Effect of high light on canopy-level photosynthesis and leaf mesophyll ion flux in tomato

Babla, Mohammad; Tissue, David T.; Cazzonelli, Christopher I; Chen, Zhong‐Hua

doi:10.1007/s00425-020-03493-0

Cited by 16 publications

(10 citation statements)

References 92 publications

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“…According to Fuijuan and Cheng (2012), tomatoes grown at a light intensity of 1150 µmol•m −2 •s −1 yielded more than 150% the amount of fresh fruit compared to tomatoes grown at a light intensity of 368 µmol•m −2 •s −1 [20]. In tomatoes, the difference in photosynthesis efficiency between light intensities of 1000 µmol•m −2 •s −1 and 500 µmol•m −2 •s −1 is very large [21]. To reduce the damage caused by low light intensity, TiO 2 suspension was applied to the leaves of cherry tomatoes, as shown in Figure 2B.…”

Section: Discussionmentioning

confidence: 99%

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

Choi

2021

Horticulturae

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The rainy season occurs mainly from June to July in Korea, and this season causes insufficient ambient light intensity for the growth of cherry tomato in a greenhouse. Titanium dioxide (TiO2), as a photocatalyst, is known to affect photosynthesis in plants. This study was carried out to investigate the influence of TiO2 foliar spray application on the yield and photophysiological responses of cherry tomato under low ambient light intensity during the rainy season in a greenhouse. Cherry tomato plants were treated with 100 mg·L−1 TiO2 (T1) or 200 mg·L−1 TiO2 (T2) nanoparticle suspension on 26 June. The control group was not treated with TiO2. In the O–J phase of the OJIP transient under a cloudy day (2 July), the slope in the control and T1 groups rose more sharply than that in the T2 group. Conversely, on a clear day (10 July), the J–I phase of the T2 group sharply increased compared to that of the control and T1 groups. On a cloudy day with low ambient light intensity, the rate of electron transport flux from QA to QB per photosystem II reaction center (ET0/RC) and carbon dioxide (CO2) fixation of TiO2-treated plants were increased compared to those of the control. However, on a clear day of high light intensity, the ET0/RC and CO2 fixation of the T2 group were lower than those of the control and Tl groups. The yield of fruit was increased in the T1 group over that in other treatments. TiO2 treatment reduced the size of the fruit and delayed the ripening time, but greatly increased the fruit hardness. These results suggest that setting the concentration and supply amount of TiO2 nanoparticles suitable for various environmental conditions should be prioritized in order to improve the effect of TiO2 nanoparticles in tomato cultivation.

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Section: Discussionmentioning

confidence: 99%

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

Choi

2021

Horticulturae

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“…A portable LI-6400XT infrared gas analyser (Li-Cor Inc., Lincoln, NE, USA) was used to conduct the instantaneous steady-state leaf gas exchange measurements from fully expanded top canopy leaves, according to (Babla et al 2020). Net CO 2 assimilation (A, µmol m −2 s −1 ), stomatal conductance (g s , mol m −2 s −1 ), water use efficiency (WUE), defined as the ratio of A to g s , intercellular CO 2 concentration (C i , µmol mol −1 ), and transpiration (T r , mmol m −2 s −1 ) were determined fortnightly.…”

Section: Gas Exchange Measurementsmentioning

confidence: 99%

“…Leaf gas exchange and photosynthesis are key indicators of plant health and yield potential (Babla et al 2020). Table 4 shows the comparisons of five gas exchange parameters (A, gs, WUE, VpdL, and Trmmol) between plants under different rates of CT1 and CT2 treatments from Week 7 to Week 11 of treatment in the greenhouse.…”

Section: Leaf Gas Exchangementioning

confidence: 99%

Coal tailings as a soil conditioner: evaluation of tailing properties and effect on tomato plants

et al. 2022

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The global coal industry yields a vast amount of tailings waste, and the utilisation of these tailings necessitates innovative efforts contributing to the United Nations Sustainable Development Goals. One of such novel initiatives is to reuse coal tailings (CT) safely, ecofriendly, and cost-effectively in agroecosystems as a soil conditioner to enhance the productivity of lands. This study aimed to evaluate the potential utilisation of coal tailings waste in the soil amelioration to improve plant performance. The physico–chemical characteristics of coal tailings from two Australian mining sites (CT1 and CT2) showed that the tailings samples are alkaline with loamy and loamy sand textures, respectively. The tailings have ~ 3% of macronutrients, high carbon (C), and low heavy metals and metalloids (As, Cd, Se, Cu, Zn, and Pb). The germination rate of tomato seeds was improved in the low-rate CT treatment. Greenhouse tomato plants exhibited an increase in leaf’s K, Ca, and Mg contents in CT1 and CT2 treatments. More importantly, the CT treatment-induced accumulation of heavy metals in plants was mostly insignificant in both CT treatments. Therefore, we highlight the potential application of coal tailings as a soil conditioner because of the beneficial effect of improved carbon and nutrients (N, P, K, Mg, and Ca) in tomato leaves. Further amendment of the coal tailings should focus on the adjustment of pH and the addition of other beneficial materials for the improvement of soil properties for crops in both the greenhouse and the field.

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“…PHY-A and B2 act antagonistically in far-red light, activating glyoxylate cycle enzyme activity to regulate starch synthesis in germination (Lin 2000;Paik and Huq 2019), and then the interaction of PHY-B and CRY2 control hypocotyl elongation (Más et al 2000). PHOTs promote plant growth responding to blue light under shading and regulate stomata and chloroplast movement, leaf position and flattening interacting with PHYs (Christie and Briggs 2001;Babla et al 2020). UVR8 represses hypocotyl growth by interacted COP1, enabling the leaf area and morphology to be adapted to UV-B stress through the upregulation of HY5 (Wargent et al 2009).…”

Section: Photoreceptors and Light Response Genes For Crop Adapting To...mentioning

confidence: 99%

“…Light is known as one of the core mediators of phytohormone biosynthesis and controls their distribution to promote fruit cell division, expansion, and elongation (McAtee et al 2013;Babla et al 2020). Fruit growth and final fruit size are determined by cell division (cell number) and expansion (cell size), which are a function of the interactions between phytohormone signaling and carbon distribution (Azzi et al 2015).…”

Section: Regulation Of Key Genes In Fruit Development and Their Poten...mentioning

confidence: 99%

Light-altering cover materials and sustainable greenhouse production of vegetables: a review

Maier

Chavan

et al. 2021

Plant Growth Regul

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Greenhouse horticulture (protected cropping) is essential in meeting increasing global food demand under climate change scenarios by ensuring sustainability, efficiency, and productivity. Recent advances in cover materials and photovoltaic technologies have been widely examined in greenhouses to improve light transmission and solar energy capture with promoting energy-saving. We review the studies on advanced greenhouse cover materials with variable light transmittance, the effects of which on leaf photosynthesis, physiology, and yield. We provide insights into the potential key biological processes of crops responding to these light changes, specifically light receptors, signal transduction, nutrient biosynthesis pathways (e.g., carotenoids, antioxidant compounds) during fruit development and ripening. A better understanding of greenhouse cover materials with a focus towards energy-efficient cover materials equipped in greenhouse is an opportunity for better yield and higher nutrient products production in vegetables in response to global climate challenges. Interdisciplinary research on the application of novel cover materials in greenhouses and biological investigation of light-induced physiology and nutrient formation in vegetables may promote yield and health attributes for protected cultivation of vegetables with energy use efficiency.

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Effect of high light on canopy-level photosynthesis and leaf mesophyll ion flux in tomato

Cited by 16 publications

References 92 publications

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

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

Coal tailings as a soil conditioner: evaluation of tailing properties and effect on tomato plants

Light-altering cover materials and sustainable greenhouse production of vegetables: a review

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