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Plants
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Halophytes as a Source of Nutrients: Chemical Composition and Biominerals
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Halophytes as a Source of Nutrients: Chemical Composition and Biominerals

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

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 6523

Special Issue Editors

Prof. Dr. Vicenta de la Fuente García

E-Mail Website
Guest Editor
Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
Interests: plant; environment science
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Lourdes Rufo Nieto

E-Mail Website
Guest Editor
Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Madrid, Spain
Interests: plants; vegetation; inorganic and organic plant chemical composition; biominerals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plants that grow in saline environments are highly specialized to withstand the conditions that characterize these extreme biotopes. These environments occupy large territories of the earth's surface in several climates, from cold to warm, arid to humid. Saline areas can be found in littoral environments, in continental areas, such as, saltpans, or even in salinized soils as a result of extensive crops. Throughout evolution, halophyte plants have developed several adaptation mechanisms to these conditions that can be observed in their morphology, anatomy and physiology. Therefore, saline ecosystems constitute the natural habitat of halophytes and, therefore, a wealth of biodiversity.

The physiological adaptation of some halophytes includes ion accumulation in their tissues (Na, K, Ca, Mg, Fe, etc.) that can lead to the formation of inorganic and organic salts; the biosynthesis of several organic osmolytes, such as sugars, alcohols, phenols, flavonoids, fatty acids, and other chemical compounds of potential interest. Thus, they can be considered a source of minerals and of nutrients. Taking this into consideration, and also the high extension of salinized agricultural soils, the use of halophytes as potential new crops and food sources is essential in the effort to feed the existing population on earth.

For this Special Issue, we are inviting original research papers, communications and review articles covering the organic and inorganic chemical composition of halophytes; macro- and micropatterns of elemental distribution in organs and tissues; biomineral identification and biomineralization processes; halophytes’ physiology and salt tolerance mechanisms related to halophytes’ chemical composition.

Prof. Dr. Vicenta de la Fuente García
Prof. Dr. Lourdes Rufo Nieto
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

  • halophytes
  • nutrients
  • ion accumulation
  • organic composition
  • elemental distribution
  • biominerals

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Published Papers (1 paper)

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Research

21 pages, 2430 KiB  
Article
Chemical Profile, Antioxidant, Antimicrobial, and Anticancer Activities of the Water-Ethanol Extract of Pulicaria undulata Growing in the Oasis of Central Saudi Arabian Desert
by Hamdoon A. Mohammed, Mohsen S. Al-Omar, Riaz A. Khan, Salman A. A. Mohammed, Kamal A. Qureshi, Manal M. Abbas, Osamah Al Rugaie, Essam Abd-Elmoniem, Adel M. Ahmad and Yasser I. Kandil
Plants 2021, 10(9), 1811; https://doi.org/10.3390/plants10091811 - 31 Aug 2021
Cited by 35 | Viewed by 5712
Abstract
Pulicaria undulata (L.) C. A. Mey has multiple uses as part of the traditional medicament, and several biological activities of the plant have been corroborated in the scientific literature. The current work evaluates the phytochemical constituents and biological properties of the water-ethanol extract [...] Read more.
Pulicaria undulata (L.) C. A. Mey has multiple uses as part of the traditional medicament, and several biological activities of the plant have been corroborated in the scientific literature. The current work evaluates the phytochemical constituents and biological properties of the water-ethanol extract of the P. undulata growing in Qassim, the central arid regions of the Kingdom of Saudi Arabia. Qualitative UPLC-ESIQ-TOF analysis identified 27 compounds belonging to the phenolics, flavonoids, triterpenes, coumarins, and of fatty acids chemical classes. The quantitative analysis exhibited 33.3 mg/g GAE (Gallic Acid Equivalents), and 10.8 mg/g QE (Quercetin Equivalents) of the phenolics and flavonoids in the plant’s concentrated (to dryness) water-ethanol extract. The trace elements analysis of the plant’s dry powder established the presence of copper (20.13 µg/kg), and zinc (68.2 µg/kg) in the higher levels of occurrences. In terms of the antioxidant potential of the plant’s extract, the ferric-reducing, and free-radicals scavenging activities were recorded at 47.11 mg/g, and 19.13 mg/g equivalents of the concentrated to dryness water-ethanol extract of the plant. The water-ethanol extract of P. undulata also exhibited antimicrobial activity against the tested Gram-positive bacteria, while no activity was observed against the tested Gram-negative bacteria, or the fungi. The MIC (minimum inhibitory concentration) values were in the range of 49 to 1563 µg/mL, whereas the MBC (minimum bactericidal concentration) values ranged from 49 to 3125 µg/mL, against the tested Gram-positive bacteria. The P. undulata water-ethanol extract also exhibited potent cytotoxic effects with the IC50 value at 519.2 µg/mL against the MCF-7 breast cancer cell-lines, followed by the anticancer activity of erythroleukemic cell-lines, K562 at 1212 µg/mL, and pancreatic cell-lines, PANC-1, at 1535 µg/mL, as compared to the normal fibroblast cells (4048 µg/mL). The Annexin-V assay demonstrated that, as the P. undulata extract’s dose increased from IC50 to twice of the IC50, the percentage of the necrosis was found to be increased in the late apoptosis stage of the cancer cells. These data confirmed the P. undulata extract’s ability to inhibit several human cancer cell lines’ growth in comparison to other local halophytes. The antimicrobial activity of the plant was also confirmed. Full article
(This article belongs to the Special Issue Halophytes as a Source of Nutrients: Chemical Composition and Biominerals)
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