Jaakko Kangasjärvi
Group Leader

Department of Biosciences
P.O. Box 65 (Viikinkaari 1)
00014 University of Helsinki
FINLAND

jaakko.kangasjarvi|at|helsinki.fi

Phone: +358 (0)2 941 59444


Maintenance

Katariina Vuorinen
katariina.vuorinen|at|helsinki.fi

ROS-Signaling Group

Our group belongs to the Center of Excellence of Molecular Biology of Primary Producers funded by the Academy of Finland. We are part of the Plant Stress Meta-Group at the University of Helsinki.

Our work combines plant physiology with genetics and molecular biology and concentrates on finding out how plants sense and transmit stress signals at the cellular level.

The primary focus is on understanding the signalling networks involving reactive oxygen species (ROS) such as hydrogen peroxide, superoxide, singlet oxygen and hydroxyl radical. ROS are produced by plant cells in a variety of situations. An active burst of ROS production is a common link between nearly all biotic and abiotic stresses including ozone and pathogens but ROS also play important roles during development. Previously thought to be merely damaging agents, ROS are now understood for their roles as signalling molecules.

To study ROS signalling we use ozone (O3) as a tool. Unlike other stimuli and stresses, O3 can be conveniently used to produce apoplastic ROS without direct manipulation of the plant.

NEWS!

We had the pleasure to see this week (21.07.2015) the CRK story published online in PLOS Genetics journal and on thursday seeing our paper advertised nicely at PLOS Genetics homepage.

Large-Scale Phenomics Identifies Primary and Fine-Tuning Roles for CRKs in Responses Related to Oxidative Stress
G. Bourdais, P. Burdiak, Adrien Gauthier, L. Nitsch, Jarkko Salojärvi, C. Rayapuram, Niina Idänheimo, Kerri Hunter, Sachie Kimura, E. Merilo, Aleksia Vaattovaara, K. Oracz, D. Kaufholdt, A. Pallon, D. T. Anggoro, D. Glów, J. Lowe, J. Zhou, Omid Mohammadi, Tuomas Puukko, A. Albert, H. Lang, D. Ernst, H. Kollist, Mikael Brosché, J. Durner, J. W. Borst, D. B. Collinge, S. Karpiński, M.F. Lyngkjær, S. Robatzek, Michael Wrzaczek, Jaakko Kangasjärvi, on behalf of the CRK Consortium

"Using insertion mutants Gildas Bourdais and colleagues analysed the roles of cysteine-rich receptor-like kinases in plant development and stress responses and show they have important roles as mediators of signalling specificity during regulation of stomatal aperture" PLOS Genetics

This work has been initiated from the ERA-PG PROSIG project and has been supported by the Academy of Finland. Prof. Jaakko Kangasjärvi (Plant stress group) has been directed this european project with four additional research groups from UK (Silke Robatzek, Norwich), the Netherlands (Jan Willem Borst, Waguenigen), Danemark (David Collinge) and Poland (Stanislaw Karpinski). Thanks to all the contributors!