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Germination and In Vitro Propagation of Gundelia tournefontii as an Important Medicinal Plant

Shatnawi Mohamad, Majdalawi Majid, Shahrour Wesam, Abu-Zahra Taleb R., Al-Tawaha Abdel Rahman

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 1

57--64

EN

Medicinal plants are important sources of medical and many other pharmaceutical goods. The conventional propagation scheme is the main means of proliferation and takes a long period of time because of poor germination and also low clonal uniformity. Rapid shoot multiplication of Gundelia tournefontii was attained from meristems on Murashige and Skoog (MS) basal medium containing 6-Benzyladenine (BAP) or kinetin, with the adding of 30 g/L sucrose. The highest number of new microshoots per explant (9.2) was attained on the MS medium enhanced with BAP and 0.05 mg/L IBA. After 13 to 14 days, microhoots started rooting on the MS medium enhanced either Indole3-butyric acid (IBA), Indole-3-acetic acid (IAA), or Naphthalene acetic acid (NAA) with the addition of 30 g/L sucrose. Using 100 to 300 ppm Gibbreline GA3 resulted in an increase in germination percentage when soaking with GA3 for 12 hours. Gamma radiation had a significant effect on the growth of the in vitro explants. Gamma radiation had a significant effect on the germination percentage of G. tournefontii seeds. The in vitro propagation plant of G. tournefontii plants could be used for the marketable clonal propagation of this important species or for future studies.

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Effect of Salinity on Germination and Root Growth of Jordanian Barley

Awad Ayah, Odat Nidal, Abu-Romman Saeid, Hasan Maen, Al-Tawaha Abdel Rahman

Journal of Ecological Engineering

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2021

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Vol. 22, nr 1

41--50

EN

The fundamental aim of this study was to investigate the growth responses of selected Jordanian cultivated barley (Hordeum vulgare L.) genotypes to the salinity stress. Twenty-six landraces and two recent cultivars were subjected to four levels of salinity (0, 50, 100 and 200 mM NaCl). The salt stress was found to influence the majority of germination ability such as germination % which ranged from about 80% to 100% (One-way ANOVA; p ≤ 0.05). Moreover, germination was statistically affected in correspondence to exposure time to salinity and in relation to genotypic composition of studied barley (two-row vs. six-row accessions) (Two-Way ANOVA; p ≤ 0.05). Early seedling growth traits were also found to decline with increasing salinity stress. Moreover, according to the growth parameters genotypes, M’ 1595, M’ 1593, Ir 1558, Ir 1631, Ir 1639, Mf 1545, and Mf 1548 were found to have better performance than others. On the other hand, the genotypes M’ 1593, M’ 1594, M’ 1595, Ir 1558, Ra 1552, Ra 1611, Mf 1616, Mf 1617, and Ma 1592 were most affected genotypes by salinity. The results of this study lead to the conclusion that the response to the salinity stress is complex, yet the comprehensive results found in this study provide a foundation for deeper exploration of diversity as well as the gene–trait relationships and their utilization in future barley improvement.

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Antimicrobial Activity and Micropropagation of Some Rare and Endangered Plants of Jordan

Shatnawi Mohamad, Abubaker Samih, Odat Nidal, Al-Tawaha Abdel Rahman, Majdalawi Majdi

Journal of Ecological Engineering

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2021

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Vol. 22, nr 6

151--158

EN

The medicinal plants of Jordan are under threat due to several factors of habitat perturbation. Some of these factors include ruinous over-harvesting, climate change, competition and invasion. In this study, the authors employed a reliable method for micropropagation and assessment of antimicrobial activity of some important medicinal plants of Jordan. Seeds were surface sterilized and germinated on agar water media, and then shoots were cultured on Murashige and Skoog (MS) medium with the addition of 3% sucrose. In order to generate enough plant material, microshoots were transferred after fourteen days onto hormone free MS medium. Among all studied plants, it was found that the Achellia millefolium and Moring perigrina plants successfully multiplied in vitro containing different 6-benzyl amino purine (BA). For potential antimicrobial activity, the ex vitro (field leaf plants) and in vitro (plantlet) extracts were evaluated against some bacteria strains using ethanolic extracts. Both ex vitro and in vitro plants extracts showed the antimicrobial activity against the microorganism tested. The results from the study suggest that these two plants showed good antimicrobial activity against the different tested bacteria.

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Effect of Heavy Metal on the In vitro Growth of Paronchia argentea and its Antimicrobial Activity

Shatnawi Mohammad, Osman Nahid Abd Elhamid, Shibli Rida, Odat Nidal, Al-Tawaha Abdel Rahman, Qudah Tamara, Majdalawi Majdi

Ecological Engineering & Environmental Technology

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2021

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Vol. 22, iss. 3

142--151

EN

Paronchia argentea is traditionally being used for medicinal purposes in Jordan. The current investigation was designed to check the in vitro efficacy of in vitro and ex vitro P. argentea against selected bacterial and fungal strains. The antimicrobial properties of in vitro plantlets and field (ex vitro) plant extracts of P. argentea were investigated against both bacteria and fungi, after and before heavy metals stress used. In this study, four bacterial species were used: Listeria monocytogen and Staphylococcus aureus (Gram positive bacteria) Salmonella typhimurum and Coronobacter sakazakii (Gram negative bacteria) and Calvularia lunata as a mold. The obtained results revealed that the in vitro grown plantlets with the supplemented of lead (Pb), copper (Cu) or Cobalt (Co) with methanol and aqueous extract showed significant inhibitory activities within zones of inhibition ranging between 6.7-30.0 mm. All extracts of P. argentea had activity against the fungi and bacteria tested. The maximum inhibition zone was found in Staphylococcus aureus (30 mm inhibition zone) in medium supplemented with 0.3 mg/L Cu followed by Calvularia lunata (30.0 mm inhibition zone). The methanolic and aqueous P. argentea extract indicate that the solvent plays an important role in the solubility of the antimicrobial substance and also affects the activity of the microbe. Both field (ex vitro) and tissue culture plant extract showed similar antimicrobial activity. The present study could be used as an approach for the development of new, alternative and cheap antimicrobial drugs, particularly against the infections caused by the tested microbes through the tissue culture technology.