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| Rabelo,Guilherme Rodrigues; Marques,Jonas de Brito Campolina; Zottich,Umberto; Dias,Germana Bueno; Miguel,Emílio Castro; Gomes,Valdirene Moreira; Da Cunha,Maura. |
| Pachystroma longifolium is an evergreen species of Euphorbiaceae that occurs in tabuleiro forest, a type of lowland Atlantic Forest. The site chosen for this study was a fragment of tabuleiro forest that has a history of being selectively logged for timber. P. longifolium is very successful at colonizing disturbed areas in this forest fragment in comparison with preserved fragments. In the present work, which was based on using different microscopy (electron and light microscopy, X-ray analysis) and biochemistry techniques, we describe the leaf and latex traits of P. longifolium and their role as defense mechanisms against desiccation and herbivory. Our results suggest the richness of P. longifolium populations, in the disturbed forest area studied, is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomical strategies; Crystals; Cuticles; Laticifers; Leaf anatomy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000100018 |
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| Ramos,Márcio V.; Araújo,Eliane S.; Oliveira,Raquel S. B.; Teixeira,Fabiano M.; Pereira,Danielle A.; Cavalheiro,Mariana G.; Souza,Diego P.; Oliveira,Jefferson S.; Freitas,Cleverson D. T. de. |
| Latex is an endogenous milky fluid synthesized and accumulated under pressure in a network of laticifer cells. In this study, latices from five plant species were examined for deterrent effect on oviposition of two Coleoptera (Bruchidae) pests. The latex from Euphorbia tirucalli, Calotropis procera and Plumeria rubrae exhibited deterrent activity on oviposition of both Callosobruchus maculatusand Zabrotis subfasciatus beetles. The latex from Cryptostegia grandiflora and Himathantus drasticus were less effective to C. maculatus and Z. subfasciatus oviposition, respectively. Eggs laid on latex-treated seeds were not affected.The emergence and the mean time of development and weight of larvae grown in treated seeds were similar to the controls. The deterrent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calotropis procera; Deterrent activity; Insect; Laticifers; Proteins; Plumeria rubra. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000100008 |
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