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Abstract Title:

Antiviral activity of Thuja orientalis extracts against watermelon mosaic virus (WMV) on Citrullus lanatus.

Abstract Source:

Saudi J Biol Sci. 2015 Mar ;22(2):211-9. Epub 2014 Sep 28. PMID: 25737655

Abstract Author(s):

Esam K F Elbeshehy, Ehab M R Metwali, Omar A Almaghrabi

Article Affiliation:

Esam K F Elbeshehy

Abstract:

Watermelon mosaic potyvirus (WMV) is considered as an important virus infecting watermelon and causing adverse effects on crop productivity. To overcome this problem one of the main objectives of plant breeders is to make these strains less effective in the ability to infect plants by treatment with plant extracts. Due to the advantages of plant tissue culture, in vitro, in the process of the selection of different cultivars under biotic stress, this study was conducted to achieve this aim by evaluating the effect of three concentrations of Thuja extract on the multiplication of WMV in watermelon by measuring callus fresh weight and soluble proteins (mg g(-1) fresh weight) of healthy and infected hypocotyl explants. Also, WMV was isolated from naturally infected watermelon and characterized as potyvirus by serological and molecular analyses. The isolated virus gave a positive reaction with WMV antiserum compared with other antibodies of CMV, ZYMVand SqMV using DAS-ELISA. RT-PCR, with the specific primer for WMV-cp. gene, yielded 825 base pair DNA fragments. The results that belong to soluble protein analysis indicated that infected hypocotyl explants treated with 6 g L(-1) recorded the highest rate in the number of soluble protein bandscompared with the rest of treatments. As a conclusion of these results, we can recommend to apply the Thuja extract at 6 g L(-1) as a optimum dosage to decrease the infection caused by watermelon mosaic potyvirus.

Study Type : In Vitro Study, Plant Study
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