ABSTRACT We attempted to study the compatibility among plant beneficial bacteria in the culture level by growing them near in the nutrient agar plates. Among all the bacteria tested, Rhizobium was found to inhibit the growth of other bacteria. From the compatible group of PGPR, we have selected one biofe...
Arachis/crecimiento & desarrollo,
Arachis/microbiología,
Azospirillum brasilense/fisiología,
Azotobacter/fisiología,
Bacillus megaterium/fisiología,
Bacillus subtilis/fisiología,
Fertilizantes,
Hojas de la Planta,
Raíces de Plantas/crecimiento & desarrollo,
Raíces de Plantas/microbiología,
Pseudomonas fluorescens/fisiología,
Rhizobium/fisiología,
Plantones/crecimiento & desarrollo,
Plantones/microbiología,
Semillas/crecimiento & desarrollo,
Semillas/microbiología,
Microbiología del Suelo
ABSTRACT The constant use of chemical insecticides for Aedes aegypti control has caused resistance in the mosquito populations. Thus, the objective of this study was to analyze the larvicidal potential of extracts and fractions of plants on A. aegypti larvae. The analysis included sixty one extracts and ...
Aedes,
Bioensayo,
Agentes de Control Biológico,
Brasil,
Etanol/química,
Insecticidas,
Larva,
Extractos Vegetales,
Hojas de la Planta/química,
Valores de Referencia,
Reproducibilidad de los Resultados,
Pruebas de Toxicidad
ABSTRACT The phytochemical study of hexane, chloroform and methanol extracts from leaves of Psychotria viridis resulted in the identification of: the pentacyclic triterpenes, ursolic and oleanolic acid; the steroids, 24-methylene-cycloartanol, stigmasterol and β-sitosterol; the glycosylated steroids...
Línea Celular Tumoral,
Supervivencia Celular/efectos de los fármacos,
Inhibidores de la Colinesterasa,
Colorimetría,
Ensayo de Inmunoadsorción Enzimática,
Espectroscopía de Resonancia Magnética,
N,N-Dimetiltriptamina/química,
Extractos Vegetales/química,
Extractos Vegetales/aislamiento & purificación,
Extractos Vegetales/farmacología,
Hojas de la Planta/química,
Psychotria/química,
Reproducibilidad de los Resultados,
Espectroscopía Infrarroja por Transformada de Fourier
ABSTRACT This study aims to determine the allelopathic potential of Amaranthus retroflexus (Ar) with different climatic zones on seed germination and growth of A. tricolor (At) treated with a gradient N addition. Ar leaf extracts only displayed significantly allelopathic potential on the underground grow...
Alelopatía/fisiología,
Amaranthus/química,
Amaranthus/fisiología,
Análisis de Varianza,
China,
Nitrógeno/química,
Extractos Vegetales/química,
Hojas de la Planta/química,
Semillas/química,
Semillas/fisiología,
Estadísticas no Paramétricas
ABSTRACT Melon is one of the most important vegetable crops in the world. With short cycle in a system of phased planting, phytosanitary control is compromised, and a great volume of agricultural chemicals is used to control vegetable leafminer. Genetic control is an ideal alternative to avoid the damage...
Clorofila/análisis,
Colorimetría/métodos,
Cucumis melo/genética,
Dípteros,
Genes de Plantas,
Variación Genética,
Genotipo,
Larva,
Control Biológico de Vectores/métodos,
Fenotipo,
Enfermedades de las Plantas/prevención & control,
Hojas de la Planta/química,
Hojas de la Planta/genética,
Valores de Referencia,
Estadísticas no Paramétricas
ABSTRACT Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plant...
Clorofila/análisis,
Clorofila/metabolismo,
Aceites Volátiles/metabolismo,
Fotosíntesis/fisiología,
Fotosíntesis/efectos de la radiación,
Piper/crecimiento & desarrollo,
Piper/metabolismo,
Piper/efectos de la radiación,
Hojas de la Planta/crecimiento & desarrollo,
Hojas de la Planta/metabolismo,
Hojas de la Planta/efectos de la radiación,
Reproducibilidad de los Resultados,
Luz Solar,
Factores de Tiempo
ABSTRACT Phoradendron mucronatum and P. microphyllum are plants that found in tropical and subtropical areas, used in traditional medicine and popularly known as mistle-thrush. The aim of this study was to identify the chemical constituents of different leaf extracts from P. mucronatum and P. microphyllu...
Acetatos/química,
Línea Celular Tumoral,
Proliferación Celular/efectos de los fármacos,
Cloroformo/química,
Cromatografía de Gases y Espectrometría de Masas,
Hexanos/química,
Células MCF-7,
Cloruro de Metileno/química,
Phoradendron/química,
Extractos Vegetales/química,
Extractos Vegetales/farmacología,
Hojas de la Planta/química,
Reproducibilidad de los Resultados,
Sales de Tetrazolio,
Tiazoles,
Pruebas de Toxicidad,
Viscaceae/química
Abstract Plants respond to wounding caused by mechanical stress or herbivory by synthesizing defense proteins. There are no studies reporting the action of induced plant proteins against ticks. The aim of this study was to investigate the effect of mechanically wounded Leucaena leucocephala leaves agains...
Watercress (Nasturtium officinale, Cruciferae; W. Aiton) is a vegetable widely consumed in our country, with nutritional and potentially chemopreventive properties. Previous reports from our laboratory demonstrated the protective effect of watercress juice against DNA damage induced by cyclophosphamide i...
ABSTRACT This study investigated the anesthetic potential of the essential oil (EO) of Aloysia polystachya in juveniles of dusky grouper (Epinephelus marginatus). Fish were exposed to different concentrations of EO of A. polystachya to evaluate time of induction and recovery from anesthesia. In the secon...
Anestésicos/farmacología,
Bicarbonatos/sangre,
Biomarcadores/sangre,
Bagres/sangre,
Gases/sangre,
Glucosa/análisis,
Hematócrito,
Hemoglobinas/análisis,
Concentración de Iones de Hidrógeno,
Metales Alcalinos/sangre,
Aceites Volátiles/farmacología,
Hojas de la Planta/química,
Aceites de Plantas/farmacología,
Verbenaceae/química
