6 documents found, page 1 of 1
Flora da Reserva Ducke, Estado do Amazonas, Brasil: Hypericaceae
Martins,Milena Ventrichi; Shimizu,Gustavo Hiroaki; Bittrich,VolkerRESUMO São apresentadas as espécies de Hypericaceae registradas para a Reserva Ducke, Estado do Amazonas, incluindo chave de identificação, descrições, ilustrações, comentários sobre distribuição geográfica e hábitats. A família está representada na área por cinco espécies do gênero Vismia: Vismia cauliflora, V. cayennensis, V. guianensis, V. japurensis e V. sandwithii.
Growing knowledge: an overview of Seed Plant diversity in Brazil
Zappi,Daniela C.; Filardi,Fabiana L. Ranzato; Leitman,Paula; Souza,Vinícius C.; Walter,Bruno M.T.; Pirani,José R.; Morim,Marli P.; Queiroz,Luciano P.Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in rela...
An interactive key (Lucid) for the identifying of the genera of seed plants fro...
Bittrich,Volker; Souza,Clara Sampaio D.; Coelho,Rubens L.G.; Martins,Milena V.; Hopkins,Michael J.G.; Amaral,Maria C.E.The identification of Amazonian plants is still difficult for many reasons, one being the lack of collections over large areas of the region. As a consequence of the poor knowledge on the Amazonian flora, many taxonomic publications (revisions and floristic treatments) become out of date within a few years. In this context, the on-line publication of taxonomic treatises has been suggested, since it allows const...
Antiproliferative activity, isolation and identification of active compound fro...
Rodrigues,Rodney Alexandre Ferreira; Carvalho,João Ernesto de; Sousa,Ilza Maria de Oliveira; Antônio,Marcia Aparecida; Pizão,Paulo EduardoGaylussacia brasiliensis (Spreng.) Meissn., Ericaceae, is used in folk medicine for treatment of several inflammatory processes and as healing agent. The scope of this work was to evaluate the in vitro antiproliferative activity of crude dichloromethane extract (CHD) and to identify the compound(s) responsible for this activity. CHD was evaluated and showed a concentration dependent inhibition on all cells line...
Avaliação de métodos de preservação de amostras de plantas de savanas neotropic...
Feres,Fabíola; Souza,Anete P. de; Amaral,Maria do Carmo E. do; Bittrich,VolkerForam comparadas metodologias para preservação de amostras de folhas de plantas de savanas neotropicais, visando a posterior obtenção de DNA de alta qualidade para estudos moleculares. Foram também testadas diferentes metodologias para extração de DNA das amostras investigadas. A qualidade do DNA extraído foi avaliada através de dois métodos: por digestão, utilizando-se três enzimas de restrição e através da am...
The chemistry of flower rewards -- Oncidium (Orchidaceae)
Reis,Mariza G.; Faria,Aparecida D. de; Bittrich,Volker; Amaral,Maria do Carmo E.; Marsaioli,Anita J.Most of the flower-pollinator interactions are based on rewards as pollen and nectar. Our group however, has been focusing on the chemical composition of unusual rewards like floral resins and floral oils. We are now reporting the chemistry of the floraloils of Oncidium pubes which are composed of diacylglycerols and triacylglycerols possessing one or two acetyl residues and one long chain fatty acid. The subst...