Naslov
Accumulation of Stinging Nettle Polyphenols as a Response to Drought Stress
(Accumulation of stinging nettle polyphenols as a response to drought stress)

Autori
Dujmović, Mia ; Opačić, Nevena ; Radman, Sanja ; Fabek Uher, Sanja ; Voća, Sandra ; Šic Žlabur, Jana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts: 58th Croatian & 18th International Symposium on Agriculture / Carović-Stanko, Klaudija ; Širić, Ivan - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2023, 99-99

Skup
58th Croatian & 18th International Symposium on Agriculture

Mjesto i datum
Dubrovnik, Hrvatska, 11.02.2023. - 17.02.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Abiotic Stress, Drought Stress, Ebb and Flow Hydroponic System, Phenolic Compounds, Antioxidant Capacity
(abiotic stress, drought stress, ebb and flow hydroponic system, phenolic compounds, antioxidant capacity)

Sažetak
The hydroponic ebb and flow system is a modern technique most commonly used for growing leafy vegetables. It involves periodic flooding and draining of the nutrient solution, which allows controlled drought stress. Abiotic stress can positively affect the accumulation of plant polyphenols with high antioxidant activity. Stinging nettle is a perennial wild plant that can be consumed as a green leafy vegetable due to its nutritional value. The aim of this research was to determine the content of total phenolics (TP), flavonoids (TF), non-flavonoids (TNF) and antioxidant capacity of stinging nettle leaves grown in ebb and flow system under different irrigation intervals. The experiment was conducted in a greenhouse during the spring growing season. Plants were treated with a nutrient solution for one hour and then exposed to three different drought intervals of 24, 48, and 96 hours. During the irrigation interval of 48 hours, plants accumulated the highest amounts of TP (400.21 mg GAE/100 g), about 23% more than when plants received no nutrient solution for 24 hours, and even about 30% more than when the plants were not irrigated for 96 hours. Also, the values of antioxidant capacity were highest during the 48-hour irrigation interval. The obtained results suggest that stinging nettle accumulates the most phenolic compounds during the 48 hour stress caused by the absence of nutrient solution.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija), Biotehnologija

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