Document Detail

Chilling tolerance of maize, cucumber and rice seedling leaves and roots are differentially affected by salicylic acid.
MedLine Citation:
PMID:  12121463     Owner:  NLM     Status:  Publisher    
Salicylic acid (SA) is one component of a complex signalling pathway that is induced by a number of biotic and abiotic stresses. Exposing seedling radicles to aqueous solutions of 0.5 mM salicylic acid for 24 h before chilling at 2.5 degrees C for 1-4 days reduced the chilling-induced increase in electrolyte leakage from maize and rice leaves, and cucumber hypocotyls, but not from their radicles. The SA treatments that induced chilling tolerance in the aerial portion of the seedlings did not induce chilling tolerance in the radicles, even though the SA treatments were applied to the radicles. A comparison of activity among five antioxidant enzymes showed that SA did not alter enzyme activities in the radicles, but that chilling tolerance induced by SA in the aerial portions of maize and cucumber plants was associated with an increase in the activity of glutathione reductase and guaiacol peroxidase.
Ho-Min Kang; Mikal E Saltveit
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Publication Detail:
Journal Detail:
Title:  Physiologia plantarum     Volume:  115     ISSN:  1399-3054     ISO Abbreviation:  Physiol Plant     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-Jul-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1256322     Medline TA:  Physiol Plant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  571-576     Citation Subset:  -    
Mann Laboratory, Department of Vegetable Crops, University of California, One Shields Ave., Davis, CA 95616-8631, USA.
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