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Sequential Response of Sage Antioxidant Metabolism to Chilling Treatment

A. Kalisz, A. Sękara, R. Pokluda, A. Jezdinský, J. Neugebauerová, KA. Slezák, E. Kunicki,

. 2019 ; 24 (22) : . [pub] 20191112

Jazyk angličtina Země Švýcarsko

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc20023492

Grantová podpora
7AMB16PL001 Ministry of Education, Youth and Sports of the Czech Republic
7AMB16PL001, statutory activity Ministry of Science and Higher Education of the Republic of Poland
CZ.02.1.01/0.0/0.0/l6_0l7/0002334 Research Infrastructure for Young Scientists, co-financed by the Operational Programme Research, Development and Education, Czech Republic

Chilling influences the growth and metabolism of plants. The physiological response and acclimatization of genotypes in relation to stress stimulus can be different. Two sage cultivars: 'Icterina' and 'Purpurascens' were subjected to 4 °C and 18 °C (control), and sampled between the 5th and 14th day of the treatment. Ascorbate peroxidase (APX) activity was up-regulated in chilled 'Purpurascens' on the 14th day, while guaiacol peroxidase (GPX) activity increased on the 10th and 12th day in relation to the control. GPX activity of the control 'Icterina' was frequently higher than chilled plants, and chilling did not affect APX activity of that cultivar. Catalase activity remained stable in both sage cultivars. Chilled 'Purpurascens' showed a significant increase in total phenolics contents on the 5th, 7th, and 12th day and in total antioxidant capacity on the 5th and 10th day as compared to the control for respective sampling days. Higher malondialdehyde content was found in chilled plants on the 12th, or 14th day, differences reached 26-28% of the controls. Chilling caused significant decrease in dry matter content. The stress response was more stable and effective in 'Icterina', while more dynamic changes were found for 'Purpurascens'. Based on our results, we propose to use 'Purpurascens' for targeted stress-induced studies and 'Icterina' for field applications.

Citace poskytuje Crossref.org

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