One remarkable example takes place beneath our feet. Certain plants form partnerships with bacteria that live inside their roots. In this biological exchange, the bacteria convert nitrogen into a form the plant can use to grow. In return, the plant supplies the bacteria with nutrients and a protected place to live. Both organisms benefit and grow stronger.

The Sankari Lab at the Stowers Institute focuses on tiny signaling molecules called host peptides, which plants produce to influence how symbiotic bacteria grow, behave, and survive within their roots. By decoding these molecular messages, researchers are uncovering how plants maintain healthy, cooperative relationships with beneficial microbes while preventing those partnerships from becoming harmful.

Ritvee Talele, a Stowers Graduate School student in the Sankari Lab, studies these plant-microbe relationships to understand how different species communicate and cooperate at the molecular level.

"By studying symbiosis in plants and bacteria, we can gain insights into how beneficial microbes function more broadly in nature. Those discoveries could help improve agriculture, biotechnology, and even human health,” said Talele.

Although this research begins with plants and bacteria, its impact reaches much further. Understanding how beneficial microbes interact with their hosts could lead to new advances in agriculture, environmental sustainability, and our broader understanding of how living organisms work together to build healthy ecosystems.

Investigator Siva Sankari, Ph.D., said, “Plants come up with innovative solutions for complex problems.”

Watch the BioBasics video above to discover how scientists are uncovering the molecular secrets behind one of nature's most important partnerships.