Volume 19, No. 5, 2022

Burkholderia Cepacia Kj935921 A Biological Alternative To Mitigate The Effect Of Cadmium In Tropical Pasture Soils

Alexander Pérez Cordero , Donicer E Montes-Vergara and Yelitza Aguas Mendoza


Cd concentration was determined in soil and tissues of Bothriochloa pertusa (L), A Camus, endophytes were isolated from different tissues and their Cd tolerance capacity was evaluated in vitro. Cd concentration and presence of endophytic bacteria (CFU/g tissue) were determined for each tissue. The Cd values found correspond to 1.5 ± 3.6 mg/kg. The average ranges per tissue were from 1.05 (inflorescence) to 3.21 mg/kg (root). The highest presence of endophytic bacteria was found in the inflorescence with respect to leaf, stem and root. Burkholderia cepacia KJ935921 (97%) was identified as an endophytic bacterium with the ability to tolerate up to 500 ppm CdCl2 and showed in vitro nitrogen fixation, phosphate solubilisation and siderophore production, becoming a biological resource for the management of heavy metal contamination in the environment.

Pages: 238-252

Keywords: Pasture, endophytes, Cadmium, growth promotion.

Full Text