麻疯树提取物对番茄病原菌的体外抗菌活性

J. Pérez-Pérez, Diana Guerra-Ramírez, Benito Reyes-Trejo, J. Cuevas-Sánchez, P. Guerra-Ramírez
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EnglishAbstract: The microplate microdilution method was used to evaluate the inhibition of in vitro growth of Clavibacter michiganensis subsp michiganensis (Cmm), Pseudomonas syringe pv. tomato (Pst) and Xanthomonas campestris pv. vesicatory (Xcv) phytopathogenic bacteria, with extracts of different polarity obtained from roots of Jatropha dioica Sesee (Blood grade), endemic plant species of Mexico valued in traditional medicine for its pharmacological and healing properties. As an indicator of cellular respiration in bacterial cultures exposed to extracts, 2,3,5-triphenyltetrazolium chloride was used. The methanolic, hexane and ethyl acetate extracts showed antimicrobial activity against the phytopathogens Cmm, Pst and Xcv. According to the results, the hexane extract showed the lowest Maximum Average Inhibitory concentration (IC50) against Pst and Xcv (0.5 ± 0.01 and 1.7 ± 0.36 mg mL-1, respectively), so it was separated by column chromatography. 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引用次数: 2

摘要

中文摘要:用微板微量稀释法评价了植物病原菌分枝杆菌亚种Clavibacter michiganensis的体外生长抑制作用。Michiganensis(CMM),丁香假单胞菌PV。番茄(PST)和野油菜黄单胞菌PV。从墨西哥特有的植物麻疯树(血液级)的根中提取不同极性的提取物,因其药理和治疗特性而在传统医学中被重视。2,3,5-三苯基四唑氯化物被用作暴露于提取物的细菌培养物中的细胞呼吸指标。甲醇、己烷和乙酸乙酯提取物对植物病原体CMM、PST和XCV具有抗菌活性。根据结果,己烷提取物对PST和XCV的最大平均抑制浓度(IC50)最低(分别为0.5±0.01和1.7±0.36mg ml-1),因此采用柱层析分离。结果,分离并纯化了一种光谱鉴定为胞嘧啶的白色结晶固体,该化合物还具有抗CMM、PST和XCV细菌的活性,其IC50分别为1.0±0.13、1.0±0.11和1.1±0.19 mg ml-1。这些体外结果为使用雌雄异株植物提取物控制番茄培养中研究的细菌引起的疾病开辟了可能性,为抗生素或铜化合物的使用提供了替代方案。中文摘要:微板微稀释法用于评价分枝杆菌亚种(CMM)、丁香假单胞菌PV体外生长的抑制作用。番茄(PST)和野油菜黄单胞菌PV。囊性(XCV)植物病原细菌,具有从墨西哥特有植物麻疯树(血液级)根中获得的不同极性提取物,因其药理和治疗特性而在传统医学中具有价值。作为暴露于提取物的细菌培养中细胞呼吸的指标,使用了2,3,5-三苯基四氮唑氯化物。甲醇、己烷和乙酸乙酯提取物对植物病原体CMM、PST和XCV具有抗菌活性。根据结果,己烷提取物对PST和XCV的平均最大抑制浓度(IC50)最低(分别为0.5±0.01和1.7±0.36mg ml-1),因此采用柱层析分离。因此,分离和纯化了光谱鉴定为胞嘧啶的白色结晶固体,该化合物还对CMM、PST和XCV细菌具有活性,IC50分别为1.0±0.13、1.0±0.11和1.1±0.19 mg ml-1。这些体外结果为使用薯蓣属植物提取物控制番茄培养中研究的细菌引起的疾病开辟了可能性,为使用抗生素或铜化合物提供了替代方案。
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Actividad antimicrobiana in vitro de extractos de Jatropha dioica seseé contra bacterias fitopatógenas de tomate
espanolResumen: Se utilizo el metodo de microdiluciones en microplaca para evaluar la inhibicion del crecimiento in vitro de las bacterias fitopatogenas Clavibacter michiganensis subsp. michiganensis (Cmm), Pseudomonas syringe pv. tomato (Pst) y Xanthomonas campestris pv. vesicatoria (Xcv) con extractos de diferente polaridad obtenidos a partir de raices de Jatropha dioica Sesee (Sangre grado), especie vegetal endemica de Mexico valorada en la medicina tradicional por sus propiedades farmacologicas y curativas. Como indicador de respiracion celular en cultivos bacterianos expuestos a extractos, se utilizo cloruro de 2,3,5-trifeniltetrazolio. Los extractos metanolico, hexanico y de acetato de etilo, presentaron actividad antimicrobiana contra los fitopatogenos Cmm, Pst y Xcv. De acuerdo con los resultados, el extracto hexanico mostro la menor concentracion Inhibitoria Media Maxima (IC50) contra Pst y Xcv (0.5 ± 0.01 y 1.7 ± 0.36 mg mL-1, respectivamente) por lo que se separo por cromatografia en columna. Como resultado, se aislo y purifico un solido cristalino blanco identificado espectroscopicamente como citlalitriona, dicho compuesto tambien presento actividad contra las bacterias Cmm, Pst y Xcv con una CI50 de 1.0 ± 0.13, 1.0 ± 0.11 y 1.1 ± 0.19 mg mL-1, respectivamente. Estos resultados in vitro abren la posibilidad de utilizar extractos vegetales de J. dioica para el control de las enfermedades causadas por las bacterias estudiadas en el cultivo de tomate, ofreciendo una alternativa al uso de antibioticos o compuestos de cobre. EnglishAbstract: The microplate microdilution method was used to evaluate the inhibition of in vitro growth of Clavibacter michiganensis subsp michiganensis (Cmm), Pseudomonas syringe pv. tomato (Pst) and Xanthomonas campestris pv. vesicatory (Xcv) phytopathogenic bacteria, with extracts of different polarity obtained from roots of Jatropha dioica Sesee (Blood grade), endemic plant species of Mexico valued in traditional medicine for its pharmacological and healing properties. As an indicator of cellular respiration in bacterial cultures exposed to extracts, 2,3,5-triphenyltetrazolium chloride was used. The methanolic, hexane and ethyl acetate extracts showed antimicrobial activity against the phytopathogens Cmm, Pst and Xcv. According to the results, the hexane extract showed the lowest Maximum Average Inhibitory concentration (IC50) against Pst and Xcv (0.5 ± 0.01 and 1.7 ± 0.36 mg mL-1, respectively), so it was separated by column chromatography. As a result, a white crystalline solid identified spectroscopically as citlalitrione was isolated and purified, said compound also exhibited activity against the Cmm, Pst and Xcv bacteria with an IC50 of 1.0 ± 0.13, 1.0 ± 0.11 and 1.1 ± 0.19 mg mL-1, respectively. These in vitro results open the possibility of using plant extracts of J. dioica for the control of diseases caused by the bacteria studied in tomato cultivation, offering an alternative to the use of antibiotics or copper compounds.
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