Impact of foliar spray of zinc oxide nanoparticles on the photosynthesis of Pisum sativum L. under salt stress

Elshoky, Hisham A.; Yotsova, Ekaterina; Farghali, Mohamed A.; Farroh, Khaled Yehia; El-Sayed, Kh.; ElZorkany, Heba ElSayed; Rashkov, Georgi D.; Dobrikova, Anelia G.; Borisova, Preslava; Stefanov, Martin; Ali, Maha A.; Аpostolova, Emilia

doi:10.1016/j.plaphy.2021.08.039

Cited by 42 publications

(20 citation statements)

References 68 publications

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“…Previous studies and the present study revealed some differences in the amount of chlorophyll and Chl a/b ratio in pea and maize under physiological conditions [ 24 , 25 , 26 , 27 , 57 ] and Supplementary Table S1 . Based on these studies, different organizations of the thylakoid membranes in C3 and C4 plants could be suggested.…”

Section: Discussionsupporting

confidence: 58%

“…The photosynthetic CO 2 assimilation rates, the photosynthetic efficiency, the biomass production and the efficient use of light in C4 plants are higher than in C3 plants [ 22 , 23 ]. Previous studies also revealed that the ratios chlorophyll a/b , lipid/chlorophyll and lipid/protein, as well as the mobility of pigment–protein complexes in thylakoid membranes of C3 and C4 plants are different [ 24 , 25 , 26 , 27 ]. Furthermore, the plants with these two photosynthetic pathways respond quite differently to changes in the environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Photosynthetic Apparatus Functions by Chlorophyll Fluorescence and P700 Absorbance in C3 and C4 Plants under Physiological Conditions and under Salt Stress

Stefanov

Rashkov

Аpostolova

2022

IJMS

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Functions of the photosynthetic apparatus of C3 (Pisum sativum L.) and C4 (Zea mays L.) plants under physiological conditions and after treatment with different NaCl concentrations (0–200 mM) were investigated using chlorophyll a fluorescence (pulse-amplitude-modulated (PAM) and JIP test) and P700 photooxidation measurement. Data revealed lower density of the photosynthetic structures (RC/CSo), larger relative size of the plastoquinone (PQ) pool (N) and higher electron transport capacity and photosynthetic rate (parameter RFd) in C4 than in C3 plants. Furthermore, the differences were observed between the two studied species in the parameters characterizing the possibility of reduction in the photosystem (PSI) end acceptors (REo/RC, REo/CSo and δRo). Data revealed that NaCl treatment caused a decrease in the density of the photosynthetic structures and relative size of the PQ pool as well as decrease in the electron transport to the PSI end electron acceptors and the probability of their reduction as well as an increase in the thermal dissipation. The effects were stronger in pea than in maize. The enhanced energy losses after high salt treatment in maize were mainly from the increase in the regulated energy losses (ΦNPQ), while in pea from the increase in non-regulated energy losses (ΦNO). The reduction in the electron transport from QA to the PSI end electron acceptors influenced PSI activity. Analysis of the P700 photooxidation and its decay kinetics revealed an influence of two PSI populations in pea after treatment with 150 mM and 200 mM NaCl, while in maize the negligible changes were registered only at 200 mM NaCl. The experimental results clearly show less salt tolerance of pea than maize.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Assessment of the Photosynthetic Apparatus Functions by Chlorophyll Fluorescence and P700 Absorbance in C3 and C4 Plants under Physiological Conditions and under Salt Stress

Stefanov

Rashkov

Аpostolova

2022

IJMS

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“…Salt stress reduced the Y(II) and qP of tomato seedling leaves, whereas 1– qP was increased, suggesting that excitation pressure increases in PSII (1– qP ) were attributable to a reduced capacity for CO 2 assimilation and reduced electron transfer efficiency [ 48 ]. Increases in Y(NO) that were observed in salt-stress-exposed plants ( Figure 2 ) suggested the disruption of the PSII supercomplex and/or damage to the D1 protein by excess light energy, which impacts its turnover [ 49 , 50 ]. By applying exogenous AsA, it was possible to mitigate the impact of salinity on Y(II), qP , and Y(NO).…”

Section: Discussionmentioning

confidence: 99%

The Protective Effect of Exogenous Ascorbic Acid on Photosystem Inhibition of Tomato Seedlings Induced by Salt Stress

Chen

Han

Cong

et al. 2023

Plants

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This study investigated the protective effects of exogenous ascorbic acid (AsA, 0.5 mmol·L−1) treatment on salt-induced photosystem inhibition in tomato seedlings under salt stress (NaCl, 100 mmol·L−1) conditions with and without the AsA inhibitor lycorine. Salt stress reduced the activities of photosystem II (PSII) and PSI. AsA treatment mitigated inhibition of the maximal photochemical efficiency of PSII (Fv/Fm), maximal P700 changes (Pm), the effective quantum yields of PSII and I [Y(II) and Y(I)], and non-photochemical quenching coefficient (NPQ) values under salt stress conditions both with and without lycorine. Moreover, AsA restored the balance of excitation energy between two photosystems (β/α-1) after disruption by salt stress, with or without lycorine. Treatment of the leaves of salt-stressed plants with AsA with or without lycorine increased the proportion of electron flux for photosynthetic carbon reduction [Je(PCR)] while decreasing the O2-dependent alternative electron flux [Ja(O2-dependent)]. AsA with or without lycorine further resulted in increases in the quantum yield of cyclic electron flow (CEF) around PSI [Y(CEF)] while increasing the expression of antioxidant and AsA–GSH cycle-related genes and elevating the ratio of reduced glutathione/oxidized glutathione (GSH/GSSG). Similarly, AsA treatment significantly decreased the levels of reactive oxygen species [superoxide anion (O2−) and hydrogen peroxide (H2O2)] in these plants. Together, these data indicate that AsA can alleviate salt-stress-induced inhibition of PSII and PSI in tomato seedlings by restoring the excitation energy balance between the photosystems, regulating the dissipation of excess light energy by CEF and NPQ, increasing photosynthetic electron flux, and enhancing the scavenging of reactive oxygen species, thereby enabling plants to better tolerate salt stress.

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“…[263][264][265] Biogenically synthesized spherical polycrystalline sulfur nanoparticles of 23 nm primed wheat plants were observed to show salt tolerance and enhanced photosynthetic pigments, antioxidant activity and nitrogen metabolism contributing to the improvement in growth and development of plants. 163 Foliar application of ZnO nanoparticles were observed to mitigate salt stress in tomato 266 and Pisum sativum 267 with improved plant physiological parameters, chlorophyll content and photosynthetic attributes in plants. Further foliar application of SiO 2 nanoparticles of 5-15 nm on sugarcane was observed to show promising results under cold stress by enhancing photosynthesis and improving photoprotection.…”

Section: Combatting Abiotic Stressmentioning

confidence: 99%

Nanomaterials for enhancing photosynthesis: interaction with plant photosystems and scope of nanobionics in agriculture

Mony

Kaur

Rookes

et al. 2022

Environ. Sci.: Nano

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Impact of foliar spray of zinc oxide nanoparticles on the photosynthesis of Pisum sativum L. under salt stress

Cited by 42 publications

References 68 publications

Assessment of the Photosynthetic Apparatus Functions by Chlorophyll Fluorescence and P700 Absorbance in C3 and C4 Plants under Physiological Conditions and under Salt Stress

Assessment of the Photosynthetic Apparatus Functions by Chlorophyll Fluorescence and P700 Absorbance in C3 and C4 Plants under Physiological Conditions and under Salt Stress

The Protective Effect of Exogenous Ascorbic Acid on Photosystem Inhibition of Tomato Seedlings Induced by Salt Stress

Nanomaterials for enhancing photosynthesis: interaction with plant photosystems and scope of nanobionics in agriculture

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