Advances in Low-Temperature Biology

Cold is the single most important enemy of life, and this book, first published in 1985, discusses the responses of living organisms to low temperatures. Subfreezing temperatures in particular affect the properties of water, which is essential to life, and the book describes the physics and chemistry of water in the context of physiology. Injury from cooling and the way in which organisms respond and survive, as well as the mechanism of cold hardening in micro-organisms, insects and plants are discussed. The laboratory exploitation of low temperatures to preserve life and to protect labile materials against freeze damage is also considered.

The theme of this 14th International Symposium on Blood Transfusion is closely related to the work and scientific contributions of the Dutch cryobiology pioneer Dr. Herman W. Krijnen of the Dutch Red Cross Central Laboratory. Dr. Krijnen was known and respected in the national and interna tional blood transfusion community as an extremely competent scientist and a beloved and admired colleague. Dr. Krijnen was intentionally honoured with the invitation to open this symposium on cryopreservation and low temperature biology in blood transfusion and be the guest of honour at this event. Unfortunately, Dr. Krijnen suddenly died on the first of June 1989. In honour and mem ory of Dr. Krijnen this symposium will therefore be dedicated to him. Since the lOth International Symposium on Blood Transfusion in 1985 highlighted the theme of "Future developments in blood banking", major changes have occurred in the blood banking world. Most of these changes were forced upon the Blood Banks by the fear of spreading AIDS through contaminated donations. This not only led to the wide spread testing of blood, but also to a more appropriate counselling of the community and the blood donors in specific. Additionally, virus inacti vation techniques were introduced for those components derived from multiple donations and intended for a regular transfusion in haemophi lia patients and others.

The importance of low temperature stress physiology research has become increasingly apparent in agriculture for productions of food, fibre and ornamental plants. This volume consists of two parts, there are a total of 14 chapters including 6 chapters dealing with cold accumulation related topics, 6 dealing with freeze stress and 2 related to ethylene production and mefluidide protection.

To humans, cold has a distinctly positive quality. 'Frostbite', 'a nip in the air', 'biting cold', all express the concept of cold as an entity which attacks the body, numbing and damaging it in the process. Probably the richness of descriptive English in this area stems from the early experiences of a group of essentially tropical apes, making their living on a cold and windswept island group half way between the Equator and the Arctic. During a scientific education we soon learn that there is no such thing as cold, only an absence of heat. Cold does not invade us; heat simply deserts. Later still we come to appreciate that temperature is a reflection of kinetic energy, and that the quantity of kinetic energy in a system is determined by the speed of molecular movement. Despite this realization, it is difficult to abandon the sensible prejudices of palaeolithic Homo sapiens shivering in his huts and caves. For example; appreciating that a polar bear is probably as comfortable when swimming from ice floe to ice floe as we are when swimming in the summer Mediterranean is not easy; understanding the thermal sensa tions of a 'cold-blooded' earthworm virtually impossible. We must always be wary of an anthropocentric attitude when considering the effects of cold on other species.

Biophysics is the science of physical principles underlying the "phenomenon of life" on all levels of organization. This book begins by explaining molecular and ionic interactions, movements, excitation and energy transfer, and the self-organization of supramolecular structures. Then the biological organism is introduced as a non-equilibrium system. Finally, system analyses are discussed as well as environmental biophysics, ecological interactions, growth, differentiation, and evolution. A growing number of applications in biotechnology are based on these biophysical concepts.

This volume is compiled based on the proceedings of the 5th International Plant Cold Hardiness Seminar, which was held at Oregon State University, Corvallis, Oregon, USA, August 5 to 8, 1996. Participants representing 16 nations and 22 U. S. states attended the seminar. Researchers came from major laboratories around the world involving plant cold hardiness research. The information compiled in this volume represents the state-of the-art research and our understanding of plant cold hardiness in terms of molecular biol ogy, biochemistry, and physiology. The 1996 International Plant Cold Hardiness Seminar was the fifth of the series; it was first held in 1977 at the University of Minnesota, St. Paul, MN, and since then has met every 5 years. The overall goal of this seminar series is to foster the exchange of ideas and research findings among the diverse groups of scientists studying freezing and chilling stresses from a wide variety of perspectives. This is the only international conference focus ing its programs entirely on low temperature stress in plants. In accordance with the tradi tion, the fifth conference focused on freezing and chilling stress of plants and covered various aspects of plant cold hardiness, including molecular genetics, biochemistry, physi ology, and agricultural applications. All contributors to this volume are eminent researchers who have had significant contributions to the knowledge of plant cold hardiness.

Biology of Antarctic Fish presents the most recent findings on the biology of fish in the unique environment of the Antarctic ocean. At present the year-round temperature of the coastal waters is very near -1,87 ° C, the equilibrium temperature of the ice-seawater mixture. This extremely low temperature affects different levels of organization of fish life: individuals, organ systems, cells, organelles, membranes, and molecules. Exploring ecology, evolution, and life history as well as physiology, biochemistry, and molecular biology of Antarctic fish the book describes the mechanisms of cold adaptation at all these levels. It provides material for discussion also for fundamental questions in the field of adaptation to an extreme environment and therefore is of particular interest not only to specialized scientists, but also to those involved in basic and evolutionary biology.