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Lejeune P, Fratamico A, Bouché F, Huerga-Fernández S, Tocquin P, Périlleux C. LED color gradient as a new screening tool for rapid phenotyping of plant responses to light quality. Gigascience 2022; 11:6515743. [PMID: 35084034 PMCID: PMC8848316 DOI: 10.1093/gigascience/giab101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/10/2021] [Accepted: 12/15/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The increasing demand for local food production is fueling high interest in the development of controlled environment agriculture. In particular, LED technology brings energy-saving advantages together with the possibility of manipulating plant phenotypes through light quality control. However, optimizing light quality is required for each cultivated plant and specific purpose. FINDINGS This article shows that the combination of LED gradient set-ups with imaging-based non-destructive plant phenotyping constitutes an interesting new screening tool with the potential to improve speed, logistics, and information output. To validate this concept, an experiment was performed to evaluate the effects of a complete range of red:blue ratios on 7 plant species: Arabidopsis thaliana, Brachypodium distachyon, Euphorbia peplus, Ocimum basilicum, Oryza sativa, Solanum lycopersicum, and Setaria viridis. Plants were exposed during 30 days to the light gradient and showed significant, but species-dependent, responses in terms of dimension, shape, and color. A time-series analysis of phenotypic descriptors highlighted growth changes but also transient responses of plant shapes to the red:blue ratio. CONCLUSION This approach, which generated a large reusable dataset, can be adapted for addressing specific needs in crop production or fundamental questions in photobiology.
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Affiliation(s)
- Pierre Lejeune
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
| | - Anthony Fratamico
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
| | - Frédéric Bouché
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
| | - Samuel Huerga-Fernández
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
| | - Pierre Tocquin
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
| | - Claire Périlleux
- InBioS - PhytoSYSTEMS, Laboratory of Plant Physiology, University of Liège, B22 Sart Tilman Campus, 4 Chemin de la Vallée, B-4000 Liège, Belgium
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Zhang K, Zhao L, Yang X, Li M, Sun J, Wang K, Li Y, Zheng Y, Yao Y, Li W. GmRAV1 regulates regeneration of roots and adventitious buds by the cytokinin signaling pathway in Arabidopsis and soybean. PHYSIOLOGIA PLANTARUM 2019; 165:814-829. [PMID: 29923201 DOI: 10.1111/ppl.12788] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 06/12/2018] [Accepted: 06/14/2018] [Indexed: 05/07/2023]
Abstract
The division and differentiation of cells are the basis of growth and development. Cytokinin plays an active role in cell growth division and differentiation. The Related to ABI3/VP1 (RAV) family comprises transcription factors in plants and all contain both AP2- and B3-like domains. In this study, GmRAV1 (Glycine max), which belongs to the AP2/ERF transcription factor family, was isolated and functionally characterized. Subcellular localization showed that GmRAV1 was localized to the nucleus and quantitative real-time polymerase chain reaction (qRT-PCR) analysis indicated that GmRAV1 was induced by cytokinin. Furthermore, compared with wild-type plants, plants overexpressing GmRAV1 showed dwarfism and late maturity. In contrast, the mutant of TEMPRANILLO (tem1) and GmRAV-i plants had an opposite phenotype. More interestingly, a root and shoot regeneration experiment indicated that GmRAV1 is one of the most important positive regulators of the cytokinin signaling pathway, which is involved in promoting root and shoot regeneration. In addition, RNA-seq and qRT-PCR results indicated that GmRAV1 is related to the key factors involved in the cytokinin signaling pathway, namely, cytokinin oxidase (GmCKX6 and GmCKX7), purine permease (GmPUP1), cell cyclin-related genes (GmCycA2;4, GmCycD3 and GmCYC1), cyclin-dependent kinase (GmCDKB2), cell division cycle (GmCDC20), E2F transcription factors (GmE2FE) and authentic response regulator (GmARR9). In conclusion, GmRAV1, one of the most important positive regulators involved in promoting root and shoot regeneration, was induced by cytokinin and is related to the key factors of the cytokinin signaling pathways.
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Affiliation(s)
- Kexin Zhang
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Lin Zhao
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Xue Yang
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Minmin Li
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Jingzhe Sun
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Kuo Wang
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Yinghua Li
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Yanhong Zheng
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Yuheng Yao
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
| | - Wenbin Li
- Key Laboratory of Soybean Biology in the Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University, Harbin 150030, China
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Tanaka S, Ario N, Nakagawa ACS, Tomita Y, Murayama N, Taniguchi T, Hamaoka N, Iwaya-Inoue M, Ishibashi Y. Effects of light quality on pod elongation in soybean (Glycine max (L.) Merr.) and cowpea (Vigna unguiculata (L.) Walp.). PLANT SIGNALING & BEHAVIOR 2017; 12:e1327495. [PMID: 28532320 PMCID: PMC5566249 DOI: 10.1080/15592324.2017.1327495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/29/2017] [Accepted: 05/01/2017] [Indexed: 05/29/2023]
Abstract
Soybean pods are located at the nodes, where they are in the shadow, whereas cowpea pods are located outside of the leaves and are exposed to sunlight. To compare the effects of light quality on pod growth in soybean and cowpea, we measured the length of pods treated with white, blue, red or far-red light. In both species, pods elongated faster during the dark period than during the light period in all light treatments except red light treatment in cowpea. Red light significantly suppressed pod elongation in soybean during the dark and light periods. On the other hand, the elongation of cowpea pods treated with red light markedly promoted during the light period. These results suggested that the difference in the pod set sites between soybean and cowpea might account for the difference in their red light responses for pod growth.
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Affiliation(s)
- Seiya Tanaka
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Nobuyuki Ario
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | | | - Yuki Tomita
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Naoki Murayama
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Takatoshi Taniguchi
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Norimitsu Hamaoka
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
- Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Mari Iwaya-Inoue
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
- Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Yushi Ishibashi
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
- Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
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Affiliation(s)
- Phillip A. Davis
- Stockbridge Technology Centre Cawood Selby North Yorkshire YO8 3TZ UK
| | - Claire Burns
- Stockbridge Technology Centre Cawood Selby North Yorkshire YO8 3TZ UK
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Li K, Li Z, Yang Q. Improving Light Distribution by Zoom Lens for Electricity Savings in a Plant Factory with Light-Emitting Diodes. FRONTIERS IN PLANT SCIENCE 2016; 7:92. [PMID: 26904062 PMCID: PMC4746466 DOI: 10.3389/fpls.2016.00092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 01/18/2016] [Indexed: 05/28/2023]
Abstract
The high energy consumption of a plant factory is the biggest issue in its rapid expansion, especially for lighting electricity, which has been solved to a large extent by light-emitting diodes (LED). However, the remarkable potential for further energy savings remains to be further investigated. In this study, an optical system applied just below the LED was designed. The effects of the system on the growth and photosynthesis of butterhead lettuce (Lactuca sativa var. capitata) were examined, and the performance of the optical improvement in energy savings was evaluated by comparison with the traditional LED illumination mode. The irradiation patterns used were LED with zoom lenses (Z-LED) and conventional non-lenses LED (C-LED). The seedlings in both treatments were exposed to the same light environment over the entire growth period. The improvement saved over half of the light source electricity, while prominently lowering the temperature. Influenced by this, the rate of photosynthesis sharply decreased, causing reductions in plant yield and nitrate content, while having no negative effects on morphological parameters and photosynthetic pigment contents. Nevertheless, the much higher light use efficiency of Z-LEDs makes this system a better approach to illumination in a plant factory with artificial lighting.
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Affiliation(s)
- Kun Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural ScienceBeijing, China
- Key Lab of Energy Conservation and Waste Management of Agricultural Structures, Ministry of AgricultureBeijing, China
| | - Zhipeng Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural ScienceBeijing, China
- Key Lab of Energy Conservation and Waste Management of Agricultural Structures, Ministry of AgricultureBeijing, China
| | - Qichang Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural ScienceBeijing, China
- Key Lab of Energy Conservation and Waste Management of Agricultural Structures, Ministry of AgricultureBeijing, China
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Ouzounis T, Razi Parjikolaei B, Fretté X, Rosenqvist E, Ottosen CO. Predawn and high intensity application of supplemental blue light decreases the quantum yield of PSII and enhances the amount of phenolic acids, flavonoids, and pigments in Lactuca sativa. FRONTIERS IN PLANT SCIENCE 2015; 6:19. [PMID: 25767473 PMCID: PMC4341431 DOI: 10.3389/fpls.2015.00019] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 01/09/2015] [Indexed: 05/06/2023]
Abstract
To evaluate the effect of blue light intensity and timing, two cultivars of lettuce [Lactuca sativa cv. "Batavia" (green) and cv. "Lollo Rossa" (red)] were grown in a greenhouse compartment in late winter under natural light and supplemental high pressure sodium (SON-T) lamps yielding 90 (±10) μmol m(-2) s(-1) for up to 20 h, but never between 17:00 and 21:00. The temperature in the greenhouse compartments was 22/11°C day/night, respectively. The five light-emitting diode (LED) light treatments were Control (no blue addition), 1B 06-08 (Blue light at 45 μmol m(-2) s(-1) from 06:00 to 08:00), 1B 21-08 (Blue light at 45 μmol m(-2) s(-1) from 21:00 to 08:00), 2B 17-19 (Blue at 80 μmol m(-2) s(-1) from 17:00 to 19:00), and 1B 17-19 (Blue at 45 μmol m(-2) s(-1) from 17:00 to 19:00). Total fresh and dry weight was not affected with additional blue light; however, plants treated with additional blue light were more compact. The stomatal conductance in the green lettuce cultivar was higher for all treatments with blue light compared to the Control. Photosynthetic yields measured with chlorophyll fluorescence showed different response between the cultivars; in red lettuce, the quantum yield of PSII decreased and the yield of non-photochemical quenching increased with increasing blue light, whereas in green lettuce no difference was observed. Quantification of secondary metabolites showed that all four treatments with additional blue light had higher amount of pigments, phenolic acids, and flavonoids compared to the Control. The effect was more prominent in red lettuce, highlighting that the results vary among treatments and compounds. Our results indicate that not only high light level triggers photoprotective heat dissipation in the plant, but also the specific spectral composition of the light itself at low intensities. However, these plant responses to light are cultivar dependent.
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Affiliation(s)
- Theoharis Ouzounis
- Department of Chemical Engineering, Biotechnology, and Environmental Technology, University of Southern DenmarkOdense, Denmark
- *Correspondence: Theoharis Ouzounis, Department of Chemical Engineering, Biotechnology, and Environmental Technology, University of Southern Denmark, Niels Bohrs Allé 1, Odense M, 5200, Denmark e-mail:
| | - Behnaz Razi Parjikolaei
- Department of Chemical Engineering, Biotechnology, and Environmental Technology, University of Southern DenmarkOdense, Denmark
| | - Xavier Fretté
- Department of Chemical Engineering, Biotechnology, and Environmental Technology, University of Southern DenmarkOdense, Denmark
| | - Eva Rosenqvist
- Section for Crop Sciences, Department of Plant and Environmental Sciences, University of CopenhagenTaastrup, Denmark
| | - Carl-Otto Ottosen
- Department of Food Science, Plant, Food & Climate, Aarhus UniversityAarslev, Denmark
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