title: Effect of water supply on growth and polyphenols of lemon balm (Melissa officinalis L.) and thyme (Thymus vulgaris L.).
abstract: A pot experiment was carried out with lemon balm (Melissa officinalis L.) and thyme (Thymus vulgaris L.). Different water supply was applied: 25%, 40% and 70% saturation of soil water capacity (SWC). Morphological traits, biomass and phenolic type active ingredients were investigated. Among the two species, main differences were registered in biomass and TPC. Lower SWC resulted in reduced biomass production of lemon balm, while the applied stress treatments did not effect the biomass of thyme. In lemon balm, highest TPC contents were measured in control plants both in shoots and roots but in thyme, the shoots showed a significantly increased TPC at the 25% SWC conditions. Neither the content of total flavonoids nor that of the rosmarinic acid was affected by the treatments. The antioxidant capacity proved to be in tight connection with the TPC in both species (r = 0.766-0.883). The rosmarinic acid content of lemon balm plants contributed to the antioxidant capacity, as well (r = 0.679-0.869).
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Éva
authors.initials: É
authors.lastname: Németh-Zámbori
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Zsuzsanna
authors.initials: Z
authors.lastname: Pluhár
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Krisztina
authors.initials: K
authors.lastname: Szabó
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Malekzadeh
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Péter
authors.initials: P
authors.lastname: Radácsi
authors.affiliation: Department of Medicinal and Aromatic Plants, Corvinus University of Budapest , Budapest , Hungary.
authors.forename: Katalin
authors.initials: K
authors.lastname: Inotai
authors.affiliation: Richter Gedeon Pharmaceutical Company , Budapest , Hungary.
authors.forename: Bonifác
authors.initials: B
authors.lastname: Komáromi
authors.affiliation: Institute of Natural Fibres and Medicinal Plants , Poznan , Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Seidler-Lozykowska
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D018533:Biomass; D002934:Cinnamates / Q000378:metabolism*; D053630:Depsides / Q000378:metabolism*; D005419:Flavonoids / Q000378:metabolism*; D031334:Melissa / Q000254:growth & development / Q000378:metabolism*; D059808:Polyphenols / Q000378:metabolism*; D046930:Thymus Plant / Q000254:growth & development / Q000378:metabolism*; D000097123:Rosmarinic Acid
chemical_list: D000975:Antioxidants; D002934:Cinnamates; D053630:Depsides; D005419:Flavonoids; D059808:Polyphenols; D000097123:Rosmarinic Acid
keywords: Water capacity; antioxidant activity; drought stress; polyphenols; rosmarinic acid