植物细胞的抗冻性：从质膜和微区角度探讨。

Freezing Tolerance of Plant Cells: From the Aspect of Plasma Membrane and Microdomain.

机构信息

Central Infrastructure Group Genomics and Transcript Profiling, Max-Planck-Institute of Molecular Plant Physiology, Potsdam, Germany.

United Graduate School of Agricultural Sciences and Department of Plant-biosciences, Faculty of Agriculture, Iwate University, Morioka, Japan.

出版信息

Adv Exp Med Biol. 2018;1081:61-79. doi: 10.1007/978-981-13-1244-1_4.

DOI:10.1007/978-981-13-1244-1_4

PMID:30288704

Abstract

Freezing stress is accompanied by a state change from water to ice and has multiple facets causing dehydration; consequently, hyperosmotic and mechanical stresses coupled with unfavorable chilling stress act in a parallel way. Freezing tolerance varies widely among plant species, and, for example, most temperate plants can overcome deleterious effects caused by freezing temperatures in winter. Destabilization and dysfunction of the plasma membrane are tightly linked to freezing injury of plant cells. Plant freezing tolerance increases upon exposure to nonfreezing low temperatures (cold acclimation). Recent studies have unveiled pleiotropic responses of plasma membrane lipids and proteins to cold acclimation. In addition, advanced techniques have given new insights into plasma membrane structural non-homogeneity, namely, microdomains. This chapter describes physiological implications of plasma membrane responses enhancing freezing tolerance during cold acclimation, with a focus on microdomains.

摘要

冷冻胁迫伴随着从水到冰的状态变化，具有多种导致脱水的方面；因此，高渗和机械应激与不利的冷却应激并行作用。植物物种之间的抗冻性差异很大，例如，大多数温带植物可以克服冬季冷冻温度造成的有害影响。质膜的不稳定性和功能障碍与植物细胞的冷冻损伤密切相关。植物的抗冻性在暴露于非冷冻低温（低温驯化）时会增加。最近的研究揭示了质膜脂质和蛋白质对低温驯化的多效响应。此外，先进的技术为质膜结构非均质性（即微区）提供了新的见解。本章描述了在低温驯化过程中增强植物抗冻性的质膜反应的生理意义，重点介绍了微区。