Effect of TiO2 Nanoparticles on the Yield and Photophysiological Responses of Cherry Tomatoes during the Rainy Season

Choi, Hyo-Gil

doi:10.3390/horticulturae7120563

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…At 75 µmol m −2 s −1 PPFD during cultivation, TiO 2 nanoparticle spray (100 μmol L −1 ) tended to sustain higher Φ PSII and rETR values. In accordance, it has been shown that foliar spraying of 100 mg L −1 of TiO 2 nanoparticles under low light intensity increased the rate of photosynthesis and yield in cherry tomato plants 30 .…”

Section: Discussionmentioning

confidence: 54%

“…In the study of Hossein et al 29 , foliar application of 2.5 mg L −1 Ti, chlorophyll pigments (chlorophyll a, b, carotenoid), plant biomass, photochemical efficiency of photosystem II (F v /F m ) and electron transfer rate (ETR) of soybean improve under natural light conditions. Choi et al 30 reported that TiO 2 foliar application affected CO 2 absorption and chlorophyll fluorescence of cherry tomato plants. Foliar spraying of TiO 2 during cloudy days with low light intensity increased the electron transfer rate from Q A to Q B in the reaction center of photosystem II (ET 0 /RC) and carbon dioxide (CO 2 ) stabilization.…”

Section: Introductionmentioning

confidence: 99%

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Plants exposed to titanium dioxide nanoparticles acquired contrasting photosynthetic and morphological strategies depending on the growing light intensity: a case study in radish

Vatankhah

Aliniaeifard

Moosavi-Nezhad

et al. 2023

Sci Rep

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Due to the photocatalytic property of titanium dioxide (TiO2), its application may be dependent on the growing light environment. In this study, radish plants were cultivated under four light intensities (75, 150, 300, and 600 μmol m−2 s−1 photosynthetic photon flux density, PPFD), and were weekly sprayed (three times in total) with TiO2 nanoparticles at different concentrations (0, 50, and 100 μmol L−1). Based on the obtained results, plants used two contrasting strategies depending on the growing PPFD. In the first strategy, as a result of exposure to high PPFD, plants limited their leaf area and send the biomass towards the underground parts to limit light-absorbing surface area, which was confirmed by thicker leaves (lower specific leaf area). TiO2 further improved the allocation of biomass to the underground parts when plants were exposed to higher PPFDs. In the second strategy, plants dissipated the absorbed light energy into the heat (NPQ) to protect the photosynthetic apparatus from high energy input due to carbohydrate and carotenoid accumulation as a result of exposure to higher PPFDs or TiO2 concentrations. TiO2 nanoparticle application up-regulated photosynthetic functionality under low, while down-regulated it under high PPFD. The best light use efficiency was noted at 300 m−2 s−1 PPFD, while TiO2 nanoparticle spray stimulated light use efficiency at 75 m−2 s−1 PPFD. In conclusion, TiO2 nanoparticle spray promotes plant growth and productivity, and this response is magnified as cultivation light intensity becomes limited.

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Section: Discussionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Plants exposed to titanium dioxide nanoparticles acquired contrasting photosynthetic and morphological strategies depending on the growing light intensity: a case study in radish

Vatankhah

Aliniaeifard

Moosavi-Nezhad

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…There are various studies that have shown increases in the yield of tomato plants after TiO2 treatment. For instance, the yield of tomato plants was reported to increase after 100 mg L -1 by foliar spray application (Choi, 2021). In another study, the positive effect of TiO2 treatment on the yield of tomato plant by foliar application was reported (Parveen and Siddique, 2022).…”

Section: Discussionmentioning

confidence: 96%

Effects of Tio2 Nano-Priming on Tomato Seed Germination and Plant Development

2023

THE JAPS

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The effect of nano-TiO2 on seed germination and plant development as a priming agent has not been thoroughly studied. This study aimed to evaluate the effect of TiO2 nano-priming on seed germination, plant growth and yield of tomato plants relying on experiments that have been conducted both under laboratory and greenhouse conditions. During the laboratory experiments, the seed germination, seed vigor index and water uptake of seeds were determined after 5, 10, 50 and 100 mg L -1 of TiO2 nano-priming while hydropriming was used as control. The biomass of tomato seedling was increased the most for the 10 mg L -1 TiO2 nano-priming condition. With follow-up experiments, the effect of 10 mg L -1 TiO2 nano-priming was investigated further under greenhouse conditions, where hydropriming was also used as control. The physiological traits of tomato plants, like chlorophyll content, stomatal conductance and transpiration rate were increased by TiO2 nano-priming treatment. Although the photosynthesis rate was boosted by nano-priming, the yield was not affected. The application of 10 mg L -1 TiO2 as nano-priming agent increased plant development and chlorophyll content under both laboratory and greenhouse conditions without translocation in the plant, which is one of the most important concerts of using nanoparticles in plant production.

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“…The ChlF induction curve with fast chlorophyll fluorescence induction curve (O-J-I-P) steps obtained from different plants can show a significant change under nanoparticles treatment [ 32 , 60 ]. The mechanisms underlying the regulation of photosynthesis by nanoparticles are related to decreasing or enhancing the chlorophyll content and electron transport rate, influencing the performance of PSII, and CO 2 assimilation, causing damages to chloroplast components, broadening the chloroplast photoabsorption spectrum, regulating Hill reaction and Calvin cycle, changing the activity of key photosynthetic enzymes like Rubisco, moreover, light harvesting NPs (e.g.…”

Section: Discussionmentioning

confidence: 99%

Leaf chlorophyll fluorescence and reflectance of oakleaf lettuce exposed to metal and metal(oid) oxide nanoparticles

et al. 2023

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Background Most nanoparticles (NPs) have a significant impact on the structure and function of the plant photosynthetic apparatus. However, their spectrum of action varies significantly, from beneficial stimulation to toxicity, depending on the type of NPs, the concentration used and plant genotypic diversity. Photosynthetic performance can be assessed through chlorophyll a fluorescence (ChlF) measurements. These data allow to indirectly obtain detailed information about primary light reactions, thylakoid electron transport reactions, dark enzymatic stroma reactions, slow regulatory processes, processes at the pigment level. It makes possible, together with leaf reflectance performance, to evaluate photosynthesis sensitivity to stress stimuli. Results We investigated effects of different metal and metal(oid) oxide nanoparticles on photosynthesis of oakleaf lettuce seedlings by monitoring the chlorophyll a fluorescence light radiation and reflectance from the leaves. Observations of ChlF parameters and changes in leaf morphology were carried out for 9 days in two-day intervals. Spectrophotometric studies were performed at 9th day. Suspensions of NPs with the following concentrations were used: 6% TiO2, SiO2; 3% CeO2, SnO2, Fe2O3; 0.004% (40 ppm) Ag; 0.002% (20 ppm) Au. Nanoparticles were applied directly on the leaves which caused small symptoms of chlorosis, necrosis and leaf veins deformation, but the plants fully recovered to the initial morphological state at 9th day. Leaf reflectance analysis showed an increase in FRI for SiO2-NPs and CeO2-NPs treatments and ARI2 for Fe2O3, however, WBI and PRI coefficients for the latter nanoparticle were lower than in control. Chlorophyll a fluorescence parameters have changed due to NPs treatment. Fe2O3-NPs caused an increase in Fv/F0, PIABS, ET0/RC, DI0/RC, ABS/RC in different time points in comparison to control, also Ag, Au and SnO2 treatment caused an increase in Fv/F0, PIABS or ET0/RC, respectively. On the other hand, TiO2-NPs caused a decrease in Fv/Fm and Fv/F0 parameters, but an increase in DI0/RC value was observed. SnO2-NPs decreased PIABS, but increased ET0/RC than compared to control. Nanoparticles affected the shape of the O-J-I-P curve in slight manner, however, further analyses showed unfavourable changes within the PSII antenna, manifested by a slowdown in the transport of electrons between the Chl molecules of the light-harvesting complex II and the active center of PSII due to NPs application. Conclusion Changes in ChlF parameters and leaf reflectance values clearly proved the significant influence of NPs on the functioning of the photosynthetic apparatus, especially right after NPs application. The nature of these changes was strictly depended on the type of nanoparticles and sometimes underwent very significant changes over time. The greatest changes in ChlF parameters were caused by Fe2O3 nanoparticles, followed by TiO2-NPs. After slight response of O-J-I-P curves to treatment of the plants with NPs the course of the light phase of photosynthesis stabilized and at 9th day were comparable to the control curve.

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Effect of TiO2 Nanoparticles on the Yield and Photophysiological Responses of Cherry Tomatoes during the Rainy Season

Cited by 9 publications

References 26 publications

Plants exposed to titanium dioxide nanoparticles acquired contrasting photosynthetic and morphological strategies depending on the growing light intensity: a case study in radish

Plants exposed to titanium dioxide nanoparticles acquired contrasting photosynthetic and morphological strategies depending on the growing light intensity: a case study in radish

Effects of Tio2 Nano-Priming on Tomato Seed Germination and Plant Development

Leaf chlorophyll fluorescence and reflectance of oakleaf lettuce exposed to metal and metal(oid) oxide nanoparticles

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