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https://doi.org/10.37427/botcro-2020-016

Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.

Hrvoje Lepeduš ; Josip Juraj Strossmayer University of Osijek, Faculty of Humanities and Social Sciences, L. Jägera 9, HR-31000 Osijek, Croatia
Željka Vidaković-Cifrek ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, HR- 10000 Zagreb, Croatia
Iris Šebalj ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, HR- 10000 Zagreb, Croatia
Jasenka Antunović Dunić ; Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Vera Cesar ; Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia

Puni tekst: engleski, pdf (374 KB) str. 185-192 preuzimanja: 254* citiraj
APA 6th Edition
Lepeduš, H., Vidaković-Cifrek, Ž., Šebalj, I., Antunović Dunić, J. i Cesar, V. (2020). Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.. Acta Botanica Croatica, 79 (2), 185-192. https://doi.org/10.37427/botcro-2020-016
MLA 8th Edition
Lepeduš, Hrvoje, et al. "Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.." Acta Botanica Croatica, vol. 79, br. 2, 2020, str. 185-192. https://doi.org/10.37427/botcro-2020-016. Citirano 20.10.2021.
Chicago 17th Edition
Lepeduš, Hrvoje, Željka Vidaković-Cifrek, Iris Šebalj, Jasenka Antunović Dunić i Vera Cesar. "Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.." Acta Botanica Croatica 79, br. 2 (2020): 185-192. https://doi.org/10.37427/botcro-2020-016
Harvard
Lepeduš, H., et al. (2020). 'Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.', Acta Botanica Croatica, 79(2), str. 185-192. https://doi.org/10.37427/botcro-2020-016
Vancouver
Lepeduš H, Vidaković-Cifrek Ž, Šebalj I, Antunović Dunić J, Cesar V. Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.. Acta Botanica Croatica [Internet]. 2020 [pristupljeno 20.10.2021.];79(2):185-192. https://doi.org/10.37427/botcro-2020-016
IEEE
H. Lepeduš, Ž. Vidaković-Cifrek, I. Šebalj, J. Antunović Dunić i V. Cesar, "Effects of low and high irradiation levels on growth and PSII efficiency in Lemna minor L.", Acta Botanica Croatica, vol.79, br. 2, str. 185-192, 2020. [Online]. https://doi.org/10.37427/botcro-2020-016

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Sažetak
Plant growth and reproduction depend on light energy that drives photosynthesis. In the present study we compared growth characteristics, photosynthetic pigments content and photosystem II (PSII) performance in Lemna minor L. grown in two different irradiation regimes: low light (LL) – 50 μmolPHOTONS m-2 s-1 and high light (HL) – 500 μmolPHOTONS m-2 s-1. The main goal was to investigate the photosynthetic regulatory mechanisms that ensure adjustment to different light conditions and integrate these observations with the data on plant multiplication and biomass production. For this purpose, we measured chlorophyll (Chls) and carotenoid (Cars) contents and analyzed the energy fluxes through the PSII by saturation pulse method as well as by Chl a transient induction and JIP test. In a comparison of the effect of LL and HL on plant multiplication and fresh biomass, it was shown that the effect on growth was primarily attributed to the biomass reduction in LL while the effect on number of plants was much smaller. Total Chl and Cars contents were decreased in plants exposed to HL which indicated long-term acclimation response to the increased irradiance. Furthermore, the HL plants revealed better capability for the utilization of absorbed light in photosynthesis accompanied by photoprotective adjustment of certain number of PSII reaction centers from active to dissipative mode of functioning. In conclusion, our study showed that duckweed plants had great adjustment potential to different irradiation conditions, which might be of great importance not only under variable light availability but also when simultaneously challenged by some other environmental disturbance (e.g. different pollutants).

Ključne riječi
chlorophyll fluorescence; duckweed; growth; JIP test; light; photosynthesis; photosynthetic pigments; photosystem II

Hrčak ID: 238381

URI
https://hrcak.srce.hr/238381

Posjeta: 550 *