This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (82) Citing Articles via Google Scholar Google Scholar Articles by Fuchigami, L. H. Articles by Evert, D. R. Search for Related Content PubMed PubMed Citation Articles by Fuchigami, L. H. Articles by Evert, D. R. Agricola Articles by Fuchigami, L. H. Articles by Evert, D. R.

Articles

Induction of Cold Acclimation in Cornus stolonifera Michx. ^1,2

^a Laboratory of Plant Hardiness, Department of Horticultural Science, University of Minnesota, St. Paul, Minnesota 55101

A warm (20 to 15 Celsius day or night) preconditioning treatment enhanced cold acclimation of Cornus stolonifera bark under short-day conditions when plants were preconditioned for at least 4 weeks. Warm preconditioning inhibited the acclimation of plants subjected to long photoperiods. Removing leaves from plants exposed to low temperatures and short days inhibited acclimation. Removal of buds did not affect acclimation. Plants did not acclimate unless they were exposed to at least 4 weeks of short photoperiods prior to defoliation. Plants began to acclimate to cold at the time of growth cessation but not before. When half of the leaves were removed from plants, the defoliated and foliated branches both acclimated as well as branches on completely foliated plants. Girdling the phloem between foliated and defoliated branches prevented acclimation of the latter regardless of the position of the girdle in relation to the root system and the defoliated branch. When all of the leaves of plants were covered with aluminum foil to exclude light after 0 or 4 weeks of exposure to short days, the results resembled a defoliation study, i.e., plants with leaves covered at the start of the experiment failed to acclimate, and those covered after 4 weeks acclimated to some extent but less than uncovered control plants. Under longday conditions plants with all leaves covered failed to acclimate, and plants with none or half of their leaves covered acclimated equally and to a limited extent. Under short-day conditions, however, the covered branches of partially covered plants acclimated more than their uncovered counterparts or branches of totally uncovered plants.

⁴ Present Address: Department of Plant and Soil Science, University of Vermont, Burlington, Vermont 05401.

¹ This research was supported in part by a grant from the Louis W. and Maud Hill Family Foundation.

² Scientific Journal Series Paper No. 7265 of the Minnesota Agricultural Experiment Station.

This article has been cited by other articles:

				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]

				A. Welling, T. Moritz, E. T. Palva, and O. Junttila Independent Activation of Cold Acclimation by Low Temperature and Short Photoperiod in Hybrid Aspen Plant Physiology, August 1, 2002; 129(4): 1633 - 1641. [Abstract] [Full Text] [PDF]