CENTRO DE REFERENCIA PARA LACTOBACILOS
Unidad Ejecutora - UE
Cr(VI) and lindane removal by Streptomyces M7 is improved by maize root exudates
BENIMELI, CLAUDIA S.; SIMON SOLA, MARÍA Z.; POLTI, MARTA ALEJANDRA; PÉREZ VISÑUK, DAIANA; ALVAREZ, ANALIA
JOURNAL OF BASIC MICROBIOLOGY
WILEY-V C H VERLAG GMBH
Lugar: Weinheim; Año: 2017 vol. 57 p. 1037 - 1037
Environmental mixed pollution by both organic and inorganic compounds are detected worldwide. Phytoremediation techniques have been proposed as ecofriendly methods for cleaning up polluted sites. Several studies have demonstrated enhanced dissipation of contaminants at the root-soil interface through an increase in microbial activity caused by the release of plant root exudates (REs). The aim of this study was to evaluate the effectiveness for simultaneous Cr(VI) and lindane removal by Streptomyces M7 in presence of maize REs. Our results showed when REs were added to the contaminated minimal medium (MM) as the only carbon source, microbial removal of Cr(VI) and lindane increased significantly with respect to contaminant removal obtained in MM with glucose 1 g L-1. The maximum removal of 91% of lindane and 41% of Cr(VI) were obtained in the co-contaminated system. Moreover, Streptomyces M7 showed plant growth promoting traits which could improve plant performance in contaminated soils. The results presented in this study provide evidence that maize REs markedly influenced the lindane and Cr(VI) removal by Streptomyces M7 making evident the phytoremediation potential of the actinobacteria-plant partnership.