Tillandsia usneoides (L.) L. (Bromeliaceae): Aspectos Químicos e Farmacológicos.

Vieira, Bruna Marcella Barbosa; Kaplan, M. A. C.

doi:10.32712/2446-4775.2011.126

Cited by 2 publications

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“…Tillandsia usneoides is a strictly epiphyte species found in abundance throughout the study area (Figure 5H). This species has the most extensive Neotropical distribution among Bromeliaceae and has several use potentials, such as air bioindicators (FIGUEIREDO et al, 2004), ornamental potential, and medicinal properties of which were recorded the presence of ascorbic acid, carotenoids, flavonoids, xanthones, coumarins, and tannins (MANETTI et al, 2009;VIEIRA;CAPLAN, 2011).…”

Section: Resultsmentioning

confidence: 99%

Macambiras and sympatric species of Serra do Jatobá, Milagres, Bahia, Brazil

Souza

Carvalho

Gama

et al. 2021

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Macambira is popularly designated to two species of Bromeliaceae: Bromelia laciniosa and Encholirium spectabile. Both species are xerophilous and have morphological and physiological structures adapted to the semiarid climate. Floristic studies are essential for the knowledge of existing species in certain areas and provide information on diversity, distribution, life forms, and conservation. Sympatry is defined as when two or more populations overlap without crossings between individuals of different species in the same geographical distribution. In this way, the objective of this study was to present the species that occur in sympatry with the macambiras in Serra do Jatobá, municipality of Milagres, Bahia, Brazil. Thirty-seven species belonging to three subfamilies were observed living in sympatry with the macambiras: Bromelioideae (19 spp.), Tillandsioideae (16 spp.), and Pitcairnioideae (2 spp.). The most representative genera of Bromelioideae were Tillandsia (13 spp.) and Hohenbergia (4 spp.). The genera Alcantarea, Bromelia, Cryptanthus, Dyckia, Encholirium, Karawata, and Neoglaziovia, presented only one species each. From the observed species, 70.26% are endemic to Brazil. From these, 32.4% occur exclusively in Bahia. About the status conservation, the species Aechmea disjuncta and Tillandsia milagrensis are considered ‘Endangered’, and Alcantarea nahoumii and Orthophytum rubrum are considered ‘Vulnerable’. The results presented can support conservation studies of these species and, in the future, support the creation of a conservation unit in the inselbergs of Bahia because these environments are maintainers of biodiversity and work as an “oasis” of the Caatinga. Keywords: Bromelia laciniosa, Bromeliaceae, Encholirium spectabile, Floristic studies, Caatinga. Resumo: A macambira é popularmente designada a duas espécies de Bromeliaceae: Bromelia laciniosa e Encholirium spectabile. Ambas as espécies são xerófilas e possuem estruturas morfológicas e fisiológicas adaptadas ao clima semiárido. Estudos florísticos são importantes para o conhecimento das espécies existentes em determinadas áreas e fornecem informações sobre a diversidade, distribuição, formas de vida e conservação. A simpatria é definida quando duas ou mais populações se superpõe sem que ocorram cruzamentos entre indivíduos das diferentes espécies em uma mesma distribuição geográfica. Diante do exposto, o objetivo do trabalho foi apresentar as espécies que ocorrem em simpatria com as macambiras na Serra do Jatobá, município de Milagres, Bahia, Brasil. Foram observadas vivendo em simpatria com as macambiras, 37 espécies pertencentes a três subfamílias: Bromelioideae (19 spp.), Tillandsioideae (16 spp.) e Pitcairnioideae (2 spp.). Os gêneros mais representativos de Bromelioideae foram Tillandsia (13 spp.) e Hohenbergia (4 spp.). Os gêneros Alcantarea, Bromelia, Cryptanthus, Dyckia, Encholirium, Karawata e Neoglaziovia apresentaram apenas uma espécie cada. Das espécies observadas, 70,26% são endêmicas do Brasil. Destas, 32,4% ocorrem exclusivamente na Bahia. Quanto ao nível de ameaça, as espécies Aechmea disjuncta e Tillandsia milagrensis são consideradas ‘Em Perigo’ e Alcantarea nahoumii e Orthophytum rubrum são consideradas ‘Vulneráveis’. Os resultados apresentados podem subsidiar estudos de conservação dessas espécies e, futuramente, apoiar a criação de uma unidade de conservação nos inselbergs da Bahia, pois esses ambientes são mantenedores da biodiversidade e funcionam como “oásis” da Caatinga. Palavras-chave: Bromelia laciniosa, Bromeliaceae, Encholirium spectabile, Estudos florísticos, Caatinga.

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Section: Resultsmentioning

confidence: 99%

Macambiras and sympatric species of Serra do Jatobá, Milagres, Bahia, Brazil

Souza

Carvalho

Gama

et al. 2021

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“…Being used for a long time in the American continent as medicinal plants, the species of the genus Tillandsia have aroused the interest of researchers who have studied the biological properties of their constituents. These studies have demonstrated the presence of compounds with antiangiogenic, antiviral, antitumor, hypoglycemic, and anticancer − activities. Regarding antibacterial activity, it was reported in 1945 that the crude extract of T.…”

Section: Discussionmentioning

confidence: 99%

Isolation and Identification of Flavones Responsible for the Antibacterial Activities of Tillandsia bergeri Extracts

Benfodda

Dunyach-Rémy

et al. 2022

ACS Omega

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Plants are an everlasting inspiration source of biologically active compounds. Among these medicinal plants, the biological activity of extracts from some species of the Tillandsia genus has been studied, but the phytochemistry of the hardy species Tillandsia bergeri remains unknown. The aim of the present study was to perform the first phytochemical study of T. bergeri and to identify the compounds responsible for the antibacterial activity of T. bergeri extracts. Soxhlet extraction of predried and grinded leaves was first performed using four increasing polarity solvents. A bio-guided fractionation was performed using agar overlay bioautography as a screening method against 12 Gram-positive, Gram-negative, sensitive, and resistant bacterial strains. The results showed the inhibition of Gram-positive methicillin-sensitive Staphylococcus aureus ATCC 29213 (MSSA), methicillin-resistant S. aureus N-SARM-1 (MRSA), and Staphylococcus caprae ATCC 35538 by the dichloromethane fraction. A phytochemical investigation led to the isolation and identification by high-resolution mass spectrometry and nuclear magnetic resonance of the two flavones penduletin and viscosine, responsible for this antibacterial activity. For viscosine, the minimum inhibitory concentration (MIC) value is equal to 128 μg/mL against MSSA and is equal to 256 μg/mL against MRSA and S. caprae. The combination of these compounds with vancomycin and cloxacillin showed a decrease in MICs of the antibiotics. Penduletin showed synergistic activity when combined with vancomycin against MSSA (FICI < 0.258) and S. caprae (FICI < 0.5). Thus, unexplored Tillandsia species may represent a valuable source for potential antibiotics and adjuvants.

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Tillandsia usneoides (L.) L. (Bromeliaceae): Aspectos Químicos e Farmacológicos.

Abstract: O presente estudo baseia-se no levantamento de dados da literatura cientifica e convencional, com o objetivo de reunir as informações relevantes à espécie Tillandsia usneoides (Bromeliaceae), relacionadas especificamente ao seu potencial medicinal.

Cited by 2 publications

References 8 publications

Macambiras and sympatric species of Serra do Jatobá, Milagres, Bahia, Brazil

Macambiras and sympatric species of Serra do Jatobá, Milagres, Bahia, Brazil

Isolation and Identification of Flavones Responsible for the Antibacterial Activities of Tillandsia bergeri Extracts

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