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Related Experiment Video

Updated: Jun 13, 2026

Non-Aqueous Isolation and Enrichment of Glandular Capitate Stalked and Sessile Trichomes from Cannabis sativa
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Published on: May 12, 2023

Heads Up: Transcriptomics Reveal Functional Roles of Cannabis Glandular Trichome Stalks.

Paolo Miguel Siazon1, Matthew Nolan2, Qi Guo1

  • 1Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia.

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PubMed
Summary

The Cannabis sativa glandular trichome stalk, distinct from its head, plays a crucial role in metabolite transport and signaling. This finding offers new targets for optimizing cannabinoid production.

Keywords:
Cannabis sativaglandular trichomeplasmodesmatasource-sinktranscriptomicstransporter

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Area of Science:

  • Plant Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Cannabis sativa glandular trichomes (CsGT) are key sites for cannabinoid biosynthesis.
  • The head of CsGT is known for biosynthesis, but the stalk's function is less understood.

Purpose of the Study:

  • To identify the distinct roles of CsGT head and stalk tissues using integrated multi-omics analysis.
  • To characterize the functional contribution of the CsGT stalk in cannabinoid production.

Main Methods:

  • Integrated proteomic and transcriptomic analysis of isolated CsGT head and stalk tissues.
  • Marker gene analysis to identify cell type signatures in head and stalk.

Main Results:

  • Transcriptomic analysis revealed 6018 genes with higher expression in the stalk compared to the head.
  • Stalk cells showed signatures for vascular and epidermal types, while head cells were predominantly epidermal.
  • Stalk gene expression is enriched for growth, transport, and signaling, contrasting with the head's secondary metabolite production.

Conclusions:

  • The CsGT stalk is a complex epidermal tissue distinct from the head.
  • The stalk facilitates metabolite transport, signaling, and precursor supply to the glandular head.
  • The stalk is a key contributor to trichome productivity and a potential target for cannabinoid yield optimization.