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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Leaf cuticular waxes of Tanaecium (Bignonieae, Bignoniaceae): Chemical composition and taxonomic implications

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Carvalho, Juliana C. S. [1] ; Fraza, Annelise [1] ; Lohmann, Lucia G. [1] ; Ferreira, Marcelo J. P. [1]
Total Authors: 4
[1] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Biochemical Systematics and Ecology; v. 98, OCT 2021.
Web of Science Citations: 0

Tanaecium Sw. emend L.G. Lohmann (Bignonieae, Bignoniaceae, Lamiales) is a genus of Neotropical lianas comprising 21 species distributed from Mexico through Argentina. Despite the medicinal and economic importance of several species of the genus, little is still known about the phytochemistry and chemical composition of foliar cuticular waxes of members of Tanaecium. In this study, we extracted the lipophilic compounds of diverse specimens of seventeen species of Tanaecium and four species of the closely related genus Fridericia Mart. Derivatized compounds were identified by gas chromatography (CG) coupled with mass spectrometry (MS) and by comparison with standards. Relative abundances were estimated and investigated by statistical methods (multivariate and cluster analyses). Leaf cuticular waxes were composed by n-alkanes, fatty acids, primary alcohols, terpenoids, and steroids with n-alkanes C-29, C-31, and C-33 representing the major constituents in addition to octacosanol, beta-sitosterol, ursolic, montanic, and palmitic acids. Multivariate analyses of surface compounds supported earlier morphological and molecular data, corroborating the recent placement of some species within Tanaecium and providing sufficient characters to clearly distinguish members of Tanaecium and Fridericia. (AU)

FAPESP's process: 12/50260-6 - Structure and evolution of the Amazonian biota and its environment: an integrative approach
Grantee:Lúcia Garcez Lohmann
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 11/50859-2 - Systematics of the tribe Bignonieae (Bignoniaceae)
Grantee:Lúcia Garcez Lohmann
Support Opportunities: Regular Research Grants
FAPESP's process: 15/10914-5 - Phylogeny, taxonomic revision, floral evolution and biogeography of Tanaecium Sw. (Bignonieae, Bignoniaceae)
Grantee:Annelise Frazão Nunes
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/11110-5 - Monograph of Tanaecium Sw. emend L.G. Lohmann (Bignonieae, Bignoniaceae)
Grantee:Annelise Frazão Nunes
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 14/21593-2 - Baccharis L. (Asteraceae) and endophytic fungi: secondary metabolites and biological activities
Grantee:Marcelo José Pena Ferreira
Support Opportunities: Regular Research Grants