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Title: Seasonal patterns of reserve and soluble carbohydrates in mature sugar maple (Acer saccharum)

Author: Wong, B.L.; Baggett, K.L.; Rye, A.H.;

Date: 2003

Source: Canadian Journal of Botany. 81: 780-788

Publication Series: Miscellaneous Publication

Description: Sugar maple (Acer saccharum Marsh.) trees exhibit seasonal patterns of production, accumulation, and utilization of nonstructural carbohydrates that are closely correlated with phenological events and (or) physiological processes. The simultaneous seasonal patterns of both reserve and soluble carbohydrates in the leaves, twigs, branches, and trunks of healthy mature sugar maple trees were characterized. The concentrations of starch and soluble sugars (sucrose, glucose, fructose, xylose, raffinose, and stachyose) were determined. Starch, the major reserve carbohydrate in sugar maple, is low during the active photosynthetic growth season. Starch is accumulated in the xylem ray tissues in late summer and early fall. During the cold season, there is a close relationship between starch hydrolysis-accumulation and temperature. Soluble sugars increase when starch concentrations decrease during the cold months, and these sugars may play a role in cold tolerance. Patterns of change in the stem tissues are similar to those in the root tissues but with slight differences in the timing.

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

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Wong, B.L.; Baggett, K.L.; Rye, A.H. 2003. Seasonal patterns of reserve and soluble carbohydrates in mature sugar maple (Acer saccharum). Canadian Journal of Botany. 81: 780-788


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