Volatile Profiles and DNA Barcodes of Myrtaceae Species with Occurrence in the Brazilian Amazon

Author:

dos Santos Edimara L.1,Xavier Júlia Karla A. M.1ORCID,Galvão Paula Luely N.2,Carneiro Nunes Adriana R.3,Alegria Oscar Victor C.3,Moreira Edith Cibelle O.4,Maia José Guilherme S.1,Setzer William N.5,Figueiredo Pablo Luis B.6,da Silva Joyce Kelly R.1

Affiliation:

1. Programa de Pós-graduação em Química UFPA Universidade Federal do Pará Belém 66075-900 Brazil

2. Programa de Bolsas de Iniciação Científica UFPA Universidade Federal do Pará Belém 66075-900 Brazil

3. Centro de Genômica e Biologia de Sistemas UFPA Universidade Federal do Pará Belém 66075-900 Brazil

4. Instituto de Estudos em Saúde e Biológicas Universidade Federal do Sul e Sudeste do Pará Marabá 68501-970 Brazil

5. Aromatic Plant Research Center Lehi UT 84043 USA

6. Laboratório de Química de Produtos Naturais UEPA Universidade do Estado do Pará Belém 66087-662 Brazil

Abstract

AbstractMyrtaceae family includes many species with taxonomic challenges, making it one of the most complex families to identify. This study used DNA barcoding to find molecular markers for species authentication based on the Myrtaceae family‘s chemical composition and genetic diversity. Essential oils and genetic material were extracted from the leaves of six different species: Eugenia uniflora, E. patrisii, Myrcia splendens, Psidium guajava, P. guineense, and Psidium sp. The samples were analyzed based on compound classes and grouped into two categories. Group I included samples with high amounts of oxygenated sesquiterpenes (3.69–76.05 %) and fatty acid derivatives (0.04–43.59 %), such as E. uniflora, Myrcia splendens, and E. patrisii. Group II included samples P. guajava, P. guineense, and Psidium sp., which had a significant content of monoterpene hydrocarbons (0.69–72.35 %), oxygenated sesquiterpenes (8.06–68.1 %), phenylpropanoids (0.45–22.59 %), and sesquiterpene hydrocarbons (0.27–21.84 %). The PsbA‐trnH gene sequences had a high genetic variability, allowing the species to be distinguished. A phylogenetic analysis showed two main clusters with high Bootstrap values corresponding to the subtribes Eugeniineae, Myrciinae, and Pimentinae. The results suggest a weak correlation between genetic and chemical data in these Myrtaceae species.

Funder

Aromatic Plant Research Center

Publisher

Wiley

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