Plantamajoside — A current review

Ravn, Helle Weber; Mondolot, Laurence; Kelly, Mary T.; Lykke, Anne Mette

doi:10.1016/j.phytol.2015.02.002

Cited by 23 publications

(18 citation statements)

References 94 publications

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“…Plantamajoside concentration: Plantamajoside is a bioactive caffeic acid derivative, a dihydroxyphenethyl glucoside in the group of polyphenolic compounds (Ravn et al 2015), which plays important physiological and ecological roles, being involved in resistance to ultraviolet radiation, elevated CO2 values and pesticides (Davey et al 2004, Murai et al 2009, Ravn 2009). In the present study, increased water supply significantly increased plantamajoside concentration and yield in shoots and roots.…”

Section: Soluble Sugar Contentmentioning

confidence: 99%

“…Plantamajoside is mainly found in the Plantaginaceae family and in the Plantago genus in particular (Ravn et al 2015). Twenty species belonging to the genus Plantago contain plantamajoside (Ravn et al 2015), including our study species, Plantago depressa Willd., which is a weed widely distributed in China, Afghanistan, Bhutan, India, Kashmir, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Pakistan, and E Russia (Li et al 2011). The dried herb of P. depressa, 'Plantago Herba', has been used historically as medicine in China for the treatment of clearing heat, diuresis, eliminating phlegm, cooling blood, and detoxifying and plantamajoside concentration is treated as a test and evaluation index of P. depressa (National Pharmacopoeia Committee 2010).…”

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

“…Plantamajoside, which is a bioactive caffeic acid derivative, is a dihydroxyphenethyl glucoside in the group of polyphenolic compounds (Ravn et al 2015), has several defense functions and is generally induced in response to biotic and abiotic stimuli such as ultraviolet radiation, elevated CO2, and pesticides (Davey et al 2004, Murai et al 2009, Ravn 2009). Plantamajoside is mainly found in the Plantaginaceae family and in the Plantago genus in particular (Ravn et al 2015). Twenty species belonging to the genus Plantago contain plantamajoside (Ravn et al 2015), including our study species, Plantago depressa Willd., which is a weed widely distributed in China, Afghanistan, Bhutan, India, Kashmir, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Pakistan, and E Russia (Li et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The dried herb of P. depressa, 'Plantago Herba', has been used historically as medicine in China for the treatment of clearing heat, diuresis, eliminating phlegm, cooling blood, and detoxifying and plantamajoside concentration is treated as a test and evaluation index of P. depressa (National Pharmacopoeia Committee 2010). Previous studies have shown that the plantamajoside concentration is affected by the age and organs of plants (Fons et al 1998, Zubair et al 2011, and also depends on growth conditions (Ravn et al 2015). However, little is known about plantamajoside concentration responses to changes in precipitation regimes.…”

Section: Introductionmentioning

confidence: 99%

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Increased water supply promotes photosynthesis, C/N ratio, and plantamajoside accumulation in the medicinal plant Plantago depressa Willd

Bai

Zhang

et al. 2016

Photosynt.

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Anthropogenic activities are changing global precipitation regimes and result in many mid latitude arid and semiarid regions experiencing less precipitation and more extreme weather events. However, little is known about the response of active ingredient accumulation in the medicinal herb Plantago depressa Willd. Therefore, we carried out a greenhouse experiment in order to study effect of control (CK, normal water supply equal to 309 mm per four months), −30 (−WS) and +30% (+WS) of the control water supply on the photosynthesis (P N ), C/N ratio, and plantamajoside accumulation in P. depressa. Our results showed that compared with the -WS and CK treatments, the +WS treatment significantly enhanced biomass, the C/N ratio, plantamajoside concentration, yield in shoots and roots, and P N , but declined the N concentration in shoots and roots. The plantamajoside concentration was positively correlated with P N , the soluble sugar content, and the C/N ratio, but negatively correlated with the N concentration. Our results suggested that, under experimental conditions, +WS increased the C/N ratio and promoted the plantamajoside accumulation of P. depressa.

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Section: Soluble Sugar Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Increased water supply promotes photosynthesis, C/N ratio, and plantamajoside accumulation in the medicinal plant Plantago depressa Willd

Bai

Zhang

et al. 2016

Photosynt.

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Phenylpropanoid Metabolism

Rock

2017

Encyclopedia of Life Sciences

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Phenylpropanoid compounds encompass a wide range of structural classes with diverse biological functions in defence, survival and structural support associated with normal plant development (belying the term 'secondary metabolite'). The biosynthesis of phenylpropanoids is regulated by diverse environmental stimuli. Phenylpropanoid metabolism (other than flavonoids, not covered here) occupies a central place in the general aromatic metabolism of plants from shikimate to phenylalanine to lignin polymers and also to coumarins, phenolic volatiles and hydrolysable tannins. In recent years, genetics and biochemistry, along with methodology‐driven, computational, transgenic and comparative transcriptomic approaches, have led to significant advances in the identification of the families of genes encoding enzymes, transporters, regulatory factors involved in phenylpropanoid metabolism and a clearer picture of their functions in biotic and abiotic stress responses, plant development and enzyme/pathway evolution driven by interactions of species with their environment. Key Concepts Having one phenyl aromatic ring with one or more hydroxyl groups attached gives phenylpropanoids amphiphilic and reducing properties, underlying their ability to physically interact with other biomolecules. Plants invest a large percentage of their fixed carbon into synthesising phenylpropanoids, from simple volatile phenolic acids such as the defence hormone salicylic acid to complex polyphenolic flavonoids encompassing thousands of compounds with myriad physiological and adaptive functions. The shikimate pathway is the starting point for phenylpropanoid biosynthesis from shikimate product phenylalanine ( l ‐Phe), via the intermediate chorismate, which also serves as substrate for the synthesis of quinones and tocopherols important as electron acceptors in photosynthesis and aerobic respiration. Phenylpropanoid biosynthesis proceeds from deamination of Phe to cinnamate by the rate‐limiting and environmentally regulated enzyme PAL, followed by oxidation of the ring to p ‐coumarate, its activation with coenzymeA and a series of hydroxylation, methylation and reduction reactions to give cinnamic acids, ‐aldehydes and ‐alcohols that serve as substrates to generate a wide range of complex structures, notably polymers of coumaroyl, conferyl and sinapyl alcohols comprising lignin. Recent studies have established the major pathway in plants which proceeds from p ‐coumaroyl‐CoA → p ‐coumaryl‐shikimate → caffeoyl‐shikimate → caffeoyl‐CoA → feruloyl CoA → coniferaldehyde → 5‐OH coniferaldehyde → sinapaldehyde → sinapate/sinapyl alcohol (oxidation versus reduction, respectively), instead of the original model of a grid/matrix of parallel ring oxidation and side‐chain redox pathways from hydroxycinnamic acids to alcohols. Synthesis involves three subcellular compartments: chloroplast for Phe, cytosol for sinapoyl‐esters and the vacuole for trans‐esterifications. The identity of specific transporters, temporal‐ or organ‐specific regulatory factors for phenylpropanoid flux to (in)soluble polymers in the apoplast in response to biotic and abiotic stressors and whether lignin formation proceeds via precise channeling of individual precursors through metabolons (temporary structural–functional complexes formed between sequential enzymes) are key questions of practical significance that remain to be answered.

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