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The Genius of Plant Flavonoids & their Function.

Flavonoids are widely distributed in plants, fulfilling many functions. Here is a look inside some of those. Flavonoids are the most important plant pigments for flower coloration, producing yellow or red/blue pigmentation in petals designed to attract pollinator animals especially bees (more on this and how flavonoids in cannabis here). In higher plants, flavonoids are involved in UV filtration, symbiotic nitrogen fixation and floral pigmentation. They may also act as chemical messengers, physiological regulators, and cell cycle inhibitors. In addition, some flavonoids have inhibitory activity against organisms that cause plant diseases, Eg. Fusarium oxysporum (galeotti, f; barile, e; curir, p; dolci, m; lanzotti, v (2008). "Flavonoids from carnation (dianthus caryophyllus) and their antifun gal activity". Phytochemistry letters 1: 44


Biological functions of plant flavonoids:


  • Reproduction – flower numbers and regulation of auxin transport

  • Yield colour / ripening protein / tannin / sugar formation

  • Disease resistance

  • Other plant health attributes such as yield quality.


Flavonoids have impact outside the plant as well. Secreted by the root of their host plant, flavonoids help rhizobia (like mycorrhizal fungi) in the infection stage of their symbiotic relationship with legumes like peas, beans, clover, and soy. In other words flavonoids help in propagation. More specifically, rhizobia living in soil are able to sense the flavonoids and this triggers the secretion of nod factors, which in turn are recognized by the host plant and can lead to root hair deformation and several cellular responses such as ion fluxes and the formation of a root nodule.


More info:


Flavonoid Wikipedia Page


Livescience.com article about flavonoids

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