Obtención de aislados bacterianos de la rizósfera de Typha latifolia (Espadaña) crecida en sitios contaminados con Plomo.

• Autores: Alejandro Hernández, Jocabed Rubio, Candy Carranza, Claudia Álvarez Salas, Juan Ramiro Pacheco Aguilar
• Localización: Ciencias Naturales y Exactas Handbook T-II: Congreso Interdisciplinario de Cuerpos Académicos / coord. por Vicente Pérez García, José Luis Mínguela Ramírez, José Luis Rodríguez Muñoz, 2014, ISBN 978-607-8324-18-7, págs. 200-208
• Idioma: español
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• Resumen

  • Typha latifolia is a plant used in phytoremediation due to its ability to remove heavy metals from impacted sites, and accumulating them primarily in the roots. Plant roots are involved in the absorption of water and nutrients, and in the interaction with rhizosphere microorganisms, such as plant growth-promoting rhizobacteria (PGPR). PGPR promotes plant growth in stress conditions caused by heavy metals, drought, salinity and other adverse conditions in the soil. Regarding T. latifolia interactions with rhizosphere microorganisms is still poorly understood. So in this study the bacterial isolation from T. latifolia rhizosphere was conducted. Isolation of bacteria was performed in Luria Bertani media supplemented with 5 ppm of lead (Pb), resuting in 100 isolates; of which 58 correspond to rhizosphere and 42 endophytic isolates. Biochemical characterization shows that some isolates can solubilize phosphates, degrading pectin and growth at 250 ppm of lead.