Schemmerling, Dietrich OberBio-Protocol|June 28, 2021
Radioactive Tracer Feeding Experiments and Product Analysis to Determine the Biosynthetic Capability of Comfrey (Symphytum officinale) Leaves for Pyrrolizidine AlkaloidsThomas Stegemann, Lars H Kruse, Dietrich OberThe Plant Cell|October 7, 2004
Repeated evolution of the pyrrolizidine alkaloid-mediated defense system in separate angiosperm lineagesAndreas Reimann, Niknik Nurhayati, Anita Backenköhler, et al.Plos One|February 25, 2012
Independent recruitment of a flavin-dependent monooxygenase for safe accumulation of sequestered pyrrolizidine alkaloids in grasshoppers and mothsLinzhu Wang, Till Beuerle, James Timbilla, et al.Phytochemistry|June 10, 2015
Single cell subtractive transcriptomics for identification of cell-specifically expressed candidate genes of pyrrolizidine alkaloid biosynthesisChristian Sievert, Till Beuerle, Julien Hollmann, et al.The Journal of Biological Chemistry|February 4, 2003
Molecular evolution by change of function. Alkaloid-specific homospermidine synthase retained all properties of deoxyhypusine synthase except binding the eIF5A precursor proteinDietrich Ober, Reiner Harms, Ludger Witte, et al.Plant Molecular Biology|June 23, 2009
Homospermidine in transgenic tobacco results in considerably reduced spermidine levels but is not converted to pyrrolizidine alkaloid precursorsMohamed I S Abdelhady, Till Beuerle, Dietrich OberPhytochemistry|March 7, 2003
Evidence for general occurrence of homospermidine in plants and its supposed origin as by-product of deoxyhypusine synthaseDietrich Ober, Lutz Gibas, Ludger Witte, et al.Journal of Chemical Ecology|July 29, 2018
Specific Distribution of Pyrrolizidine Alkaloids in Floral Parts of Comfrey (Symphytum officinale) and its Implications for Flower EcologyThomas Stegemann, Lars H Kruse, Moritz Brütt, et al.Pageof 4