SAIBU SALAMETU

Microbiology

At the Microbiology department office

Appointment on Visitation important

Topic: Antibiotics Resistance Genes In Bioaerosols

Description: Antibiotics have been vital in treating infectious diseases in humans, animals, and plants, but their efficacy is now uncertain due to increasing resistance. Antimicrobial resistance AMR caused about five million deaths and if unchecked, up to 10 million deaths could occur annually by 2050. AMR is a global issue and a risk to public health and the environment, as the environment plays a significant role in the dissemination and proliferation of AMR. Antibiotic resistance genes ARGs have been found in various environments, and bioaerosols which has been understudied also contribute to the spread of resistant microbes. To this end, air samples will be collected periodically and subjected to high throughput sequencing, microcscopy and physicochemical characterization. This study will allow early detection of epidemic and control of diseases circulating in the air. Predict the pattern of future spread of airborne ARGs on the basis of data generated.

#	Certificate	School	Year
1.	Ph.D (Microbiology Environmental )	University of Lagos	2021

Sediment chemistry and bacterial communities at three sites with contrasting dredging histories in Badagry Lagoon, Nigeria

Lagoons are natural coastal filters and biodiversity hotspots, yet the impacts of human activities on the Badagry Lagoon remain poorly understood. This study evaluated how dredging and pollutant inputs shape sediment bacterial communities by integrating physicochemical measurements with full-length 16S rRNA (PacBio) profiling across three lagoon sites. Composite sediment samples were collected from six random points per site. BL-2 (post-dredging) recorded strongest nutrient enrichment, highest PAH levels (15.6 mg/kg) and greatest bacterial richness and diversity (Chao1 - 2650.52; Shannon - 6.48). BL-3 (no dredging) showed intermediate values (Chao1 - 2220.96; Shannon - 5.97) and was chemically less enriched (9.81 mg/kg). BL-1 with ongoing dredging activity had the lowest bacterial diversity (Chao1 - 1904.52; Shannon - 5.54) and PAH (6.93 mg/kg). Sediment bacterial communities were dominated by Pseudomonadota, Bacillota and Actinomycetota. A notable abundance of Comamonas (9.5%), Clostridium (8.8%) and Gaiella (6%) was observed in BL-1, BL-2 and BL-3 respectively. Nutrient-related variables and PAHs were the primary drivers associated with bacterial community differences. The contrasting diversity patterns reflected dredging intensity and pollution-driven shifts in sediment chemistry. This single-time-point assessment indicates that post-dredging, undisturbed stability and active dredging disturbance may underlie the distinct bacterial community structures and ecosystem dynamics observed in Badagry Lagoon.

SAIBU SALAMETU is a Lecturer I at the Department of Microbiology

SAIBU has a Ph.D in Microbiology Environmental from University of Lagos