Effects of Spectrum and Light Intensity on Plant Growth Metabolism

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Plant-Crop Biology and Biochemistry".

Deadline for manuscript submissions: 31 March 2024 | Viewed by 2319

Special Issue Editor

College of Horticulture, South China Agricultural University, Guangzhou 510642, China
Interests: photobiology of horticultural crops; plant factory production technology; efficient production technology for protected vegetables

Special Issue Information

Dear Colleagues,

In this Special Issue, we want to provide a forum to share knowledge about the effect of light spectrum and intensity on the physiology, growth and metabolism of plants in order to improve the sustainability and quality of plant production. We welcome studies that improve plant economic value by using light spectrum and intensity regulation and interacting environmental factors, including temperature, water, nutrients, and others. Studies that imporve the biological and molecular mechanisms of increasing secondary metabolites which are potentially beneficial to human health are also welcome. Review papers and brief report providing opinions on opportunities that can be further untapped through modern biotechnology (e.g., gene editing) are of special interest.

Dr. Houcheng Liu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • artificial light technology
  • light intensity
  • light spectrum
  • plant growth and metabolism
  • molecular mechanisms
  • sustainability and quality of plant production

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

16 pages, 2616 KiB  
Article
Hormone Signals Involved in the Regulation of Cucumber Seedling Lateral Branch Elongation by Far-Red Light
Agronomy 2024, 14(2), 366; https://doi.org/10.3390/agronomy14020366 - 12 Feb 2024
Viewed by 378
Abstract
Cucumber (Cucumis sativus L.) lateral branch elongation is influenced by a variety of environmental signals, including light [e.g., far-red (FR) light] and hormones. In this experiment, the effect of FR light on the lateral branch elongation of cucumber (‘Zhongnong No. 26’) seedlings [...] Read more.
Cucumber (Cucumis sativus L.) lateral branch elongation is influenced by a variety of environmental signals, including light [e.g., far-red (FR) light] and hormones. In this experiment, the effect of FR light on the lateral branch elongation of cucumber (‘Zhongnong No. 26’) seedlings was investigated. The results showed that FR light significantly inhibited the lateral branch elongation of cucumber seedlings. In addition, FR light significantly increased the auxin (indole-3-acetic acid, IAA) content, decreased the cytokinin (CTK; Zeatin) content, and suppressed the expression of most CTK synthetic-related genes, such as IPTs, in cucumber seedlings. The lateral branch elongation of cucumber seedlings was assessed in response to decapitation and exogenous 6-BA treatment to further investigate the relationship between IAA and CTK on the lateral branch elongation of cucumber seedlings under FR light. Both decapitation and exogenous 6-BA treatment eliminated the inhibitory effect of FR light on the lateral branch elongation of cucumber seedlings. In conclusion, these results indicated that IAA and CTK were involved in the regulatory effects of FR light on cucumber seedling lateral branch elongation. Full article
(This article belongs to the Special Issue Effects of Spectrum and Light Intensity on Plant Growth Metabolism)
Show Figures

Figure 1

12 pages, 4979 KiB  
Article
Effects of Supplemental Red and Far-Red Light at Different Growth Stages on the Growth and Nutritional Properties of Lettuce
Agronomy 2024, 14(1), 55; https://doi.org/10.3390/agronomy14010055 - 24 Dec 2023
Viewed by 766
Abstract
The understanding of the supplementation scheme of red (R) and far-red (FR) light in the cultivation of leafy vegetables in plant factories with artificial lighting (PFALs) is still limited. This study investigated the effects of supplemental R and FR light at different plant [...] Read more.
The understanding of the supplementation scheme of red (R) and far-red (FR) light in the cultivation of leafy vegetables in plant factories with artificial lighting (PFALs) is still limited. This study investigated the effects of supplemental R and FR light at different plant growth stages on the morphology, growth characteristics, and nutritional properties of lettuce. Supplemented R + FR throughout the entire growth stages was beneficial for the growth of lettuce, for which the total fresh weight was increased by 53.76%, and it also enhanced the content of soluble sugars by 39.98% and vitamin E by 34.21%. The pre-supplementation of FR light followed by supplementation of R light at various growth stages not only increase the total fresh weight of lettuce by 26.10% but also ensured that most nutritional indices did not decrease, and it even increased the content of soluble sugars by 35.24% while decreasing the nitrate content by 31.52%. The scheme of pre-supplementation of R light followed by the supplementation of FR light promoted a more upright plant architecture in lettuce, which was advantageous for improving the cultivation density of lettuce in plant factories with artificial lighting, thereby enhancing the yield/m2. Moreover, it could increase the vitamin E content of lettuce. The growth and nutritional properties of lettuce exhibit significant effects under different supplementation methods of R and FR light. In PFALs, the selection of different light supplement schemes also requires a careful balance between yield and quality. From an energy-saving perspective, the pre-supplementation of FR light followed by supplementation of R light at various plant growth stages is beneficial for lettuce production in PFALs. Full article
(This article belongs to the Special Issue Effects of Spectrum and Light Intensity on Plant Growth Metabolism)
Show Figures

Figure 1

18 pages, 2350 KiB  
Article
Organogenesis and Antioxidant Capacity of Streptocarpus ×hybridus In Vitro under Different LED Light Spectrum Composition
Agronomy 2023, 13(12), 3009; https://doi.org/10.3390/agronomy13123009 - 07 Dec 2023
Viewed by 859
Abstract
Plants, whilst also having an ornamental role, are also a source of beneficial, bioactive compounds, and in vitro cultures are helpful in finding and obtaining them. Streptocarpus ×hybridus can be a source of antioxidants. The effect of different LED light qualities on [...] Read more.
Plants, whilst also having an ornamental role, are also a source of beneficial, bioactive compounds, and in vitro cultures are helpful in finding and obtaining them. Streptocarpus ×hybridus can be a source of antioxidants. The effect of different LED light qualities on the growth, development and metabolite composition of Streptocarpus multiplied in vitro on Murashige and Skoog medium was investigated. The used spectra were: 100% blue (B), 100% red (R), red and blue in 7:3 proportion (RB), 50% RB + 50% ultra violet (RBUV), 50% RB + 50% green (RBG), 50% RB + 50% yellow (RBY), 50% RB + 50% far red (RBfR), and white (WLed). A fluorescent lamp served as the control (Fl). For the best morphological quality of multiplied plants, the use of RBY light is recommended. Fl light reduced the antioxidant properties of extracts compared to LEDs. The most recommended spectrum in this aspect is RBfR, WLed, RBG and R light. These lights (except for R) stimulated the polyphenol content. RBY and R light influenced the highest content of free amino acids and reducing sugars. Studies showed that a selected LED light spectrum can influence the production of plant biomolecules with antioxidant properties and, compared to Fl light, improves the growth and development of multiplied plants. Full article
(This article belongs to the Special Issue Effects of Spectrum and Light Intensity on Plant Growth Metabolism)
Show Figures

Figure 1

Back to TopTop