Fatty Acids Analysis and Chemotaxonomic Considerations of Malvoideae (Malvaceae) Species

Fernandes, Diégina Araújo; Chaves, Otemberg Souza; Teles, Yanna Carolina Ferreira; Agra, Maria de Fátima; Vieira, Maria Aparecida Ribeiro; Silva, Paulo S. S. da; Marques, Márcia Ortiz Mayo; Souza, María de Fátima Vanderlei de

doi:10.21577/0100-4042.20170668

Cited by 2 publications

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“…It has antibacterial and tyrosinase activity, being used in formulations for skin treatment (Nazzaro-Porro, 1987). The utility of seed FA pro les as taxonomic markers has been often observed, as in Pinaceae (Wolff et al, 2001) and Malvaceae (Fernandes et al, 2021). Mayworm and Salatino (2002) observed that the distribution of seed FA characterizes species of Qualea and Vochysia (Vochysiaceae), irrespective of the geographic location of samples of the same species.…”

Section: Discussionmentioning

confidence: 99%

Evolution and taxonomic meaning of seed fatty acid profiles of Campomanesia (Myrtaceae)

Kilsztajn,

Pereira,

Kubo

et al. 2024

Preprint

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The present work aimed to determine the fatty acid (FA) composition of seed oils of Campomanesia (Myrtaceae), a genus with approximately 45 species restricted to South America. The work aimed also to evaluate the systematic bearing of FA profiles, as well as their degree of congruence with phylogeny. Seeds of Psidium guajava and seven species of Campomanesia were collected from at least two individuals from distinct populations. The seed oils were extracted and the methyl esters of the FA were analyzed by gas chromatography and mass spectrometry. Nucleotide sequences from GenBank of the same species, regarding the internal transcribed spacer of ribosomal DNA (ITS), were used for phylogenetic analysis. Seed FA profiles were distinct, comparing Campomanesia and Psidium guajava; linoleic acid predominates in the seed oil of the latter species, while saturated and mono-unsaturated FA predominate in the seed oil of Campomanesia. A high similarity of FA profiles was noted, when comparing specimens of the same species. With few exceptions, cluster and principal component analyses based on FA profiles were congruent with phylogeny based on ITS sequences. Distribution of seed FA supports the non-monophyletic status of the “C. xanthocarpa complex”. Reconstruction of ancestral character states revealed distinct evolutionary trajectories of FA profiles toward differentiation of Campomanesia clades, all of them leading to decreased proportions of unsaturated FA.

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Section: Discussionmentioning

confidence: 99%

Evolution and taxonomic meaning of seed fatty acid profiles of Campomanesia (Myrtaceae)

Kilsztajn,

Pereira,

Kubo

et al. 2024

Preprint

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Sidastrum paniculatum (L.) Fryxell (Malvaceae): A Promising Source of Bioactive Sulfated Flavonoids Against Aedes aegypti L

et al. 2022

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Aedes aegypti L. is known as the most relevant vector mosquito for viruses such as yellow fever, chikungunya, dengue, and Zika, especially in places with unplanned urbanization, and erratic water supply. Plants used in folk medicine have become a useful source of active compounds with the potential to control the dissemination of Ae. aegypti. Compounds isolated from Malvaceae sensu lato have been previously reported as larvicides, repellents, and insecticides. Recent studies have demonstrated the anti Ae. aegypti activity of sulfated flavonoids, an uncommon type of flavonoid derivatives. This research reports the phytochemical investigation of Sidastrum paniculatum (L.) Fryxell, a Malvaceae species with the potential against Ae. aegypti. Chromatographic procedures resulted in the isolation of the compounds: stearic acid (1), N-trans-feruloyltyramine (2), acacetin (3), apigenin (4), tiliroside (5), along with the sulfated flavonoids: wissadulin (6), 7,4′-di-O-methyl-8-O-sulfate flavone (7), yannin (8), beltraonin (9a), 7-O-sulfate isoscutellarein (paniculatumin) (9b), and condadin (10). This is the first report of compound 7-O-sulfate isoscutellarein (9b). The structures were elucidated by spectroscopic analysis (NMR, LC-HRMS and FT-IR). The sulfated flavonoids identified were submitted to a ligand-based and structure-based virtual screening against two targets: 1YIY (from adult Ae. aegypti) and 1PZ4 (from Ae. aegypti larvae). The results indicated that when the O-sulfate group is bearing the position 7, the structures are potentially active in 1PZ4 protein. On the other hand, flavonoids with the O-sulfate group bearing position 8 were showed to be more likely to bind to the 1YIY protein. Our findings indicated that S. paniculatum is a promising source of sulfated flavonoids with potential against Ae. aegypti.

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Fatty Acids Analysis and Chemotaxonomic Considerations of Malvoideae (Malvaceae) Species

Cited by 2 publications

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Evolution and taxonomic meaning of seed fatty acid profiles of Campomanesia (Myrtaceae)

Evolution and taxonomic meaning of seed fatty acid profiles of Campomanesia (Myrtaceae)

Sidastrum paniculatum (L.) Fryxell (Malvaceae): A Promising Source of Bioactive Sulfated Flavonoids Against Aedes aegypti L

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