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Factors Affecting Ice Nucleation in Plant Tissues

Edward N. Ashworth, Glen A. Davis and Jeffrey A. Anderson
Plant Physiology
Vol. 79, No. 4 (Dec., 1985), pp. 1033-1037
Stable URL: http://www.jstor.org/stable/4269656
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Factors Affecting Ice Nucleation in Plant Tissues
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Abstract

Factors affecting the ice nucleation temperature of plants and plant tissues were examined. The mass of a sample had a marked effect on ice nucleation temperature. Small tissue samples supercooled to -10°C and were not accurate predictors of the nucleation temperature of intact plants in either laboratory or field experiments. This effect was not unique to plant tissues and was observed in autoclaved and control soil samples. Ice nucleation temperatures of bean, corn, cotton, and soybean seedlings were influenced by the length of subzero exposure, presence of ice nucleation active bacteria, and leaf surface wetness. The number of factors influencing ice nucleation temperature suggested that predicting the freezing behavior of plants in the field will be complex.

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