The photosynthetic apparatus of the CAM plant Tillandsia flabellate and its response to water deficit

Autor: Roberta Croce, Vincenzo Mascoli, Chen Hu, Eduard Elias
Přispěvatelé: Biophysics Photosynthesis/Energy, LaserLaB - Energy
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Hu, C, Mascoli, V, Elias, E & Croce, R 2023, ' The photosynthetic apparatus of the CAM plant Tillandsia flabellate and its response to water deficit ', Journal of Plant Physiology, vol. 282, 153945, pp. 1-10 . https://doi.org/10.1016/j.jplph.2023.153945
Journal of Plant Physiology, 282:153945, 1-10. Urban und Fischer Verlag GmbH und Co. KG
ISSN: 0176-1617
Popis: CAM plants are superior to C3 plants in drought resistance because of their peculiar photosynthesis pathway and morphological features. While those aspects have been studied for decades, little is known about the photosynthetic machinery of CAM plants. Here, we used a combination of biochemical and biophysical methods to study the photosynthetic apparatus of Tillandsia flabellate, an obligatory CAM plant. Most of the Photosystems super- and sub-complexes have properties very similar to those of Arabidopsis, with the main difference that in Tillandsia PSI-LHCI complexes bind extra LHCI. Functional measurements show that the PSI/PSII ratio is rather low compared to other plants and that the antenna size of both PSI and PSII is small. Upon 30-day water deficiency, the composition of the photosystems does not change significantly, PSII efficiency remains high and no Photosystem II photoinhibition was detected despite a reduction of non-photochemical quenching (NPQ).
Databáze: OpenAIRE
Externí odkaz: