Degradation of [Dha(7)]MC-LR by a Microcystin Degrading Bacterium Isolated from Lake Rotoiti, New Zealand.

ABSTRACT: For the first time a microcystin-degrading bacterium (NV-3 isolate) has been isolated and characterized from a NZ lake. Cyanobacterial blooms in New Zealand (NZ) waters contain microcystin (MC) hepatotoxins at concentrations which are a risk to animal and human health. Degradation of MCs by naturally occurring bacteria is an attractive bioremediation option for removing MCs from drinking and recreational water sources. The NV-3 isolate was identified by 16S rRNA sequence analysis and found to have 100% nucleotide sequence homology with the Sphingomonas MC-degrading bacterial strain MD-1 from Japan. The NV-3 isolate (concentration of 1.0 × 10(8) CFU/mL) at 30°C degraded a mixture of [Dha(7)]MC-LR and MC-LR (concentration 25  μ g/mL) at a maximum rate of 8.33  μ g/mL/day. The intermediate by

SUBMITTER: Somdee T 

PROVIDER: S-EPMC3712209 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature