Distribution and composition of salts in sand dunes overlying salt flats of coastal desert, Saudi Arabia

Al-Awajy, M.H.; Heakal, M. S.; Al-Asheikh, A.; Reda, M.

doi:10.1016/0016-7061(92)90101-c

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…These plants are widely distributed in the regions of the world wherein super-salinity environments exist with moderate to high temperatures together with a certain degree of moisture [ 2 ]. In the Kingdom of Saudi Arabia, the halophytic plants are commonly growing, some in high abundance, some in the coastal, and the central warm with low-rainfall, and high-salt soil locations [ 3 , 4 ]. The majority of the halophytes are traditionally used by the locals, and nomadic Bedouin tribes as a remedy for infectious, diabetic, and adverse skin conditions [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Anti-Microbial, Anti-Oxidant, and α-Amylase Inhibitory Activity of Traditionally-Used Medicinal Herbs: A Comparative Analyses of Pharmacology, and Phytoconstituents of Regional Halophytic Plants’ Diaspora

Al-Omar

Mohammed

et al. 2020

Molecules

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Halophytes are the category of plants growing under harsh conditions of super-salinity, and are wide-spread in the coastal Mediterranean climatic conditions and desert oasis. They are adept at surviving through maintaining excessive production of enzymatic, and non-enzymatic secondary metabolites, especially phenolics and flavonoids that primarily work as anti-oxidants and phytoalexins. Five major halophyte species growing in the kingdom’s Qassim’s high-salted desert regions were investigated for confirming their traditionally used biological activity of sugar-control and anti-infectious properties. In this context, the comparative presence of phenolics, and flavonoids together with anti-microbial, anti-oxidants, and the anti-diabetic potentials of the plants’ extracts were investigated through the α-amylase inhibition method. The highest concentrations of phenolics and flavonoids were detected in Salsola imbricata (360 mg/g of the extract as Gallic-Acid-Equivalents/GAE, and 70.5 mg/g of the extract as Rutin-Equivalents/RE). In contrast, the lowest concentrations of phenolics and flavonoids were detected in Salsola cyclophylla (126.6 mg/g GAE, and 20.5 mg/g RE). The halophytes were found rich in trace elements, a factor for water-retention in high-salinity plants, wherein iron and zinc elements were found comparatively in higher concentrations in Aeluropus lagopoides (4113 µg/kg, and 40.1 µg/kg, respectively), while the copper was detected in higher concentration (11.1 µg/kg) in S. imbricata, analyzed through Inductively Coupled Plasma Optical Emission Spectrometric (ICP-OES) analysis. The anti-oxidant potentials and α-amylase enzyme inhibition-based anti-diabetic activity of S. imbricata was significantly higher than the other halophytes under study, wherein S. cyclophylla exhibited the lowest level of α-amylase inhibition. The maximum DPPH radicals’ (52.47 mg/mL), and α-amylase inhibitions (IC50 22.98 µg/mL) were detected in A.lagopoides. The anti-microbial activity against the Methicillin-Resistant Staphylococcus aureus was strongly exhibited by Zygophyllum simplex (33 mm Inhibition Zone-Diameter, 50 µg/mL Minimum-Inhibitory-Concentration), while Escherichia coli, Enterococcus faecalis, and Candida albicans growths were moderately inhibited by Tamarix aphylla. The current findings exhibited significant differences among the locally distributed halophytic plants species with regards to their bioactivity levels, anti-oxidant potentials, and the presence of trace elements. The ongoing data corroborated the plants’ traditional uses in infections and diabetic conditions. The enhanced local distribution of the plants’ diaspora and higher density of occurrence of these plants species in this region, in comparison to their normal climatic condition’s counterparts, seemed to be affected by humans’ use of the species as part of the traditional and alternative medicine over a period of long time.

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Section: Introductionmentioning

confidence: 99%

Anti-Microbial, Anti-Oxidant, and α-Amylase Inhibitory Activity of Traditionally-Used Medicinal Herbs: A Comparative Analyses of Pharmacology, and Phytoconstituents of Regional Halophytic Plants’ Diaspora

Al-Omar

Mohammed

et al. 2020

Molecules

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Toft

Elliott‐Fisk

2002

Plant Ecology

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Geohazards of Saudi Arabia

Hird

Matteo

Gülerce³

et al. 2019

Journal of Maps

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Geohazards play an important role in land development and have serious impacts if not considered at early planning stages. Identification of potential geohazards, assessment of their likelihood and severity is a complex task that requires integration of various information through a multi-disciplinary approach. An introductory level assessment of potential geohazards in Saudi Arabia with compilation and interpretation of publicly available data using geographic information system tools is presented in this study. The outcome is a geohazard map presenting reported and predicted geohazards including tectonics and volcanism, rock subsidence, expansive and collapsible soils and slope instability, which summarize all available information for further interpretation. The 1:2.500.000 scale composite geohazard main map provides a valuable tool for initial assessment and review in early planning stages of land development projects. ARTICLE HISTORY

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Distribution and composition of salts in sand dunes overlying salt flats of coastal desert, Saudi Arabia

Cited by 3 publications

References 8 publications

Anti-Microbial, Anti-Oxidant, and α-Amylase Inhibitory Activity of Traditionally-Used Medicinal Herbs: A Comparative Analyses of Pharmacology, and Phytoconstituents of Regional Halophytic Plants’ Diaspora

Anti-Microbial, Anti-Oxidant, and α-Amylase Inhibitory Activity of Traditionally-Used Medicinal Herbs: A Comparative Analyses of Pharmacology, and Phytoconstituents of Regional Halophytic Plants’ Diaspora

Untitled

Geohazards of Saudi Arabia

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