Allelopathic Potential of Quinoa (Chenopodium Quinoa Willd.) Genotypes on the Germination and Initial Development of Some Weeds and Crops

El-Sadek, Ashraf; Balah, Mohamed A.; Romani, Annalisa; Ieri, Francesca; Vignolini, Pamela; Salem, Emad; Moselhy, Naem; Virtuosi, Ivan

doi:10.21608/ejdr.2017.5843

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…However, the aglycone structure could not be exactly identified. A phytoecdysteroid was found in the bladders, which has been reported in seeds and the whole plant of quinoa before (El-Sadek et al, 2017;Graf et al, 2014;N. Zhu et al, 2001).…”

Section: The Metabolic and Lipid Profile Of Quinoa Bladdersmentioning

confidence: 72%

“…Quercetin and kaempferol are common flavonols in quinoa and have been reported before in seed and leaf samples. The presence of either rhamnetin and isorhamnetin seems to depend on the quinoa accession (El‐Sadek et al, 2017; Gómez‐Caravaca et al, 2012; Paśko et al, 2008; Stikić et al, 2020). The two betacyanins betanin and amaranthin presumably provide the visible rose/pink colour in the EBCs.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of epidermal bladder cells in Chenopodium quinoa

Otterbach

Khoury

Rupasinghe

et al. 2021

Plant Cell & Environment

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Chenopodium quinoa (quinoa) is considered a superfood, as it has favourable nutrient composition and is gluten free. Quinoa has high tolerance to several abiotic stresses, i.e. salinity, water deficit (drought) and cold. The tolerance mechanisms are yet to be elucidated. Quinoa has Epidermal Bladder Cells (EBCs) that densely cover the shoot surface, particularly the younger parts of the plant. Here, we report on the EBC's primary and secondary metabolomes, as well as the lipidome in response to abiotic stresses. EBCs were isolated from plants after cold, heat, high-light, water deficit and salt treatments. We used untargeted Gas Chromatography-Mass Spectrometry (GC-MS) to analyse metabolites and untargeted and targeted Liquid Chromatography-MS (LC-MS) for lipids and secondary metabolite analyses. We identified 64 primary metabolites, including sugars, organic acids and amino acids, 19 secondary metabolites, including phenolic compounds, betanin and saponins and 240 lipids categorized in five groups including glycerolipids and phospholipids. Although we found only few changes in the metabolic composition of bladders in response to abiotic stresses, metabolites related with heat, cold and high-light treatments, but not salt stress, were changed significantly. Na + concentrations were low in EBCs with all treatments, and approximately two orders of magnitude lower than K + concentrations.

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Section: The Metabolic and Lipid Profile Of Quinoa Bladdersmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Characterization of epidermal bladder cells in Chenopodium quinoa

Otterbach

Khoury

Rupasinghe

et al. 2021

Plant Cell & Environment

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show abstract

“…Asparagus dumosus extract containing PEs displays antifungal and antibacterial properties [ 186 ]. Chenopodium quinoa contains biologically active PEs that have allelopathic potential and suppress germination, growth, and development of weeds and crops [ 187 ]. Additionally, quinoa seeds contain many PEs, even more than spinach, with anti-diabetic properties.…”

Section: Role Of Phytoecdysteroids In Allelopathymentioning

confidence: 99%

Phytoecdysteroids: Distribution, Structural Diversity, Biosynthesis, Activity, and Crosstalk with Phytohormones

Arif

Singh

Bajguz

et al. 2022

IJMS

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Phytoecdysteroids (PEs) are naturally occurring polyhydroxylated compounds with a structure similar to that of insect molting hormone and the plant hormone brassinosteroids. PEs have a four-ringed skeleton composed of 27, 28, 29, or 30 carbon atoms (derived from plant sterols). The carbon skeleton of ecdysteroid is known as cyclopentanoperhydrophenanthrene and has a β-sidechain on C-17. Plants produce PEs via the mevalonate pathway with the help of the precursor acetyl-CoA. PEs are found in algae, fungi, ferns, gymnosperms, and angiosperms; more than 500 different PEs are found in over 100 terrestrial plants. 20-hydroxyecdysone is the most common PE. PEs exhibit versatile biological roles in plants, invertebrates, and mammals. These compounds contribute to mitigating biotic and abiotic stresses. In plants, PEs play a potent role in enhancing tolerance against insects and nematodes via their allelochemical activity, which increases plant biological and metabolic responses. PEs promote enzymatic and non-enzymatic antioxidant defense systems, which decrease reactive oxygen species in the form of superoxide radicals and hydroxyl radicals and reduce malondialdehyde content. PEs also induce protein biosynthesis and modulate carbohydrate and lipid synthesis. In humans, PEs display biological, pharmacological, and medicinal properties, such as anti-diabetic, antioxidant, anti-microbial, hepatoprotective, hypoglycemic, anti-cancer, anti-inflammatory, antidepressant, and tissue differentiation activity.

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Ecological Management of Weeds in Desert Regions

Balah

2021

Springer Water

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Allelopathic Potential of Quinoa (Chenopodium Quinoa Willd.) Genotypes on the Germination and Initial Development of Some Weeds and Crops

Cited by 7 publications

References 25 publications

Characterization of epidermal bladder cells in Chenopodium quinoa

Characterization of epidermal bladder cells in Chenopodium quinoa

Phytoecdysteroids: Distribution, Structural Diversity, Biosynthesis, Activity, and Crosstalk with Phytohormones

Ecological Management of Weeds in Desert Regions

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