Dr. Fernando Gabriel Martínez is a postdoctoral researcher specializing in microbial biotechnology, nanomaterials, and environmental microbiology. His work focuses on the biotransformation of selenium by lactic acid bacteria and the microbial biosynthesis of metal nanoparticles (AgNPs, ZnNPs) for agricultural and environmental applications. He has also contributed to studies on polymer biodegradation and the valorization of plastic waste using enzymatic and microbial approaches. Dr. Martínez is affiliated with leading research centers such as CERELA and PROIMI-CONICET (Argentina) and collaborates with the Universidad de San Pablo-T (USPT). His research integrates advanced analytical and omics techniques, including proteomics, metabolomics, and microbial community analysis through high-throughput sequencing. He is actively involved in academic teaching, covering topics such as microbiology, botany, and scientific research methodology, and serves as a peer reviewer for international journals. His current projects explore the role of bioengineered nanoparticles in plant stress tolerance and the development of selenium-enriched fermented foods with enhanced nutritional and sensory properties, and the biodegradation and recycling of synthetic polymers such as polyethylene and PET.