&lt;strong&gt;Fourteen new species and two taxonomic notes on Brazilian Myrtaceae&lt;/strong&gt;

Sobral, Marcos; Grippa, Carlos R.; Souza, Marcelo C.; Aguiar, Osny Tadeu de; Bertoncello, Ricardo; Guimarães, Thais B.

doi:10.11646/phytotaxa.50.1.3

Cited by 17 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Myrciaria tenella (cambuí) is a tree belonging to the Myrtaceae family, present in the Amazon, Caatinga, and Atlantic Forest biomes [12]. It has been verified that this species has anti-inflammatory, antimicrobial, and antimutagenic activities due to the presence of flavonoids, steroids, triterpenoids, and saponins [4,13,14].…”

Section: Introductionmentioning

confidence: 99%

Myrciaria tenella (DC.) O. Berg (Myrtaceae) Leaves as a Source of Antioxidant Compounds

et al. 2019

View full text Add to dashboard Cite

Myrciaria species are widely studied to identify their chemical composition and evaluate their biological activity. Since evidence supporting the potential antioxidant and antiproliferative activity of Myrciaria tenella is lacking, the aim of this work was to evaluate these activities in six different leaf extracts: hexane (CHE), chloroform (CCE), ethanolic (CEE), methanolic (CME), aqueous final (CFAE), and only aqueous (CAE). The presence of phenolic compounds, tannin, saponin, and ursolic acid was determined by thin layer chromatography (TLC). CEE, CME, and CFAE showed in vitro antioxidant activity at the initiation, propagation, and termination stages of oxidative damage. Moreover, no toxicity was observed in the 3T3 non-cancerous cell line. On the other hand, all extracts promoted cell death in the tumor cell lines human cervical adenocarcinoma cell line (HeLa) and human stomach gastric adenocarcinoma cell line (AGS). Based on these results, the effect of CEE on the AGS cell line was analyzed using flow cytometry, and necrosis and late apoptosis were observed. Finally, the Caenorhabditis elegans model showed that CEE was able to reduce the basal reactive oxygen species (ROS) level. Ultra-performance liquid chromatography (UPLC) analysis showed rutin as the major compound in CEE. Therefore, Myrciaria tenella fresh leaves may be potential sources of molecules possessing antioxidant and antiproliferative activities.

show abstract

Section: Introductionmentioning

confidence: 99%

Myrciaria tenella (DC.) O. Berg (Myrtaceae) Leaves as a Source of Antioxidant Compounds

et al. 2019

View full text Add to dashboard Cite

show abstract

“…It is further worth mentioning that several new species were found in this region in the last two decades (Sommer & Ferrucci 2004;Lobão et al 2006;Sobral & Couto 2006;Fraga & Aymard 2007;Sobral et al 2012), with new distribution records (Menini Neto et al 2004;Almeida et al 2005;Matozinhos & Konno 2008;Versieux & Wendt 2006), and rare species for Minas Gerais state (Forzza et al 2014), also harboring Besleria brevicalyx G.E.Ferreira & Chautems (Gesneriaceae) (Ferreira et al 2016), endemic to the SR. Considering that 80% of the Atlantic Forest remnants have less than 50 ha (Ribeiro et al 2009), fragments having this extension can be considered rare and deserve attention.…”

Section: Resultsmentioning

confidence: 95%

Vascular epiphytes of the Serra do Relógio: the surprising richness of the seasonal forests in the mountains of Minas Gerais, Southeastern Brazil

et al. 2022

View full text Add to dashboard Cite

Studies conducted on vascular epiphytes in Minas Gerais have revealed high richness in the seasonal semi-deciduous forests (SSF) in comparison with those of other Brazilian states. This study aimed to present a vascular epiphyte checklist of the Serra do Relógio (SR) in the Atlantic Forest of Minas Gerais, in order to analyze the similarity between two areas in different altitudes, as well as to discuss the high richness recorded for this synusia in the SSFs of this state. The survey was performed in two conservation units (CUs) apart from each other approximately 6 km and with elevations varying between ~500 and 1,434 m. The data were obtained from published articles and fieldwork performed between the years 2016 and 2019. We recorded 158 species distributed in 76 genera and 22 families. This richness is greater than those found in some ombrophilous forests, which was an unexpected result due to the high moisture of this phytophysionomy. Although approximately 66% of the species found in the SR are anemochoric and the compared CUs are geographically close, the similarity was only 22%, suggesting that the difference in altitude between the areas and the history of use can impose filters that influence the floristic composition of each one area. These results highlight the importance of preserving the forest remnants in Brazil and creating and maintain CUs to protect them.

show abstract

“…Although Myrcianthes is closely related to the large genus Eugenia L. recent studies have confirmed its individuality and role as a sister group to the rest of the Eugenia clades [ 7 ]. Thanks to recent taxonomic research [ 8 , 9 ], new species belonging to the Myrcianthes genus have been described. Myrcianthes hallii (O. Berg) McVaugh is a medicinal and aromatic species commonly known in Ecuador as “arrayán” [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical Characterization and in Vitro Antibacterial Activity of Myrcianthes hallii (O. Berg) McVaugh (Myrtaceae), a Traditional Plant Growing in Ecuador

et al. 2016

View full text Add to dashboard Cite

Myrcianthes hallii (O. Berg) McVaugh (Myrtaceae) is a plant native to Ecuador, traditionally used for its antiseptic properties. The composition of the hydro-methanolic extract of this plant was determined by submitting it to ultra-high performance liquid chromatography (UHPLC) hyphenated to heated-electrospray ionization mass spectrometry and UV detection. The presence of antimicrobial components prompted us to test the extract against methicillin-resistant and methicillin-susceptible Staphylococcus aureus, multidrug-resistant and susceptible Escherichia coli, Pseudomonas aeruginosa, Enterococcus spp. and Streptococcus pyogenes strains. The chromatographic analysis led to the identification of 38 compounds, including polyphenols and organic acids, and represents the first chemical characterization of this plant. The extract showed modest antibacterial activity against all tested bacteria, with the exception of E. coli which was found to be less sensitive. Whilst methicillin-resistant strains usually display resistance to several drugs, no relevant differences were observed between methicillin-susceptible and resistant strains. Considering its long-standing use in folk medicine, which suggests the relative safety of the plant, and the presence of many known antibacterial polyphenolic compounds responsible for its antibacterial activity, the results show that M. hallii extract could be used as a potential new antiseptic agent. Moreover, new anti-infective biomaterials and nanomaterials could be designed through the incorporation of M. hallii polyphenols. This prospective biomedical application is also discussed.

show abstract

<strong>Fourteen new species and two taxonomic notes on Brazilian Myrtaceae</strong>

Cited by 17 publications

References 0 publications

Myrciaria tenella (DC.) O. Berg (Myrtaceae) Leaves as a Source of Antioxidant Compounds

Myrciaria tenella (DC.) O. Berg (Myrtaceae) Leaves as a Source of Antioxidant Compounds

Vascular epiphytes of the Serra do Relógio: the surprising richness of the seasonal forests in the mountains of Minas Gerais, Southeastern Brazil

Chemical Characterization and in Vitro Antibacterial Activity of Myrcianthes hallii (O. Berg) McVaugh (Myrtaceae), a Traditional Plant Growing in Ecuador

Contact Info

Product

Resources

About