Two plants capable of causing nerve damage and paralysis even in very small doses also contain compounds with potentially valuable properties for fighting pain, malaria, cancer, and agricultural pests. Researchers have developed a way to replicate some of these complex chemical processes in the laboratory, which could lead to more sustainable treatments based on natural products.

Research on Poisonous Plants

The study focused on monkshood (wolfsbane) and larkspur. Experts from Michigan State University and the Czech Academy of Sciences participated in the research, with results published in the journal Molecular Plant. For thousands of years, these plants have been used in various medical traditions around the world. They are known to interact with the human body in many ways, and understanding the mechanisms of their synthesis could open new directions for scientific research.

Chemical Potential of Plants

Despite advances in modern science, plants remain unique in their ability to create complex natural chemical compounds. Over millions of years of evolution, they have developed a vast arsenal of molecules for survival. Many of these compounds have found uses in everyday life, including caffeine, capsaicin, menthol, vanillin, as well as a range of medicines derived from or inspired by plants.

Studying Specialized Metabolites

At Michigan State University, researchers study specialized metabolites—natural substances that can have practical applications. In recent years, attention has been given to larkspur, also known as delphinium due to the shape of its flowers. Scientists aimed to uncover how the plant produces diterpenoid alkaloids—a group of highly toxic chemical compounds that may also have medical benefits.

Decoding Biochemical Pathways

Diterpenoid alkaloids combine features of two of the oldest and largest groups of plant compounds. Their structures are so complex that scientists have spent decades trying to understand how they are formed. One of the most well-known compounds in this family, aconitine, was isolated nearly 200 years ago, but has still not been synthesized in the laboratory.

International Collaboration

The progress of this project was made possible through collaboration between laboratories in the USA and the Czech Republic. By joining forces, the international team set out to determine the precise sequence of biochemical steps used by monkshood and larkspur to create diterpenoid alkaloids.

Molecular Analysis and Synthesis

Researchers studied several species of both plants and analyzed thousands of genes to identify those activated in the right tissues at specific times. The biosynthetic pathway can be compared to an assembly line: if one of the sequential steps fails, further synthesis is impossible.

Since plants typically produce specialized metabolites in very small amounts and slowly, identifying the biochemical pathways of their synthesis is crucial for large-scale production and practical use of these compounds. Once the pathway is decoded, scientists can transfer the genetic instructions for creating the compound into a modified organism, such as yeast. This approach allows for the production of larger quantities of the desired substance for further research and development, potentially leading to new medicines based on natural products.

Tobacco Experiment

After identifying a set of genes from monkshood and larkspur, researchers transferred these genetic instructions into tobacco, which served as a living factory to test the feasibility of replicating the plant’s chemical process. Analysis showed that the modified tobacco plants successfully assembled the necessary biochemical pathway. Six different enzymes worked together to synthesize atisinium—a diterpenoid alkaloid—giving the molecule a complex structure and enabling the addition of a nitrogen source.

Prospects for Further Research

Identifying the first biochemical steps in the synthesis of atisinium has become an important starting point for studying the broader family of diterpenoid alkaloids and their potentially useful medical properties. The goal of this work is to create environmentally friendly and sustainable tools that harness the natural potential of these plants.