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Plant Physiology 59:240-243 (1977)
© 1977 American Society of Plant Biologists

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Articles

Induction of Frost Hardiness in Stem Cortical Tissues of Cornus stolonifera Michx. by Water Stress

II. Biochemical Changes 1

Paul M. Chen2 and Paul H. Li

a Laboratory of Plant Hardiness, Department of Horticultural Science and L.A., University of Minnesota, St. Paul, Minnesota 55108

A decrease of protein, RNAs, and starch, and an increase of sugar were observed in 3-day water-stressed red osier dogwood plants (Cornus stolonifera Michx.) when the frost hardiness increased from –3 to –6 C. As the frost hardiness increased to –11 C after 7 days of treatment, the starch continuously decreased, however, the proteins and RNAs increased with a continuous increase of sugar. Further water stress treatment had little effect on the changes of these chemicals. Control plants in short days showed similar gradual biochemical changes in patterns. From the results of frost hardiness increases, the pattern of biochemical changes, and the mechanism of the increased freezing resistance, it appears that the water stress and short days accomplished essentially the same physiological end(s) in inducing frost hardiness in red-osier dogwood.

2 Present address: Department of Crop Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0.

1 Scientific Journal Series Article No. 9520 of the Minnesota Agricultural Experiment Station. This research was supported in part by a grant from The Northwest Area Foundation.




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D. T. Karlson, Y. Zeng, V. E. Stirm, R. J. Joly, and E. N. Ashworth
Photoperiodic Regulation of a 24-kD Dehydrin-Like Protein in Red-Osier Dogwood (Cornus sericea L.) in Relation to Freeze-Tolerance
Plant Cell Physiol., January 15, 2003; 44(1): 25 - 34.
[Abstract] [Full Text] [PDF]


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Copyright © 1977 by the American Society of Plant Biologists