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Ragab OG, Mamdouh D, Bedair R, Smetanska I, Gruda NS, Yousif SKM, Omer RM, Althobaiti AT, Abd El-Raouf HS, El-Taher AM, El-Sayed AS, Eldemerdash MM. Distinguishing features of Lycium L. species (family Solanaceae) distributed in Egypt based on their anatomical, metabolic, molecular, and ecological characteristics. FRONTIERS IN PLANT SCIENCE 2023; 14:1162695. [PMID: 37251766 PMCID: PMC10213676 DOI: 10.3389/fpls.2023.1162695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/11/2023] [Indexed: 05/31/2023]
Abstract
Among the 70-80 species of the genus Lycium (family Solanaceae) disjunctly distributed around the world, only three are frequently distributed in different locations in Egypt. Due to the morphological similarities between these three species, there is a need for alternative tools to distinguish them. Thus, the objective of this study was to revise the taxonomic features of Lycium europaeum L., Lycium shawii Roem. & Schult., and Lycium schweinfurthii var. aschersonii (Dammer) Feinbrun in consideration of their anatomical, metabolic, molecular, and ecological characteristics. In addition to analysis of their anatomical and ecological features, DNA barcoding was performed for molecular characterization through internal transcribed spacer (ITS) sequencing and start codon targeted (SCoT) markers. Furthermore, metabolic profiling of the studied species was conducted based on gas chromatography-mass spectrometry (GC-MS). The observed anatomical features of the adaxial and abaxial epidermal layers, type of mesophyll, crystals, number of palisade and spongy layers, and the vascular system showed variations between the studied species. Beyond this, the anatomy of the leaves showed an isobilateral structure in the studied species, without distinct differences. Species were molecularly identified in terms of ITS sequences and SCoT markers. The ITS sequences were deposited in GenBank with accession numbers ON149839.1, OP597546.1, and ON521125.1 for L. europaeum L., L. shawii, and L. schweinfurthii var. aschersonii, respectively. The sequences showed variations in GC content between the studied species; this was 63.6% in L. europaeum, 61.53% in L. shawii, and 63.55% in L. schweinfurthii var. aschersonii. A total of 62 amplified fragments, including 44 polymorphic fragments with a ratio of 70.97%, were obtained in the SCoT analysis, as well as unique amplicons in L. europaeum L., shawii, and L. schweinfurthii var. aschersonii of 5, 11, and 4 fragments, respectively. Through GC-MS profiling, 38 compounds were identified with clear fluctuations in the extracts of each species. Of these, 23 were distinguishing chemicals that could help in chemical identification of the extracts of the studied species. The present study succeeds in identifying alternative clear and diverse characteristics that can be used to distinguish between L. europaeum, L. shawii, and L. schweinfurthii var. aschersonii.
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Affiliation(s)
- Osama G. Ragab
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Diaa Mamdouh
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo, Egypt
- Department of Plant Food Processing, Agricultural Faculty, University of Applied Sciences Weihenstephan-Triesdorf, Weidenbach, Germany
| | - Ramadan Bedair
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Iryna Smetanska
- Department of Plant Food Processing, Agricultural Faculty, University of Applied Sciences Weihenstephan-Triesdorf, Weidenbach, Germany
| | - Nazim S. Gruda
- Division of Horticultural Sciences, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany
| | - Sawsan K. M. Yousif
- Department of Chemistry, College of Arts and Science in Baljurashi, Al-Baha University, Al Bahah, Saudi Arabia
| | - Rihab M. Omer
- Department of Chemistry, College of Arts and Science in Baljurashi, Al-Baha University, Al Bahah, Saudi Arabia
| | | | - Hany S. Abd El-Raouf
- Department of Agricultural Botany, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
- Department of Biology, University College, Taif University, Taif, Saudi Arabia
| | - Ahmed M. El-Taher
- Department of Agricultural Botany, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Ashraf S. El-Sayed
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Marwa M. Eldemerdash
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
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Miguel MDG. Chemical and Biological Properties of Three Poorly Studied Species of Lycium Genus-Short Review. Metabolites 2022; 12:1265. [PMID: 36557303 PMCID: PMC9788301 DOI: 10.3390/metabo12121265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The genus Lycium belongs to the Solanaceae family and comprises more than 90 species distributed by diverse continents. Lycium barbarum is by far the most studied and has been advertised as a “superfood” with healthy properties. In contrast, there are some Lycium species which have been poorly studied, although used by native populations. L. europaeum, L. intricatum and L. schweinfurthii, found particularly in the Mediterranean region, are examples of scarcely investigated species. The chemical composition and the biological properties of these species were reviewed. The biological properties of L. barbarum fruits are mainly attributed to polysaccharides, particularly complex glycoproteins with different compositions. Studies regarding these metabolites are practically absent in L. europaeum, L. intricatum and L. schweinfurthii. The metabolites isolated and identified belong mainly to polyphenols, fatty acids, polysaccharides, carotenoids, sterols, terpenoids, tocopherols, and alkaloids (L. europaeum); phenolic acids, lignans, flavonoids, polyketides, glycosides, terpenoids, tyramine derivatives among other few compounds (L. schweinfurthii), and esters of phenolic acids, glycosides, fatty acids, terpenoids/phytosterols, among other few compounds (L. intricatum). The biological properties (antioxidant, anti-inflammatory and cytotoxic against some cancer cell lines) found for these species were attributed to some metabolites belonging to those compound groups. Results of the study concluded that investigations concerning L. europaeum, L. intricatum and L. schweinfurthii are scarce, in contrast to L. barbarum.
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Affiliation(s)
- Maria da Graça Miguel
- Departamento de Química e Farmácia, Mediterranean Institute for Agriculture, Environment and Development, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
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Optimization of Callus and Cell Suspension Cultures of Lycium schweinfurthii for Improved Production of Phenolics, Flavonoids, and Antioxidant Activity. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050394] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Lycium schweinfurthii is a traditional medicinal plant grown in the Mediterranean region. As it is used in folk medicine to treat stomach ulcers, it took more attention as a source of valuable secondary metabolites. The in vitro cultures of L. schweinfurthii could be a great tool to produce secondary metabolites at low costs. The presented study aimed to introduce and optimize a protocol for inducing callus and cell suspension cultures as well as estimating phenolic, flavonoid compounds, and antioxidant activity in the cultures of the studied species. Three plant growth regulators (PGRs) were supplemented to MS medium solely or in combination to induce callus from leaf explants. The combination between 2,4-dichlorophenoxy acetic acid (2,4-D) and 1-naphthyl acetic acid (NAA) induced callus in all explants regardless of the concentration. The highest fresh weight of callus (3.92 g) was obtained on MS medium fortified with 1 mg L−1 of both 2,4-D and NAA (DN1) after 7 weeks of culture. DN1 was the best medium for callus multiplication regarding the increase in fresh weight and size of callus. Otherwise, the highest phenolics, flavonoids, and antioxidant activity against DPPH free radicals were of callus on MS fortified with 2 mg L−1 NAA (N2). The cell suspension cultures were cultivated on a liquid N2 medium with different sucrose concentrations of 5–30 g L−1 to observe the possible effects on cells’ multiplication and secondary metabolite production. The highest fresh and viable biomass of 12.01 g was obtained on N2 containing 30 g L−1 sucrose. On the other hand, the cell cultures on N2 medium of 5 and 30 g L−1 sucrose produced phenolics and flavonoids, and revealed antioxidant activity against DPPH and ABTS+ free radicals more than other sucrose concentrations. The presented protocol should be useful in the large-scale production of phenolic and flavonoid compounds from callus and cell cultures of L. schweinfurthii.
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Youssef DTA, Shaala LA, Altyar AE. Cytotoxic Phenylpropanoid Derivatives and Alkaloids from the Flowers of Pancratium maritimum L. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040476. [PMID: 35214809 PMCID: PMC8875508 DOI: 10.3390/plants11040476] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/04/2022] [Accepted: 02/05/2022] [Indexed: 06/01/2023]
Abstract
Regarding our growing interest in identifying biologically active leads from Amaryllidaceous plants, the flowers of Pancratium maritimum L. (Amaryllidaceae) were investigated. Purification of the cytotoxic fractions of the alcoholic extract of the flowers gave a new glycoside, 3-[4-(β-D-glucopyranosyloxy)phenyl]-2-(Z)-propenoic acid methyl ester (1), together with the previously reported compounds 3-methoxy-4-(β-D-glucopyranosyloxy)benzoic acid methyl ester (2), 3-(4-methoxyphenyl)propan-1-ol-1-O-β-D-glucopyranoside (3), (E)-3-(4-hydroxyphenyl)acrylic acid methyl ester (4), caffeic acid (5), dihydrocaffeic acid methyl ester (6), and pancratistatin (7). Interestingly, compounds 1 and 2 are phenolic-O-glycosides, while the glucose moiety in 3 is attached to the propanol side chain. This is the first report about the existence of 1-6 in the genus Pancratium. Further, glycosides 1-3 from the Amaryllidaceae family are reported on here for the first time. The structures of 1-7 were determined by analyses of their 1D (1H and 13C) and 2D (COSY, HMQC, HMBC) NMR spectra, and by high-resolution mass spectral measurements. Pancratistatin displayed potent and selective growth inhibitory effects against MDA-MB-231, HeLa, and HCT 116 cells with an IC50 value down to 0.058 µM, while it possessed lower selectivity towards the normal human dermal fibroblasts with IC50 of 6.6 µM.
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Affiliation(s)
- Diaa T. A. Youssef
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia
| | - Lamiaa A. Shaala
- Natural Products Unit, King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia
| | - Ahmed E. Altyar
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia;
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Mamdouh D, Mahgoub HAM, Gabr AMM, Ewais EA, Smetanska I. Genetic Stability, Phenolic, Flavonoid, Ferulic Acid Contents, and Antioxidant Activity of Micropropagated Lycium schweinfurthii Plants. PLANTS 2021; 10:plants10102089. [PMID: 34685900 PMCID: PMC8540154 DOI: 10.3390/plants10102089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022]
Abstract
Lycium schweinfurthii is a Mediterranean wild shrub rich in plant secondary metabolites. In vitro propagation of this plant may support the production of valuable dietary supplements for humanity, introduction of it to the world market, and opportunities for further studies. The presented study aimed to introduce an efficient and reproducible protocol for in vitro micropropagation of L. schweinfurthii and assess the genetic stability of micropropagated plants (MiPs) as well as to estimate phenolic, flavonoid, ferulic acid contents, and the antioxidant activity in leaves of micropropagated plants. Two DNA-based techniques, random amplified polymorphic DNA (RAPD) and inter-simple sequence repeats (ISSR), and one biochemical technique, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), were used to assess the genetic stability in MiPs. Spectrophotometric analysis was performed to estimate total phenolic and flavonoid contents and antioxidant activity of MiPs leaves, while ferulic acid content was estimated using high-performance thin-layer chromatography (HPTLC). Sufficient shoot proliferation was achieved at MS (Murashige and Skoog) medium supplemented with 0.4 mg L-1 kinetin and rooted successfully on half-strength MS medium fortified with 0.4 mg L-1 Indole-3-butyric acid (IBA). The Jaccard's similarity coefficients detected in MiPs reached 52%, 55%, and 82% in the RAPD, ISSR, and SDS-PAGE analyses, respectively. In the dried leaves of MiPs, the phenolic, flavonoid, and ferulic acid contents of 11.53 mg gallic acid equivalent, 12.99 mg catechin equivalent, and 45.52 mg were estimated per gram, respectively. However, an IC50 of 0.43, and 1.99 mg mL-1 of MiP dried leaves' methanolic extract was required to scavenge half of the DPPH, and ABTS free radicals, respectively. The study presented a successful protocol for in vitro propagation of a valued promising plant source of phenolic compounds.
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Affiliation(s)
- Diaa Mamdouh
- Department of Plant Food Processing, Agricultural Faculty, University of Applied Sciences Weihensteph-an-Triesdorf, Markgrafenstr 16, 91746 Weidenbach, Germany
- Botany & Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt; (H.A.M.M.); (E.A.E.)
- Correspondence: (D.M.); (I.S.)
| | - Hany A. M. Mahgoub
- Botany & Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt; (H.A.M.M.); (E.A.E.)
| | - Ahmed M. M. Gabr
- Department of Plant Biotechnology, Genetic Engineering and Biotechnology Research Division, National Research Centre (NRC), Cairo 12622, Egypt;
| | - Emad A. Ewais
- Botany & Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt; (H.A.M.M.); (E.A.E.)
| | - Iryna Smetanska
- Department of Plant Food Processing, Agricultural Faculty, University of Applied Sciences Weihensteph-an-Triesdorf, Markgrafenstr 16, 91746 Weidenbach, Germany
- Correspondence: (D.M.); (I.S.)
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Elbermawi A, Halim AF, Mansour ESS, Ahmad KF, Elsbaey M, Ashour A, Amen Y, El-Gamil MM, Tomofumi M, Shimizu K. Lycium schweinfurthii: new secondary metabolites and their cytotoxic activities. Nat Prod Res 2021; 36:5134-5141. [PMID: 34180314 DOI: 10.1080/14786419.2021.1922902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Two new compounds, 11S-methoxy-11,12-dihydro phytuberin (2) and 9S-methoxy-benzocyclononan-7-one (6), together with twenty-six known ones were isolated from Lycium schweinfurthii (Solanaceae). Their planar structure was established by extensive spectroscopic analyses. The absolute configuration of compound 6 was determined by time dependent density functional theory calculations (TDDFT). The cytotoxic potential of the isolates was assessed in cultured skin cancer (G-361) and colon cancer (HCT-116 and CaCo-2) cell lines. Certain flavonoids showed the highest cytotoxic activity, with IC50 values ranging from 7.1 to 63.3 µM; meanwhile 5-flurouracil showed IC50 values ranging from 62.4 to >100 µM. All compounds showed minimal toxicity towards normal cells from skin (NHDF-4) and colon (CCD-841), indicating their potential selectivity and safety as cytotoxic candidates.
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Affiliation(s)
- Ahmed Elbermawi
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.,Division of Systematic Forest and Forest Products Sciences, Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
| | - Ahmed F Halim
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - El-Sayed S Mansour
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Kadria F Ahmad
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Marwa Elsbaey
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.,Division of Systematic Forest and Forest Products Sciences, Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
| | - Ahmed Ashour
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.,Division of Systematic Forest and Forest Products Sciences, Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
| | - Yhiya Amen
- Department of Pharmacognosy Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.,Division of Systematic Forest and Forest Products Sciences, Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
| | - Mohammed M El-Gamil
- Department of Toxic and Narcotic Drugs, Forensic Medicine, Mansoura Laboratory, Medico-legal Organization, Ministry of Justice, Mansoura, Egypt
| | - Miyamoto Tomofumi
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kuniyoshi Shimizu
- Division of Systematic Forest and Forest Products Sciences, Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
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Bendjedou H, Barboni L, Maggi F, Bennaceur M, Benamar H. Alkaloids and sesquiterpenes from roots and leaves of Lycium europaeum L. (Solanaceae) with antioxidant and anti-acetylcholinesterase activities. Nat Prod Res 2019; 35:2784-2788. [PMID: 31542954 DOI: 10.1080/14786419.2019.1666386] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Lycium europaeum L. is a spiny shrub of the Solanaceae family, known in Algeria as 'Awsaj' and used as food and herbal remedy. The phytochemical investigation of the alkaloid extract of roots and leaves led to the isolation and characterisation of one alkaloid (harmine (3)) and four sesquiterpenes (C-1' epimer of (2 R,5S,10R)-2-(1',2'-dihydroxy-1'-methylethyl)-6,10-dimethylspiro[4,5]dec-6-en-8-one (1), C-1' epimer of 2-(1',2'-di-hydroxy-1'-methylethyl)-6,10-dimethylspiro[4,5]dec-6,9-dien-8-one (2), (+)-dehydrovomifoliol (4), vomifoliol (5)). Their structures were elucidated using NMR and MS spectroscopic data. The isolated compounds were characterised for the first time from the genus Lycium. All isolated compounds have shown antioxidant and acetylcholinesterase (AChE) inhibitory activities in the bioautography assays. The ethanolic and alkaloid extracts of roots and leaves were also tested, and, particularly, the alkaloid extracts were the most active ones as antioxidant and AChE inhibitors.
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Affiliation(s)
| | - Luciano Barboni
- School of Science and Technology, University of Camerino, Camerino, Italy
| | - Filippo Maggi
- School of Pharmacy, University of Camerino, Camerino, Italy
| | - Malika Bennaceur
- Department of Biology, University of Oran1, Oran, Algeria.,Laboratory of Research in Arid Areas, Algiers, Algeria
| | - Houari Benamar
- Department of Biology, University of Oran1, Oran, Algeria.,Department of Biology, University of Mostaganem Abdelhamid Ibn Badis, Mostaganem, Algeria
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