Antrittsvorlesung von Prof. Uwe Rascher
Im Rahmen des Dies Academicus hält Prof. Uwe Rascher seine Antrittsvorlesung mit dem Titel: "Imaging and imagining the red glow of global photosynthesis - Measuring plant fluorescence across scales to understand the dynamics of photosynthesis and stress resilience".
Zeit
Mittwoch, 20.05.26 - 15:00 Uhr
Veranstaltungsformat
Vortrag
Themengebiet
Plant photosynthesis is one of the best understood biological pathway, which combines photosynthetic light absorption, the usage of the energy in light reactions and the biochemical fixation of atmospheric CO2. Decades of basic and applied research have produced a good mechanistic understanding of the underlying mechanisms and their regulatory properties. Fluorescence techniques are a widely used approach to directly quantify charge separation at the photosystems and to quantify the efficiency of photosynthetic light reactions non-invasively. Because of the rapid development of optical sensors and cameras, also fluorescence techniques have been greatly refined in the past years and nowadays fluorescence sensors can capture the fluorescence signal from larger distances enabling fluorescence measurements even from aircraft and satellite sensors. In this seminar I will re-visit our current scientific understanding of the mechanistic link between the fluorescence signal and the functional properties of photosynthetic light reactions. I will give an update on the rapid development of new fluorescence measurement concepts, which include laser-induced fluorescence transients and the retrieval of solar-induced fluorescence from airborne and satellite platforms. These novel data, which for the first time allow monitoring of large scale dynamics of photosynthetic efficiency are exemplified with selected case studies. Finally, I will introduce the FLEX satellite mission (FLEX, FLuoresence EXplorer), which is currently implemented by the European Space Agency as Earth Explorer 8 and which will be launched in September 2026. FLEX will provide global maps of solar-induced fluorescence and actual photosynthetic rates, which will allow for the first time to study the spatio-temporal dynamics of vegetation fluorescence and actual photosynthesis.
Referierende
Prof. Uwe Rascher
Zielgruppen
Studierende
Wissenschaftler*innen
Alle Interessierten
Ort
Meckenheimer Allee 176 (Geozentrum, Eingang durch den Hof Katzenburgweg)
Raum
Hörsaal IV
Reservierung
nicht erforderlich
Veranstalter
Universität Bonn
Kontakt