ISSN: 0973-7510

E-ISSN: 2581-690X

Asma A. Al-Huqail, Faheema Khan, Nora Al-Zahim and Nagwa Mohamed Aref
1Department of Botany and Microbiology, College of Science, King Saud University 11495 Riyadh, P.O. Box 22452, Saudi Arabia.
J Pure Appl Microbiol. 2014;8(1):825-842
© The Author(s). 2014
Received: 09/11/2013 | Accepted: 16/12/2013 | Published: 28/02/2014

Plants have been used as medicines since the time immemorial, among which Olea europaea products are widely available. Six essential oil extracts were tested for antiviral activities in Datura metel. The selected oils were Olive Leaf Extract (OLExt), Cinnamon, Clove, Black seed, Cedar, and Walnut oil. Datura metel was used as model host for TMV strain. The highest antiviral activity was observed in OLExt triggering physiological markers in Datura metel and showing reduced number and size of necrotic local lesion. Gas chromatography-mass spectroscopy (GC-MS) revealed the presence of three main compounds Iridoid glycosides, polysaccharides and phenolic acids in OLExt. Datura leaves were further analyzed for physiological markers. Among amino acids; alanine and serine found increased along with a significant rise in glutamine up to 7.16 mol/Kg DWT and methionine 0.128 Kg DWT in OLExt treated. There was an obvious increase in the lead, zinc, Chlorophyll A (from 1.75 to 1.93 mg/gm), total protein (from 2.8 to 3.12 mg/gm) and DNA (from 273.52 to 313.09 mg/gm). Fixing nucleus activity was assessed by comet assay in the value of tail moment unit from 18.870 in TMV to 12.314. These physiological markers were found to be parameters for virus host interaction in plant defense relay on Iridoids as an antiviral compound in OLExt.


Virus host interaction, Phyto active materials, Antiviral activity, TMV, Physiological Markers, Iridoids, Immunizing plant

Article Metrics

Article View: 916

Share This Article

© The Author(s) 2014. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.