Study Reveals 227 Cannabis Terpenes: Exploring the Unique Aromas of Different Cultivars
Researchers found that genetic differences play a big role in terpene production
A recent study has uncovered 227 terpenes found in cannabis, revealing why different cannabis cultivars have their unique aromas. These aromatic compounds play a crucial role in the scent of cannabis, presenting a range of odors from citrus and pine to floral, spicy, and earthy notes.
How Does Genetic Variation Influence Terpene Profiles?
Published in Acta Pharmaceutica Sinica B, the study combines genetic sequencing, terpene measurements, and gene-expression analysis to create the most thorough map of the terpene synthase system in Cannabis sativa to date. Researchers analyzed samples from 28 different tissues and six cultivars, identifying the vast diversity of terpenes present.
Where Are Terpenes Found in the Cannabis Plant?
The study found that the distribution of terpenes changes significantly depending on the part of the plant and its developmental stage. Flowers and bracts were the primary sites for terpene production, while roots and mature seeds had almost none. For example, in the Dinamed Kush cultivar, only a few terpenes were detected in roots and seeds.
What Are the Most Common Terpenes in Cannabis?
Across the six cannabis cultivars studied, the five most prevalent terpenes were:
1. Beta-myrcene
2. Trans-beta-ocimene
3. Terpinolene
4. (-)-beta-pinene
5. Alpha-pinene
Some cultivars stood out with higher levels of specific compounds, such as Red Pure with elevated beta-myrcene and George Gloria known for guaiol and camphene.
How Do Gene Variations Affect Terpene Production?
The researchers found that genetic differences play a significant role in terpene production. For example, one cultivar, Painkiller, displayed lower levels of trans-beta-ocimene due to reduced expression of a specific terpene synthase gene. This connection illustrates how gene activity can influence the plant's terpene profile.
How Complex Are the Genes Behind Terpene Production?
Researchers identified 56 potential terpene synthase genes and narrowed them down to 41 functional genes. Interestingly, many of these genes appeared in clusters created through gene duplication, showing that the genetic variants inherited by plants can impact their terpene capabilities significantly.
What Connections Exist Between Terpene and Cannabinoid Production?
The study also discovered that the production of terpenes and cannabinoids is closely linked. A network analysis identified 3,496 genes correlated with at least one terpene, highlighting the complex relationships between metabolic pathways in cannabis.
This groundbreaking research not only deepens our understanding of cannabis terpenes but also opens the door for future studies on how terpenes can influence the medicinal effects of cannabinoids. The unique scent profiles of cannabis cultivars are a result of complex genetic interactions, and this knowledge can aid both growers and consumers in choosing the right strains that best meet their needs.
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Liz Filmer
