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| Moço,Maria Cecília de Chiara; Pinheiro,Maria Célia Bezerra. |
| The pollination ecology of Swartzia apetala Raddi var. apetala was studied in the restinga of Maricá, State of Rio de Janeiro, Brazil. S. apetala var. apetala is a shrub with asynchronic annual blooming, between the months of November and April (hot-rainy season). Each plant can exhibit more than one blooming episode in this period. Their flowers are hermaphrodites, apetalous, heterantherous, odoriferous, and the pollen represents the only reward offered to visitors. It is pollinized by species of Centris and Xylocopa, solitary and polyletic bees, which collect the pollen by means of vibratory movements. Other bees such as Apis mellifera, Pseudaugochloropsis graminea and Trigona spinipes are only pollen-thieves. In this variety of Swartzia vibrating is an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leguminosae; Papilionoideae; Swartzia; Buzz-pollination; Pollen-flower. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400006 |
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| Fernandes,Andreia V.; Ramos,Márcio V.; Gonçalves,José Francisco C.; Maranhão,Paulo A. C.; Chevreuil,Larissa R.; Souza,Luiz Augusto G.. |
| Seeds from fifty native Amazonian Fabaceae species (representing subfamilies Caesalpinioideae, Mimosoideae and Faboideae) were screened for the presence of new lectins. Their crude protein extracts were assayed for hemagglutinating activity (HA). The protein fractions of Anadenanthera peregrina, Dimorphandra caudata, Ormosia lignivalvis and Swartzia laevicarpa exhibited HA, and this activity was inhibited by galactose or lactose but not by glucose or mannose. The crude extract of S. laevicarpa exhibited HA activity only after ion exchange chromatography, and its lectin was further purified by affinity chromatography on immobilized lactose. Despite the large number of lectins that have been reported in leguminous plants, this is the first description of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evolutionary relationships; Plant lectins; Protein-carbohydrate interactions; Swartzia; Tropical Fabaceae. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000300008 |
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