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Chemical Basis for the Antifeedant Activity of Natural Hydroxamic Acids and Related Compounds
(2004)
Natural hydroxamic acids and related compounds derived from the 1,4-benzoxazin-3-one structure show antifeedant activity against the aphid Rhopalosiphum padi. This antifeeding activity is based on the electrophilic character ...
Hydroxamic acids affecting barley yellow dwarf virus transmission by the aphid Rhopalosiphum padi
(1991)
2,4‐Dihydroxy‐7‐methoxy‐1,4‐benzoxazin‐3‐one (DIMBOA), a hydroxamic acid (Hx) occurring in wheat, was shown to deter feeding by the aphid Rhopalosiphum padi (L.), and to reduce BYDV transmission to the plant. Dual choice ...
Costs and benefits of hydroxamic acids-related resistance in winter wheat against the bird cherry-oat aphid, Rhopalosiphum padi L.
(Association of Applied Biologists, 1996)
Estimations of infestation by the bird cherry-oat aphid (Rhopalosiphum padi) as well as measurements of grain yield in 26 Hungarian winter wheat cultivars under field conditions were correlated with the concentration of ...
Presence of a hydroxamic acid glucoside in wheat phloem sap, and its consequences for performance of Rhopalosiphum padi (L.) (Homoptera: Aphididae)
(Kluwer Academic Publishers-Plenum Publishers, 1994)
Phloem sap of wheat seedlings differing in whole leaf hydroxamic acid (Hx) concentrations was collected by cutting stylets of feeding aphids. DIMBOA-glucoside was the only Hx-related product found. Concentration of ...
Effect of hydroxamic acids from cereals on aphid cholinesterases
(1993)
2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), a hydroxamic acid involved in the resistance of wheat to the aphid Rhopalosiphum padi, and known to react with serine and cysteine residues, inactivated acylcholinesterases ...
Effects of DIMBOA on detoxification enzymes of the aphid Rhopalosiphum padi (Homoptera: Aphididae)
(Elsevier Ltd, 2003)
The presence of glutathione transferases and esterase activity was investigated in Rhopalosiphum padi and the effects of the cereal hydroxamic acid, 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) on these detoxification ...
Hydroxamic acid glucosides in honeydew of aphids feeding on wheat
(Kluwer Academic Publishers-Plenum Publishers, 1992)
DIMBOA glucoside (2-O-/gb-D-glucopyranosyl-4-hydroxy-7-meth-oxy-1,4-benzoxazin-3-one), the main hydroxamic acid (Hx) in intact wheat plants, was detected in the honey dew of Rhopalosiphum padi feeding on seedlings of six ...
Occurrence of diboa in wild Hordeum species and its relation to aphid resistance
(1991)
The secondary metabolise 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) was found in seedlings of wild Hordeum species, but not of cultivated barley (Hordeum vulgare). DIBOA levels correlated negatively with performance of the ...
Allocation of herbivory-induced hydroxamic acids in the wild wheat Triticum uniaristatum
(Birkhauser Verlag Basel, 1998)
We characterized the induction of hydroxamic acids (Hx) by aphid infestation in the wild wheat Triticum uniaristatum by addressing the following questions: i) Do different leaves have similar responses to aphid damage?, ...
Resistance to the aphids Sitobion avenae and Rhopalosiphum padi in Gramineae in relation to hydroxamic acid levels
(1990)
Aribiotic resistance to the aphid Sitobion avenae was assessed in relation to levels of hydroxamic acids (Hx) in a wide genetic range of cultivars and species of Triticum. Within hexaploid and tetraploid Triticum material, ...