Biodegradation of [D-Leu(1)] microcystin-LR by a bacterium isolated from sediment of Patos Lagoon estuary, Brazil.

ABSTRACT:

Background

Toxic cyanobacterial blooms are recurrent in Patos Lagoon, in southern Brazil. Among cyanotoxins, [D-Leu(1)] microcystin-LR is the predominant variant whose natural cycle involves water and sediment compartments. This study aimed to identify and isolate from sediment a bacterial strain capable of growing on [D-Leu(1)] microcystin-LR. Sediment and water samples were collected at two distinct aquatic spots: close to the Oceanographic Museum (P1), in Rio Grande City, and on São Lourenço Beach (P2), in São Lourenço do Sul City, southern Brazil.

Methods

[D-Leu(1)] microcystin-LR was isolated and purified from batch cultures of Microcystis aeruginosa strain RST9501. Samples of water and sediment from Rio Grande and São Lourenço do Sul were collected. Bacteria from the s

SUBMITTER: Lemes GA 

PROVIDER: S-EPMC4355378 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature