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The xanthophyll cycle in higher plants and green algae: its role in the photosynthetic apparatus
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SYSNO ASEP 0027795 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The xanthophyll cycle in higher plants and green algae: its role in the photosynthetic apparatus Title Xantofylový cyklus u rostlin a zelených řas: jeho role ve fotosyntetickém aparátu Author(s) Masojídek, Jiří (MBU-M) RID, ORCID
Kopecký, Jiří (MBU-M) ORCID
Koblížek, Michal (MBU-M) RID, ORCID
Torzillo, G. (IT)Source Title Book of Abstracts, „Photosynthesis and Stress“. - Brno, 2005 Pages s. 121-121 Number of pages 1 s. Action Biophysical and Biochemical Methods in Photosynthesis Research Central-European Conference Event date 15.09.2005-16.09.2005 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords xanthophyll cycle ; alga Subject RIV EE - Microbiology, Virology CEZ AV0Z50200510 - MBU-M (2005-2011) Annotation Light-induced conversion of violaxanthin to zeaxanthin, the so-called xanthophyll cycle serves as a major, short-term light acclimation mechanism in higher plants. The role of xanthophylls in thermal dissipation of surplus excitation energy was deduced from the linear relationship between zeaxanthin formation and the magnitude of nonphotochemical quenching. We have studied the role of the xanthophyll cycle in the adaptation of several species of green algae (Chlorella, Scenedesmus, Haematococcus, Chlorococcum, Spongiochloris) to high irradiance. The xanthophyll cycle was found functional in all tested organisms; however its contribution to nonphotochemical quenching is not as significant as in higher plants. We assume that algae rely on other dissipation mechanism(s), which operate along with the xanthophyll cycle-dependent quenching Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2006
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