Marijuana Users have had many opportunities to wonder where their highly beloved, but highly malicious cannabis plants came from. They don’t have to wonder anymore. New genetic research reveals that potted plants have roots in what is now northwestern China. Here, the local strain is most similar to the original strain of cannabis grown over 12,000 years ago.
Research — the largest ever in the entire genome Cannabis The plant adds an additional 82 genomes to the already sequenced 28 — cannabis was probably first domesticated in the early Neolithic region near the border between Kazakhstan and Kyrgyzstan, and varied from there. The world as a variety.
Researchers have identified a previously unknown “basic type” of cannabis plants in northwestern China, Luka Fumagari, a geneticist at the University of Lausanne in Switzerland, told live science.
Cannabis plants are so prevalent today that there is considerable scientific debate about where they came from, and the proposals include West Asia, Central Asia, and northern China, Fumagali said.
“People thought the region was heading for Central Asia, mostly because of the abundance of wildlife. [wild] Cannabis plants along the road there, “he said. “But this observational data was basically inconsistent with what we got from genomic analysis.”
Instead, the study found that cannabis plants from Central Asia “hemp Type, “he said. That is, a tall, unbranched plant with cellulose-rich stems suitable for producing rope and textile fibers. It was not the so-called basic type, suitable for both fiber production and psychoactive effects.
Today, most biologists are thinking of two types of cannabis — Cannabis indica And Cannabis squirrel de la squirrel — A subspecies of a single species within the genus Cannabis sativa, It was domesticated about 12,000 years earlier.
The era is confirmed by archaeological evidence, including traces of ancient cannabis seeds found in pottery of the time in southern China, Taiwan, and Japan.
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According to Fumagali, genetic studies show that all cannabis plants living today are descendants of domesticated plants in their original areas. Cannabis sativa Probably now extinct.
Various types of cannabis should have begun to diverge from the basic form sometime after domestication, and studies have probably begun about 4,000 years ago, as people began to choose plants for fiber production. Said that hemp type became prominent.
Cannabis-type strains of cannabis are currently growing wild in Europe, Central Asia, and some parts of northern China. Currently, the strains of cannabis that are commercially cultivated for narcotics are only from the narcotics types selected for the high levels of psychotropic drugs they produce.Wild drug-type strains now grow wild throughout South and Southeast Asia, with cannabis predominantly over the past millennia. Marijuana psychotropic effect, He said.
Most notably, the four cannabis differ in the collection of genes that control the production of two specific acidic cannabinoids. CBDA produces chemicals. CBD Notable in hemp-type varieties and THCA, which produces more psychoactive chemicals THC..
In the factory, both CBDA and THCA are manufactured and competing with the same raw materials, cannabidiolophosphate or CBGA. Scientists believe that both groups of genes probably play a major role in the defense of plants. Nonetheless, researchers write that genes produce very different effects for different plant types, the hemp type favors the production of CBDA gene aggregates, and the drug type favors THCA gene aggregates.
They said cannabis has long been regarded as an important source fiber It is a source of narcotics and recreational narcotics as well as textiles, but due to both legal restrictions and secret breeding of narcotics, it has been difficult to identify its domestication history.
But that is starting to change now. “Our research is [the] Plants with diverse structural and biochemical products during a period of renewed interest in their use, reflecting changing social attitudes and their corresponding challenges to legal status in many countries. Global spread, “the researchers wrote.
New genetic research aims to serve as a resource for cannabis medical and agricultural research. “East Asia has been shown to be an important ancient domestication hotspot for some crop species, including rice, sorghum, millet, soybeans, foxes, apricots and peaches … and therefore ours. The results add another evidence of the importance of this domestication. Hotspots. “
This study was published in the journal on Friday (July 16th) Science Advances..
Originally published in Live Science.
Cannabis originated in China, genetic analysis reveals
Source link Cannabis originated in China, genetic analysis reveals