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<p>The vegetable leafminer, <i>Liriomyza sativae</i> Blanchard (Diptera: Agromyzidae), is considered a key pest of melons (<i>Cucumis melo</i> L.) in Brazil. The aim of this study was to identify volatile and phenolic compounds associated with melon resistance to <i>Liriomyza sativae</i> by evaluating whether volatile compounds released by different melon genotypes influence the attractiveness and/or repellency to the pest and by identifying phenolic compounds with potential antibiotic action against it.</p><p>Olfactometer tests revealed that certain genotypes, such as CNPH 06-1047-343, 06-1047-333, and 06-1047-341, displayed low attractiveness to <i>L. sativae</i>, while the Goldex commercial hybrid was more attractive. Gas Chromatography-Mass Spectrometry analyses identified acetic acid and 3-methylfuran in higher relative abundance in the less attractive genotypes. On the other hand, attractive and susceptible genotypes emitted higher concentrations of β-ocymene, cis-β-ocymene, and trans-3-hexenyl acetate. Exclusive compounds in Goldex included 3-hexen-1-ol, α-pinene, linalool, allo-ocimene, neo-allo-ocimene, and sabinene hydrate acetate. In no-choice tests, CNPH 06-1047-333 and CNPH 06-1047-343 showed reduced larval and pupal viability of <i>L. sativae</i>, and they were distinguished by having higher total phenolic compounds in their leaves, such as hydroxybenzoic-hexoside acid, ferulic acid, and vitexin-2”-O-glucoside. The study suggests that the resistance of certain melon genotypes to <i>L. sativae</i> is linked to the emission of repellent volatile compounds and the presence of high levels of phenolics in their leaves.</p> Graphical abstract

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Volatile and phenolic compounds associated with melon resistance to Liriomyza sativae

  • 期刊论文

  • 发表日期：

    2025年12月3日

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  • Jéssica Fontes Vasconcelos,
  • Wenner Vinicius Araújo Saraiva,
  • Lucas De Lima Farias,
  • Paulo Riceli Vasconcelos Ribeiro,
  • José Wagner Da Silva Melo,
  • Tigressa Helena Soares Rodrigues,
  • Vitor Hugo Maues Macedo,
  • Elenilson Godoy Alves Filho,
  • Kirley Marques Canuto,
  • Nívia Da Silva Dias-Pini

摘要

The vegetable leafminer, Liriomyza sativae Blanchard (Diptera: Agromyzidae), is considered a key pest of melons (Cucumis melo L.) in Brazil. The aim of this study was to identify volatile and phenolic compounds associated with melon resistance to Liriomyza sativae by evaluating whether volatile compounds released by different melon genotypes influence the attractiveness and/or repellency to the pest and by identifying phenolic compounds with potential antibiotic action against it.

Olfactometer tests revealed that certain genotypes, such as CNPH 06-1047-343, 06-1047-333, and 06-1047-341, displayed low attractiveness to L. sativae, while the Goldex commercial hybrid was more attractive. Gas Chromatography-Mass Spectrometry analyses identified acetic acid and 3-methylfuran in higher relative abundance in the less attractive genotypes. On the other hand, attractive and susceptible genotypes emitted higher concentrations of β-ocymene, cis-β-ocymene, and trans-3-hexenyl acetate. Exclusive compounds in Goldex included 3-hexen-1-ol, α-pinene, linalool, allo-ocimene, neo-allo-ocimene, and sabinene hydrate acetate. In no-choice tests, CNPH 06-1047-333 and CNPH 06-1047-343 showed reduced larval and pupal viability of L. sativae, and they were distinguished by having higher total phenolic compounds in their leaves, such as hydroxybenzoic-hexoside acid, ferulic acid, and vitexin-2”-O-glucoside. The study suggests that the resistance of certain melon genotypes to L. sativae is linked to the emission of repellent volatile compounds and the presence of high levels of phenolics in their leaves.

Graphical abstract