Hydractinia and Their Symbionts

Microbes associated with marine invertebrates are well-known to harbor an enormous biosynthetic potential. We combine new bioassays, genome sequencing and mining strategies to identify the encoded secondary metabolites with unique chemical scaffolds and potential pharmaceutical application.


Roman D, Raguž L, Keiff F, Meyer F, Barthels F, Schirmeister T, Kloss F, Beemelmanns C (2020) Modular Solid-Phase Synthesis of Antiprotozoal Barnesin Derivatives. Org Lett [Epub ahead of print] Details PubMed

Lee SR, Lee D, Eom HJ, Rischer M, Ko YJ, Kang KS, Kim CS, Beemelmanns C,* Kim KH* (2019) Hybrid Polyketides from a Hydractinia-Associated Cladosporium sphaerospermum SW67 and Their Putative Biosynthetic Origin Mar Drugs 17(11), 606. Details Open Access Code

Rischer M, Lee SR, Eom HJ, Park HB, Vollmers J, Kaster AK, Shin JH, Oh DC, Kim KH, Beemelmanns C (2019) Spirocyclic cladosporicin A and cladosporiumins I and J from a Hydractinia-associated Cladosporium sphaerospermum SW67. Org Chem Front 6, 1084-1093. Details Open Access

Rischer M, Raguz L, Guo H, Keiff F, Diekert G, Goris T, Beemelmanns C (2018) Biosynthesis, Synthesis and Activities of Barnesin A, a NRPS-PKS Hybrid Produced by an Anaerobic Epsilonproteobacterium. ACS Chem Biol 13(8), 1990-1995. Details PubMed

Wichard T, Beemelmanns C (2018) Role of chemical mediators in aquatic interactionas across the prokaryote eukaryote boundary. J Chem Ecol 44(11), 1008-1021. (Review) Details PubMed

Guo H, Rischer M, Sperfeld M, Weigel C, Menzel KD, Clardy J, Beemelmanns C (2017) Natural products and morphogenic activity of γ-Proteobacteria associated with the marine hydroid polyp Hydractinia echinata. Bioorg Med Chem 25(22), 6088-6097. Details PubMed Code

Rischer M, Klassen J, Wolf T, Guo H, Shelest E, Clardy J, Beemelmanns C (2016) Draft Genome Sequence of Shewanella sp. P1-14-1, a Bacterial Inducer of Settlement and Morphogenesis in Larvae of the Marine Hydroid Hydractinia Echinata Genome Announc 4(1), e00003-16. Details PubMed

Klassen JL, Rischer M, Wolf T, Guo H, Shelest E, Clardy J, Beemelmanns C (2015) Genome Sequences of Three Pseudoalteromonas Strains P1-8, P1-11 and P1-30 Isolated from the Marine Hydroid Hydractinia echinata Genome Announc. 3(6), e01380-15. Details PubMed

Klassen JL, Wolf T, Rischer M, Guo H, Shelest E, Clardy J, Beemelmanns C (2015) Draft Genome Sequences of Six Pseudoalteromonas sp. Strains P1-7a, P1-9, P1-13-1a, P1-16-1b, P1-25 and P1-26, which Induce Larval Settlement and Metamorphosis in Hydractinia echinata Genome Announc. 3(6), e01477-15. Details PubMed


Dr. Christine Beemelmanns


Phone: +49 3641 532-1525 Email: christine.beemelmanns@leibniz-hki.de

Dr. Huijuan Guo

Post Doc

Phone: +49 3641 532-1560 Email: huijuan.guo@leibniz-hki.de

Dr. Theresa Jautzus


Email: theresa.jautzus@leibniz-hki.de

Robin Mendler


Dr. Jamshid Amiri Moghaddam


Phone: +49 3641 532-1593 Email: jamshid.amiri.moghaddam@leibniz-hki.de

Chia-Chi Peng

PhD student

Email: Chia-chi_Peng@leibniz-hki.de

Dolli Ripin


Maja Rischer

Guest Scientist

Phone: +49 3641 532-1575 Email: maja.rischer@leibniz-hki.de

Paul Wilknitz