rhodiola tibetica/tyrosine

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A tyrosine decarboxylase catalyzes the initial reaction of the salidroside biosynthesis pathway in Rhodiola sachalinensis.

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Salidroside, the 8-O-β-D-glucoside of tyrosol, is the main bioactive component of Rhodiola species and is found mainly in the plant roots. It is well known that glucosylation of tyrosol is the final step in the biosynthesis of salidroside; however, the biosynthetic pathway of tyrosol and its

Isolation and genotype-dependent, organ-specific expression analysis of a Rhodiola rosea cDNA encoding tyrosine decarboxylase.

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Tyrosine decarboxylase (TyrDC) is an important enzyme in the secondary metabolism of several plant species, and was hypothesized to play a key role in the biosynthesis of salidroside, a pharmacologically valuable compound of roseroot. A 1520bp cDNA was cloned and sequenced, and turned out to contain

Engineering salidroside biosynthetic pathway in hairy root cultures of Rhodiola crenulata based on metabolic characterization of tyrosine decarboxylase.

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Tyrosine decarboxylase initializes salidroside biosynthesis. Metabolic characterization of tyrosine decarboxylase gene from Rhodiola crenulata (RcTYDC) revealed that it played an important role in salidroside biosynthesis. Recombinant 53 kDa RcTYDC converted tyrosine into tyramine. RcTYDC gene

Salidroside production by hairy roots of Rhodiola sachalinensis obtained after transformation with Agrobacterium rhizogenes.

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Hairy roots induced by Agrobacterium rhizogenes grow faster, and are considered as genetically stable. These hairy roots can be used as an interesting material for the production of secondary metabolites of pharmaceutical value. Salidroside has been identified as the major compounds from the roots

Strategies for the improvement of salidroside production in cell suspension cultures of Rhodiola sachalinensis.

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Strategies of elicitation and precursor feeding were applied to improve salidroside production in cell suspension cultures of Rhodiola sachalinensis. Of the seven elicitors examined, that extracted from Aspergillus niger was the most effective, increasing the salidroside content by five-fold when

Inhibitory effect of p-coumaric acid by Rhodiola sachalinensis on melanin synthesis in B16F10 cells.

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Rhodiola has been widely used in traditional Asian medicine. In this study, we tested the hypopigmentation effects of R. sachalinensis and its active compounds including catechin, chlorogenic acid, p-coumaric acid, and p-tyrosol. Results have shown that only p-coumaric acid inhibits melanin

[Salidroside biosynthesis pathway: the initial reaction and glycosylation of tyrosol].

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Salidroside, the 8-O-beta-D-glucoside of tyrosol, is a novel adaptogenic drug extracted from the medicinal plant Rhodiola sachalinensis A. Bor. Due to the scarcity of R. sachalinensis and its low yield of salidroside, there is great interest in enhancing the production of salidroside by

Fungal endophyte-induced salidroside and tyrosol biosynthesis combined with signal cross-talk and the mechanism of enzyme gene expression in Rhodiola crenulata.

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Endophyte is a factor that affects the physiology and metabolism of plant. However, limited information is available on the mechanism of interaction between endophyte and plant. To investigate the effects of endophytic fungus ZPRs-R11, that is, Trimmatostroma sp., on salidroside and tyrosol

[Effect of endophytic fungus on expression of key enzyme genes in pathway of salidroside biosynthesis in Rhodiola crenulata].

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One strain of endophytic fungus ZPRa-R-1 was obtained for the capacity of promoting production of salidroside in Rhodiola crenulata. To explain the mechanism of salidroside biosynthesis in host plant, eight housekeeping genes were evaluated, and the evaluation method was created for the expression

Effects of overexpression of endogenous phenylalanine ammonia-lyase (PALrs1) on accumulation of salidroside in Rhodiola sachalinensis.

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Salidroside, a novel effective adaptogenic drug extracted from the medicinal plant Rhodiola sachalinensis A. Bor, can be derived from phenylalanine or tyrosine. Due to the scarcity of R. sachalinensis and its low yield of salidroside, there is great interest in enhancing production of salidroside by

[Investigation of a compound, compatibility of Rhodiola crenulata, Cordyceps militaris, and Rheum palmatum, on metabolic syndrome treatment I--improving insulin resistance].

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To investigate the effects of a compound (FF16), compatibility of Rhodiola crenulata, Cordyceps militaris, and Rheum palmatum, on insulin resistance. The results showed that FF16 significantly improved the insulin sensitivity through decreasing AUC values in insulin tolerance tests by 24.1%, 38.5%;

Tyrosol and its analogues inhibit alpha-melanocyte-stimulating hormone induced melanogenesis.

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Melanin is responsible for skin color and plays a major role in defending against harmful external factors such as ultraviolet (UV) irradiation. Tyrosinase is responsible for the critical steps of melanogenesis, including the rate-limiting step of tyrosine hydroxylation. The mechanisms of action of

Complete Pathway Elucidation and Heterologous Reconstitution of Rhodiola Salidroside Biosynthesis.

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Salidroside is a bioactive tyrosine-derived phenolic natural product found in medicinal plants under the Rhodiola genus. In addition to their anti-fatigue and anti-anoxia roles in traditional medicine, Rhodiola total extract and salidroside have also displayed medicinal properties as

Salidroside induces rat mesenchymal stem cells to differentiate into dopaminergic neurons.

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Parkinson's disease (PD) is a neurodegenerative disorder characterised by the loss of substantia nigra dopaminergic neurons that leads to a reduction in striatal dopamine (DA) levels. Replacing lost cells by transplanting dopaminergic neurons has potential value to repair the damaged brain.

Salidroside inhibits the proliferation and migration of gastric cancer cells via suppression of Src‑associated signaling pathway activation and heat shock protein 70 expression.

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Salidroside, an active ingredient extracted from the Rhodiola rosea plant, has potential anti‑tumor effects. However, the effects of salidroside on gastric cancer cell proliferation and migration remain unclear. In the present study, the inhibitory effects of salidroside on gastric cancer cell

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