Professor Hafizah Y. Chenia’s research group in the Discipline of Microbiology at Stellenbosch University investigates innovative anti-virulence strategies aimed at mitigating microbial pathogenicity by targeting bacterial communication and community behaviour rather than bacterial survival alone. The laboratory focuses on disrupting biofilm formation and quorum sensing, two central mechanisms that enable pathogens to establish resilient microbial communities, persist in clinical and environmental niches, and exhibit heightened tolerance to antimicrobial treatment. By studying human clinical isolates alongside aquaculture pathogens, marine bioindicator strains, and environmentally derived bacteria, the group seeks to understand how microbial social interactions drive virulence and disease progression.

A defining feature of the research programme is the exploration of marine host-associated bacteria (seaweeds and sponges), bacterial endophytes isolated from medicinal plants, and coral-associated microbial communities as reservoirs of novel bioactive compounds capable of inhibiting virulence pathways. Investigations into coral probiotics aim to identify beneficial microorganisms that can modulate microbial community balance and suppress pathogenic activity, while complementary studies examine quorum sensing inhibitors and biofilm-disrupting metabolites derived from marine and terrestrial microbial symbionts. These approaches extend into emerging translational applications, including anti-cancer bacteriotherapy, where bacterial systems and their metabolites are evaluated for selective therapeutic potential. Together, these research directions integrate microbial ecology, natural product discovery, and biotechnology to develop next-generation interventions against antimicrobial-resistant pathogens and complex diseases

In parallel, the laboratory investigates the biological synthesis of nanoparticles using bacteria and plant-associated microorganisms as environmentally sustainable production platforms. These biogenic nanoparticles are evaluated for their antimicrobial, anti-biofilm, and anti-virulence properties, with applications in antibacterial therapy and the prevention of biofouling in medical, aquaculture, and marine systems. Another area of interest is bacterial antimicrobial resistance (AMR) and the mechanisms underlying its emergence, persistence, and dissemination, the group places particular focus on mobile genetic elements that mediate the horizontal transfer of resistance determinants across clinical, environmental, aquaculture, and marine microbial communities. By interrogating bacterial resistomes, plasmids, integrons, transposons, and other mobile resistance platforms, the research programme seeks to elucidate how microbial interactions, ecological connectivity, and anthropogenic selective pressures drive the evolution and global spread of drug-resistant pathogens.

Through the active supervision and mentorship of Honours, Master’s, and PhD students, the group integrates fundamental microbiological research with translational innovation, contributing to capacity development in advanced life sciences research. This work aligns strongly with the United Nations Sustainable Development Goals, particularly SDG 3 (Good Health and Well-being) through efforts to address antimicrobial resistance as a major global health threat, combat antimicrobial resistance and develop alternative therapeutics; SDG 4 (Quality Education) through postgraduate training and research-led learning; SDG 9 (Industry, Innovation and Infrastructure) via biotechnology-driven drug discovery and nanoparticle development; SDG 12 (Responsible Consumption and Production) through environmentally sustainable biological synthesis approaches; and SDG 14 (Life Below Water) by advancing marine microbiology, coral probiotic research, and strategies addressing biofouling and aquatic health. Collectively, the research group advances sustainable, resistance-aware therapeutic strategies grounded in microbial interactions, ecological principles, and global health priorities.