Discoveries
Plant Biology
Plant Biology
To match human population growth, world agricultural production must double over the next quarter century. At Salk, we study plants so that humans will have the food, clothing, energy, and medicines they need now and in the future.

Plant Biology

PNAS
04/2025

Peptide imitation is the sincerest form of plant flattery

Industrial farming practices often deplete the soil of important nutrients and minerals, leaving farmers to rely on artificial fertilizers to support plant growth. In fact, fertilizer use has more than quadrupled since the 1960s, but this comes with serious consequences. Fertilizer production consumes massive amounts of energy, and its use pollutes the water, air, and land.

Assistant Professor Lena Mueller, graduate student Sagar Bashyal, and colleagues are proposing a new solution to help kick this unsustainable fertilizer habit. In their new study, the researchers identified a key molecule produced by plant roots, a small peptide called CLE16, that encourages plants and beneficial soil fungi to interact with each other. They say boosting this symbiotic relationship, in which the fungi provide mineral nutrients to the plants through CLE16 supplementation, could be a more natural and sustainable way to encourage crop growth without the use of harmful artificial fertilizers.

Read News Release
Nature
05/2025

Cannabis pangenome reveals potential for medicinal and industrial use

Cannabis has been a globally important crop for millennia. While best known today as marijuana for its psychoactive cannabinoid THC (tetrahydrocannabinol), cannabis has historically been a cornerstone of human civilization, providing seed oil, textiles, and food for more than 10,000 years. Today, cannabis remains an understudied and underutilized resource, but United States legislation passed in 2014 and 2018 has re-energized cannabis crop development for medicinal, grain, and fiber applications.

Research Professor Todd Michael and postdoctoral researchers Ryan Lynch and Lillian Padgitt-Cobb, alongside Salk colleagues and collaborators from Oregon CBD, Oregon State University, and the HudsonAlpha Institute of Biotechnology, have created the most comprehensive, high-quality, and detailed genetic atlas of cannabis to date. The team analyzed 193 different cannabis genomes (entire sets of genetic information), revealing an unprecedented diversity, complexity, and untapped opportunity within this foundational agricultural species. Their findings set the stage for transformative advances in cannabis-based agriculture, medicine, and industry.

Read News Release

Sign up for our monthly newsletter.

Latest discoveries, events & more.