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Physiological and antioxidant responses of two accessions of Arabidopsis thaliana in different light and temperature conditions
Author(s) -
Szymańska Renata,
Nowicka Beatrycze,
Gabruk Michał,
Glińska Sława,
Michlewska Sylwia,
Dłużewska Jolanta,
Sawicka Anna,
Kruk Jerzy,
Laitinen Roosa
Publication year - 2015
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/ppl.12278
Subject(s) - arabidopsis , arabidopsis thaliana , biology , antioxidant , photosynthesis , botany , adaptation (eye) , plastoquinone , chlorophyll fluorescence , chlorophyll , cultivar , horticulture , gene , chloroplast , biochemistry , mutant , thylakoid , neuroscience
During their lifetime, plants need to adapt to a changing environment, including light and temperature. To understand how these factors influence plant growth, we investigated the physiological and antioxidant responses of two Arabidopsis accessions, Shahdara (Sha) from the Shahdara valley (Tajikistan, Central Asia) in a mountainous area and Lovvik‐5 (Lov‐5) from northern Sweden to different light and temperature conditions. These accessions originate from different latitudes and have different life strategies, both of which are known to be influenced by light and temperature. We showed that both accessions grew better in high‐light and at a lower temperature (16°C) than in low light and at 23°C. Interestingly, Sha had a lower chlorophyll content but more efficient non‐photochemical quenching than Lov‐5. Sha, also showed a higher expression of vitamin E biosynthetic genes. We did not observe any difference in the antioxidant prenyllipid level under these conditions. Our results suggest that the mechanisms that keep the plastoquinone (PQ)‐pool in more oxidized state could play a role in the adaptation of these accessions to their local climatic conditions.