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celulaEl investigador de la Universidad Tecnológica del Chocó, adscrito al programa de Biología: el doctor MANUEL HAMINTON SALAS MORENO, junto con investigadores de la Universidad de Córdoba, Universidad de Cartagena y Grupo de Investigación en Agroforestería y Bioquímica Vegetal, Proteómica y Biología de Sistemas, Departamento de Bioquímica y Biología Molecular-ETSIAM, Universidad de Córdoba (España); publicaron una investigación en la Revista Internacional Biologia Plantarum.

En este estudio se determinaron los mecanismos bioquímicos de tolerancia a metales pesados, específicamente de plomo, de una especie de pasto (Paspalum fasciculatum), la cual tiene capacidad de fitorremediar metales pesados como el Cd, Pb y Hg en suelos degradados por la minería de oro. Para dilucidar los mecanismos bioquímicos de tolerancia al estrés por Pb en estas plantas, se utilizó técnicas PROTEÓMICAS (Shotgun Proteomics), basada en cromatografía liquida con espectrometría de masas en tándem (LC-MS/MS). De esta forma se identificaron 323 proteínas involucradas en la fotosíntesis y metabolismo de sacáridos y energía, proteínas de defensa antioxidante, mejorando la protección y reparación de otras proteínas y proteínas de señales de transducción para coordinar la respuesta fisiológica al estrés por Pb. Nuestros resultados a nivel mundial proporcionan información importante para comprender los mecanismos de tolerancia en P. fasciculatum y podría ser importante en futuros estudios moleculares sobre la resistencia y acumulación de Pb en otras plantas. Pero sin duda para Colombia y específicamente el Chocó es una investigación muy importante, debido a la aplicabilidad de esta planta para fitorremediar grandes extensiones de suelo degradados y contaminados con metales pesados producto de la minería de oro.



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