Water-Soluble Substances in Meristems of Buds of Picea obovata L. and Pinus sylvestris L.: Concentrations, Composition, and Properties during the Development of Freezing Tolerance

作者：Alaudinova E V^*; Simkina S Yu; Mironov P V

来源：Contemporary Problems of Ecology, 2010, 3(2): 236-240.

DOI：10.1134/S1995425510020153

• freezing
• water-soluble substances
• meristematic bud tissues
• water-retaining capacity
• Picea obovata L.
• Pinus sylvestris L.

The seasonal dynamics of water-soluble substances and water content in the meristematic tissues of vegetative buds of Picea obovata L. and Pinus sylvestris L. are considered. Changes in the concentrations of the cytoplasmic solutions of meristematic cells under their dehydration as a result of extracellular or extraorgan freezing were determined. It was found that the concentration of water-soluble substances of the cytoplasm can increase by a factor of 2-2.5 as the below-zero temperature decreases to -40 degrees C due to water crystallization. A relationship was found between the cellular content of crystallizable water, nonfreezing water, and the concentration of water-soluble substances with a decrease in temperature from 0 to -40 degrees C.

• 出版日期2010-4