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Title: Carbohydrate reserves in Acer saccharum trees damaged during the January 1998 ice storm in northern New York

Author: Wong, B.L.; Staats, L.J.; Burfeind, A.S.; Baggett, K.L.; Rye, A.H.; Rye, A.H.;

Date: 2005

Source: Canadian Journal of Botany. 83: 668-677.

Publication Series: Miscellaneous Publication

Description: To assess the effect of the ice storm of January 1998 on sugar maple (Acer saccharum Marsh.) tree health, starch, and soluble sugars in twigs from two damaged sugarbushes (younger: trees 50-100 years old, and older: trees approximately 200 years old) in northern New York were measured throughout the leafless phase (September 1998 - May 1999). Trees severely damaged by the ice storm exhibited signs of recovery during the first growth season (1998), that is, greater numbers of lateral (epicormic) shoots and increased wood production in the current year growth ring of branches at mid-crown, and high concentrations of starch in the twigs at the time of leaf drop. Differences in reserve and soluble sugar profiles between damaged and slightly damaged or undamaged sugar maple trees and between trees of the older sugarbush and those of the younger sugarbush indicate changes in cold season physiology of damaged trees in adapting to or tolerating cold temperature. In damaged trees of the younger and older sugarbushes, the profiles of sucrose, stachyose, raffinose, and xylose were similar to those of corresponding slightly damaged or undamaged trees throughout the cold season, except for late winter sucrose, glucose, and fructose profiles, which exhibited differences in concentration and profile configurations compared with respective slightly damaged or undamaged trees. A lower concentration of sucrose in damaged older tree wood tissue after dehardening in late winter and a lower concentration of "resynthesized" starch just prior to vernal growth were observed. The data indicate that the profiles of individual sugars can provide information on changes in physiological and biochemical processes in damaged trees during the cold season.

Keywords: starch, sucrose, glucose, fructose, raffinose, stachyose

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Wong, B.L.; Staats, L.J.; Burfeind, A.S.; Baggett, K.L.; Rye, A.H. 2005. Carbohydrate reserves in Acer saccharum trees damaged during the January 1998 ice storm in northern New York. Canadian Journal of Botany. 83: 668-677.


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