Researchers Sequenced Ayahuasca Plant Genomes
The genomic mapping of these two species clarifies the metabolic pathways behind their specific alkaloid production.
Updated on Oct. 11, 2026 in Botany
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Researchers have sequenced the genomes of Psychotria viridis and Banisteriopsis caapi to determine the biological basis for their chemical properties. This research-stage study identifies the enzymes and genomic structures driving alkaloid biosynthesis in these plants.
Why it matters
Understanding the biosynthetic pathways of these plants provides a biochemical map of how these specific alkaloids are produced. This foundational genetic data offers a new look at the metabolic processes that have historically been utilized in the Amazon region.
Psychotria viridis is a hexaploid with 66 chromosomes, while Banisteriopsis caapi is a diploid with 20. Both species show CENH3-bound regions heavily enriched in CRM-type Ty3/Gypsy retrotransposons, though B. caapi contains additional LINE elements and satellites.
The players
Psychotria viridis
A hexaploid plant species native to the Amazon known for its synthesis of tryptamine alkaloids.
Banisteriopsis caapi
A diploid vine species found in the Amazon that produces beta-carboline alkaloids.
The details
The team identified specific enzymes responsible for alkaloid synthesis, noting that a single multifunctional methyltransferase converts tryptamine to DMT in P. viridis. In B. caapi, beta-carboline synthesis utilizes an acetaldehyde-dependent Pictet-Spengler cyclization—a chemical reaction where a nitrogen-containing compound forms a ring structure—which can proceed non-enzymatically before reaching completion through enantioselective oxidation to harmaline.
Timeline
The genome study was published on October 11, 2026.
The Tech Race
This effort aligns with the broader global push to catalog the genomes of significant plant species to understand their specialized metabolic pathways. It contributes to the growing genomic database that serves as a baseline for comparing how different species evolve complex chemical defenses.
This development currently exists as a research-stage study and does not change available products or current botanical applications. The data provides a technical reference for future academic research rather than immediate commercial or clinical utility.
The takeaway
The study successfully mapped the genetic architecture of two historically significant plants, identifying the specific enzymatic reactions used to create their unique alkaloid profiles. Future research will likely use these genomic sequences to investigate whether similar biosynthesis pathways exist in related plant families.
Further reading
For broader context on plant genome mapping, explore the latest research in Botany.
More information
Access the full study details in the biorxiv research paper.
Source note: This article includes information reported by Biorxiv.
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