| cannabis |
chemotaxonomy
via article |
Gene Networks Underlying Cannabinoid and Terpenoid Accumulation in Cannabis |
May 2019 |
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In addition to cloning variants of previously characterized genes, specifically CsTPS14CT ((-)-limonene synthase) and CsTPS15CT (beta--myrcene synthase) we functionally evaluated genes that encode enzymes with activities not previously described in cannabis, namely CsTPS18VF and CsTPS19BL (nerolidol/linalool synthases); CsTPS16CC (germacrene B synthase); and CsTPS20CT (hedycaryol synthase). This study lays the groundwork for developing a better understanding of the complex chemistry and biochemistry underlying resin accumulation across commercial cannabis strains.
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| cannabis |
chemotaxonomy
via article |
Genetic tools weed out misconceptions of strain reliability in Cannabis sativa: Implications for a budding industry |
May 2018 |
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Samples were examined for genetic similarity within strains, and also a possible genetic distinction between Sativa, Indica, or Hybrid types. The analyses revealed genetic inconsistencies within strains. Additionally, although there was strong statistical support dividing the samples into two genetic groups, the groups did not correspond to commonly reported Sativa/Hybrid/Indica types.
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| cannabis |
chemotaxonomy
via chemotaxonomy |
Variations in Terpene Profiles of Different Strains of Cannabis sativa L |
2011 |
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Although Hillig (2004) stated that differences on terpenoids in Cannabis are of limited use for taxonomic discrimination at the species level, with sesquiterpenes generally more useful than monoterpenes, we found that several monoterpenes markers can be powerful tools for discerning between mostly sativa and mostly indica biotypes
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| cannabis |
chemotaxonomy
via model |
Cannabinoid Inheritance Relies on Complex Genetic Architecture |
May 2019 |
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Cannabinoid inheritance is more complex than previously appreciated; among other genetic effects, cytogenetic and maternal contributions may be undervalued influences on cannabinoid ratios and concentrations.
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| cannabis |
chemotaxonomy
via review |
Cannabis Systematics at the Levels of Family, Genus, and Species |
Oct 2018 |
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Print fossil of the extinct genus Dorofeevia (=Humularia) reveals that Cannabis lost a sibling perhaps 20 million years ago (mya). Cannabis print fossils are rare (n=3 worldwide), making it difficult to determine when and where she evolved.
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| cannabis |
chemotaxonomy
via review |
The Case for the Entourage Effect and Conventional Breeding of Clinical Cannabis: No Strain, No Gain |
Jan 2019 |
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While labeled strains in common parlance, this term is acceptable with respect to bacteria and viruses, but not among Plantae. Given that such factors as plant height and leaflet width do not distinguish one Cannabis plant from another and similar difficulties in defining terms in Cannabis, the only reasonable solution is to characterize them by their biochemical/pharmacological characteristics. Thus, it is best to refer to Cannabis types as chemical varieties, or chemovars.
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| cannabis |
chemotaxonomy
via review |
A chemotaxonomic analysis of cannabinoid variation in Cannabis (Cannabaceae). |
Jun 2004 |
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Two biotypes (infraspecific taxa of unassigned rank) of C. sativa and four biotypes of C. indica were recognized. Mean THC levels and the frequency of B(T) were significantly higher in C. indica than C. sativa. The proportion of high THC/CBD chemotype plants in most accessions assigned to C. sativa was <25% and in most accessions assigned to C. indica was >25%. Plants with relatively high levels of tetrahydrocannabivarin (THCV) and/or cannabidivarin (CBDV) were common only in C. indica. This study supports a two-species concept of Cannabis.
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| cannabis |
chemotaxonomy
via study |
Genomic and Chemical Diversity in Cannabis |
Feb 2017 |
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We have combined data from existing sources and generated new data to create the largest sample set of Cannabis genomic sequence data published to date. These data and analyses will continue to facilitate the development of modernized breeding and quality assurance tools, which are lacking in the nascent legal Cannabis industry.
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