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Pacific Biosciences is committed to providing high-quality products that meet customer expectations and comply with regulations. We will achieve these goals by adhering to and maintaining an effective quality-management system designed to ensure product quality, performance, and safety.

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Tuesday, April 21, 2020

Closing the Yield Gap for Cannabis: A Meta-Analysis of Factors Determining Cannabis Yield.

Until recently, the commercial production of Cannabis sativa was restricted to varieties that yielded high-quality fiber while producing low levels of the psychoactive cannabinoid tetrahydrocannabinol (THC). In the last few years, a number of jurisdictions have legalized the production of medical and/or recreational cannabis with higher levels of THC, and other jurisdictions seem poised to follow suit. Consequently, demand for industrial-scale production of high yield cannabis with consistent cannabinoid profiles is expected to increase. In this paper we highlight that currently, projected annual production of cannabis is based largely on facility size, not yield per square meter. This meta-analysis of…

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Monday, March 30, 2020

Webinar: Smoking out structural variants in the cannabis genome

In this webinar, Sarah Kingan, Staff Scientist, PacBio, and Kevin McKernan, Founder and Chief Science Officer, Medicinal Genomics, describe their work assembling the most comprehensive and complete cannabis genome of a Type II (THCA and CBDA producing) plant. They also share the latest advances in cannabis genomics, including how PacBio long-read sequencing enables high-quality genomics research in plants, annotation of the cannabis reference genome using full-length transcript sequencing, and new insights into cannabinoid synthesis across different types of cannabis plants.

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Sunday, September 22, 2019

Cryptocurrencies and Zero Mode Wave guides: An unclouded path to a more contiguous Cannabis sativa L. genome assembly

We describe the use ofa Decentralized Autonomous Organization (DAO) to crypto- fund the single molecule sequencing and publication ofa Type ll Cannabis plant. This resulted in the construction of the most contiguous Cannabis genome assembly to date. The combined use of the Dash cryptocurrency, DAOs, and Pacific Biosciences sequencing delivered a 1.03 Gb genome with a N50 of 665Kb in 77 days from funding to public upload. This represents a 230 fold improvement in the contiguity of the first cannabis assemblies in 2011 and a 4 fold improvement over all cannabis assemblies to date. 34Gb ofadditional sequencing pushed the assembly…

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Sunday, July 7, 2019

Single molecule sequencing of THCA synthase reveals copy number variation in modern drug-type Cannabis sativa L.

Cannabinoid expression is an important genetically determined feature of cannabis that presents clinical and legal implications for patients seeking cannabinoid specific therapies like Cannabidiol (CBD). Cannabinoid, terpenoid, and flavonoid marker assisted selection can accelerate breeding efforts by offering genetic tools to select for desired traits at an early stage in growth. To this end, multiple models for chemotype inheritance have been described suggesting a complex picture for chemical phenotype determination. Here we explore the potential role of copy number variation of THCA Synthase using phased single molecule sequencing and demonstrate that copy number and sequence variation of this gene is…

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Sunday, July 7, 2019

Terpene synthases from Cannabis sativa.

Cannabis (Cannabis sativa) plants produce and accumulate a terpene-rich resin in glandular trichomes, which are abundant on the surface of the female inflorescence. Bouquets of different monoterpenes and sesquiterpenes are important components of cannabis resin as they define some of the unique organoleptic properties and may also influence medicinal qualities of different cannabis strains and varieties. Transcriptome analysis of trichomes of the cannabis hemp variety ‘Finola’ revealed sequences of all stages of terpene biosynthesis. Nine cannabis terpene synthases (CsTPS) were identified in subfamilies TPS-a and TPS-b. Functional characterization identified mono- and sesqui-TPS, whose products collectively comprise most of the terpenes…

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Sunday, July 7, 2019

Genetic and genomic tools for Cannabis sativa

The Cannabis industry is currently one of the fastest growing industries in the United States. Given the changing legal status of the plant, and the rapidly advancing research, updated information on the advancement of Cannabis genomics is needed. This versatile plant is used as medicine and for food, fiber, and bioremediation. Insights from modern, high-throughput genomic technology are revolutionizing our understanding of the plant and are providing new tools to further improve our knowledge and utilization of this unique species. This review quantifies and evaluates the currently available genomic resources for Cannabis research, including six whole-genome assemblies, two transcriptomes, and…

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