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Bioactive Compounds and Antioxidants in Plants
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Bioactive Compounds and Antioxidants in Plants

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (15 January 2022) | Viewed by 19670

Special Issue Editors

Dr. Pedro Diaz-Vivancos

E-Mail Website
Guest Editor
CEBAS-CSIC, Department of Plant Breeding, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain
Interests: salt-stress response; abiotic and biotic stresses; growth regulator; antioxidant; antioxidative metabilism; environmental stresses; oxidative stress; cell proliferation; plant tissue culture; plant physiology; reactive oxygen species
Special Issues, Collections and Topics in MDPI journals
Dr. Gregorio Barba-Espín

E-Mail Website
Guest Editor
Centro de Edafología y Biología Aplicada del Segura, CSIC, Grupo de Biotecnología de Frutales, Departamento de Mejora Vegetal, E-30100 Murcia, Spain
Interests: plant biotechnology and breeding; crop management; plant biotechnology; antioxidant metabolism, proteomics, molecular biology in numerous plant species
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Numerous plant bioactive compounds are attracting significant attention due to their health benefits contributing to the reduced risk for a wide range of diseases. Those benefits are generally linked to the antioxidant properties of these compounds. However, much scientific research need to be addressed before science-based dietary recommendations can be made. 

Bioactive compounds classification is commonly based on their chemical composition, origin, structure, as well as on their biological activity. This is a body of research in continuous expansion, in which novel compounds and plant sources, as well as new healthy properties are in focus. Moreover, it is of key importance the elucidation of metabolic pathways leading to bioactive compounds accumulation, the characterisation of their antioxidant properties and their interplay with plant antioxidative metabolism. In addition, understanding how abiotic stress conditions affect the production of bioactive compounds is also an important goal to be achieved in the context of global climate change.

The forthcoming Special Issue aim to provide a comprehensive understanding of plants bioactive compounds and antioxidants. We welcome novel research, reviews and opinion manuscripts covering all related topics, including novel products and sources, dietary and non-dietary bioactive compounds, new methodologies, antioxidant metabolism, oxidative stress and signalling, and policy-related issues.

Dr. Pedro Diaz-Vivancos
Dr. Gregorio Barba-Espín
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. Plants is an international peer-reviewed open access semimonthly 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

  • abiotic stress
  • antioxidant metabolism
  • bioactive compounds
  • health properties
  • natural products
  • plant extracts
  • secondary metabolism

Published Papers (6 papers)

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Research

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19 pages, 2471 KiB  
Article
Influence of Ascophyllum nodosum Extract Foliar Spray on the Physiological and Biochemical Attributes of Okra under Drought Stress
by Jawad Ali, Ibadullah Jan, Hidayat Ullah, Nazeer Ahmed, Mukhtar Alam, Rafi Ullah, Mohamed El-Sharnouby, Hosny Kesba, Mustafa Shukry, Samy Sayed and Taufiq Nawaz
Plants 2022, 11(6), 790; https://doi.org/10.3390/plants11060790 - 16 Mar 2022
Cited by 13 | Viewed by 2985
Abstract
Drought stress restricts the growth of okra (Abelmoschus esculentus L.) primarily by disrupting its physiological and biochemical functions. This study evaluated the role of Ascophyllum nodosum extract (ANE) in improving the drought tolerance of okra. Drought stress (3 days (control), 6 days [...] Read more.
Drought stress restricts the growth of okra (Abelmoschus esculentus L.) primarily by disrupting its physiological and biochemical functions. This study evaluated the role of Ascophyllum nodosum extract (ANE) in improving the drought tolerance of okra. Drought stress (3 days (control), 6 days (mild stress), and 9 days (severe stress)) and 4 doses of ANE (0, 0.1%, 0.2%, and 0.3%) were imposed after 30 days of cultivation. The results indicate that drought stress decreases the chlorophyll content (total chlorophyll, chlorophyll a, chlorophyll b, and carotenoid) but increases the activity of anthocyanin, proline, and antioxidant enzymes such as ascorbate peroxidase (APX), peroxidase (POD), and catalase (CAT). Physiological and biochemical plant disturbances and visible growth reduction in okra under drought stress were significantly decreased by the application of ANE foliar spray. ANE spray (0.3%) significantly increased the chlorophyll abundance and activity of anthocyanin, proline, and antioxidants (APX, POD, and CAT). ANE regulated and improved biochemical and physiological functions in okra under both drought and control conditions. The results of the current study show that ANE foliar spray may improve the growth performance of okra and result in the development of drought tolerance in okra. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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13 pages, 1712 KiB  
Article
H2O2-Elicitation of Black Carrot Hairy Roots Induces a Controlled Oxidative Burst Leading to Increased Anthocyanin Production
by Gregorio Barba-Espín, Christian Martínez-Jiménez, Alberto Izquierdo-Martínez, José R. Acosta-Motos, José A. Hernández and Pedro Díaz-Vivancos
Plants 2021, 10(12), 2753; https://doi.org/10.3390/plants10122753 - 14 Dec 2021
Cited by 5 | Viewed by 2277
Abstract
Hairy roots (HRs) grown in vitro are a powerful platform for plant biotechnological advances and for the bio-based production of metabolites of interest. In this work, black carrot HRs able to accumulate anthocyanin as major secondary metabolite were used. Biomass and anthocyanin accumulation [...] Read more.
Hairy roots (HRs) grown in vitro are a powerful platform for plant biotechnological advances and for the bio-based production of metabolites of interest. In this work, black carrot HRs able to accumulate anthocyanin as major secondary metabolite were used. Biomass and anthocyanin accumulation were improved by modulating growth medium composition—different Murashige & Skoog (MS)-based media—and H2O2-elicitation, and the level of the main antioxidant enzymes on elicited HRs was measured. Higher growth was obtained on liquid 1/2 MS medium supplemented with 60 g/L sucrose for HRs grown over 20 days. In this medium, 200 µM H2O2 applied on day 12 induced anthocyanin accumulation by 20%. The activity of superoxide dismutase (SOD)—which generates H2O2 from O2•−—increased by over 50%, whereas the activity of H2O2-scavenging enzymes was not enhanced. Elicitation in the HRs can result in a controlled oxidative burst, in which SOD activity increased H2O2 levels, whereas anthocyanins, as effective reactive oxygen species scavengers, could be induced to modulate the oxidative burst generated. Moreover, given the proven stability of the HR lines used and their remarkable productivity, this system appears as suitable for elucidating the interplay between antioxidant and secondary metabolism. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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13 pages, 1085 KiB  
Article
Phytochemical Analysis and Biological Activity of Three Stachys Species (Lamiaceae) from Romania
by Diana Ionela Stegăruș, Ecaterina Lengyel, George Florian Apostolescu, Oana Romina Botoran and Corneliu Tanase
Plants 2021, 10(12), 2710; https://doi.org/10.3390/plants10122710 - 09 Dec 2021
Cited by 10 | Viewed by 3078
Abstract
Three species of Stachys genus (S. byzantina, S. officinalis, S. sylvatica) were investigated in the present study in terms of aromatic profile and total polyphenol content, as well as antibacterial activity and antioxidant capacity. Gas chromatography coupled with flame [...] Read more.
Three species of Stachys genus (S. byzantina, S. officinalis, S. sylvatica) were investigated in the present study in terms of aromatic profile and total polyphenol content, as well as antibacterial activity and antioxidant capacity. Gas chromatography coupled with flame ionization detection (GC/FID) was used for exploration of the herbal alcoholic extracts. Using statistical analysis, volatile organic compounds (VOCs) and total phenolic chemical fingerprints were compared in order to describe differences and identify putative signature traits of the three Stachys species. The results showed that the analyzed Stachys extracts have a total polyphenol content being between 197 ± 0.27 mg GAE/g for S. sylvatica and 232 ± 43 mg GAE/g for S. officinalis. The antioxidant activity was between 444 ± 58 mM Trolox/g (S. sylvatica) and 602 ± 75 mM Trolox/g (S. officinalis). The volatile compounds identified were mostly sesquiterpenes, followed by monoterpenes and secondary compounds. The most abundant in all three species was germacrene D (21.9% 28–25.2%). The multivariate analysis demonstrated the potential of using plant tissue VOC profiles to discriminate between different Stachy species, with a total of 31 VOCs being identified from all three species. Although there were strong similarities among the three species’ VOC profiles, distinctions can be made using chemometric analysis. The microbiological results showed an antimicrobial capacity of all three extracts, especially on Gram-positive bacteria. In addition to increasing consumers’ understanding regarding the health benefits of these Stachy species, this investigation contributes to defining and preserving a precious genetic and cultural-historical biodiversity. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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21 pages, 1237 KiB  
Article
Radical Scavenging Actions and Immunomodulatory Activity of Aronia melanocarpa Propylene Glycol Extracts
by Kseniya Bushmeleva, Alexandra Vyshtakalyuk, Dmitriy Terenzhev, Timur Belov, Andrey Parfenov, Natalia Sharonova, Evgeniy Nikitin and Vladimir Zobov
Plants 2021, 10(11), 2458; https://doi.org/10.3390/plants10112458 - 15 Nov 2021
Cited by 13 | Viewed by 2034
Abstract
Researchers are attracted to the wide-ranging, useful components in Aronia melanocarpa berries. They are searching for the most effective ways to extract the active substances that can enhance the body’s protective properties. The current study presents detailed information about the extracts from A. [...] Read more.
Researchers are attracted to the wide-ranging, useful components in Aronia melanocarpa berries. They are searching for the most effective ways to extract the active substances that can enhance the body’s protective properties. The current study presents detailed information about the extracts from A. melanocarpa fruits frozen and dried under mild conditions and their chemical composition. In Wistar rats with induced immunosuppression, the effect of chokeberry fruit extracts on the leukocyte formula, phagocytic activity, and cytokine system was studied. It was shown that the A. melanocarpa frozen fruit extract contains more anthocyanins, sugars, and ascorbic acid, and has a more pronounced antioxidant activity determined by the ability to bind APPH-radicals. Moreover, the extract showed membrane-protective and cytoprotective properties against RPMI-1788 cell line. The extract from dried raw material shows a higher antioxidant activity due to the ability to bind DPPH-radicals. It was revealed that extracts from A. melanocarpa fruits promote rapid immune system recovery in rats, normalize the leukocyte count, and improve monocyte and neutrophil phagocytic indicators. Research on the cytokine profile revealed that the anti-inflammatory properties in A. melanocarpa extracts were more pronounced in dried extracts. For several cytokines, a normalization of quantity was noted. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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Review

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20 pages, 3874 KiB  
Review
Strategies of Elicitation to Enhance Bioactive Compound Content in Edible Plant Sprouts: A Bibliometric Study
by María Trinidad Toro, Jaime Ortiz, José Becerra, Nelson Zapata, Paulo Fierro, Marcelo Illanes and María Dolores López
Plants 2021, 10(12), 2759; https://doi.org/10.3390/plants10122759 - 14 Dec 2021
Cited by 8 | Viewed by 3051
Abstract
Vegetable sprouts are a food source that presents high content of bioactive compounds which can also be enhanced through elicitation mechanisms. To better understand the scientific production and research trends on this topic, a bibliometric analysis by means of the Web of Science [...] Read more.
Vegetable sprouts are a food source that presents high content of bioactive compounds which can also be enhanced through elicitation mechanisms. To better understand the scientific production and research trends on this topic, a bibliometric analysis by means of the Web of Science database was carried out. The results showed significant growth in research on the elicitation of edible plants sprouts. The three most productive journals were the Journal of Agricultural and Food Chemistry, followed by Food Chemistry and LWT-Food Science and Technology. The co-occurrence of keyword analysis of the different authors showed that the main research topics in this domain were ‘germination’, ‘antioxidant activity’, ‘sprouts’, ‘glucosinolates’ and ‘phenolics‘. The countries with the highest number of scientific publications were China, followed by India and USA. The productivity patterns of the authors conformed to Lotka’s law. This study provides an overview of research on elicitation to enrich bioactive compounds in sprouts, and the need to review and update the trends on this subject. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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29 pages, 1663 KiB  
Review
Improving the Health-Benefits of Kales (Brassica oleracea L. var. acephala DC) through the Application of Controlled Abiotic Stresses: A Review
by Erika Ortega-Hernández, Marilena Antunes-Ricardo and Daniel A. Jacobo-Velázquez
Plants 2021, 10(12), 2629; https://doi.org/10.3390/plants10122629 - 29 Nov 2021
Cited by 11 | Viewed by 5020
Abstract
Kale (Brassica oleracea L. var. acephala DC) is a popular cruciferous vegetable originating from Central Asia, and is well known for its abundant bioactive compounds. This review discusses the main kale phytochemicals and emphasizes molecules of nutraceutical interest, including phenolics, carotenoids, and [...] Read more.
Kale (Brassica oleracea L. var. acephala DC) is a popular cruciferous vegetable originating from Central Asia, and is well known for its abundant bioactive compounds. This review discusses the main kale phytochemicals and emphasizes molecules of nutraceutical interest, including phenolics, carotenoids, and glucosinolates. The preventive and therapeutic properties of kale against chronic and degenerative diseases are highlighted according to the most recent in vitro, in vivo, and clinical studies reported. Likewise, it is well known that the application of controlled abiotic stresses can be used as an effective tool to increase the content of phytochemicals with health-promoting properties. In this context, the effect of different abiotic stresses (saline, exogenous phytohormones, drought, temperature, and radiation) on the accumulation of secondary metabolites in kale is also presented. The information reviewed in this article can be used as a starting point to further validate through bioassays the effects of abiotically stressed kale on the prevention and treatment of chronic and degenerative diseases. Full article
(This article belongs to the Special Issue Bioactive Compounds and Antioxidants in Plants)
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