<p>The Amazon rainforest is a critical ecosystem renowned for its biodiversity and substantial contributions to the global climate system. Among the various processes occurring within this environment, the emission of volatile organic compounds (VOCs) plays diverse roles, including functioning as plant defense mechanisms against herbivores and pathogens, facilitating ecological interactions, and providing potential applications for chemotaxonomy. This study examined the VOCs profiles of forest species in Central Amazonia to assess their chemotyping potential. Samples were collected from permanent plots at the Tropical Silviculture Experimental Station (Amazonas, Brazil), and a thermal desorption gas chromatography–mass spectrometry system was used to detect the compounds. A total of 28 volatile were identified, encompassing monoterpenes, sesquiterpenes, aldehydes, alcohols, isoprenes, acids, and heterocyclic aromatics. The Burseraceae family presented the greatest diversity of compounds, with compounds such as α-pinene, β-pinene, d-limonene, α-copaene, and α-bergamotene, whereas the Sapotaceae family displayed lower variability, represented primarily by benzaldehyde and hexanal. VOCs profiles demonstrate significant potential as an alternative tool in chemotaxonomy, contributing to a deeper understanding of the chemical diversity and ecological importance of Amazonian species. Future research will be conducted to better explore the ecological interactions of volatile compounds and their implications.</p>

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Exploration of volatile organic compounds (VOCs) from trees in Central Amazonian, Brazil

  • Valdiek da Silva Menezes,
  • Kolby Jeremiah Jardine,
  • Cristiano Souza do Nascimento,
  • Luani Rosa de Oliveira Piva,
  • Flavia Machado Durgante,
  • Adriano José Nogueira Lima,
  • Niro Higuchi

摘要

The Amazon rainforest is a critical ecosystem renowned for its biodiversity and substantial contributions to the global climate system. Among the various processes occurring within this environment, the emission of volatile organic compounds (VOCs) plays diverse roles, including functioning as plant defense mechanisms against herbivores and pathogens, facilitating ecological interactions, and providing potential applications for chemotaxonomy. This study examined the VOCs profiles of forest species in Central Amazonia to assess their chemotyping potential. Samples were collected from permanent plots at the Tropical Silviculture Experimental Station (Amazonas, Brazil), and a thermal desorption gas chromatography–mass spectrometry system was used to detect the compounds. A total of 28 volatile were identified, encompassing monoterpenes, sesquiterpenes, aldehydes, alcohols, isoprenes, acids, and heterocyclic aromatics. The Burseraceae family presented the greatest diversity of compounds, with compounds such as α-pinene, β-pinene, d-limonene, α-copaene, and α-bergamotene, whereas the Sapotaceae family displayed lower variability, represented primarily by benzaldehyde and hexanal. VOCs profiles demonstrate significant potential as an alternative tool in chemotaxonomy, contributing to a deeper understanding of the chemical diversity and ecological importance of Amazonian species. Future research will be conducted to better explore the ecological interactions of volatile compounds and their implications.