Morphological, phytochemical, and essential oil changes induced by different nitrogen supply forms and salinity stress in Echinacea purpurea L.

Ahmadi, Firoozeh; Samadi, Abbas; Sepehr, Ebrahim; Rahimi, Amir; Shabala, Sergey

doi:10.1016/j.bcab.2022.102396

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…This also correlated well (0.68) with polyphenol concentrations. Similar behavior has been reported for other plant species such as Cynara scolymus L. [ 49 ], and Verbena officinallis L. [ 50 ]. A concentration of 100 mM NaCl combined with the use of Ascophyllum nodosum led to an increased flavonoid concentration in Vigna radiata L. [ 51 ], while 150 mM had the same stimulating effect for Trigonella foenum-graecum L. [ 52 ], confirming the results presented in this study.…”

Section: Discussionsupporting

confidence: 85%

Salinity Stress Influences the Main Biochemical Parameters of Nepeta racemosa Lam.

Lungoci

Motrescu

Filipov

et al. 2023

Plants

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In this work, the effects of salt stress on Nepeta racemosa Lam. were studied to analyze the possibility of using it as a potential culture for salinity-affected soils. A total of nine concentrations of salts—NaCl (18, 39, and 60 mg/100 g soil), Na2SO4 (50, 85, and 120 mg/100 g soil), and a mixture (9 g NaCl + 25 g Na2SO4, 19 g NaCl + 43 g Na2SO4, and 30 g NaCl + 60 g Na2SO4/100 g soil)—simulated real salinity conditions. Environmental electron microscopy offered information about the size and distribution of glandular trichomes, which are very important structures that contain bioactive compounds. The chlorophyll pigments, polyphenols, flavonoids, and antioxidant activity were determined based on spectrophotometric protocols. The results have shown a different impact of salinity depending on the salt type, with an increase in bioactive compound concentrations in some cases. The highest polyphenol concentrations were obtained for Na2SO4 variants (47.05 and 46.48 mg GA/g dw for the highest salt concentration in the first and second year, respectively), while the highest flavonoid content was found for the salt mixtures (42.77 and 39.89 mg QE/g dw for the highest concentrations of salt in the first and, respectively, the second year), approximately 100% higher than control. From the Pearson analysis, strong correlations were found between chlorophyll pigments (up to 0.93), antioxidant activity and yield for the first harvest (up to 0.38), and antioxidant activity and flavonoid content for the second harvest (up to 0.95). The results indicate the possibility of growing the studied plants in salt-stress soils, obtaining higher concentrations of bioactive compounds.

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Section: Discussionsupporting

confidence: 85%

Salinity Stress Influences the Main Biochemical Parameters of Nepeta racemosa Lam.

Lungoci

Motrescu

Filipov

et al. 2023

Plants

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“…Chemical synthesis of bioactive phytochemicals is a challenging process due to the complex composition of the compounds and the high price of chemicals [9]. On the other hand, field cultivation is affected by ecotype, season, harvest date, soil fertility, water quality, and takes a long time, as well as the lack of standardization of the medicinal crop [10,11]. The phytochemical constituents of echinacea fluctuate quantitatively and qualitatively during the growing season and growth cycle [12,13].…”

Section: Introductionmentioning

confidence: 99%

Improving the Production of Total Phenolics and Flavonoids and the Antioxidant Capacity of Echinacea purpurea Callus through Biotic Elicitation

et al. 2022

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Echinacea (Echinacea purpurea L. Moench) is one of the most important medicinal plants worldwide with various pharmacological properties. In the current study, a biotic elicitation strategy using the fungal elicitors yeast extract (YE), Aspergillus niger and Fusarium oxysporum was employed to improve the productivity of callus biomass, total phenolics and total flavonoids in E. purpurea leaf-derived callus. Significant differences were recorded between biotic elicitors concerning callus production, total phenolics and flavonoids accumulation, DPPH scavenging activity, and antioxidant enzymes activity. Callus biomass, growth index, and relative growth rate were significantly enhanced in the elicited cultures. The highest content of total phenolics was recorded with 4 g/l YE, 1 g/l A. niger or 0.25 g/l F. oxysporum. However, 0.25 g/l of F. oxysporum was superior in enhancing the productivity of total phenolics, and the content and productivity of total flavonoids, representing 310.60%, 361.40%, and 649.50% increase of control, respectively. In general, callus extracts exhibited 79.02 -89.51% scavenging activity of DPPH comparing with ascorbic acid (97.91%). YE at 4 g/l recorded the highest activity of catalase (CAT) and peroxidase (POD) enzymes. However, adding A. niger or F. oxysporum have a superior effect on polyphenol oxidase (PPO) activity. The current study revealed the possibility of using callus cultures and biotic elicitation as a promising tool for the in vitro production of phenols and flavonoids phytoconstituents with high antioxidant capacity from the high-value medicinal plant E. purpurea.

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“…2021]. One of the most critical properties of purple coneflower is to increase the immune system's strength against pathogens [Ahmadi et al 2022]. Echinacea purpurea contains medicinally vital components, including polysaccharides, flavonoids, caffeic acid derivatives, volatile oils, alkylamides, polyacetylenes, and other chemicals [Cozzolino et al 2006].…”

mentioning

confidence: 99%

“…Germacrene D, spathulenol, β-caryophyllene, and α-humulene were detected as the main constituents in the volatile oil extracted from purple coneflower [Mehrpooya et al. 2021].Results of some studies indicated that E. purpurea can be a tolerant plant to a range of environmental stresses such as water deficit and salinity [Darvizheh et al 2019, Ahmadi et al 2022]. Water shortage is a critical factor limiting crop production in arid and semi-arid zones [Ghasemi Pirbalouti et al 2014].…”

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confidence: 99%

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Foliar application of salicylic acid and proline to mitigate water deficit impact on purple coneflower (Echinacea purpurea (L.) Moench.)

Danesh-Shahraki,

Ghasemi Pirbalouti,

Rajabzadeh

et al. 2023

Acta Sci. Pol. Hortorum Cultus

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The effects of foliar spraying of salicylic acid and proline on Echinacea purpurea under different soil moistures were investigated in the field conditions in the Southwest of Iran (2017–2019). The experiment treatments were the foliar application of salicylic acid (SA) and proline (both at 1 mM concentration) and 2 irrigation frequencies (6 and 10 every day based on 75–80% and 40–45% field capacity, respectively). The field experiment was set as a complete randomized block design with 3 replications. The volatile oils were analyzed using GC-FID and GC-MS. Germacrene D, p-cymene, β-caryophyllene, α-pinene, and β-bisabolene were detected as the main constituents. Deficit irrigation decreased the growth parameters of the plants; however, it improved the contents of the volatile oil and the major compounds of volatile oil. In addition, the maximum values of the volatile oil content and the main constituents of volatile oil were extracted from the plants under SA × water deficit treatment. In conclusion, the foliar spraying of SA under water deficit conditions was an applicable strategy to maintain and stabilize the growth and yield of E. purpurea.

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Morphological, phytochemical, and essential oil changes induced by different nitrogen supply forms and salinity stress in Echinacea purpurea L.

Cited by 7 publications

References 20 publications

Salinity Stress Influences the Main Biochemical Parameters of Nepeta racemosa Lam.

Salinity Stress Influences the Main Biochemical Parameters of Nepeta racemosa Lam.

Improving the Production of Total Phenolics and Flavonoids and the Antioxidant Capacity of Echinacea purpurea Callus through Biotic Elicitation

Foliar application of salicylic acid and proline to mitigate water deficit impact on purple coneflower (Echinacea purpurea (L.) Moench.)

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