Ice Adhesions in Relation to Freeze Stress1
Ice Adhesions in Relation to Freeze Stress1
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与冷冻应力相关的冰粘附1
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通讯作者：
Myrtle N. Smith
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作者：
C. R. Olien;Myrtle N. Smith
在冷冻过程中，冰和亲水性植物物质之间的竞争性相互作用导致通过间隙液体产生粘附能。讨论了粘附能的热力学基础，并对所涉及的能量进行了估计。在本研究中，结合结晶能和霜干燥能，从微观上观察了粘附能的影响。冬大麦完整冠部组织中冰的复杂特征而在不产生人工制品的情况下对冷冻组织进行切片的问题导致了在冰和细胞壁聚合物的网格中对单个大麦细胞的替代研究。冰、细胞壁聚合物和质膜之间的粘附形成复杂的相互作用系统，其中结晶模式是确定应力和损伤的主要因素。
In freezing, competitive interaction between ice and hydrophilic plant substances causes an energy of adhesion to develop through the intersitial liquid. The thermodynamic basis for the adhesion energy is disussed, with estimates of the energies involved. In this research, effects of adhesion energy were observed microscopicaUly in conjunction with energies of crystaflization and frost desication. The complex character of ice in intact crown tissue of winter barley (Hordeum vulgare L.) and the problems of sectioning frozen tissue without producing artifacts led to an alternative study of single barley ceUs in a mesh of ice and cell wall polymers. Adhesions between ice, cell wall polymers, and the plasmalemma form a complexly interacting system in which the pattern of crystallization is a major factor in determination of stress and injury.