Hidden Chemistry of the Desert: Exploring Biosynthetic Gene Clusters in Desert-Associated Bacteria
Data Science and Math- Grade:
- 10
- Teacher:
- Jeanne Wages
Desert environments are extremely harsh, with high heat, strong UV radiation, and very little water. We asked whether these stressful conditions might drive bacteria to develop unique chemical abilities. Many important compounds, including antibiotics, are produced by groups of genes called biosynthetic gene clusters (BGCs). Using the bioinformatics tool antiSMASH, we analyzed desert-associated bacterial genomes to identify and compare their BGCs. We found large differences in the number, type, and novelty of BGCs across genomes. NRPS and PKS pathways, which are linked to many antibiotics, were common. Principal component analysis (PCA) showed that biosynthetic potential is structured rather than random, meaning desert bacteria follow distinct chemical strategies. By combining abundance, diversity, and novelty into a composite score, we identified a small group of high-priority genomes for future study. Our results suggest that desert bacteria may be promising sources of new bioactive compounds, although experimental testing is needed to confirm these predictions.