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| Albuquerque,Maria Rose Jane R.; Costa,Sonia Maria O.; Bandeira,Paulo N.; Santiago,Gilvandete Maria P.; Andrade-Neto,Manoel; Silveira,Edilberto R.; Pessoa,Otilia D.L.. |
| The chemical composition of the essential oils from aerial parts of Pectis apodocephala and Pectis oligocephala were analyzed by GC-MS. The essential oils of these species were predominantly constituted by monoterpenes. Geranial (42.9-44.5%), neral (32.2-34.2%) and alpha-pinene (10.7-11.4%) were the main constituents in the oil of P. apodocephala, while p-cymene (50.3-70.9%) and thymol (24.4-44.7%), were the prevalent compounds in the oil of P. oligocephala. The essential oils were tested against the root knot nematode Meloidogyne incognita and Aedes aegypti larvae survival. The results obtained show that both essential oils exhibited significant activity and could be considered as potent natural namaticidal and larvicidal agents. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pectis apodocephala; Pectis oligocephala; Essential oil; Nematicidal activity; Larvicidal activity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000200003 |
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| OLIVEIRA,DENILSON F.; SANTOS JÚNIOR,HELVÉCIO M. DOS; NUNES,ALEXANDRO S.; CAMPOS,VICENTE P.; PINHO,RENATA S.C. DE; GAJO,GIOVANNA C.. |
| To contribute to the development of products to controlMeloidogyne exigua, the bacteria Bacillus cereus and B. subtilis were cultivated in liquid medium to produce metabolites active against this plant-parasitic nematode. Fractionation of the crude dichloromethane extracts obtained from the cultures afforded uracil, 9H-purine and dihydrouracil. All compounds were active against M. exigua, the latter being the most efficient. This substance presented a LC50 of 204 µg/mL against the nematode, while a LC50 of 260 µg/mL was observed for the commercial nematicide carbofuran. A search for protein-ligand complexes in which the ligands were structurally similar to dihydrouracil resulted in the selection of phosphoribosyltransferases, the sequences of which were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 9H-purine; Dihydrouracil; Molecular modelling; Nematicidal activity; Root-knot nematode; Uracil. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200525 |
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