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Physiological, Biochemical, and Molecular Response in Plants under Light-Emitting Diode (LED) Treatment (Volume II)

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A special issue of Biology (ISSN 2079-7737). This special issue belongs to the section "Plant Science".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 2387

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Special Issue Editors

Dr. Costantino Paciolla

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Dipartimento di Biologia, Università degli Studi di Bari "Aldo Moro", I-70125 Bari, Italy
Interests: antioxidant systems; plant defense responses; secondary metabolites; light in post-harvest; shelf-life
Special Issues, Collections and Topics in MDPI journals

Dr. Alessandra Villani

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Department of Biology, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
Interests: antioxidant systems; food safety; genomics; light in pre- and postharvest; secondary metabolites
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Dr. Martina Loi

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Italian National Research Council, CNR · Institute of Sciences of Food Production ISPA, Bari, Italy
Interests: redox-active enzymes; phenols; antioxidant activity; food safety; biological methods for mycotoxin reduction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plants have a wide variety of photoreceptors that selectively respond to radiations of the electromagnetic spectrum, allowing and modulating different physiological and biochemical processes, including photosynthesis, photomorphogenesis, phototropism, shade avoidance, and both circadian and circannual rhythms. Light-emitting diodes (LEDs) have proven to be useful for elucidating the molecular basis of these responses with their ability to independently control light wavelength and intensity. Due to these unique advantages, in the last decade, LEDs have been widely applied in horticulture on economically relevant crops to counteract biotic and abiotic stress, enhance plant productivity, control plant flowering and pests, increase and promote the synthesis of beneficial bioactive compounds, and prolong the shelf-life of fruits and vegetables during postharvest storage. Overall, understanding the physiological, biochemical, and molecular responses induced by LED lights on different plant species and even cultivars is a crucial step to optimize specific “light recipes” for optimal plant growth and health.

This Special Issue aims to summarize some of the newest advances related to physiological aspects, and the key molecular and biochemical mechanisms underlying plant responses under LED treatment. Original research papers and reviews focusing on plant growth and productivity, plant nutritional, nutraceutical and functional properties, and the safety and quality of plant products at harvest and postharvest under LED treatment, are welcome.

We hope that multidisciplinary applications of knowledge will provide substantial benefits for future research in plant science.

Dr. Costantino Paciolla
Dr. Alessandra Villani
Dr. Martina Loi
Guest Editors

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. Biology 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 2700 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

antioxidants
bioactive compounds
biotic and abiotic stress
food quality
LED
nutrients
plant defense
plant response
productivity

Related Special Issue

Physiological, Biochemical, and Molecular Response in Plants under Light-Emitting Diode (LED) Treatment in Biology (10 articles)

Published Papers (2 papers)

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Research

15 pages, 2504 KiB

Open AccessArticle

Unveiling the Cultivation of Nostoc sp. under Controlled Laboratory Conditions

by Teresa Mouga, Jéssica Pereira, Vitória Moreira and Clélia Afonso

Biology 2024, 13(5), 306; https://doi.org/10.3390/biology13050306 - 28 Apr 2024

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Abstract

Cyanobacteria, photoautotrophic Gram-negative bacteria, play a crucial role in aquatic and terrestrial environments, contributing significantly to fundamental ecological processes and displaying potential for various biotechnological applications. It is, therefore, critical to identify viable strains for aquaculture and establish accurate culture parameters to ensure an extensive biomass supply for biotechnology purposes. This study aims to establish optimal laboratory batch culture conditions for Nostoc 136, sourced from Alga₂O, Coimbra, Portugal. Preliminary investigations were conducted to identify the optimal culture parameters and to perform biomass analysis, including protein and pigment content. The highest growth was achieved with an initial inoculum concentration of 1 g.L⁻¹, using modified BG11 supplemented with nitrogen, resulting in a Specific Growth Rate (SGR) of 0.232 ± 0.017 μ.day⁻¹. When exposed to white, red, and blue LED light, the most favourable growth occurred under a combination of white and red LED light exhibiting an SGR of 0.142 ± 0.020 μ.day⁻¹. The protein content was determined to be 10.80 ± 2.09%. Regarding the pigments, phycocyanin reached a concentration of 200.29 ± 30.07 µg.mL⁻¹, phycoerythrin 148.29 ± 26.74 µg.mL⁻¹, and allophycocyanin 10.69 ± 6.07 µg.mL⁻¹. This study underscores the influence of light and nutrient supplementation on the growth of the Nostoc biomass. Full article

(This article belongs to the Special Issue Physiological, Biochemical, and Molecular Response in Plants under Light-Emitting Diode (LED) Treatment (Volume II))

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Graphical abstract

14 pages, 4202 KiB

Open AccessArticle

Blue and Red LED Lights Differently Affect Growth Responses and Biochemical Parameters in Lentil (Lens culinaris)

by Benedetta Bottiglione, Alessandra Villani, Linda Mastropasqua, Silvana De Leonardis and Costantino Paciolla

Biology 2024, 13(1), 12; https://doi.org/10.3390/biology13010012 - 24 Dec 2023

Viewed by 1651

Abstract

Light-emitting diodes are an attractive tool for improving the yield and quality of plant products. This study investigated the effect of different light intensity and spectral composition on the growth, bioactive compound content, and antioxidant metabolism of lentil (Lens culinaris Medik.) seedlings after 3 and 5 days of LED treatment. Two monochromatic light quality × three light intensity treatments were tested: red light (RL) and blue light (BL) at photosynthetic photon flux density (PPFD) of 100, 300, and 500 μmol m⁻² s⁻¹. Both light quality and intensity did not affect germination. At both harvest times, the length of seedling growth under BL appeared to decrease, while RL stimulated the growth with an average increase of 26.7% and 62% compared to BL and seedlings grown in the darkness (D). A significant blue light effect was detected on ascorbate reduced form, with an average increase of 35% and 50% compared to RL-grown plantlets in the two days of harvesting, respectively. The content of chlorophyll and carotenoids largely varied according to the wavelength and intensity applied and the age of the seedlings. Lipid peroxidation increased with increasing light intensity in both treatments, and a strong H₂O₂ formation occurred in BL. These results suggest that red light can promote the elongation of lentil seedlings, while blue light enhances the bioactive compounds and the antioxidant responses. Full article

(This article belongs to the Special Issue Physiological, Biochemical, and Molecular Response in Plants under Light-Emitting Diode (LED) Treatment (Volume II))

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