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| Boeni,Bruna De Oliveira; Singer,Rodrigo Bustos. |
| A taxonomic synopsis of Dorstenia (Moraceae) in Rio Grande do Sul (RS), Southern Brazil, is presented. Three species were recorded: D. brasiliensis, D. carautae, a new record for the state of RS, and D. tenuis. All species are described and illustrated through detailed photos of living specimens. A taxonomic key to separate the species, as well as details on distribution, overall phenology, habitat, conservation status and ecology are presented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emygdioa; Lecanium; Morphology; South-America; Taxonomy. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200925 |
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| Mariotti,Kristiane de Cássia; Barreto,Fabiano; Schmitt,Gabriela Cristina; Zancanaro,Ivomar; Dallegrave,Eliane; Singer,Rodrigo Bustos; Leal,Mirna Bainy; Limberger,Renata Pereira. |
| Gunnera (Gunneraceae) forms a complex association with the cyanobacterium Nostoc puctiforme L. Gunnera-Nostoc symbiosis is the only one reported involving a flowering plant, and results in the formation of the neurotoxic amino acid β-N-methylamino-L-alanine (BMAA). The species Gunnera manicata L., for which phytochemical, pharmacological and toxicological studies are lacking, is found in Southern Brazil. Therefore, acute toxicity and the presence of neurotoxic amino acid were investigated in aqueous extracts of G. manicata. The acute toxicity test was conducted by administering aqueous root extract of G. manicata at a concentration of 2000 mg/kg in a single dose orally to Wistar rats. Lethality was monitored daily for 14 days after treatment. The relative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gunnera manicata L; /toxicity; Β-N-methylamino-L-alanine/identification; Neurotoxins/identification; Acute toxicity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300021 |
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| Mariotti,Kristiane de Cássia; Schuh,Roselena Silvestri; Nunes,Jéssica de Matos; Salamoni,Sabrina Pinto; Meirelles,Gabriela; Barreto,Fabiano; Poser,Gilsane Lino Von; Singer,Rodrigo Bustos; Dallegrave,Eliane; Sand,Sueli Teresinha Van Der; Limberger,Renata Pereira. |
| Gunnera perpensa L. (Gunneraceae) is a native South African plant widely used in traditional medicine as an antibacterial and antifungal. In southern Brazil there is the native species called Gunnera manicata L. that also belongs to the Gunneraceae. Nevertheless, there is no information about chemical and pharmacological properties of South American Gunnera species. Therefore this study aimed at assessing the phytochemical and pharmacological profiles of aqueous and methanol Brazilian G. manicata extracts. The results showed that antimicrobial activity in an agar diffusion assay was effective against Staphylococcus aureus and Candida albicans . Phenolic compounds were investigated by liquid chromatography coupled with a tandem mass spectrometer (LC-MS/MS)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gunnera manicata L./phytochemistry; Gunnera manicata L./pharmacognosy; Gunneraceae /pharmacognosy; Gunnera manicata L./extracts/antimicrobial effect; Gunnera manicata L./extracts/antioxidant activity; Gunnera manicata L./extracts/antimicrobial assay. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502014000100015 |
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