Towards a phylogenetic classification of the Ocotea complex (Lauraceae): classification principles and reinstatement of Mespilodaphne

Trofimov, Dimitrij; Moraes, Pedro Luís Rodrigues de; Rohwer, Jens G.

doi:10.1093/botlinnean/boz010

Cited by 33 publications

(55 citation statements)

References 40 publications

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“…The lack of taxonomically useful data is matched by the paucity of genetic information. The few molecular studies of this complex (Chanderbali et al, 2001; Trofimov et al, 2019; Trofimov and Rohwer, 2020) have used a small number of molecular markers, providing only limited resolution of the relationships among species, and failing to confidently resolve deeper relationships. Thus, we still have a poor understanding of relationships within the Ocotea complex, which impedes progress in our understanding of the evolution of this early‐diverging and ecologically important lineage.…”

Section: Figurementioning

confidence: 99%

Resolved phylogenetic relationships in the Ocotea complex (Supraocotea) facilitate phylogenetic classification and studies of character evolution

Zuluaga

Werff

Park

et al. 2021

American J of Botany

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Premise The Ocotea complex contains the greatest diversity of Lauraceae in the Neotropics. However, the traditional taxonomy of the group has relied on only three main floral characters, and previous molecular analyses have used only a few markers and provided limited support for relationships among the major clades. This lack of useful data has hindered the development of a comprehensive classification, as well as studies of character evolution. Methods We used RAD‐seq data to infer the phylogenetic relationships of 149 species in the Ocotea complex, generating a reference‐based assembly using the Persea americana genome. The results provide the basis for a phylogenetic classification that reflects our current molecular knowledge and for analyses of the evolution of breeding system, stamen number, and number of anther locules. Results We recovered a well‐supported tree that demonstrates the paraphyly of Licaria, Aniba, and Ocotea and clarifies the relationships of Umbellularia, Phyllostemonodaphne, and the Old World species. To begin the development of a new classification and to facilitate precise communication, we also provide phylogenetic definitions for seven major clades. Our ancestral reconstructions show multiple origins for the three floral characters that have routinely been used in Lauraceae systematics, suggesting that these be used with caution in the future. Conclusions This study advances our understanding of phylogenetic relationships and character evolution in a taxonomically difficult group using RAD‐seq data. Our new phylogenetic names will facilitate unambiguous communication as studies of the Ocotea complex progress.

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Section: Figurementioning

confidence: 99%

Resolved phylogenetic relationships in the Ocotea complex (Supraocotea) facilitate phylogenetic classification and studies of character evolution

Zuluaga

Werff

Park

et al. 2021

American J of Botany

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“…Several phylogenetic studies (Chanderbali et al, 2001; Trofimov et al, 2016, 2019; Rohde et al, 2017; Trofimov and Rohwer, 2020) have shown that Ocotea is polyphyletic, or paraphyletic with respect to all other genera of the named “ Ocotea complex” (in sense of Chanderbali et al, 2001), which includes Aniba Aubl., Endlicheria Nees, Licaria Aubl., Nectandra Rottb., and Pleurothyrium Nees, for instance. Trofimov et al (2019) have reinstated the genus Mespilodaphne Nees & Mart. as a first step toward a phylogenetic classification, therefore transferring to Mespilodaphne eight species that had been positioned in the Neotropical Ocotea .…”

Section: Introductionmentioning

confidence: 99%

Leaf venation ofOcoteaspecies (Lauraceae) from the Reserva Natural Vale, Linhares, Espírito Santo, Brazil

et al. 2021

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“…The intergenic spacer psbA-trnH was highly successful in amplification and the intermediate reactions in sequencing. It is considered a robust marker that allows PCR amplification from diverse plant taxa [49] and special phylogenetic studies in Lauraceae [51][52][53][54].…”

Section: Dna Barcode Analysismentioning

confidence: 99%

Essential Oil Composition and DNA Barcode and Identification of Aniba species (Lauraceae) Growing in the Amazon Region

et al. 2021

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Lauraceae species are widely represented in the Amazon, presenting a significant essential oil yield, large chemical variability, various biological applications, and high economic potential. Its taxonomic classification is difficult due to the accentuated morphological uniformity, even among taxa from a different genus. For this reason, the present work aimed to find chemical and molecular markers to discriminate Aniba species collected in the Pará State (Brazil). The chemical composition of the essential oils from Aniba canelilla, A. parviflora, A. rosaeodora, and A. terminalis were grouped by multivariate statistical analysis. The major compounds were rich in benzenoids and terpenoids such as 1-nitro-2-phenylethane (88.34–70.85%), linalool (15.2–75.3%), α-phellandrene (36.0–51.8%), and β-phellandrene (11.6–25.6%). DNA barcodes were developed using the internal transcribed spacer (ITS) nuclear region, and the matK, psbA-trnH, rbcL, and ycf1 plastid regions. The markers psbA-trnH and ITS showed the best discrimination for the species, and the phylogenic analysis in the three- (rbcL + matK + trnH − psbA and rbcL + matK + ITS) and four-locus (rbcL + matK + trnH − psbA + ITS) combination formed clades with groups strongly supported by the Bayesian inference (BI) (PP:1.00) and maximum likelihood (ML) (BS ≥ 97%). Therefore, based on statistical multivariate and phylogenetic analysis, the results showed a significant correlation between volatile chemical classes and genetic characteristics of Aniba species.

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Towards a phylogenetic classification of the Ocotea complex (Lauraceae): classification principles and reinstatement of Mespilodaphne

Cited by 33 publications

References 40 publications

Resolved phylogenetic relationships in the Ocotea complex (Supraocotea) facilitate phylogenetic classification and studies of character evolution

Resolved phylogenetic relationships in the Ocotea complex (Supraocotea) facilitate phylogenetic classification and studies of character evolution

Leaf venation ofOcoteaspecies (Lauraceae) from the Reserva Natural Vale, Linhares, Espírito Santo, Brazil

Essential Oil Composition and DNA Barcode and Identification of Aniba species (Lauraceae) Growing in the Amazon Region

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