Applications for GFS-3000

Fagus Sylvatica: Gas Exchange with Fluorescence Imaging

Result of a combined measurement using the GFS-3000 together with the IMAGING-PAM (see system combinations) on a dry-stressed Fagus sylvatica leaf. The dependence of CO2-assimilation on the intercellular CO2-concentration has been plotted. The patchiness in the fluorescence images is the more pronounced the higher the CO2-concentration.

Nicotiana Tabacum: Temperature-Dependence of Dark-Respiration

The temperature of a tobacco leaf was increased in steps from 15 to 45 °C in the dark. The dark-respiration increased while Fv/Fm measured with the LED-Array/PAM-Fluorometer 3055-FL decreased markedly at temperatures above 30 °C.

Solanum Lycopersicum: Twin-Measurement with different Temperature Regimes using two GFS-3000

The temperature control of the Standard Measuring Head 3010-S allows the assessment of gas exchange in an increased temperature regime but otherwise unchanged conditions. Here we demonstrate a twin measurement, where one leaflet was kept at ambient conditions, while the other had an increased temperature regime (+5 °C). As can be seen in the upper panel, the night-respiration is increased at high temperatures; also, at low light levels, the uptake of CO2 is lower in the increased temperature regime than under unchanged conditions.

Solanum Lycopersicum: Twin-Measurement with different Temperature Regimes using two GFS-3000