Photosystem 2-activity and thylakoid membrane polypeptides of <Emphasis Type="Italic">in vitro</Emphasis> cultured chrysanthemum as affected by NaCl |
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| Authors: | D M Pandey I Choi U-D Yeo |
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| Institution: | (1) Faculty of Biological Science, Chonbuk National University, Jeonju, 561-756, South Korea;(2) Jeollabukdo Agricultural Research and Extension Services, Iksan, 570-704, South Korea;(3) Present address: Department of Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835 215 Jharkhand, India |
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| Abstract: | Long-term (30 d) effects of 100, 200, 300, and 400 mM NaCl on photosystem 2 (PS 2)-mediated electron transport activity and
content of D1 protein in the thylakoid membranes of chrysanthemum (Dendranthema grandiflorum) cultured in vitro at low irradiance 20 μmol(photon) m−2 s−1 were investigated. 100 mM NaCl increased contents of chlorophylls (Chl) a and b, carotenoids (Car; xanthophylls + carotenes), and the ratio of Chl a/b, and Car/Chl a+b. However, further increase in NaCl concentration led to the significant reduction in the contents of Chl a, and Chl b, and increase in the ratio of Chl a/b and Car/Chl a+b. NaCl treatment decreased the PS 2-mediated electron transport activity and contents of various thylakoid membrane polypeptides
including D1 protein. |
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| Keywords: | Additional" target="_blank">Additional Dendranthema grandiflorum D1 protein electron transport rate low irradiance salt stress |
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