Changes in Tomato Leaves Induced by NaCl Stress: Leaf Organization and Cell Ultrastructure
2003
Sam, O. | Ramírez, C. | Coronado, M.J. | Testillano, P.S. | Risueño, M.C.
The alterations of organization of leaf tissues and cell ultrastructure as a consequence of salt stress (75 and 150 mM NaCl) were studied in two tomato (Lycopersicum esculentum Mill.) cultivars showing different salinity tolerance. The salinity brought changes in cell shape, volume of intercellular spaces and chloroplast number, shape and size. These characteristics were specific in each cultivar. The ultrastructural changes were also different in the two tomato cultivars studied and the most important ones were in the number and size of starch granules in chloroplasts, the number of electron-dense corpuscules in the cytoplasm, the structure of mitochondria, and number of plastoglobuli.
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