Аннотация:This thesis investigates the chemical ecology aspects of the Phloeidae stink bugs and the characterization of the Bacillus safensis's oxidoreductases in two separate chapters:Chapter I.This study revealed novel aspects of the chemical ecology of Phloeophana longirostris and Phloea subquadrata from Phloeidae family.This family, has only three genders and four species with characteristic maternal care of eggs and nymphs and camouflage on the trunk of the host tree.The aim of this study was to the identification of major volatile compounds produced by the stink bugs and their relationship with the host trees.The results revealed that after physical stimulation, the insects release aldehydes and unsaturated hydrocarbons, esters and oxoaldehyde as major compounds.These volatile compounds were important in the discrimination of male, female and nymphs of each species.Chapter II.In the second part of this research, we investigated the enzymatic activity of the micro-organism Bacillus safensis isolated from Brazilian oil.This micro-organism has an enzymatic arsenal capable of degrading aromatic organic compounds.The aim of this study was to purify, isolate and identify oxidoreductases present in strain (CFA06) Bacillus safensis.Through this Grampositive bacterium, highly resistant to ultraviolet radiation, it was possible to identify two oxidoreductases.The novel oxidoreductase, here named BsP315 has 21 kDa and iron and molybdenum bound to its catalytic site, additionally we have isolated a catalase here named BsCat.
