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Original Article 
JVS. 2019; 6(1): 67-82


Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus

Shimaa A Khalaf , Mohsen Mohamed Elsharkawy, Samir Armia Sidaros, Shawky A El Kewey, Ayman F Omar, Ali Hamed.

Abstract
Background
Papaya ring spot virus (PRSV) is a major threat to the production of cucurbits all over the world. The sterile fungus GU23-3 is a rhizosphere fungus conferring positive effects on plant growth and health.
Objective
The aim of this study is to evaluate the effects of GU23-3 on cucumber growth and resistance against PRSV.
Methods
Disease severity and virus titer were evaluated in cucumber plants treated with barley grain (BGI) or culture filtrate (CF) of GU23-3 under greenhouse conditions. Additionally, the expression levels of defense genes were assessed by reverse transcription PCR (RT-PCR) analysis.
Results
Both of virus severity and titer were significantly reduced in treated plants in comparison with the control. All growth characters and yield of cucumber plants were increased in GU23-3 treated plants than the control. RT-PCR analysis revealed increased expressions of different pathogenesis related genes (Chitinase, β 1-3 Glucanase, PR1, POX, PAL and LOX) explaining the role of these genes in the mechanism of induced resistance against PRSV by GU23-3.
Conclusion
GU23-3 could be considered a new and alternative strategy to control PRSV infection.

Key words: Papaya ring spot virus; induced resistance; plant growth promoting fungi; cucumber; RT-PCR.


 
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How to Cite this Article
Pubmed Style

SAK, Elsharkawy MM, Sidaros SA, Kewey SAE, Omar AF, Hamed A, . Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . JVS. 2019; 6(1): 67-82.


Web Style

SAK, Elsharkawy MM, Sidaros SA, Kewey SAE, Omar AF, Hamed A, . Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . http://www.j-virol-sci.com/?mno=51819 [Access: January 19, 2020].


AMA (American Medical Association) Style

SAK, Elsharkawy MM, Sidaros SA, Kewey SAE, Omar AF, Hamed A, . Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . JVS. 2019; 6(1): 67-82.



Vancouver/ICMJE Style

SAK, Elsharkawy MM, Sidaros SA, Kewey SAE, Omar AF, Hamed A, . Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . JVS. (2019), [cited January 19, 2020]; 6(1): 67-82.



Harvard Style

, S. A. K., Elsharkawy, M. M., Sidaros, S. A., Kewey, S. A. E., Omar, A. F., Hamed, A. & (2019) Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . JVS, 6 (1), 67-82.



Turabian Style

, Shimaa A Khalaf, Mohsen Mohamed Elsharkawy, Samir Armia Sidaros, Shawky A El Kewey, Ayman F Omar, Ali Hamed, and . 2019. Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . Journal of Virological Sciences, 6 (1), 67-82.



Chicago Style

, Shimaa A Khalaf, Mohsen Mohamed Elsharkawy, Samir Armia Sidaros, Shawky A El Kewey, Ayman F Omar, Ali Hamed, and . "Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus ." Journal of Virological Sciences 6 (2019), 67-82.



MLA (The Modern Language Association) Style

, Shimaa A Khalaf, Mohsen Mohamed Elsharkawy, Samir Armia Sidaros, Shawky A El Kewey, Ayman F Omar, Ali Hamed, and . "Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus ." Journal of Virological Sciences 6.1 (2019), 67-82. Print.



APA (American Psychological Association) Style

, S. A. K., Elsharkawy, M. M., Sidaros, S. A., Kewey, S. A. E., Omar, A. F., Hamed, A. & (2019) Efficacy of the sterile fungus GU23-3 on growth characters of cucumber plants and resistance against Papaya ring spot virus . Journal of Virological Sciences, 6 (1), 67-82.








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