Department of Chemical Engineering, University of Almería, Almería, Spain.
J Theor Biol. 2012 Jul 7;304:1-15. doi: 10.1016/j.jtbi.2012.03.021. Epub 2012 Mar 28.
In this study, an extension and actualization of a dynamic model of photosynthesis, previously published (Camacho Rubio et al., 2003), is presented. This model uses the concept of Photosynthetic Unit (PSU). In it, the processes of excited PSU net disappearance rate, photoinhibition and damaged PSU repair have been redefined in the context of photochemical and non-photochemical quenching. The phenomenon of photoacclimation in microalgae has been extensively incorporated into this model, significantly improving its prediction capabilities. A significant number of previously reported experimental results are successfully interpreted by the novel formulation: 1. Photosynthetic response of cells photoacclimated to different constant continuous irradiances (photoacclimated cells); 2. Short-term photosynthetic response of cells non-photoacclimated to different constant continuous irradiances (non-photoacclimated cells); 3. Kinetics of the photoacclimation response; 4. Photosynthetic response under intermittent light. It is expected that this model will contribute notably to the simulation of industrial algal mass cultures.
本研究对先前发表的光合作用动态模型（Camacho Rubio 等人，2003）进行了扩展和实际应用。该模型使用光合单位（PSU）的概念。在该模型中，激发的 PSU 净消失率、光抑制和受损 PSU 修复等过程在光化学和非光化学猝灭的背景下进行了重新定义。微藻的光驯化现象已被广泛纳入该模型，显著提高了其预测能力。通过新的公式成功解释了大量之前报道的实验结果：1. 对不同恒定连续辐照度进行光驯化的细胞的光合作用响应（光驯化细胞）；2. 对不同恒定连续辐照度未进行光驯化的细胞的短期光合作用响应（未光驯化细胞）；3. 光驯化响应动力学；4. 间歇光下的光合作用响应。预计该模型将为工业藻类大规模培养的模拟做出重要贡献。
