Optimization of Photosynthetic Photon Flux Density and Root-Zone Temperature for Enhancing Secondary Metabolite Accumulation and Production of Coriander in Plant Factory

Nguyen, Duc Trung; Lu, Na; Kagawa, Natsuko; Takagaki, Michiko

doi:10.3390/agronomy9050224

Cited by 30 publications

(31 citation statements)

References 40 publications

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“…Increased shoot dry weight and invariable shoot fresh weight indicated that the water content of the shoot in runner plants was decreased with an increase of light intensity. This agreed with the result of Nguyen et al [34], which reported that the water content in both the stems and leaves of coriander was decreased with an increase of light intensity. The root to shoot ratio of runner plants increased with increasing light intensity ( Figure 6G).…”

Section: Plant Growth and Photon Yield Of Biomass Of Rooted Runner Plsupporting

confidence: 93%

Effect of Light Intensity on Rooting and Growth of Hydroponic Strawberry Runner Plants in a LED Plant Factory

Zheng

et al. 2019

Agronomy

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To rapidly produce strawberry (Fragaria × ananassa Duch. cv. Benihoppe) transplants from cuttings, suitable light intensities for unrooted runner plants at the rooting stage and rooted runner plants at the seedling stage were determined in a plant factory under LED lighting. At the rooting stage, unrooted runner plants at the 3-leaf stage were hydroponically rooted for 6 days under light intensity of 30, 90, 150, and 210 µmol m −2 s −1 , respectively. At the seedling stage, rooted runner plants were hydroponically grown for 18 days under light intensity of 90, 180, 270, and 360 µmol m −2 s −1 , respectively. The tube LED lights consisting of white and red LED chips were used as sole light source, and photoperiod was controlled as 16 h d −1 . The results showed that the maximum root number (7.7) and longest root length (14.8 cm) of the runner plants were found under 90 µmol m −2 s −1 at the rooting stage. Photosynthetic activity in runner plant leaves under 90 µmol m −2 s −1 were higher than that under 30, 150, and 210 µmol m −2 s −1 . Higher light intensity at the range of 90-270 µmol m −2 s −1 increased the stomatal conductance of newly formed leaves of rooted runner plants, thus improving the net photosynthetic rate and growth of rooted runner plants at the seedling stage. The crown diameter, shoot and root dry weights, and root to shoot ratio of rooted runner plants increased by 9.7%, 38.8%, 106.1%, and 48.7%, respectively, when the light intensity increased from 90 to 270 µmol m −2 s −1 . However, there was no further improvement of runner plant growth under 360 µmol m −2 s −1 . Furthermore, no significant difference of increased dry biomass per mole of photons delivered was found between 180 and 270 µmol m −2 s −1 . In consideration of transplant quality and economic balance, light intensity of 90 µmol m −2 s −1 at the rooting stage and 270 µmol m −2 s −1 at the seedling stage were suggested for rapidly producing hydroponic strawberry transplants based on unrooted runner plants in the LED plant factory.

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Section: Plant Growth and Photon Yield Of Biomass Of Rooted Runner Plsupporting

confidence: 93%

Effect of Light Intensity on Rooting and Growth of Hydroponic Strawberry Runner Plants in a LED Plant Factory

Zheng

et al. 2019

Agronomy

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“…Plants cope with oxidative stress by synthesizing antioxidant metabolites, such as flavonoids and phenolic acid compounds [38]. This finding was in agreement with our previous study, which showed that TPC is enhanced under RZTs of 20°C and 30 • C in comparison with 25 • C [19]. In the present research, the TPC and antioxidant capacity of the plants under treatment 15-6 was enhanced while the biomass under this condition did not reduce in comparison with the control treatment.…”

Section: Pigments and Secondary Metabolite Accumulationsupporting

confidence: 93%

“…Measurement of CA and QR contents was conducted using a high-performance liquid chromatography (HPLC) (Shimadzu, Kyoto, Japan) equipped with a mass spectrometry (MS) (Shimadzu, Kyoto, Japan) as described previously [19]. Dried leaves and stems (30 • C, 4 weeks) were chopped and weighted accurately (15.00-15.50 mg).…”

Section: Chlorogenic Acid and Rutin Contentmentioning

confidence: 99%

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Short-Term Root-Zone Temperature Treatment Enhanced the Accumulation of Secondary Metabolites of Hydroponic Coriander (Coriandrum sativum L.) Grown in a Plant Factory

Nguyen

Kagawa

et al. 2020

Agronomy

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The demand for high-nutrient and fresh vegetables, including coriander, has been growing rapidly. A plant factory with artificial lighting enables the application or suppression of stress conditions to plants for producing high-quality vegetables. This study aimed to determine a suitable root-zone temperature (RZT) treatment for enhancing the biomass and secondary metabolite content of hydroponic coriander plants. The combination of a mid-RZT (25 °C) pre-treatment with low (15 °C or 20 °C) or high (30 °C or 35 °C) RZT for a short period (3 or 6 days) was applied to the plants before harvesting. The fresh weights of the coriander plants were reduced under RZT stress. By contrast, the content of secondary metabolites, including ascorbic acid, carotenoids, phenolic compounds, chlorogenic acid, and the antioxidant capacity of the plants were enhanced by the combination of the lowest or highest RZT (15 °C or 35 °C) and the longer stress period (6 days). Growing coriander under an RZT of 30 °C for 6 days can produce large amounts of bioactive compounds and water, whereas growing coriander at an RZT of 15 °C for 6 days can produce high dry biomass and secondary metabolite content.

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“…In addition, the rhythm of these processes can change periodically during a single day. Previous lighting strategies have ignored the effects of photoperiod on circadian rhythm, missing the opportunity to use the circadian rhythm to benefit the growth of crops in PFALs [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Both Multi-Segment Light Intensity and Extended Photoperiod Lighting Strategies, with the Same Daily Light Integral, Promoted Lactuca sativa L. Growth and Photosynthesis

et al. 2019

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With the rise of plant factories around the world, more and more crops are cultivated under artificial light. Studies on effects of lighting strategies on plant growth, such as different light intensities, photoperiods, and their combinations, have been widely conducted. However, research on application of multi-segment light strategies and associated plant growth mechanisms is still relatively lacking. In the present study, two lighting strategies, multi-segment light intensity and extended photoperiod, were compared with a constant light intensity with a 12 h light/12 h dark cycle and the same daily light integral (DLI). Both lighting strategies promoted plant growth but acted via different mechanisms. The multi-segment light intensity lighting strategy promoted plant growth by decreasing non-photochemical quenching (NPQ) of the excited state of chlorophyll and increasing the quantum yield of PSII electron transport (PhiPSII), quantum yield of the carboxylation rate (PhiCO2), and photochemical quenching (qP), also taking advantage of the circadian rhythm. The extended photoperiod lighting strategy promoted plant growth by compensating for weak light stress and increasing light-use efficiency by increasing chlorophyll content under weak light conditions.

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Optimization of Photosynthetic Photon Flux Density and Root-Zone Temperature for Enhancing Secondary Metabolite Accumulation and Production of Coriander in Plant Factory

Cited by 30 publications

References 40 publications

Effect of Light Intensity on Rooting and Growth of Hydroponic Strawberry Runner Plants in a LED Plant Factory

Effect of Light Intensity on Rooting and Growth of Hydroponic Strawberry Runner Plants in a LED Plant Factory

Short-Term Root-Zone Temperature Treatment Enhanced the Accumulation of Secondary Metabolites of Hydroponic Coriander (Coriandrum sativum L.) Grown in a Plant Factory

Both Multi-Segment Light Intensity and Extended Photoperiod Lighting Strategies, with the Same Daily Light Integral, Promoted Lactuca sativa L. Growth and Photosynthesis

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