Contractile roots are the most sensitive organ in <Emphasis Type="Italic">Crocus sativus</Emphasis> to salt stress |
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Authors: | S M Rajaei V Niknam S M Seyedi H Ebrahimzadeh K Razavi |
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Institution: | (1) Department of Plant Science, McGill University, Macdonald Campus, 21,111 Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada, H9X 3V9;(2) McGill School of Environment Montreal, 3534 University Street, Montreal, Quebec, Canada, H3A 2A7 |
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Abstract: | Crocus sativus corms were grown in Perlite and watered by half-strength modified Hoagland nutrient solution containing 0, 50, 100, 150, 200 mM NaCl. Growth parameters
and contents of proteins, proline, polyphenols, minerals and saccharides were studied in fibrous roots, contractile roots,
corms and leaves. All plants remained alive and did not display any sign of foliar damage even at 200 mM NaCl. However, the
salinity decreased growth, relative water content and increased contents of proline and Na+ in all organs. Total protein content was increased in corms and contractile roots but decreased in fibrous roots. Changes
in protein pattern were also observed. Polyphenol content was increased by salinity in all organs except the leaves. As salinity
increased, content of soluble saccharides decreased except in the contractile roots. |
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