Supplemental LED lighting affects the dynamics of tomato fruit growth and composition

Fanwoua, Julienne; Vercambre, Gilles; Buck-Sorlin, Gerhard; Dieleman, J.A.; Visser, Pieter de; Génard, Michel

doi:10.1016/j.scienta.2019.108571

Cited by 32 publications

(25 citation statements)

References 46 publications

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“…Similar results in terms of the stem development were demonstrated for cucumbers, sweet basil, and tomatoes when a combination of blue, green, and red LEDs (Särkkä et al, 2017); blue, yellow, and red LEDs (Carvalho et al, 2016); or only green LEDs combined with daylight (Snowden et al, 2016) was used, respectively. Our yield data, however, are different to others, who have reported that a LED lighting with an emission spectrum that is optimized for chlorophyll absorption (blue and red) produces similar or even less yield than HPS lighting (Dueck et al, 2011;Gomez et al, 2013;Fanwoua et al, 2019). Although .…”

Section: Plant Growth and Yield Under Different Supplementary Lightingscontrasting

confidence: 99%

Increase of Yield, Lycopene, and Lutein Content in Tomatoes Grown Under Continuous PAR Spectrum LED Lighting

et al. 2021

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Light emitting diodes (LEDs) are an energy efficient alternative to high-pressure sodium (HPS) lighting in tomato cultivation. In the past years, we have learned a lot about the effect of red and blue LEDs on plant growth and yield of tomatoes. From previous studies, we know that plants absorb and utilize most of the visible spectrum for photosynthesis. This part of the spectrum is referred to as the photosynthetically active radiation (PAR). We designed a LED fixture with an emission spectrum that partially matches the range of 400 to 700 nm and thus partially covers the absorption spectrum of photosynthetic pigments in tomato leaves. Tomato plants grown under this fixture were significantly taller and produced a higher fruit yield (14%) than plants grown under HPS lighting. There was no difference in the number of leaves and trusses, leaf area, stem diameter, the electron transport rate, and the normalized difference vegetation index. Lycopene and lutein contents in tomatoes were 18% and 142% higher when they were exposed to the LED fixture. However, the ß-carotene content was not different between the light treatments. Transpiration rate under LED was significantly lower (40%), while the light use efficiency (LUE) was significantly higher (19%) compared to HPS lighting. These data show that an LED fixture with an emission spectrum covering the entire PAR range can improve LUE, yields, and content of secondary metabolites in tomatoes compared to HPS lighting.

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Section: Plant Growth and Yield Under Different Supplementary Lightingscontrasting

confidence: 99%

Increase of Yield, Lycopene, and Lutein Content in Tomatoes Grown Under Continuous PAR Spectrum LED Lighting

et al. 2021

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“…5), which was also reported by Fanwoua et al . (2019). Indeed, after the fruit switched to hexose‐accumulation, we observed that FR radiation increased the expression of sucrose synthase and invertases in the fruits (Fig.…”

Section: Discussionmentioning

confidence: 99%

Far‐red radiation stimulates dry mass partitioning to fruits by increasing fruit sink strength in tomato

Ocaña

Choe

et al. 2020

New Phytologist

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Far-red (FR) light promotes fruit growth by increasing dry mass partitioning to fruits, but the mechanism behind this is unknown. We hypothesise that it is due to an increased fruit sink strength as FR radiation enhances sugar transportation and metabolism. Tomato plants were grown with or without 50-80 μmol m −2 s −1 of FR radiation added to a common background 150-170 μmol m −2 s −1 red + blue light-emitting diode lighting. Potential fruit growth, achieved by pruning each truss to one remaining fruit, was measured to quantify fruit sink strength. Model simulation was conducted to test whether the measured fruit sink strength quantitatively explained the FR effect on dry mass partitioning. Starch, sucrose, fructose and glucose content were measured. Expression levels of key genes involved in sugar transportation and metabolism were determined. FR radiation increased fruit sink strength by 38%, which, in model simulation, led to an increased dry mass partitioned to fruits that quantitatively agreed very well with measured partitioning. FR radiation increased fruit sugar concentration and upregulated the expression of genes associated with both sugar transportation and metabolism. This is the first study to demonstrate that FR radiation stimulates dry mass partitioning to fruits mainly by increasing fruit sink strength via simultaneous upregulation of sugar transportation and metabolism.

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“…Similarly, higher total plant dry mass and higher fruit yield in tomato grown under additional FR radiation were reported by Zhang et al (2019b). In another study on tomatoes, the R and B + FR light treatment increased the production of soluble sugar, increased the dilution by soluble and storage compounds, and water reduction dilution, leading to a strong increase in glucose, fructose and sucrose concentration in the pericarp (Fanwoua et al, 2019). However, neither study provided sufficient insights on how additional FR increases fruit growth in the fruiting stage of the crop, which is a key step in understanding the FR induced yield improvement in fruit crops like tomatoes.…”

Section: Fr and Yield Qualitymentioning

confidence: 54%

The role of far-red light (FR) in photomorphogenesis and its use in greenhouse plant production

Kump

2020

AAS

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<p>Light energy is one of the most important factors regulating the growth and development of plants. In greenhouses and other controlled- environments in which the natural radiation intensities are often low, plant production relies on supplementary lighting to optimize the photosynthesis, increase production levels, and enable year-round production. For a long time, the research related to artificial lighting sources focused on the optimization of the efficiency of use for photosynthesis. The quality of light in plant production has been widely addressed only recently with the development of advanced LED technology that is energy efficient and enables the control of the spectral composition of light. Red and far-red light are sensed by the phytochromes that trigger several morphological and developmental processes that impact productivity and yield quality. Thus, to efficiently exploit all the advantages of LEDs and to develop LED arrays for specific plant applications, it is essential to understand thoroughly how light quality influences plant growth and development. This paper presents an overview of the recent developments in light quality manipulation, focusing on far-red light and the R: FR ratio, to improve yield and quality of products and to manage plant architecture and flowering in vegetable and ornamental horticulture.</p>

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Supplemental LED lighting affects the dynamics of tomato fruit growth and composition

Cited by 32 publications

References 46 publications

Increase of Yield, Lycopene, and Lutein Content in Tomatoes Grown Under Continuous PAR Spectrum LED Lighting

Increase of Yield, Lycopene, and Lutein Content in Tomatoes Grown Under Continuous PAR Spectrum LED Lighting

Far‐red radiation stimulates dry mass partitioning to fruits by increasing fruit sink strength in tomato

The role of far-red light (FR) in photomorphogenesis and its use in greenhouse plant production

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