TY - GEN A1 - Jung, Conrad H. G. A1 - Waldeck, Peter A1 - Petrick, Ingolf A1 - Akinwunmi, Mosunmol A1 - Braune, Steffen A1 - Jung, Friedrich A1 - Küpper, Jan-Heiner T1 - Light-induced changes in the morphology and fluorescence of Arthrospira platensis T2 - Clinical Hemorheology and Microcirculation N2 - The cyanobacterium Arthrospira platensis is a well-known source of bioactive substances. Growth and the generation of bioactive ingredients of Arthrospira platensis depend mainly on the quantity of light in a controlled environment. Photoinhibition is a time, nutrient, and light intensity-dependent decrease in photosynthetic efficiency. However, too strong illumination can induce two harmful effects: (1) photoinhibition as a reduction in photosynthetic rate and (2) photooxidation which can have lethal effects on the cells, and which can lead to total loss of the culture. The results of this microscopical study demonstrate, that under the procedures described and very high photon flux den-sities, not only a decrease in the photosynthetic efficiency but beyond, also destruction of Arthrospira platensis can occur. KW - Arthrospira platensis KW - light stress KW - photoinhibition KW - phototoxicity KW - morphology KW - fluorescence Y1 - 2023 UR - https://content.iospress.com/articles/journal-of-cellular-biotechnology/jcb239001 U6 - https://doi.org/10.3233/JCB-239001 SN - 1386-0291 VL - 9 IS - 1 SP - 71 EP - 77 ER -