I'm just gonna put this here...hopefully you catch, and don't mind (you know who you are)
Hey thanks for that. I myself have said on several occasions that uv-b will increase thc. Mainly because I've heard it said so many times. Have even heard that its use will cause hash (in suspension) to increase thc....or thcv as fin stated.
But being that I'm fairly well versed in these matters I've always crossed my fingers hoping nobody would ask why I thought this would happen..cause frankly I don't see how
So my question was partially to fuck with fin. And partially a real question. trying to figure where UV would fit in the equation and how..whether directly or indirectly its pretty apparent to most that mh/cfl produces better bud...
(Someone asked if thc was only produced in trichomes, this is my response......I'm quite fond of my "in-depth" replies so you get the whole thing...(important bit is the beginning)
Thc is only found in trichomes. There are several types of trichome found on every inch of the plant even in veg.. Geranyl pyrophosphate and a precursor to olivetolic acid react, a c12 (for pentyl) c10(for propyl)polyketide,catalysed by an enzyme to produce cannabigerolic acid,. The production of Thc (and propyl)thcv cbdv cbd and cbc cbcv are controlled by 3 different enzymes Thca synthase being the enzyme converting cbga to thc through an oxidative cyclization of the geranyl group on cbga(of course this is a bit simplified for y'all) geranyl diphosphate + olivetolate <=> cannabigerolate + diphosphate cannabigerolate + O(2) <=> Delta(9)-tetrahydrocannabinolate + H(2)O(2)
This combination can only occur within the secretory cavity of the trichome through vesicles..
In general secondary metabolites are toxic and must be held in a storage cavity to prevent cell deathand indeed thca and cbga cause 100% cell death in 10 day old suspension cultured cannabis sativa cells at 50um(through apoptosis). The cannabinoid precursors do not have this effect and some can be found in leaf material The results of reverse transcription–PCR (RT–PCR) and heterologous expression suggest that THCA synthase is localized in the apoplastic space of the glandular trichome only
The trichomes themselves protect the plant as well as the terpenes inside. Thc acts as a defensive mechanism killing insect cells as well as the plants own cells. Cannabinoids must be excreted into a cavity to protect the plant and provide its defenses
So UV can increase cannabinoid content through olivetolic acid. Or atleast a precursor.. no that does not increase thc or thcv in hash. But it doesn't select for thcv and it relies on their being excess enzymes..which is the case in certain strains.....
So thanks I think I've got it now......this is kind of a big ramble but whatever
No thanks to you fin!