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| Oliveira,Dênis Coelho de; Christiano,Jaciara de Cássia Souza; Soares,Geraldo Luiz Gonçalves; Isaias,Rosy Mary dos Santos. |
| Galhas são estruturas vegetais induzidas em resposta ao ataque de organismos indutores. Euphalerus ostreoides (Psyllidae) induz galhas sobre a face adaxial de folíolos nas nervuras de segunda ordem de Lonchocarpus muehlbergianus (Fabaceae). Seções anatômicas foram realizadas e comparados os tecidos de folíolos sadios com os de galhas imaturas e maduras. Testes histoquímicos para detecção de derivados fenólicos, flavonóides, ligninas, lipídios e amido foram realizados para avaliar o impacto químico causado pelo galhador. Em termos estruturais, a perda de sinuosidade das células epidérmicas, a neoformação de tricomas, de células condutoras e de fibras foram os caracteres mais conspícuos observados em decorrência da indução das galhas. Destaca-se a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomia; Euphalerus; Galha; Histoquímica; Lonchocarpus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000400015 |
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| Detoni,Michelle de Lima; Vasconcelos,Eveline Gomes; Rust,Naiara Miranda; Isaias,Rosy Mary dos Santos; Soares,Geraldo Luiz Gonçalves. |
| Two species, Tanaostigmodes ringueleti and T. mecanga, induce distinct galls on Calliandra brevipes Benth (Fabaceae: Mimosoidae), a globose and a fusiform gall morphotype. Seasonal changes of phenolic content in the tissues of the two distinct galls were compared to those of non-galled leaves and stems of the host plants over one year. The variation in the phenolic content profiles was similar in both non-galled and galled tissues, and was primarily associated with changes in the levels of rainfall, indicating a direct response to hydric stress. In periods of drastic changes in water precipitation, the alterations were significantly higher in non-galled than in galled tissues suggesting that the gall inducers might limit the variation in the phenolic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tanaostigmodes ringueleti; Tanaostigmodes mecanga; Gall; Insect-plant interaction; Phenol. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300013 |
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| Ferreira,Paula; Soares,Geraldo Luiz Gonçalves; D'ávila,Sthefane; Bessa,Elisabeth Cristina de Almeida. |
| Subulina octona is a terrestrial snail which serves as an intermediate host for the parasites. It is also an agricultural pest. The aim of this work was to assess, during 120 days, the effects of caffeine and thymol at 2.5 g/L and 5 g/L on the hatchability, survival after hatching, growth and reproduction of S. octona under the laboratory conditions. A total of 240 eggs, 240 juveniles aged 10-day-old, and 240 aged 30-day-old were tested. The results showed that thymol (at 2.5 g/L and 5 g/L) and caffeine (at 5 g/L) acted as ovicides. In the 10-day-old juveniles, caffeine at 5 g/L caused 25% mortality and at 2.5 g/L it caused 30% mortality. Thymol at 2.5 and 5 g/L caused 20 and 22.5% mortality, respectively. In the 30-day-old juveniles, caffeine at 5 g/L... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caffeine; Thymol; Molluscicide; Subulina octona; Snail-terrestrial. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400018 |
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