A paper featuring the LI-6800 Portable Photosynthesis System was recently published in Plant and Cell Physiology. This publication explores how the color of actinic light affects the estimate of the electron transport rate (ETR) when calculated from fluorescence measurements.
By changing the proportion of red and blue in the actinic light, the authors observed a difference between true ETR (J) and ETR calculated from Chl fluorescence (Jf).
RACiR Method Publication
Another LI-6800 publication presents a new way to measure CO2 response. Traditional CO2 response curves measure assimilation (A) and calculate intercellular CO2 (Ci) at a series of steady-state CO2 concentrations. Depending on the number of concentrations being measured, it can take 30-40 minutes to make measurements for each response curve. The Rapid A-Ci Response (RACiR™) Method uses a non-steady-state approach by ramping the concentration of CO2 Reference very quickly. This means you can generate CO2 response curve data in less time and with more data points (which may reduce error for parameter estimation). In ideal conditions, a RACiR curve for parameter estimation can take as little as 5 minutes.
Read the open-access publication: The rapid A-Ci response: photosynthesis in the phenomic era.
Check out our recent posters from ESA, Botany, and the 2017 Western Photosynthesis Conference.