20.500.12556/DiRROS-24165 Molecular shield for protection of buckwheat plants from UV-B radiation Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn.) and common buckwheat (Fagopyrum esculentum Moench) are adapted to growing in harsh conditions of high altitudes. Ultraviolet radiation at high altitudes strongly impacts plant growth and development. Under the influence of ultraviolet radiation, protecting substances are synthesized in plants. The synthesis of UV-B defense metabolites is genetically conditioned, and their quantity depends on the intensity of the ultraviolet radiation to which the plants and plant parts are exposed. These substances include flavonoids, and especially rutin. Other substances with aromatic rings of six carbon atoms have a similar function, including fagopyrin, the metabolite specific for buckwheat. Defensive substances are formed in the leaves and flowers of common and Tartary buckwheat, up to about the same concentration in both species. In comparison, the concentration of rutin in the grain of Tartary buckwheat is much higher than in common buckwheat. Flavonoids also have other functions in plants so that they can protect them from pests and diseases. After crushing the grains, rutin is exposed to contact with the molecules of rutin-degrading enzymes. In an environment with the necessary humidity, rutin is turned into bitter quercetin under the action of rutin-degrading enzymes. This bitterness has a deterrent effect against pests. Moreover, flavonoids have important functions in human nutrition to prevent several chronic diseases, including obesity, cardiovascular diseases, gallstone formation, and hypertension. buckwheat rutin quercetin flavonoid secondary metabolites UV radiation altitude climatic change ajda sekundarni metaboliti rutin kvercetin flavonoidi UV sevanje klimatske spremembe nadmorska višina true false true Angleški jezik Slovenski jezik © 2022 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2025-11-18 08:42:42 2025-11-19 12:26:20 2025-11-20 03:44:38 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Opis vira z dne 27. 10. 2022; 11 str. iss. 17, art. 5577 Vol. 27 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-01-01 633 1420-3049 127390467 https://www.mdpi.com/1420-3049/27/17/5577 1 2c6e4a98-c452-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35965 RAZ_Kreft_Ivan_2022.pdf RAZ_Kreft_Ivan_2022.pdf 1 203A5AC4F63E198F88CEE512932D44E9 84be1ae276994a3c9756177f04e7390bcd258a603653a66855e7b8a85bef2792 7e783d50-c53a-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36018 Inštitut za nutricionistiko 0 0 0