A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Evaluation of visible-light wavelengths that reduce or oxidize the plastoquinone pool in green algae with the activated F0 rise method




TekijätMattila Heta, Havurinne Vesa, Antal Taras, Tyystjärvi Esa

KustantajaACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY

Julkaisuvuosi2022

JournalPhotosynthetica

Tietokannassa oleva lehden nimiPHOTOSYNTHETICA

Lehden akronyymiPHOTOSYNTHETICA

Vuosikerta60

Numero4

Aloitussivu529

Lopetussivu538

Sivujen määrä10

ISSN0300-3604

eISSN1573-9058

DOIhttps://doi.org/10.32615/ps.2022.049

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/177451794


Tiivistelmä

We recently developed a chlorophyll a fluorescence method (activated F0 rise) for estimating if a light wavelength preferably excites PSI or PSII in plants. Here, the method was tested in green microalgae: Scenedesmus quadricauda, Scenedesmus ecornis, Scenedesmus fuscus, Chlamydomonas reinhardtii, Chlorella sorokiniana, and Ettlia oleoabundans. The Scenedesmus species displayed a plant-like action spectra of F0 rise, suggesting that PSII/PSI absorption ratio is conserved from higher plants to green algae. F0 rise was weak in a strain of C. reinhardtii, C. sorokiniana, and E. oleoabundans. Interestingly, another C. reinhardtii strain exhibited a strong F0 rise. The result indicates that the same illumination can lead to different redox states of the plastoquinone pool in different algae. Flavodiiron activity enhanced the F0 rise, presumably by oxidizing the plastoquinone pool during pre-illumination. The activity of plastid terminal oxidase, in turn, diminished the F0 rise, but to a small degree


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Last updated on 2024-26-11 at 23:34