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Paper Information

Journal:   JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN   Summer 2000 , Volume 11 , Number 3; Page(s) 175 To 180.
 
Paper: 

CHANGES IN GLUTATHIONE S-TRANSFERASE ACTIVITY AND ZEARALENONE CONTENT IN SUSCEPTIBLE AND TOLERANT WHEAT HEADS INOCULATED WITH FUSARIUM GRAMINEARUM, THE CAUSAL AGENT OF FUSARIUM HEAD SCAB

 
 
Author(s):  MOHAMMADI M., ALAMEH A.*, KHOURSANDI H.
 
* Department of biochemistry, Faculty of Medical Sciences, Tarbiat Modarres University,Tehran
 
Abstract: 
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Glutathione S-transferase (GST) activity pattern was determined in tolerant (cv. Sumai#3) and susceptible (cv. Falat) wheat heads inoculated with Fusarium graminearum, the causal agent of head scab disease (FHB), during various developmental stages. GST specific activity exhibited a transient pattern in Sumai#3 reaching a maximum level at the milk stage and declining thereafter. GST level in Sumai#3 was three times greater than that in the susceptible cultivar. Thin layer chromatography and densitometry were used to measure zearalenone (ZEN) content in FHB-inoculated wheat heads. Zearalenone concentration reached a maximum level in Sumai#3 at the milk stage and thereafter it declined. ZEN content in the susceptible wheat heads continued to increase and reached a maximum level at the ripening stage. There seems to be a correlation between the increased GST activity and significantly lower ZEN production in the tolerant wheat heads.

 
Keyword(s): FUSARIUM GRAMINEARUM, FUSARIUM HEAD SCAB, DISEASE RESISTANCE, GLUTATHIONE-S-TRANSFERASE
 
References: 
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