Talk by Stanisław Karpiński, Warsaw University of Life Sciences – University of Copenhagen

Copenhagen Plant Science Centre > Event calendar > 2015 > Talk by Stanisław Karp...

Talk by Stanisław Karpiński, Warsaw University of Life Sciences

On 13 July at 15.00-16.00 Prof. Stanisław Karpiński from Department of Plant Genetics, Breeding and Biotechnology, Warsaw University of Life Sciences will give a talk on:

Stress, Memory and Computing in Plant Leaves.

Various environmental stresses cause absorption of light energy in excess of that required for photosynthesis. Foliar heat dynamics measurements combined with time-resolved fluorescence demonstrates that higher plants evolved genetic, molecular and physiological global regulatory system, which optimizes photosystem II quantum-molecular functions and the fate of absorbed photons.

Our results indicate the role of the PsbS and photosystem II antenna molecular organization in efficient and discrete global regulation of the rates between photochemistry, fluorescence, and heat. This is associated with cellular automata-like regulation of spatiotemporal pattern of foliar reactive oxygen species (ROS) and hormonal signaling, of gene expression, chlorophyll fluorescence decay, stomatal conductance that conditionally regulate plant acclimation, defenses, growth and yield.

We concluded that plants during growth perform discrete global regulation of the rates between fluorescence, heat dissipation, photochemistry and retrograde signaling thus perform biological computing aimed at simultaneous and perpetual optimizing of various environmental stress responses. This allows to reach the best possible seed yield and fitness in multivariable natural environment.

About Stanisław Karpiński:

Professor Stanisław Karpiński is a member of the academic staff of the Institute of Genetics, Plants Raising and Biotechnology of the Warsaw University of Life Sciences. His research concerns plants molecular physiology and biotechnology with special focus of photosynthesis signaling.

He has pursued his scientific career in Sweden, where he was granted Ph.D. degree in 1994, and in 1999 he became senior lecturer and associated professor in the Department of Botany, at the Stockholm University. In 2004 he became full Professor of molecular plant physiology and in 2009 he was awarded the title of professor of biological sciences in Poland by the President.