Suppression of Cucumber mosaic virus by wind processing and Fusarium equiseti GF19-1
Suppression of Cucumber mosaic virus by wind processing and Fusarium equiseti GF19-1
Mohsen M. Elsharkawy1, Salem H. Homayed1, Mohamed M. Elsawy2 and Amr A. Khedr1
ABSTRACT
Background: Cucumber mosaic caused by Cucumber mosaic virus (CMV) is a serious threat to crop
production all over the world.
Objective: The aim of the current investigation was to evaluate the potential of fan-forced wind and
the growth promoting fungus, Fusarium equiseti GF 19-1, as novel and safe management strategies
against the invasion of CMV in cucumber plants.
Methods: The fan was operated two times per day (8:00 am and 18:00 pm, each time for 30 min).
Moreover, cucumber plants were treated with cell free filtrate (CF) of GF 19-1 at 1 day before virus
inoculation.
Results: The wind velocity (2.6 m/s) resulted in decreased virus severity and titer compared with the
control. However, the potential of wind velocity lower or higher than 2.6 was less effective on CMV.
Additionally, the severity and titer of CMV were significantly reduced in GF19-1 treated plants in
comparison with the control. Quantitative real-time PCR results exhibited increased transcription
levels of pathogenesis related genes, chitinase, PAL1 and LOX1.
Conclusion: In cucumber, treatments with artificially generated wind and root colonizing F. equiseti
GF19-1 or its CF elicited induced resistance against CMV infection, leading to a restriction of
pathogen propagation and disease development.
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January 2019
Vol. 5, Pages 1-141
