Glass Transitions in Soybean Seed | Zendy

Fabio Bruni | Zendy; A. C. Leopold | Zendy

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Glass Transitions in Soybean Seed

Author(s) -

Fabio Bruni,

A. C. Leopold

Publication year - 1991

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.96.2.660

Subject(s) - desiccation , dehydration , glycine , glass transition , spin glass , diffusion , precipitation , chemistry , rotational diffusion , water content , materials science , chemical physics , botany , biology , molecule , thermodynamics , physics , biochemistry , organic chemistry , condensed matter physics , polymer , amino acid , meteorology , geotechnical engineering , engineering

We have investigated the mechanism by which anhydrobiotic organisms can survive severe dehydration. The method used was measurement of the rotational diffusion coefficient of a hydrophilic spin probe, inserted in the cytoplasm of soybean (Glycine max L.) axes, as a function of temperature and sample water content. Results indicate the existence of a hydration-dependent glass-like transition at physiological temperatures. No glass transitions have been observed in desiccation-intolerant samples, suggesting that the ability to withstand dehydration is associated with glass formation.

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