Effects of NaCl on photosynthetic pigments, saccharides, and chloroplast ultrastructure in leaves of tomato cultivars |
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Authors: | R.A. Khavari-Nejad Y. Mostofi |
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Affiliation: | (1) Department of Biology, University for Teachers Education, 49 Mobarezan (Roosevelt) Avenue, Tehran, 15, Iran |
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Abstract: | In leaves of four tomato (Lycopersicon esculentum Mill.) cultivars (Red Cloud, Floradade, Peto 95, and Scorpio) the contents of chlorophyll (Chl) (a+b), Chl a, and -carotene decreased due to 100 mM NaCl treatment as compared with those of controls. The contents of soluble sugars and total saccharides were significantly increased in leaves of NaCl-treated plants, but the starch content was not significantly affected. Transmission electron microscopy indicated that in leaves of NaCl-treated plants, the chloroplasts were aggregated, the cell membranes were distorted and wrinkled, and there was no sign of grana and thylakoid structures in chloroplasts. |
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Keywords: | /content/n84q85177231847q/xxlarge946.gif" alt=" beta" align=" MIDDLE" BORDER=" 0" >-carotene chlorophyll grana Lycopersicon esculentum saccharides soluble sugars starch thylakoids |
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