Magnetic field effects on the magnetic properties, germination, chlorophyll fluorescence, and nutrient content of barley (Hordeum vulgare L.)

Ercan, I.; Tombuloğlu, Hüseyin; Alqahtani, Noha; Alotaibi, Bayan; Bamhrez, Muruj; Alshumrani, Raghdah; Özçeli̇k, Sezen; Kayed, Tarek S.

doi:10.1016/j.plaphy.2021.11.033

Cited by 29 publications

(35 citation statements)

References 51 publications

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“…Several interesting papers have shed light on the effect of different nanoparticles types on photosynthetic genes that in turn influence global photosynthetic activity [20,84,85]. Our results, together with bibliographic information, highlight a close connection between Fe 3 O 4 nanoparticles and photosystems, especially with PSI.…”

Section: Ojip Transientsupporting

confidence: 62%

Improved photosynthetic performance induced by Fe3O4 nanoparticles

Torres

Diz

Lagorio

2022

Photochem Photobiol Sci

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Interaction between 11 nm-sized magnetite nanoparticles and Cichorium intybus plants was studied in this work. In particular, the effect of these nanoparticles on the photosynthesis electron chain was carefully analysed. Magnetite nanoparticles were synthesised and physically characterised by Transmission electron microscopy (TEM), Scanning electron microscopy (SEM)), Energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), Magnetic hysteresis cycles and UV-visible spectroscopy. Suspensions of the obtained magnetite nanoparticles with different concentrations (10-1000 ppm) were sprayed over chicory leaves and their photosynthetic activity was evaluated using chlorophyll fluorescence techniques. The study was complemented with the determination of pigment concentration and spectral reflectance indices. The whole set of results was compared to those obtained for control (non-treated) plants. Magnetite nanoparticles caused an increment in the content of Chlorophyll a (up to 36%) and Chlorophyll b (up to 41%). The ratio Chlorophyll/ Carotenoids significantly increased (up to 29%) and the quotient Chlorophyll a/b remained relatively constant, except for a sharp increase (19%) at 100 ppm. The reflectance index that best manifested the improvement in chlorophyll content was the modified Normalised Difference Vegetation Index (mNDI), with a maximum increase of about 35%. Electronic transport fluxes were favoured and the photosynthetic parameters derived from Kautsky's kinetics were improved. An optimal concentration of nanoparticles (100 ppm) for the most beneficial effects on photosynthesis was identified. For this dose, the probability by which a trapped electron in PSII was transferred up to PSI acceptors (Φ RE0 ) was doubled and the parameter that quantifies the energy conservation of photons absorbed by PSII up to the reduction of PSI acceptors ( PI ABS total ), augmented five times. The fraction of absorbed energy used for photosynthesis increased to 86% and the energy lost as heat by the non-photochemical quenching mechanism was reduced to 31%. Beyond 100 ppm, photosynthetic parameters declined but remained above the values of the control.

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Section: Ojip Transientsupporting

confidence: 62%

Improved photosynthetic performance induced by Fe3O4 nanoparticles

Torres

Diz

Lagorio

2022

Photochem Photobiol Sci

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“…However, the total acidity (%) of fruits decreased in comparison with that of the control; see Figure 6 B. This increase in TSS/Acid ratio may be due to the increase in ion mobility and ion uptake, which was previously improved under magnetic iron and in turn leads to a better photosynthesis rates in plants [ 47 ].…”

Section: Resultsmentioning

confidence: 96%

“…The increase in TSS percentage might be due to increasing ion mobility and ion uptake of magnetic iron treatments, which also leads to better photosynthesis stimulation in plants and an improvement of fruit characteristics [ 15 ]. Moreover, magnetic iron can change water properties, and significantly increase leaf total chlorophyll [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Iron–Improved Growth, Leaf Chemical Content, Yield, and Fruit Quality of Chinese Mandarin Trees Grown under Soil Salinity Stress

Alharbi

Alshallash

Hamdy

et al. 2022

Plants

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Chinese mandarin fruits are an inexpensive and rich source of vitamin C. They have potential benefits in treating acute respiratory infections and mitigating inflammation in critical patients with COVID-19. In Egypt, citrus is the most important fruit tree but is sensitive to salinity stress, resulting in poor vegetative tree growth and reductions in productivity and fruit quality. Magnetic iron has emerged as a promising approach in the citrus tree industry, since it improves vegetative growth, yield, and fruit quality and alleviates salinity stress in Chinese mandarin trees grown in soils suffering from high salt stress. This research is aimed at studying the influence of adding magnetic iron (as soil treatment) on tree canopy growth, yield, and fruit quality of ‘Chinese’ mandarin trees. Therefore, the treatments were as follows: 0, 250, 500, and or 750 g of magnetic iron.tree−1. Our results indicated that all applications of magnetic iron significantly improved tree canopy volume, leaf total chlorophyll, relative water content, yield (kg.tree−1), and the fruit physical and chemical characteristics of Chinese mandarin. In contrast, leaf Na and Cl content, (%), proline, and total phenolic content were decreased by magnetic iron soil treatments. In respect to vegetative growth, our results indicated that adding magnetic iron at the concentration 750 g.tree−1 caused the best values of tree canopy volume. A similar trend was noticed regarding yield. The increase in yield attained was nearly 19%; the best values were obtained when magnetic iron were used at 750 g.tree−1. In conclusion, the application of magnetic iron can lead to improved fruit production and fruit quality of Chinese mandarin trees grown in salinity stress conditions.

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“…Buchachenko et al reported that applying 80 mT static magnetic field affected enzymatic ATP production [ 105 ]. Recently, Ercan et al showed that exposure to magnetic fields (20, 42, 125 and 250 mT) can affect the magnetic properties, germination, chlorophyll fluorescence and nutrient content of barley ( Hordeum vulgare L.) [ 106 ]. Further, it is observed that exposure to magnetic fields (10 and 30 mT) can deteriorate the antioxidant defence system of plant cells [ 107 ].…”

Section: Magnetosensitivity In Biologymentioning

confidence: 99%

Magnetic field effects in biology from the perspective of the radical pair mechanism

Zadeh-Haghighi

Simon

2022

J. R. Soc. Interface.

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Hundreds of studies have found that weak magnetic fields can significantly influence various biological systems. However, the underlying mechanisms behind these phenomena remain elusive. Remarkably, the magnetic energies implicated in these effects are much smaller than thermal energies. Here, we review these observations, and we suggest an explanation based on the radical pair mechanism, which involves the quantum dynamics of the electron and nuclear spins of transient radical molecules. While the radical pair mechanism has been studied in detail in the context of avian magnetoreception, the studies reviewed here show that magnetosensitivity is widespread throughout biology. We review magnetic field effects on various physiological functions, discussing static, hypomagnetic and oscillating magnetic fields, as well as isotope effects. We then review the radical pair mechanism as a potential unifying model for the described magnetic field effects, and we discuss plausible candidate molecules for the radical pairs. We review recent studies proposing that the radical pair mechanism provides explanations for isotope effects in xenon anaesthesia and lithium treatment of hyperactivity, magnetic field effects on the circadian clock, and hypomagnetic field effects on neurogenesis and microtubule assembly. We conclude by discussing future lines of investigation in this exciting new area of quantum biology.

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Magnetic field effects on the magnetic properties, germination, chlorophyll fluorescence, and nutrient content of barley (Hordeum vulgare L.)

Cited by 29 publications

References 51 publications

Improved photosynthetic performance induced by Fe3O4 nanoparticles

Improved photosynthetic performance induced by Fe3O4 nanoparticles

Magnetic Iron–Improved Growth, Leaf Chemical Content, Yield, and Fruit Quality of Chinese Mandarin Trees Grown under Soil Salinity Stress

Magnetic field effects in biology from the perspective of the radical pair mechanism

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