GrainGenes Reference Report: PYC-39-1023
Reference
PYC-39-1023
Title
Changes in ferulic acid and lipid content in aphid-infested barley
Journal
Phytochemistry
Year
1995
Volume
39
Pages
1023-1026
Author
Cabrera H Munoz O Zuniga G Corcuera L Argandona V
Abstract
Aphid infestation reduced the susceptibility of barley cultivars to new infestations The intrinsic growth rate of aphids was lower in the populations reared on previously infested plants, than in populations reared on barley without previous infestation Changes in the content of ferulic acid, and other aromatic compounds and lipids, were detected in barley seedlings infested by the aphid, Schizaphis graminum Ferulic acid concentration increased from 4 to 14 micromole kg-1 fresh wt, as a function of infestation level by aphids Survival of aphids reared with diets containing this compound was lower than the controls Aphid survival at 24 hours was under 58% and 40% in diets with 10 and 20 micromolar ferulic acid, respectively In diets without the compound, survival was 84%. Analysis of alicyclic and aliphatic compounds in extracts of infested and non-infested barley plants showed differences in the relative concentrations of compounds. Our results suggest that the increase of ferulic acid induced by initial infestation may protect the plant against new infestations. Changes in lipid concentrations could be an acclimatization response of the plant to water-stress caused by the aphids.
Keyword
[ Hide all but 1 of 9 ] biosynthesis ferulic-acid hordeum vulgare insect-pests leaves lipid pest-resistance plant composition schizaphis-graminum
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: PYC-39-1023
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||