Archives of Phytopathology and Plant Protection (2017) 50, 84-96

Subhalaxmi Mohapatra and Bhabatosh Mittra (2017)
Alleviation of Fusarium oxysporum induced oxidative stress in wheat by Trichoderma viride
Archives of Phytopathology and Plant Protection 50 (1-2), 84-96
Abstract: Trichoderma viride (Pers.) pre-inoculated wheat seedlings infected with Fusarium oxysporum Schlecht. (co-stressed) did not show wilting symptoms compared to Fusarium infected seedlings. Antagonistic activity of T. viride could be demonstrated against Fusarium infection by dual culture experiment. After seven days post infection, morphological and physiological parameters such as, root and shoot length, fresh and dry weight, relative water content, total soluble protein, total chlorophyll and carotenoid contents were observed to be increased in co-stressed compared to Fusarium infected seedlings. Accumulation of hydrogen peroxide was enhanced in Fusarium infected tissues compared to co-stressed. Trichoderma mediated activation of antioxidant enzymes such as, catalase, guaiacol peroxidase, ascorbate peroxidase, superoxide dismutase in co-stressed seedlings indicated their involvement in enhanced resistance against Fusarium infection, which is suggestive of playing crucial role in mitigating cellular toxicity developed due to excess H₂O₂. Thus, Trichoderma pre-inoculation protected wheat against Fusarium infection by stabilising oxidative stress.
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Fusarium oxysporum
Trichoderma viride (antagonist)	Fusarium oxysporum