3,4-dihydroxyphenylethanol, a potential repelling compound implicated inthe interaction of olive tree-psyllid
2004
Zouiten, N.,Equipe Biotechnologies et Physiologie Vegetales, (Marrakech-Maroc). Laboratoire de Physiologie Vegetale
Euphyllura olivina Costa (Psyllid) is a pest insect causing considerablewastes of crops by provoking the losses of young buds, flower buds andfruits in Olea europaea L. It seems that cultivars influence the ovipositionperformance of Psyllid. A certain degree of resistance to olive Psyllid inyoung and flower buds was associated with higher level of phenolic compoundsand particularly the level of 3,4-dihydroxyphenylethanol (3,4-DHPE). In thisstudy, analysis was performed on the evolution of the level of 3,4-DHPE inyoung and flower buds infested or not by Psyllid and the effects of thiscompound on the oviposition performance and insect mortality on young budsas well as on their phenolic compounds. The infestation by Psyllid decreasedthe level of 3,4-DHPE; this reduction is more pronounced in flower buds incomparison with the young buds (83.9 and 20%, respectively, after 30 days oftreatment). The treatment with 3,4-DHPE arrested the oviposition of Psyllid onyoung buds and induced a higher percentages of the insect mortality. Noqualitative or quantitative changes of bud Phenolic have been induced with3,4-DHPE treatment.
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