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Exogenous application of abscisic acid or triadimefon affects the recovery of Zea mays seedlings from heat shock
Author(s) -
BonhamSmith P. C.,
Kapoor M.,
Bewley J. D.
Publication year - 1988
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.1399-3054.1988.tb09188.x
Subject(s) - triadimefon , abscisic acid , zea mays , poaceae , biology , fungicide , shoot , shock (circulatory) , horticulture , botany , agronomy , biochemistry , medicine , gene
Maize seedlings ( Zea mays L. cv. DK 246) grown for 1–4 days in the presence of abscisic acid (ABA) or triadimefon (a fungicide) demonstrated an enhanced ability to withstand the effects of a 3‐h sub‐lethal (40°C) or lethal (45°C) heat shock. Both the ABA and triadimefon treatments were applied solely to the roots of seedlings; however, the ability to withstand a heat shock was induced in both the root and the shoot. The level of protection provided by these agents was dependent upon the time that plants were exposed to them; prolonged exposure reduced tolerance to subsequent stress.