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Modification of stress tolerance by dehydration pretreatment in winter rape hypocotyls
Author(s) -
SHCHERBAKOVA ANNA,
KACPERSKAPALACZ ALINA
Publication year - 1980
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1980.tb03304.x
Subject(s) - dehydration , hypocotyl , chemistry , desiccation , water stress , botany , biology , biochemistry
Dehydration of isolated rape hypocotyls ( Brassica napus L. var. oleifera L. cv. Górczański) to a water saturation deficít of about 60% resulted in increased tolerance to subsequent desiccation and to prolonged immersion in water. Dehydration pretreatment followed by restoration of tissue turgidity, caused a decrease in leakage of electrolytes, ultraviolet‐absorbing materials and ninhydrin‐reactive substances from the desiccated or water immersed hypocotyl tissue. A hardening effect of tissue dehydration is supposed to be related to an improved stability of cell membranes.