ArticleBMC plant biology2025
Phytochemical, physiological and morphological response of industrial-medicinal plant Melissa officinalis L. to drought stress, nanosilicon and superabsorbent polymer application.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Melatonin enhances drought tolerance in lemongrass: physiological, biochemical, and antioxidant mechanisms.Scientific reports · 2026Article
- Pseudomonas fluorescens improves morph-physiological characteristics, essential oil compounds, and gene expression implicated in menthol biosynthesis under water stress conditions in peppermint.Antonie van Leeuwenhoek · 2026Article
- Mycorrhizal colonization enhances the growth and physiological traits of Melissa officinalis under drought stress and Fusarium culmorum infection.BMC plant biology · 2026Article
- Effects of a Hydrogel Polymer on the Physiology and Antioxidant Activity of Naturally Colored Cotton Cultivars Under Water Deficit.Plants (Basel, Switzerland) · 2026Article
- Nano-silicon enhances drought tolerance, yield stability, and bio-active compounds in Lallemantia iberica under water deficit conditions.Scientific reports · 2026Article
- Metabolic activities, biochemical, and physiological processes in Mentha pulegium L. induced by drought stress and application of 5-aminolevulinic acidf.BMC plant biology · 2025Article
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Abstract
Lemon balm (Melissa officinalis) is a vital industrial and medicinal plant widely utilized in pharmaceutical, food, and cosmetic industries due to its rich bioactive metabolites, including terpenoids and phenolic compounds, as well as its diverse therapeutic properties. This study examined the effects of silicon nanoparticles (Si-NPs; 300 mg/L foliar spray), superabsorbent polymer (SAP; 1 g/kg soil), and drought stress (75% field capacity) on the phytochemical, physiological, and growth parameters of lemon balm under greenhouse conditions. Conducted over 2023-2024 at Arak University's medicinal plants department, the experiment followed a randomized complete block design with eight treatments and three replicates. Drought stress significantly reduced chlorophyll *a* (0.74 mg/gFW) and total chlorophyll content (1.00 mg/gFW), while Si-NPs and SAP mitigated these effects by enhancing chlorophyll levels, stem height, and diameter while reducing electrolyte leakage and proline accumulation. Conversely, drought stress elevated electrolyte leakage (32.45%) and proline (1.26 µmol/gFW). The combined Si-NP and SAP treatment yielded the highest flavonoid concentrations (6.76 mg QE/g DW) and antioxidant activity (59.37%). Notably, Si-NPs and SAP alleviated drought-induced morphological and physiological impairments. Essential oil content peaked (0.29%) under drought stress, with geranial and neral identified as primary constituents. The control and SAP treatments produced the highest geranial content (51.53%), whereas SAP alone maximized neral (34.95%). Si-NPs elevated linalool acetate (5.71%), and drought stress increased isopulegol (11.16%). These findings demonstrate the efficacy of Si-NPs and SAP in enhancing lemon balm's drought tolerance and phytochemical yield.
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