Evidence map›Paper›PMID 33526123›Full record

ArticleJournal of cannabis research2020

A single nucleotide polymorphism assay sheds light on the extent and distribution of genetic diversity, population structure and functional basis of key traits in cultivated north American cannabis.

Philippe Henry, Surender Khatodia, Karan Kapoor, Britni Gonzales, Alexis Middleton, Kevin Hong, Aaron Hilyard, Steve Johnson, Davis Allen, Zachary Chester and 12 more

Abstract read
In one paragraph

Article in Journal of cannabis research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

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  8. Morphometric approaches toVegetation history and archaeobotany · 2024
    Article
  9. Molecules (Basel, Switzerland) · 2023
    Review
  10. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

22 authors.

Philippe HenryVSSL Enterprises Ltd., West Kelowna, BC, Canada. philippe@egret.bio.ORCID http://orcid.org/0000-0002-6475-1714
Surender KhatodiaVSSL Enterprises Ltd., West Kelowna, BC, Canada.
Karan KapoorVSSL Enterprises Ltd., West Kelowna, BC, Canada.
Britni GonzalesDigipath Labs Inc., Las Vegas, NV, USA.
Alexis MiddletonDigipath Labs Inc., Las Vegas, NV, USA.
Kevin HongDigipath Labs Inc., Las Vegas, NV, USA.
Aaron HilyardDigipath Labs Inc., Las Vegas, NV, USA.
Steve JohnsonDigipath Labs Inc., Las Vegas, NV, USA.
Davis AllenIsland Genetics Ltd., Vancouver, BC, Canada.
Zachary ChesterIsland Genetics Ltd., Vancouver, BC, Canada.
Dan JinBiomedical Engineering, University of Alberta, Edmonton, AB, Canada.
José Carlos Rodriguez JuleOkanagan Gold Cannabis Corp, West Kelowna, BC, Canada.
Iain WilsonOkanagan Gold Cannabis Corp, West Kelowna, BC, Canada.
Manu GangolaThe Flowr Group (Okanagan) Inc., Kelowna, BC, Canada.
Jason BroomeThe Flowr Group (Okanagan) Inc., Kelowna, BC, Canada.
Deron CaplanThe Flowr Group (Okanagan) Inc., Kelowna, BC, Canada.
Dinesh AdhikaryBiology, The University of British Columbia Okanagan, Kelowna, BC, Canada.
Michael K DeyholosBiology, The University of British Columbia Okanagan, Kelowna, BC, Canada.
Michael MorganBiology, The University of British Columbia Okanagan, Kelowna, BC, Canada.
Oliver W HallNoble Growth Corp, Drayton Valley, AB, Canada.
Brent J GuppySynthase Genetics Inc., Winnipeg, MB, Canada.
Cindy OrserDigipath Labs Inc., Las Vegas, NV, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe taxonomic classification of Cannabis genus has been delineated through three main types: sativa (tall and less branched plant with long and narrow leaves), indica (short and highly branched plant with broader leaves) and ruderalis (heirloom type with short stature, less branching and small thick leaves). While still under discussion, particularly whether the genus is polytypic or monotypic, this broad classification reflects putative geographical origins of each group and putative chemotype and pharmacologic effect.

methodsHere we describe a thorough investigation of cannabis accessions using a set of 23 highly informative and polymorphic SNP (Single Nucleotide Polymorphism) markers associated with important traits such as cannabinoid and terpenoid expression as well as fibre and resin production. The assay offers insight into cannabis population structure, phylogenetic relationship, population genetics and correlation to secondary metabolite concentrations. We demonstrate the utility of the assay for rapid, repeatable and cost-efficient genotyping of commercial and industrial cannabis accessions for use in product traceability, breeding programs, regulatory compliance and consumer education.

resultsWe identified 5 clusters in the sample set, including industrial hemp (K5) and resin hemp, which likely underwent a bottleneck to stabilize cannabidiolic acid (CBDA) accumulation (K2, Type II & III). Tetrahydrocannabinolic acid (THCA) resin (Type I) makes up the other three clusters with terpinolene (K4 - colloquial "sativa" or "Narrow Leaflet Drug" (NLD), myrcene/pinene (K1) and myrcene/limonene/linalool (K3 - colloquial "indica", "Broad Leaflet Drug" (BLD), which also putatively harbour an active version of the cannabichrometic acid Synthase gene (CBCAS).

conclusionThe final chemical compositions of cannabis products have key traits related to their genetic identities. Our analyses in the context of the NCBI Cannabis sativa Annotation Release 100 allows for hypothesis testing with regards to secondary metabolite production. Genetic markers related to secondary metabolite production will be important in many sectors of the cannabis marketplace. For example, markers related to THC production will be important for adaptable and compliant large-scale seed production under the new US Domestic Hemp Production Program.

Indexed as

CannabinoidsCannabisComplianceGenetic assayHempPopulation structureTerpenes

Identifiers

PMID33526123
PMCPMC7819309

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.