Malda G., Backhaus R. A., Martin C., Alterations in growth and crassulacean acid metabolism (CAM) activity of in vitro cultured cactus, Plant Cell, Tissue and Organ Culture, 1999, 58(1):1-9, doi: 10.1023/A:1006377206855
The study concerns Pelecyphora minima (Coryphantha minima in the publication) and compares growth and photosynthesis in and outside in vitro culture. The abstract describes measurements of gas exchange and tissue acidity, CO₂ uptake in light and darkness in culture, and a return to a typical CAM rhythm after acclimatisation. Access during the search covered the abstract, without detailed conditions or sample sizes.