Xavier Júlia Karla A M, da Trindade Rafaela C S, Cibelle Moreira Edith, Figueiredo Pablo Luis B, Maia José Guilherme S, Setzer William N, da Silva Joyce Kelly R
Programa de Pós-Graduação em Química, Universidade Federal do Pará, 66075-900, Belém, Brazil.
Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Pará, 66075-900, Belém, Brazil.
Chem Biodivers. 2022 Oct;19(10):e202200337. doi: 10.1002/cbdv.202200337. Epub 2022 Sep 6.
The Ocotea complex accommodates most of the taxonomic diversity of Neotropical Lauraceae with economic importance and biological potential attributed to their essential oils (EOs) and extracts. However, the botanical taxonomy has had limitations due to the difficulty of identifying and delimiting species and genera. The chemical and molecular markers of Ocotea complex species in Pará state, Brazil, were assessed according to their EO compositions and DNA sequences of matK, trnL-trnF, and ITS regions. The multivariate analysis of EOs constituents has classified them into two main clusters characterized by oils rich in (I) terpenoids and phenylpropanoids and (II) sesquiterpenes. We conducted a phylogenetic analysis of species based on DNA barcode sequences on the Bayesian Inference (PP: 0.70-1,0) and Maximum Likelihood (BS: 72-100 %). The comparison between the volatile profiles and phylogenetic data indicates two main groups for these species collected from the Ocotea complex.
奥寇梯木复合体包含了新热带月桂科的大部分分类多样性，这些植物因其精油（EOs）和提取物而具有经济重要性和生物潜力。然而，由于物种和属的鉴定与界定困难，植物分类学存在局限性。根据巴西帕拉州奥寇梯木复合体物种的精油成分以及matK、trnL-trnF和ITS区域的DNA序列，对其化学和分子标记进行了评估。对精油成分的多变量分析已将它们分为两个主要类群，其特征分别为富含（I）萜类化合物和苯丙素类化合物的油以及（II）倍半萜类化合物的油。我们基于贝叶斯推断（PP：0.70 - 1.0）和最大似然法（BS：72 - 100%）的DNA条形码序列对物种进行了系统发育分析。挥发性成分谱与系统发育数据之间的比较表明，从奥寇梯木复合体收集的这些物种主要分为两个类群。
