"a potent role" is correct and usable in written English.
It means a powerful or influential role. For example, "Nurses play a potent role in delivering top-notch healthcare."
Attitudes, values and behaviors play a potent role as well.
There are none of the dazzling leadership skills that have made him such a potent role model for our own less heroic times ("He always has his finger on our pulse," wrote Frank Worsley, one of his devoted henchmen).
The secularization of Europe, according to some political analysts, is one of the forces pushing it apart from the United States, where religion plays a potent role in politics and society, shaping many Americans' views of the world.
Mr. Stamets's research has led him to believe that mushrooms can play a potent role in decomposing pollutants — filtering contaminants from waterways and restoring microbial diversity to barren soils.
These results suggest a potent role of ASP in protection of brain oxidative injury in CIR animals.
CRF plays a potent role in decreasing food intake in avian species, but the effects of urocortin and urotensin I have not been investigated.
More studies are needed to determine whether the microbiota plays a similarly potent role in human body-weight regulation and obesity.
These experiments indicate that the source of oil plays a more potent role in regulation of leptin mRNA expression relative to dietary energy levels by an insulin-independent mechanism.
The influence of diet, or nutrigenomics, plays a particularly potent role.
An international literature review of nurse-led interventions concluded that general practice nurses have a potentially potent role in chronic disease management, including heart failure.
In particular, recent preliminary studies (10, 11) suggest that depression has a more potent role among patients who are prescribed insulin.
