Copper-resistant Amycolatopsis sp.
The screening and characterization of metal-resistant microorganisms
is important for the development of novel bioremediation
processes. Actinobacteria are Gram-positive, free-living saprophytes
found predominantly in soils (Kavitha and Vijayalakshmi,
2007; Mohan and Vijayakumar 2008), and many of these have
been identified as possible heavy metal bioremediators. Because of
their filamentous nature, actinobacteria are considered as an
intermediate group between bacteria and fungi (Pandey, 2004).
Their metabolic diversity, particular growth characteristics, mycelial
form, and relatively rapid ability to colonize selective substrates,
make them well-suited for use as agents for bioremediation of
inorganic and organic compounds. Amoroso et al. (1998) have also
reported that metal resistance and biosorption ability may be
widespread among actinobacteria growing in contaminated
environments.