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| Souza,Antonia Queiroz Lima de; Souza,Afonso Duarte Leão de; Astolfi Filho,Spartaco; Pinheiro,Maria Lúcia Belém; Sarquis,Maria Inez de Moura; Pereira,José Odair. |
| Das plantas tóxicas da Amazônia Palicourea longiflora e Strychnos cogens foram isolados 571 fungos endofíticos e 74 bactérias endofíticas. Palicourea longiflora (Rubiaceae) e outras espécies desse gênero estão relacionadas a 90% das mortes de gado na região Amazônica. Strychnos cogens (Loganiaceae) e outras espécies de Strychnos são utilizadas pelos indígenas na confecção de "curares". Entre os endófitos isolados de P. longiflora foram identificados os fungos: Colletotrichum sp. e seu telemorfo Glomerella sp., Guignardia sp., Aspergillus niger, Phomopsis sp. e Xylaria sp., além da bactéria Burkholderia gladioli, pertencente a um grupo de fixadoras de nitrogênio. Dos isolados de S. cogens foram identificados os fungos: Colletotrichum sp., Guignardia sp.,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palicourea longiflora; Strychnos cogens; Fungos endofíticos; Bactérias endofíticas; Bioensaios. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000200006 |
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| Almeida,Fabiana Greyce Oliveira; Aquino,Priscila Ferreira de; Souza,Afonso Duarte Leäo de; Souza,Antonia Queiroz Lima de; Vinhote,Sonia do Carmo; Mac-Cormick,Thais Messias; Silva,Marcelo Soares da Mota; Chalub,Sidney Raimundo Silva; Fischer,Juliana de Saldanha da Gama; Carvalho,Paulo Costa; Carvalho,Maria da Gloria da Costa. |
| BACKGROUND: DNA methylation is commonly linked with the silencing of the gene expression for many tumor suppressor genes. As such, determining DNA methylation patterns should aid, in times to come, in the diagnosis and personal treatment for various types of cancers. Here, we analyzed the methylation pattern from five colorectal cancer patients from the Amazon state in Brazil for four tumor suppressor genes, viz.: DAPK, CDH1, CDKN2A, and TIMP2 by employing a polymerase chain reaction (PCR) specific to methylation. Efforts in the study of colorectal cancer are fundamental as it is the third most of highest incidence in the world. RESULTS: Tumor biopsies were methylated in 1/5 (20 %), 2/5 (40 %), 4/5 (80 %), and 4/5 (80 %) for CDH1, CDKN2A, DAPK, and TIMP2... |
| Tipo: Journal article |
Palavras-chave: Methylation; Colorectal cancer; Amazon; Epigenetic. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100050 |
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| Banhos,Elissandro Fonseca dos; Souza,Antonia Queiroz Lima de; Andrade,Juliano Camurça de; Souza,Afonso Duarte Leão de; Koolen,Hector Henrique Ferreira; Albuquerque,Patrícia Melchionna. |
| Beneficial interactions between plants and microorganisms have been investigated under different ecological, physiological, biochemical, and genetic aspects. However, the systematic exploration of biomolecules with potential for biotechnological products from this interaction still is relatively scarce. Therefore, this study aimed the evaluation of the diversity and antimicrobial activity of the endophytic fungi obtained from roots, stems and leafs of Myrcia guianensis (Myrtaceae) from the Brazilian Amazon. 156 endophytic fungi were isolated and above 80% were identified by morphological examination as belonging to the genera Pestalotiopsis, Phomopsis, Aspergillus, Xylaria, Nectria, Penicillium and Fusarium. Fermented broth of those fungi were assayed for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary metabolites; Fungus/plant interaction; Antibiosis; Amazonian endophytic fungi. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100021 |
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