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Articles by Mohannad G. AL-Saghir
Total Records ( 3 ) for Mohannad G. AL-Saghir
  Mohannad G. AL-Saghir
  Pistacia is an economically important genus because it contains the pistachio crop Pistica vera L. which has edible seeds of considerable commercial importance. The phylogenetic relationships among the species are controversial and not well understood. The phylogeny of Pistacia was revised in detail through the present study. The following taxa are recognized: Pistacia atlantica Desf., Pistica chinensis Bunge subsp. chinensis, Pistica chinensis subsp. falcata (Bess. ex Martinelli) Rech. f., Pistica chinensis subsp. integerrima (J. L. Stew. ex Brandis) Rech. f., Pistica eurycarpa Yalt., Pistica khinjuk Stocks, Pistica lentiscus L. subsp. lentiscus, Pistica lentiscus subsp. emarginata (Engl.) AL-Saghir, Pistica mexicana Humb., Bonpl., and Kunth, P. x saportae Burnat, Pistica terebinthus L., Pistica vera L. and Pistica weinmannifolia Poiss. ex Franch. In conclusion, the study reveals the phylogenetic and taxonomic relationships among Pistacia species. In addition, it shows that the genus is monophyletic and is divided into two sections: section Pistacia and section Lentiscella.
  Mohannad G. AL-Saghir , Duncan M. Porter and Erik T. Nilsen
  Pistacia is an economically important genus because it contains the pistachio, P. vera, which has edible seeds of considerable commercial importance. The evolutionary history of the genus and the taxonomic relationships among the species are equivocal. This study is part of a comprehensive phylogenetic study that has been conducted on this genus in order to refine taxonomic and evolutionary relationships by utilizing different types of data (including morphological, cytological, anatomical and molecular). We aim to investigate the evolutionary and taxonomic relationships among Pistacia species. Here we present the first investigation of the leaf structure in all Pistacia species. The following species were studied: Pistacia aethiopica J.O. Kokwaro, P. atlantica Desf., P. chinensis Bunge, P. eurycarpa Yaltirik, P. falcata Becc. ex Martelli, P. integerrima Stew. ex Brand., P. khinjuk Stocks., P. lentiscus L., P. mexicana HBK, P. mutica Fisch. and Mey., P. palaestina Boiss., P. terebinthus L., P. texana Swingle, P. vera L. and P. weinmannifolia Poiss. ex Franch. Leaflets of P. vera, which have random orientation, were isobilateral, while leaflets of the other species were dorsiventral and were oriented horizontally.
  Mohannad G. AL-Saghir
  In this study we investigate the antibacterial activities of the Cinnamomum cassia (Nees and Th. Nees) Nees ex Blume Bark and Thymus vulgaris L. leaf extracts. Five strains of bacteria, including Bacillus subtilis, Enterobacter aeruginosa, Escherichia coli, Staphylococcus aureus and Staphylococcus epidermidis were used in the antibacterial tests. Results from the antibacterial tests demonstrated that both plant extracts had an excellent inhibitory effect. The MICs (Minimum Inhibitory Concentrations) of the both plant extracts were 250 μg mL-1 against all tested strains. These results suggest that Cinnamomum cassia and Thymus vulgaris are beneficial to human health, having the potential to be used for medical purposes and to be utilized as anti-bacterial additives in food products.
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