Pedersen group - Wetland plant resilience

Pedersen group presentation

We develop climate-resilient rice varieties that can withstand flooding, salinity, and drought conditions. By identifying and enhancing key traits, we aim to improve rice tolerance to these abiotic stresses. We also explore ways to reduce methane emissions from paddy fields by modifying root traits that influence anaerobic soil processes and the physiological and anatomical root traits that control the methane emission from the rice canopy (check-out our Competencies and Facilities). Moreover, we study the global distribution patterns of wetland plants, and try to determine how specific functional traits contribute to the plants' ecological adaptability and survival. Thus, by using rice as a model wetland plant, we employ integrative methods to address both food security and environmental sustainability challenges.

 

 

NERICA rice at KALRO, KEClimate-smart African rice
With key partners in Tanzania, this project seeks to develop flood- and salinity tolerant rice based on novel tolerances identified in more than 600 genotypes of African rice. Funded by Danish International Development Assistance (2020-2026). Read more!


Flux chamber for CH4 measurements at IRRIPlant-mediated diffusion of greenhouse gases
Juan Jiménez is investigating the importance of root traits in paddy rice for greenhouse gas emissions. This research is a collaboration with the International Rice Research Institute and is funded by the Novo Nordisk Foundation (2025–2028). Read more!


KALRO experimental station in Kenya

Climate-resilient and eco-friendly rice for Africa
Here we have expanded the focus to also include drought tolerance and direct-seeding to reduce methane emission from African rice production. Funded by Danish International Development Assistance (2025-2030). Read more!


Triodia

Root responses to soil water gradients in two species of Triodia
Feathertop spinifex (Triodia schinzii) and soft spinifex (Triodia pungens) are two common monocot species within the flora of Western Australia. This study aims to investigate why feathertop spinifex tends to occupy more arid environments compared to soft spinifex by assessing root responses to gradients in soil water content. 

 

 

 

Ole Pedersen, Abdel Ismail and Susan Nchimbi-Msolla

Most of our research is conducted in collaboration with other institutions, and this diagram provides a graphical representation of the collaboration based on publications. Below is a list of some of the most important, along with the topics of collaboration.

International Rice Research Institute (IRRI) in Los Baños, the Philippines (Dr Amelia Henry) and Nairobi, Kenya (Dr Abdel Ismail). Research on abiotic stress tolerance in rice and breeding for climate resilience. IRRI is a key partner in the project "Climate-resilient and eco-friendly rice for Africa", and we are also collaborating with IRRI on their REMET project focusing on GHG emissions from rice.

Nagoya University, Japan (Professors Motoyuki Ashikari and Mikio Nakazono). Research on root responses to soil flooding and drought.

Sokoine University of Agriculture (SUA), Tanzania (Professor Susan Nchimbi-Msolla). Research on phenotyping for submergence, salinity and drought in African rice genotypes. SUA is a key partner in the project "Climate-resilient and eco-friendly rice for Africa".

The University Western Australia, Australia (Professors Erik Veneklaas and Sergey Shabala) where I am also an adjunct professor. Root responses to drought of Triodia species, a common genus of dryland grasses in Western Australia.

Udine University, Italy (Associate Professor Valentino Casolo). Rice tissue analyses of water soluble carbohydrates and starch.

Florida Atlantic University, the U.S. (Prof Marguerite Koch) where I am also an adjunct professor. Seagrass responses to climate change including responses to hypoxia and hypersalinity.

 

 

 

 

Alumni

This list of alumni may not be exhaustive, but it offers a great overview of the work our students have done over the past five years.

Alessandro Prichierri - Oxygen consumption by grape wine cuttings (visiting PhD); 2024

Anders Skipper - Flood tolerance of ancient wheat cultivars (MSc); 2018

Anita Bruun Nielsen - Indflydelsen af rastende gæs på klitsøernes vegetation (BSc); 2013

Anna Pii Hjørne - Phytotoxic effects of organic acids (7.5 ECTS project); 2019

Asbjørn Hansen - Drought tolerance of African rice (BSc); 2021

Asbjørn Hansen - Root traits conferring drought tolerance of African rice (MSc); 2023

August K Dinsen Probiotics and salinity tolerance in rice (BSc); 2019

Carlo Bravo - The role of humic acids in root plaque formation (visiting PhD); 2021 (see this blog-post)

Christopher Steiness Aerobic and anerobic catabolism in roots of chickpea (BSc); 2021

Christopher Steiness - The importance of leaf gas films for flood tolerance or rice (MSc); 2024 (see this blog-post)

Dina Djurhuus Relationship between anaerobic germination and submergence tolerance in African rice (MSc); 2025 (see this blog-post)

Don Bosco Tuan Anh Tran - Mechanisms of salt tolerance in rice (BSc); 2022

Elisa PellegriniRoots in armour - a barrier induced to protect against intrusion of soil phytotoxins? (Marie-Curie); 2019-2021

Emil JW Anthony Root barriers to radial oxygen loss and salt intrusion (BSc); 2020  

Fion Murphy - Submerged macrophyte patterns of Lake Constance 1967-2016 (MSc); 2017

Guillermo Toro - Root responses to water deficits in landraces of Lagenaria siceraria (Postdoc); 2022 (see this blog-post)

Hans Benjamin Umbhau Jensen - Leaf gas films and submergence tolerance of rice (BSc); 2022

Ida Rose Pedersen - Tæppegræs: Catabrosa aquatica (BSc); 2016

Jesper Rauff Schultz Brownification of lobelia lakes in National Park Thy (MSc); 2018

Joel Gilboa Jacobsen - Can Oryza rufipogon resist salinification more effectively than IRRI-154? (BSc); 2022

Johan Emil Kjær  - Toxicity of organic acids and Fe in crops (BSc) (see this blog-post); 2018

Johan Emil Kjær - Root barriers to radial oxygen in loss in wild rice (MSc); 2020

Jonatan Lund Hansen Flood tolerance of spelt versus modern wheat (BSc); 2018

Juan Jimenez Serena - Root barriers to radial oxygen loss in Urochlora (PhD); 2020

Line Dam Jessen - Gas film retention of wild rice during submergence (BSc); 2021

Louise Vikjær Bote - Ecophysiology of vegetation in lobelia lakes (BSc); 2019

Lucas León Peralta Ogorek - Roots in armour (PhD); (see this blog-post) 2022

Maja S Pedersen Probiotics and salinity tolerance in rice (BSc); 2019

Marco BK Kowinicki Probiotics and salinity tolerance in rice (BSc); 2019

Mathilde M Bartholin - Gas film retention of wild rice during submergence (PUK); 2021

Max Stecher - Habitat analysis of wild species of rice – a GIS approach (MSc) (see this blog-post); 2021

Mikkel Madsen-Østerbye - Brownification of lobelia lakes (PhD); 2023

My Hemmeth Børjesen - Toxicity of organic acids  and Fe in crops (BSc) (see this blog-post); 2018

Nana H Mathiesen Phytotoxic effects of organic acids (7.5 ECTS project); 2019

Oliver Mørk - Tolerance of wheat to partial submergence (MSc) (see this blog-post); 2018

Rasmus Klausen - Sollysets indvirkning på den bakterielle nedbrydning af humusstoffer i Tvorup Hul (BSc); 2016

Rikke Perslev - The influence on rice root traits on methane emissions (Bsc); 2024

Sara Natale - Stem photosynthesis (visiting PhD); 2022

Sara Gargiulo - Greenhouse gas eimission from rice (visiting PhD); 2023, 2024

Shuai Tong - The resilence journey of rice (PhD); 2020-2023

Signe Smidt - The influence on rice root traits on methane emissions (Bsc); 2024

Simone Møller Mortensen - Indflydelsen af rastende gæs på klitsøernes vegetation (BSc); 2013

Sune Ringsing Nielsen - Flood tolerance of chickpea (BSc); 2018

Sune Ringsing Nielsen - Past and present vegetation in softwater lakes (MSc); 2020

Søren Enghoff-Poulsen - Submergence tolerance of wheat (MSc); 2014

Tobias S Hjort Probiotics and salinity tolerance in rice (BSc); 2019

Trine LK Hansen - Root barriers to radial oxygen loss and water use (BSc); 2020

Victor Carp Kofoed - Flood tolerance of a wild rice relative (BSc); 2019

Viggo K Bastegaard Effects of root dimension on water retention in roots (Bsc); 2021

Zhiwei Song - Phenotypic plasticity of rice roots (PhD) (see this blog-post); 2024

 

 

Myriophyllum with gas bubbles

Tropica Aquarium Plants – Tropica is one of the world's largest producers of aquatic ornamental plants. I am often involved in various R&D projects with Tropica, and these collaborations are always led by Dr. Troels Andersen. Tropica is an indispensable partner, often providing unique experimental plant material for both research and teaching.

Microsensors

Unisense - Unisense provides high-performance microsensors and complete measuring systems for a wide range of applications in environmental and biomedical research. In the past, I was one of the seven founders of this company, but I have never been involved in its day-to-day operations. However, I currenlty serve on the board of directors and have taught regularly on microsensor workshops.

 

 

Fieldwork on Fieldbiology III

Our group members are involved in supervision of BSc, MSc, PhD and postdocs - project topics for new students are available here. Moreover, we teach compulsory first year biology courses as well as an elective course at the MSc level in biology.

General Ecology (compulsory course at first year Biology)

Diversity of Organisms (compulsory course at first year Biology)

Field Biology III (stream and lake ecology) (compulsory course at first year Biology)

Freshwater Ecology (elective at MSc level)

 

Researchers

Name Title Phone E-mail
Dan Liu Visiting PhD Student E-mail
Juan De La Cruz Jimenez Serna Postdoc +4535324487 E-mail
Ole Pedersen Professor E-mail
Zhiwei Song Postdoc +4531815093 E-mail

Contact

Professor Ole Pedersen
Freshwater Biology
Universitetsparken 4, 3rd floor
DK-2100 Copenhagen

opedersen@bio.ku.dk
Mobile: +45 23747641

ORCID: 0000-0002-0827-946X

Competencies and Facilities

Competencies and FacilitiesOur group excels in state-of-the-art research infrastructure and analytical expertise. Check them out here!

Publications

Publications

Publications by Ole Pedersen are accessible from here!

Featured paper

Featured publicationAnatomical and physiology responses of roots and rhizomes in Oryza longistaminata to soil water gradients - click here to access it

Student projects

Student projects

Are you curious to see what you can do during your BSc or MSc thesis project? Check it out on this link!

External members:

Name Title Institution E-mail
Albert Guldborg Andersen MSc thesis student University of Copenhagen Email
Chen Lin Assistant Professor Yangzhou University Email
Elisa Pellegrini Assistant Professor Udine University Email
Shuai Tong Postdoc Udine University Email
Tobias Guhr Visiting MSc student Universität Bonn Email