Contributions on Lindane Degradation by Microcystis aeruginosa PCC 7806

Cyanobacteria are able to tolerate, and even metabolize, moderate doses of organochlorine pesticides, such as lindane (γ-hexachlorocyclohexane), one the most persistent widely used in recent decades. Previous work showed that Microcystis aeruginosa PCC 7806 degrades that, presence pesticide, microcystin synthesis is enhanced. In this work, using silico approaches, we have identified M. putative homologues lin genes, involved degradation Sphingobium japonicum UT26S. Real-time RT-PCR assays linC gene was induced 7 mg/L lindane. Additionally, prxA, encoding a peroxiredoxin, oxidative stress response, also when present. Taking into account these results, may degrade through metabolic pathway involving 2,5-dichloro-2,5-cyclohexadiene-1,4-diol dehydrogenase encoded by homologue. However, low similarity other potential suggest existence an alternative different heterotrophic microorganisms S. japonicum.