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Involvement of phenolic acids in short-term adaptation to salinity stress is species specific among Brassicaceae

Linić, Ida; Šamec, Dunja; Grúz, Jiří; Vujčić Bok, Valerija; Strnad, Miroslav; Salopek-Sondi, Branka (2019) Involvement of phenolic acids in short-term adaptation to salinity stress is species specific among Brassicaceae. Plants, 8 . ISSN 2223-7747

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Abstract

Salinity is a major abiotic stress negatively affecting plant growth and consequently crop production. The effects of short-term salt stress was evaluated on seedlings of three globally important Brassica crops - Chinese cabbage (Brassica rapa ssp. pekinensis), white cabbage (B. oleracea var. capitata) and kale (B. oleracea var. acephala) with particular focus on phenolic acids. The physiological and biochemical stress parameters in the seedlings, level of three main groups of metabolites (total glucosinolates, carotenoids and phenolics) and individual phenolic acids were determined. The salt treatments caused a dose dependent reduction in root growth and biomass, and the increase in stress parameters (Na+/K+ ratio, ROS and GSH) in all seedlings but most prominently in Chinese cabbage. Based on PCA specific metabolites grouped close to the more tolerant species, white cabbage and kale. The highest level of phenolic acids, particularly hydroxycinnamic acids, was in the more tolerant kale and white cabbage. Reduction in caffeic, salicylic and 4-coumaric acid was in Chinese cabbage and kale and increase in ferulic acid level in kale on salinity treatments. Phenolic acids are species specific among Brassicaceae and some may participate in stress tolerance. Salt-tolerant varieties have higher levels of some phenolic acids and suffer less from metabolic stress disorders on salinity stress.

Item Type: Article
Uncontrolled Keywords: brassica crops ; carotenoids ; glucosinolates ; polyphenols ; salinity stress ; seedlings ; phenolic acids ; tolerance
Subjects: NATURAL SCIENCES > Biology
Divisions: Division of Molecular Biology
Projects:
Project titleProject leaderProject codeProject type
Fithormoni u abiotskom stresu kupusnjača: mehanizam tolerancije i primjena -PhytoBraCroBranka Salopek SondiIP-2014-09-4359HRZZ
Depositing User: Branka Salopek Sondi
Date Deposited: 01 Jul 2019 15:14
Last Modified: 01 Jul 2019 15:14
URI: http://fulir.irb.hr/id/eprint/4610
DOI: 10.3390/plants8060155

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