Dehydrin and proline content in Brassica napus and B. carinata under cold stress at two irradiances |
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Authors: | M Klíma P Vítámvás S Zelenková M Vyvadilová I T Prášil |
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Institution: | 1. Crop Research Institute, Drnovská 507, CZ-16106, Prague, Czech Republic 2. Faculty of Science, Charles University, Vini?ná 5, CZ-12844, Praque, Czech Republic
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Abstract: | The accumulation of cold-induced dehydrin and proline was related to the frost tolerance (FT) in several Brassica species or cultivars. A dehydrin of molecular mass 47 kDa was detected in the leaves of an Ethiopian mustard (B. carinata) and a pair of dehydrins of similar molecular mass in the three (two winter, one spring) oilseed rape (B. napus) cultivars, when plants were maintained at 4 °C for one-month under two different irradiances. More dehydrin was accumulated
in oilseed rape than in Ethiopian mustard under the high irradiance. A significant correlation was observed between leaf dehydrin
content and FT, and no relationship between proline content and FT or between the proline and dehydrin contents. Protoplast-derived
callus cells behaved differently from leaves sampled from intact plants, as they did not accumulate dehydrin and proline in
response to cold stress. |
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Keywords: | |
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