Acta Agronomica Hungarica (2013) 61, 23-35

S.M. Al-Wakeel, M.M.A. Gabr, W.M. Abu-El-Soud and A.M. Saleh (2013)
Coumarin and salicylic acid activate resistance to Macrophomina phaseolina in Helianthus annuus
Acta Agronomica Hungarica 61 (1), 23-35
Abstract: The induction of resistance to charcoal rot disease caused by Macrophomina phaseolina (Tassi) Goidanich in sunflower (Helianthus annuus L.) was studied after seed treatments with coumarin (COU) and salicylic acid (SA) at three different levels (0.3, 1.0 and 3.0 mM). The priming of sunflower seeds with 0.3 mM COU or 1.0 mM SA resulted in decreased disease severity and offered about 50% protection and more than 80% reduction in the length of stem lesions under greenhouse conditions. Both COU and SA treatments induced the accumulation of soluble sugars and phytoalexins, as well as stimulating the activity of β-1,3-glucanase and chitinase.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Macrophomina phaseolina	Sunflower (Helianthus annuus)