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.
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| Additional Information: | This work was supported by the Croatian Science Foundation (project no. IP-2014-09-4359), the Czech Science Foundation Grant (grant No. 18-07563S), and the European Regional Development Fund-Project "Plants as a tool for sustainable global development" (No. CZ.02.1.01/0.0/0.0/16_019/0000827). PhD abroad practice in phenolic acids analysis for I.L. was enabled by the Erasmus+ Programme. | ||||||||
| Uncontrolled Keywords: | Brassica crops ; carotenoids ; glucosinolates ; polyphenols ; salinity stress ; seedlings ; phenolic acids ; tolerance | ||||||||
| Subjects: | NATURAL SCIENCES NATURAL SCIENCES > Biology NATURAL SCIENCES > Biology > Botany |
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| Divisions: | Division of Molecular Biology | ||||||||
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| Depositing User: | Branka Salopek Sondi | ||||||||
| Date Deposited: | 19 Nov 2019 14:20 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/5088 | ||||||||
| DOI: | 10.3390/plants8060155 |
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