Article (Scientific journals)
Exogenous Application of Hydrogen Peroxide, Hydrogen Sulfide, and Potassium Phosphite Enhances Rosmarinic Acid Accumulation and Modulates Key Biosynthetic Gene Expression in Melissa officinalis L.
Abdi, Nahid; Ahmadi, Nima; Pakdin-Parizi, Ali et al.
2025In Biocatalysis and Agricultural Biotechnology, p. 103754
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Keywords :
Secondary metabolites; elicitor
Abstract :
[en] Melissa officinalis L. (lemon balm) is a well-known medicinal plant traditionally valued 16 for its pharmacological properties. Its aerial parts are rich in bioactive compounds such as 17 rosmarinic acid (RA), which play key roles in the plant defense system and contribute to 18 its antispasmodic, sedative, and memory-enhancing activities. However, the natural 19 concentrations of these secondary metabolites are typically low in medicinal plants. This 20 study investigated the influence of exogenous elicitors, hydrogen peroxide (HP, 5 and 10 21 mM), hydrogen sulfide (HS, 0.25 and 0.5 mM), and potassium phosphite (PP, 0.5 and 1 22 g/L) on the accumulation of photosynthetic pigments, antioxidant enzyme activity, 23 phenolic content, RA production, and the expression of RA biosynthesis-related genes. All 24 elicitors significantly increased chlorophyll a, b, and carotenoid levels. Treatment with HP 25 and HS notably elevated total phenolic and flavonoid contents. The activity of CAT and 26 APX enzymes varied depending on the elicitor type and concentration applied. Elicitation 27 enhanced RA accumulation by enhancing PAL activity and modulating the expression of 28 key biosynthetic genes (PAL, 4CL, TAT, and HPPR). HS treatment upregulated genes in 29 both phenylalanine and tyrosine pathways, whereas HP was more effective in stimulating 30 the tyrosine pathway. PP elicitation led to differential gene expression depending on its 31 concentration. These results demonstrate that HP, HS, and PP can modulate key metabolic 32 and signaling pathways, thereby boosting RA production and potentially enhancing the 33 medicinal value of M. officinalis in a safe and environmentally friendly manner.
Disciplines :
Chemistry
Agriculture & agronomy
Author, co-author :
Abdi, Nahid 
Ahmadi, Nima
Pakdin-Parizi, Ali 
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Département GxABT > Chemistry for Sustainable Food and Environmental Systems (CSFES)
Language :
English
Title :
Exogenous Application of Hydrogen Peroxide, Hydrogen Sulfide, and Potassium Phosphite Enhances Rosmarinic Acid Accumulation and Modulates Key Biosynthetic Gene Expression in Melissa officinalis L.
Publication date :
August 2025
Journal title :
Biocatalysis and Agricultural Biotechnology
eISSN :
1878-8181
Publisher :
Elsevier
Pages :
103754
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Tarbiat Modares University
Funding text :
This work was supported by Ph.D. Student Grant Program by Tarbiat Modares University (TMU), Tehran, and Genetics and Agricultural Biotechnology Institute of Tabarestan (GABIT), Sari, Iran.
Available on ORBi :
since 31 August 2025

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