Polyphenolic distribution in organs of <i>Argylia radiata</i>, an extremophile plant from Chilean Atacama desert

Morales-Tapia, Pablo; Cabrera‐Barjas, Gustavo; Giordano, Ady

doi:10.1080/14786419.2020.1739678

Cited by 7 publications

(8 citation statements)

References 24 publications

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“…It is known that methanol is a good solvent for polyphenol extraction. In a recent study carried out in Argylia plant organs [ 12 ], we determine that the highest TPC was found in the plant leaves (1520 mg GAE/100 g FW), followed by the flowers and roots (70 mg GAE/100 g FW). It is worth mentioning that those extracts were made using methanol as a solvent.…”

Section: Resultsmentioning

confidence: 99%

“…In [ 12 ], Morales-Tapia et al studied the FC of A. radiata plants growing in their harsh natural habitat and observed that the FC content was higher in red flowers (43.5–187.6 mg QE/100 g FW) and leaves (126.6 mg QE/100 g FW) but lower in root pulp and cork (5.7 and 1.1 and mg QE/100 g FW). Those results agree with the present work, considering that the whole root sample was used for extract preparation.…”

Section: Resultsmentioning

confidence: 99%

“…This flavonol glycoside has shown anti-inflammatory, antimicrobial and potent antioxidant activity as a scavenger of free radicals [ 31 ]. It is interesting to note that it was the most frequent metabolite found in wild A. radiata plants [ 12 ].…”

Section: Resultsmentioning

confidence: 99%

“…Our group recently studied polyphenolic distribution on A. radiata organs (flowers of different colors, leaves and roots). For the first time, ten polyphenolic compounds with antioxidant activity were reported [ 12 ]. Rutin was the principal compound identified in all organs, followed by quercetin and coumaric acid.…”

Section: Introductionmentioning

confidence: 99%

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Polyphenolic Composition and Antioxidant Activity (ORAC, EPR and Cellular) of Different Extracts of Argylia radiata Vitroplants and Natural Roots

et al. 2022

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Plant biochemistry studies have increased in recent years due to their potential to improve human health. Argylia radiata is an extremophile plant with an interesting polyphenolic profile. However, its biomass is scarce and occasionally available. Argylia in vitro biomass was obtained from tissue culture and compared with in vivo roots regarding its polyphenolic and flavonoid content. Different solvents were used to prepare extracts from the in vitro tissue of callus and aerial plant organs and in vivo roots. UPLC-MS/MS was used to assess the chemical composition of each extract. ORAC-FL and scavenging of free radicals (DPPH and OH) methods were used to determine the antioxidant capacity of extracts. Furthermore, the biological activity of the extracts was established using the cellular antioxidant activity method. The vitroplants were a good source of polyphenols (25–68 mg GAE/100 g tissue FW), and methanol was the most efficient solvent. Eight polyphenolic compounds were identified, and their antioxidant properties were investigated by different chemical methods with EPR demonstrating its specific scavenging activity against free radicals. All extracts showed cellular dose-dependent antioxidant activity. The methanolic extract of vitroplants showed the highest cellular antioxidant activity (44.6% and 51%) at 1 and 10 µg/mL of extract, respectively. Vitroplants of A. radiata are proposed as a biotechnological product as a source of antioxidant compounds with multiple applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polyphenolic Composition and Antioxidant Activity (ORAC, EPR and Cellular) of Different Extracts of Argylia radiata Vitroplants and Natural Roots

et al. 2022

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“…The chemical composition of plants can vary greatly in response to abiotic and biotic stress, such as soil salinity, temperature, humidity and nutrient deficiency, pathogen infection and herbivore attack [1,2] . In particular, plants biosynthesize a wide spectrum of secondary metabolites when they are injured by herbivores, including volatile compounds that consist predominantly of terpenes and widely known as allelochemicals [3,4] .…”

Section: Introductionmentioning

confidence: 99%

Terpenes of the Essential Oil from Ipomoea alba Leaf in Response to Herbivore and Mechanical Injuries

Almeida

Ramos

2022

j. of bot. res.

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There is no doubt that the chemical composition of plants, including norvolatile and volatile compounds, is widely affected by abiotic and biotic stress. Plants are able to biosynthesize a variety of secondary metabolites against actions of natural enemies, such as herbivores, fungus, virus and bacteria. The present study revealed that the chemical compositions of leaf essential oils from Ipomoea alba underwent quantitative and qualitative alterations both when infested with the grasshopper Elaeochlora trilineata and mechanically damaged. Grasshopper attack and mechanical wounding induced the biosynthesis of nine volatile compounds in leaves of I. alba: cumene, α-ylangene, β-panasinsene, β-gurjunene aromadendrene, β-funebrene, spirolepechinene, cubenol and sclareolide. The amount of germacrene D (33.2% to 20.4%) decreased when the leaves were mechanically damaged; but when the leaves were attacked by a grasshopper, the germacrene D increased from 33.2% to 39.4%. The results showed that I. alba leaves clearly responded to abiotic and biotic stress and contribute to an understanding of plant responses to stress conditions.

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Physiological, transcriptomic and metabolomic insights of three extremophyte woody species living in the multi-stress environment of the Atacama Desert

Gajardo,

Morales,

Larama

et al. 2024

Planta

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Polyphenolic distribution in organs of Argylia radiata, an extremophile plant from Chilean Atacama desert

Cited by 7 publications

References 24 publications

Polyphenolic Composition and Antioxidant Activity (ORAC, EPR and Cellular) of Different Extracts of Argylia radiata Vitroplants and Natural Roots

Polyphenolic Composition and Antioxidant Activity (ORAC, EPR and Cellular) of Different Extracts of Argylia radiata Vitroplants and Natural Roots

Terpenes of the Essential Oil from Ipomoea alba Leaf in Response to Herbivore and Mechanical Injuries

Physiological, transcriptomic and metabolomic insights of three extremophyte woody species living in the multi-stress environment of the Atacama Desert

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