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Evaluation of a significant part of the phenylpropanoid pathway metabolites is facilitated by the fast high-performance liquid chromatography with electrospray ionization tandem mass spectrometry (LC-MS/MS) analytical method. The technology described was applied in tobacco plants (Nicotiana tabacum
In higher plants, secondary metabolites are often converted to their glycoconjugates by glycosyltransferases (GTases). We cloned a cDNA encoding GTase (NtGT2) from tobacco (Nicotiana tabacum L.). The recombinant enzyme expressed in Escherichia coli (rNTGT2) showed glucosylation activity against
The plant-tumorigenic 6b (AK-6b) gene of Agrobacterium tumefaciens strain AKE10 induces morphological alterations to tobacco plants, Nicotiana tabacum. To investigate the molecular mechanisms underlying these processes, we generated transgenic tobacco harboring the AK-6b gene under the control of a
The physiologically mature tobacco (Nicotiana tabacum) leaves was exposed to different light-emitting diode (LED) lights, i.e. ultraviolet A (UV-A), blue, green, yellow, red, white, to investigate their short-term response. Results showed that: 1) 68 GC/MS-stable metabolites were detected by
Flavonol synthase (FLS) belongs to the 2-oxoglutarate-dependent dioxygenase (2-ODD) superfamily. We isolated OsFLS from the rice ( Oryza sativa) cultivar "Ilmi" OsFLS includes highly conserved 2-ODD-specific motifs and FLS-specific regions. Recombinant OsFLS exhibited both FLS and
Tea possesses a distinctive flavor profile and can have health benefits owing to the high levels of flavonoids in its leaves. However, the mechanism of the flavonoid glycosylation hasn't been well studied in tea plants, especially glycosylation at the 7-OH site has rarely been reported. In this
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UGT79B31 encodes flavonol 3- O -glycoside: 2″- O -glucosyltransferase, an enzyme responsible for the terminal modification of pollen-specific flavonols in Petunia hybrida. Flavonoids are known to be involved in pollen fertility in petunia (P. hybrida) and maize (Zea mays). As a first step
Tea (Camellia sinensis) is an important commercial crop, in which the high content of flavonoids provides health benefits. A flavonoid glycosyltransferase (CsUGT73A20), belonging to cluster IIIa, was isolated from tea plant. The recombinant CsUGT73A20 in Escherichia coli exhibited a broad substrate
The plant metabolite montbretin A (MbA) and its precursor mini-MbA are potential new drugs for treating type 2 diabetes. These complex acylated flavonol glycosides only occur in small amounts in the corms of the ornamental plant montbretia (Crocosmia × crocosmiiflora). Our goal is to
The effect of anther-derived substances on pollen function was studied using pollen produced by in vitro culture of immature pollen of tobacco (Nicotiana tabacum L.) and petunia (Petunia hybrida). Addition of conditioned medium consisting of diffusates from in situ matured pollen strongly increased
Biochemical, transgenic, and genetic complementation data demonstrate that three glutathione S-transferases are involved in the storage of anthocyanins, flavonols, and proanthocyanins in plant cells. Flavonoids are compounds in tea (Camellia sinensis) that confer the characteristic astringent taste
We analysed and compared the functioning of UV-B screening pigments in plants from marine, fresh water and terrestrial ecosystems, along the evolutionary line of cyanobacteria, unicellular algae, primitive multicellular algae, charophycean algae, lichens, mosses and higher plants, including