Professor von Caemmerer is distinguished for her work on the modelling, including careful experimental verification, of photosynthesis, the carbon acquisition of plants, the biochemistry of carbon dioxide fixation and regulation of CO2 diffusion in leaves. Her work spans most of terrestrial plant photosynthetic metabolism, in three main areas of research: modelling of C3 photosynthesis and stomatal control of intercellular CO2 concentration; physiological and biochemical evaluation of genetically modified C3 plants; physiology and biochemistry of C4 metabolism in leaves and C3 x 001F – C4 intermediate metabolism.