Magnesium and manganese induced changes on chemical, nutritional, antioxidant and antimicrobial properties of the pansy and Viola edible flowers

de Oliveira, Izamara; Chrysargyris, Antonios; Finimundy, Tiane C.; Carocho, Márcio; Santos-Buelga, Celestino; Calhelha, Ricardo C.; Tzortzakis, Nikolaos; Barros, Lillian; Heleno, Sandrina A.

doi:10.1016/j.foodchem.2023.137976

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…Garden pansy (Viola × wittrockiana Gams., Violaceae) is one of the most popular bedding plant in temperate climates. Pansy flowers are edible and valuable for biologically active compounds (Zawadzińska and Salachna, 2014;de Oliveira et al, 2024). Unfortunately, pansies are sensitive to abiotic environmental stresses, including high soil salt concentrations (Villarino et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Enhancing Growth and Salinity Stress Tolerance of Pansy Using Hydrolyzed Gellan Gum – An Environmentally Friendly Plant Biostimulant

Salachna,

Piechocki,

Podsiadło

et al. 2024

J. Ecol. Eng.

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Biostimulants are a broad group of numerous compounds that stimulate plant growth and increase plant resistance to environmental stresses. Pansies are in great demand, so new sustainability strategies for their production are still being sought. This study evaluated the effectiveness of partially hydrolyzed gellan gum (HGG) as a natural biostimulant for the production of high-quality pansy plants. In Experiment 1, the effects of drench concentrations of HGG (0, 25, 50, and 100 mg•dm -3 ) on morphological and physiological parameters of two pansy cultivars were investigated. In Experiment 2, the objective of study was to determine the effect of HGG on growth, flowering and leaf physiology of pansy grown under increasing sodium chloride (NaCl) concentrations (50 and 200 mM). Our results showed in both cultivars growth-promoting effects of HGG, and 100 mg•dm -3 of HGG was the most effective concentration. The increasing salinity imposed as NaCl negatively affected the growth, flowering, visual appearance, relative chlorophyll content (SPAD), stomatal conductance, and chlorophyll fluorescence (Fv/Fm) of plants. However, HGG pretreatment alleviated the adverse effects of salt stress mainly by reducing the decrease of SPAD, Fv/Fm, flower number and biomass in salt-stressed plants at 200 mM NaCl. Overall results indicated that eco-friendly HGG at the proper dose could be used as a tool to enhance growth, flowering and salt stress tolerance in pansy plants.

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Section: Introductionmentioning

confidence: 99%

Enhancing Growth and Salinity Stress Tolerance of Pansy Using Hydrolyzed Gellan Gum – An Environmentally Friendly Plant Biostimulant

Salachna,

Piechocki,

Podsiadło

et al. 2024

J. Ecol. Eng.

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Residues from Medicinal and Aromatic Plants after Distillation Can Be Used in Replace Some Peat in the Growing Media for Viola × wittrockiana Production

Chrysargyris,

Tzortzakis

2024

Agronomy

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Plant residues derived from the agro-industrial sector and their disposal are still unsolved issues despite the various research and applications. The current study assessed the possible peat substitution in growing media with solid residues derived from the distillation of Origanum dubium Boiss (OD) and Sideritis cypria Post (SC) after essential oils production. Residues of OD and SC (0–5–10–20% v/v) and their mixture (OD + SC) were examined to partially substitute peat for the production of pansy (Viola × wittrockiana) plants. The presence of OD, SC, and OD + SC residues increased the pH, the electrical conductivity, the organic matter content, and the levels of minerals in the growing media mixtures compared to sole peat while decreasing the total porosity (up to 36.8%) and the available free air (up to 58.3%). The OD residues’ presence in the peat-based media revealed more detrimental effects than the SC, while the OD + SC mixture received intermediate effects. Low residue ratios (≤5% OD, ≤10% SC, ≤10% OD + SC) sustain plant growth and photosynthetic activity of plants, while higher ratios decrease plant growth, chlorophyll content and mineral accumulation due to inappropriate growing media properties, causing plant oxidative stress. This was verified using the increase in malondialdehyde (up to 4.5 times) and hydrogen peroxide (up to 2.1 times) content in plants and the activation of several non-enzymatic antioxidant processes, including total phenols, flavonoids, and antioxidant capacity of the plants. Therefore, OD, SC, and OD + SC at 5%, 10%, and 10%, respectively, can partially substitute peat, as they result in appropriate plant growth and development. However, the growing media’s properties must be improved to ensure adequate yields as well.

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Magnesium and manganese induced changes on chemical, nutritional, antioxidant and antimicrobial properties of the pansy and Viola edible flowers

Cited by 2 publications

References 30 publications

Enhancing Growth and Salinity Stress Tolerance of Pansy Using Hydrolyzed Gellan Gum – An Environmentally Friendly Plant Biostimulant

Enhancing Growth and Salinity Stress Tolerance of Pansy Using Hydrolyzed Gellan Gum – An Environmentally Friendly Plant Biostimulant

Residues from Medicinal and Aromatic Plants after Distillation Can Be Used in Replace Some Peat in the Growing Media for Viola × wittrockiana Production

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