Effect of Low Temperature on Respiration
1980; Elsevier BV; Linguagem: Inglês
10.1016/b978-0-12-675402-5.50021-0
Autores Tópico(s)Microbial Metabolites in Food Biotechnology
ResumoThis chapter discusses the general principles of the effect of temperature on enzyme reactions. The imbalances in metabolism observed with chilling-sensitive plants exposed to low temperature suggest that the respiratory activity cannot compensate for the increase in the Ea. It appears that the control mechanisms regulating respiration and glycolysis are not only insufficient to compensate for the relative changes in velocity of the reactions at low temperatures but are actually antagonistic. Chilling-sensitive plants provide a system for relating the implications of the changes in the thermodynamic and kinetic parameters of different enzyme systems at low temperatures to the regulation of cellular metabolism. An accumulation of the products of fermentation has been noted in various plant tissues maintained at low oxygen tension or under an atmosphere of nitrogen, and it is generally accepted that these products are formed from intermediates of glycolysis.
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