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Effects of Phoracantha recurva Newman, 1840 (Coleoptera: Cerambycidae) attacks on the content and chemical composition of essential oils of Eucalyptus grandis leaves and its clone 977 and evaluation of their potential bioactivity against xylophagous organisms (fungi and insects)

Messoudi Laila, Rohi Latifa, Amusant Nadine, Ghanmi Mohamed, Satrani Badr, Maatouf Noureddin. 2017. Effects of Phoracantha recurva Newman, 1840 (Coleoptera: Cerambycidae) attacks on the content and chemical composition of essential oils of Eucalyptus grandis leaves and its clone 977 and evaluation of their potential bioactivity against xylophagous organisms (fungi and insects). International Journal of Academic Studies, 3 (6) : pp. 104-128.

Journal article ; Article de recherche ; Article de revue à comité de lecture Revue en libre accès total
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Abstract : Clonal eucalyptus are highly valued in Morocco and in the Mediterranean basin for the production of industrial wood, but nothing is known about their ability to resist xylophagous plants. This study aims to investigate the chemical defenses response of eucalyptus trees to artificially attacks by young larvae of Phoracantha recurva by assessing changes in essential oil production and composition of leaves from Eucalyptus grandis and its clone 977. Fungicidal and termicidal essential oil activities were evaluated to value their biocidal properties. In the Northwest region of Morocco, six of vigorous eucalyptus-trees were selected for each wood species studied. In contrast to a control tree without infection, three from each species were artificially infested in three part of the trunk by hatched larvae of P. recurva. After two months, the most important cambial reaction was observed with E. grandis compared to clone 977. For both species, the primary reaction is less important compared to the reaction of deep tissues. The essential oils recovered by hydrodistillation show that the infested trees have the highest average yield. Arian parties are 1.51% and 2.36% respectively for E. grandis and its clone 977, after infestation, we can observe a decrease of the production of essential in the leaves, respectively 1% and 1.5% for E. grandis and its clone 977. The analysis of the chemical composition by GC-MS method of essential oils shows that the leaves of infested trees of E. grandis and its clone 977, have specific constituents resulting from infestation such as Endo-fenchol, trans-carveol, Nerol and Spathulenol. Equally, this analysis revealed that the attacked trees hemi-synthesized more components compared to their controls. However, the evaluation of fungicidal and termiticidal activities showed that the essentials oil of the clone 977 is more active compared to the parental species E. grandis.

Mots-clés Agrovoc : Eucalyptus grandis, Cerambycidae, Ravageur des plantes, Insecte xylophage, Huile essentielle, Biopesticide, Fongicide, Isoptera

Mots-clés géographiques Agrovoc : Maroc, Région méditerranéenne

Mots-clés complémentaires : Phoracantha recurva

Mots-clés libres : Phoracantha recurva,, Eucalyptus grandis, Essential oil, Fungicide, Termicide

Classification Agris : H10 - Pests of plants
K70 - Forest injuries and protection
H20 - Plant diseases

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Messoudi Laila, Université Hassan 2 (MAR)
  • Rohi Latifa, Université Hassan 2 (MAR)
  • Amusant Nadine, CIRAD-ES-UMR Ecofog (GUF)
  • Ghanmi Mohamed, Centre de recherche forestière (MAR)
  • Satrani Badr, Centre de recherche forestière (MAR)
  • Maatouf Noureddin, Centre de recherche forestière (MAR) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/588714/)

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