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Psi under high light

WebJun 10, 2024 · To protect PSI under a sudden transition of light intensity, angiosperms can use several alternative electron flows to regulate the PSI redox state after an abrupt transition from low to high light, such as the CEF and the water-water cycle [17,20,33,35,50]. The CEF is considered the main way for angiosperms to flourish under fluctuating light. WebFeb 2, 2016 · The results clearly show that (1) PGR5-dependent CEF-PSI is a key regulator of a rapid photosynthetic response to high light under fluctuating light conditions and (2) …

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WebDec 9, 2024 · Physiological studies revealed that expression of tetrameric PSI is favoured under high light, with an increased content of novel PSI-bound carotenoids (myxoxanthophyll, canthaxanthan and echinenone). WebCd decreased the efficiency of PSII to use the energy under high light with increasing Cd concentration. In contrast, the quantum yield of PSI did not show a significant difference among different Cd treatments. The activation of cyclic electron flow (CEF) and the inhibition of linear electron flow (LEF) due to Cd treatment were observed. things to do in lantau island https://mallorcagarage.com

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WebJul 1, 2024 · Under high light, plants should prevent PSI photoinhibition via maintaining high levels of P700 oxidation ratio (Munekage et al., 2002; Suorsa et al., 2016 ). The P700 oxidation ratio in angiosperms is mainly regulated by ΔpH ( Yamamoto et al., 2016; Armbruster et al., 2024; Takagi et al., 2024 ). WebMay 4, 2024 · Light poses a fundamental conundrum for redox balance in the PETC, mostly due to rapid and enormous fluctuations in light intensity in the natural environment. In plants, a large, energetically connected system of light-harvesting antennae concentrates light energy towards PSI and PSII, which is ideal for maximizing photosynthesis under low … Web57 minutes ago · These are affordable, reliable, and pretty high-tech, all for a budget price. Grab a few to illuminate those dark nooks and crannies with ease, and add a little extra … things to do in larkspur co

Photosynthetic signalling during high light stress and recovery ...

Category:PsaK2 Subunit in Photosystem I Is Involved in State Transition …

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Psi under high light

The High Light Response in Arabidopsis Requires the …

WebCd decreased the efficiency of PSII to use the energy under high light with increasing Cd concentration. In contrast, the quantum yield of PSI did not show a significant difference … WebNov 1, 2024 · Under high light, plants have evolved several mechanisms to protect PSI at donor and acceptor sides. In donor-side regulation, acidification of the thylakoid lumen …

Psi under high light

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WebJan 13, 2024 · She has taught science courses at the high school, college, and graduate levels. Learn about our Editorial Process. Updated on January 13, 2024. PSI definition: PSI … WebThe sensitivity of PSI to photoinhibition under high or fluctuating light is dependent on plant species (Huang et al., 2024; Terashima et al., 2024;Yamori et al., 2016). Moreover mutants, with ...

Webunder high light condition. The results indicate that PsaK2 is involved in the energy transfer from phycobilisome to PSI under high light condition and that PsaK2-dependent state … WebMay 3, 2024 · This suggests that NatL plants share properties of both LL and HL plants, and reflects the ability of NatL plants to cope efficiently with both low and high light intensities. It has been shown earlier, that the oxidation state of P700 is crucial for the photoprotection of PSI under high light (Tikkanen et al., 2014). To keep P700 in a ...

WebJan 1, 2024 · If the ΔpH formation under high light was impaired, the excess electron flow from photosystem II (PSII) would induce the over-reduction of photosystem I (PSI), causing photoinhibition of PSI ( Suorsa et al., 2012; Kanazawa et al., 2024 ). WebApr 24, 2024 · PSII parameters under fluctuating light. After dark adaptation for at least 15 min, intact young leaves were exposed to fluctuating light with cycles of low/high light (59/1809 μmol photons m −2 s −1).At the moderate heat stress of 42 °C, leaves showed significantly lower Y(II) at low light (Fig. 1a), probably owing to the heat-induced PSII …

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WebJul 30, 2024 · Spectroscopic analyses of chlorophyll fluorescence emission at 77K further showed that, while the cas mutant is not affected in state transition, it displays a … things to do in las vegaWebJul 1, 2015 · In the npq4 mutant, with low NPQ but normal photosynthetic control, high light leads to high reduction of PQ pool, and enhanced oxidation of PC and PSI. This indicates that in the absence... things to do in las veWebWe studied how high light causes photoinhibition of photosystem I (PSI) in the shade-demanding fern Nephrolepis falciformis, in an attempt to understand the mechanism of … things to do in las v