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http://dx.doi.org/10.5423/RPD.2010.16.1.081

Effects of Acid Treatments on Chlorophyll, Carotenoid and Anthocyanin Contents in Arabidopsis  

Im, Kyung-Hoan (Department of Biology, University of Incheon)
Publication Information
Research in Plant Disease / v.16, no.1, 2010 , pp. 81-85 More about this Journal
Abstract
Arabidopsis seedlings subjected to low pH stress in the range of pH 5.6-4.0 did not show significant retardations in root and shoot growths. Treatment of pH 3.5-2.5 resulted in significant reductions in root and shoot length, especially in roots. Chlorophyll contents in seedlings increased during acid treatment of pH 5.6-4.0, but decreased by stronger acid treatment of pH 4.0 and lower pHs. Total carotenoid contents showed similar trend to chlorophyll contents by increasing during pH 5.6-3.5 treatments and decreasing by pH 3.0-2.5. Anthocyanin contents increased under acid stress of pH 5.6-3.0 and showed great reduction at pH 2.5. The ratios of carotenoids/chlorophylls and anthocyanins/chlorophylls increased by acid stress treatments. That indicates plants try to adjust physiologically to acid stress and protect chlorophylls by increasing carotenoid and anthocyanin contents. However, different responses of chlorophylls and anthocyanins to acid stress indicate both pigments play different roles in protecting plant from acid stress.
Keywords
Acid treatment; Anthocyanins; Arabidopsis; Carotenoids; Chlorophylls;
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Times Cited By KSCI : 2  (Citation Analysis)
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