Dr. Marion Pohlner


Dr. Marion Pohlner

Institute for Chemistry and Biology of the Marine Environment  (» Postal address)

W15-2-238 (» Adress and map )

+49 441 798-3350  (F&P

Dr. Marion Pohlner

Research interests

The main interest of my research are marine systems, especially (deep sea) sediments. Therefore, I joined two research cruises to the Pacific Ocean (SO248 and SO254) during my PhD project. I analyzed the composition of benthic microbial communities and the environmental conditions shaping those communities, with a special focus on the Roseobacter group and its biogeographical distribution. Within the framework of the recent project "MultiKulti - Cultivation of previously uncultivated microorganisms from different aquatic habitats" I´m interested in the abundance of Marine Group II Euryarchaeota with the goal to cultivate them. Next to research I coordinate the MultiKulti project, I´m involved in teaching and organisation of the master program "Microbiology" at the ICBM.

Scientific education and positions

2021 – present

PostDoc for coordination of the BMBF-project "MuliKulti" and teaching, University of Oldenburg, ICBM

2019 – 2020

Postdoc for research in CRC „Roseobacter“ (project A2) and teaching in the study program „MSc Microbiology“, University of Oldenburg, ICBM

2015 – 2019

PhD student in CRC „Roseobacter“, University of Oldenburg, ICBM
Thesis: „Contribution of the Roseobacter group to the abundance, distribution and activity of microbial communities in marine sediments”

2014 – 2015

Scholarship in CRC „Roseobacter“, University of Oldenburg, ICBM
Project: „Anaerobic growth of members of the Roseobacter group“

2011 – 2014

MSc in Microbiology, University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM)
Master thesis: “Microbial response to acetate amendment in sediment incubations”

2008 – 2011

BSc in Biology, University of Bayreuth
Bachelor thesis: “Microbial activity along a vertical pine forest soil profile”

Research cruises / Experiences abroad

Expedition SO254 (RV Sonne, February 2017)
Functional diversity of bacterial communities and the metabolome in the water column, sediment and in sponges in the southwest Pacific around New Zealand - Microbial abundance, diversity and activity in Pacific Deep Sea sediments

Workshop “Genomics in Environmental Microbiology” at Aarhus University (October 2016); led by Ian Marshall and Lars Schreiber

Expedition SO248 (RV Sonne, May 2016)
Ductional diversity of bacterial communities and the geometabolome in the central and north Pacific - Microbial abundance, diversity and activity in Pacific Deep Sea sediments

Lab visit at Texas A&M University - Corpus Christi and University of Houston - Clear Lake, Texas, USA (March 2015); cooperation partners: B. Kiel Reese and H. Mills


MarBio - Symposium "Marine Microbiota" 2019, Oldenburg, Germany: Pohlner M, Kanukollu S, Wemheuer B, Kiel Reese B, Degenhardt J, Dlugosch L, von Hoyningen-Huene A, Engelen B „Biogeography of Rhodobacteraceae in worldwide distributed sediments" (Presentation)

VAAM 2019, Mainz, Germany: Pohlner M, Degenhardt J, Wemheuer B, Schnetger B, Engelen B „Abundance and diversity of Bacteria and Archaea within deep-sea sediments along a Pacific transect from New Zealand to Alaska” (Presentation)

ISME 2018, Leipzig, Germany: Pohlner M, Kiel Reese B, Dlugosch L, Wemheuer B, Mills H, Cypionka H, Engelen B „The majority of Roseobacter group members in marine sediments belong to uncultured genera: an approach to define the unknowns” (Poster)

VAAM 2018, Wolfsburg, Germany: Pohlner M, Degenhardt J, von Hoyningen-Huene A, Wemheuer B, Engelen B „The distribution of benthic Roseobacter group members in the Pacific is shaped by nutrient availability at the seafloor and productivity in the water column” (Poster)

ISME 2016, Montreal, Canada: Kanukollu S, Pohlner M, Wemheuer B, Ghanem N, Herber J, Cypionka H, Engelen B „The Roseobacter group in marine sediments – abundance, diversity and metabolic potential“ (Poster)

VAAM 2016, Jena, Germany: Pohlner M, Kiel Reese B, Mills H, Cypionka H, Engelen B “Defining unknown members of the Roseobacter group in marine sediments” (Poster)

VAAM 2015, Marburg, Germany: Pohlner M, Kanukollu S, Cypionka H, Engelen B “Identification of metabolically active microbial communities in sediments by two independent RNA-based in vivo labeling techniques” (Poster)


Pohlner M, Dlugosch L, Wemheuer B, Mills H, Engelen B, Reese BK (2019) The Majority of Active Rhodobacteraceae in Marine Sediments Belong to Uncultured Genera: A Molecular Approach to Link Their Distribution to Environmental Conditions. Front Microbiol 10:659, doi.org/10.3389/fmicb.2019.00659.

Wemheuer F, von Hoyningen-Huene AJE, Pohlner M, Degenhardt J, Engelen B, Daniel R, Wemheuer B (2019) Primary Production in the Water Column as Major Structuring Element of the Biogeographical Distribution and Function of Archaea in Deep-Sea Sediments of the Central Pacific Ocean. Archaea, Article ID 3717239, doi.org/10.1155/2019/3717239.

Ziesche L, Wolter L, Wang H, Brinkhoff T, Pohlner M, Engelen B, Wagner-Döbler I, Schulz S (2019) An Unprecedented Medium-Chain Diunsaturated N-acylhomoserine Lactone from Marine Roseobacter Group Bacteria. Mar. Drugs 2019, 17:1, doi.org/10.3390/md17010020.

Pohlner M, Degenhardt J, von Hoyningen-Huene A, Wemheuer B, Erlmann N, Schnetger B, Engelen B (2017) The biogeographical distribution of benthic Roseobacter group members along a Pacific transect is linked to oceanic provinces with comparable nutrient composition. Front Microbiol 8: 2550, doi.org/10.3389/fmicb.2017.02550.

Pohlner M, Marshall I, Schreiber L, Cypionka H, Engelen B (2017) Draft genome sequence of Pseudoruegeria sp. SK021, a representative of the marine Roseobacter group, isolated from North Sea sediment. Genome A 5:e00541-17, doi.org/10.1128/genomeA.00541-17.

Harig T, Schlawis C, Ziesche L, Pohlner M, Engelen B, Schulz S (2017) Nitrogen-containing volatiles from marine Salinispora pacifica and Roseobacter-group bacteria. J Nat Prod, doi.org/10.1021/acs.jnatprod.7b00789.

Kanukollu S, Voget S, Pohlner M, Vandieken V, Petersen J, Kyrpides NC, Woyke T, Shapiro N, Göker M, Klenk HP, Cypionka H, Engelen B (2016) Genome sequence of Shimia sp. SK013, a representative of the Roseobacter group isolated from marine sediment. SIGS 11:1-10, doi.org/10.1186/s40793-016-0143-0.


Applied methods

Analysis of microbial diversity by Illumina-sequencing and DGGE of 16S rRNA genes and transcripts, quantification of microorganisms and physiological groups by qPCR, cultivation of aerobic and anaerobic microorganisms, activity measurements (exoenzymes, sulfate reduction rates), stable-isotope-probing

(Changed: 19 Dec 2022)  |