Plant Lipid Metabolism pp 369-371 | Cite as
Is the Membrane the Primary Target in the Biological Perception of Temperature? Effect of Membrane Physical State on the Expression of Stress-Defence Genes
Abstract
Biological organisms are capable of perceiving environmental changes caused by a variety of agents. But whereas sensors of light (rhodopsins in animals or phytochromes in plants) are well-characterized, no knowledge is available concerning the thermal sensors. The only clue hitherto known about the thermal perception is that temperature decrease would result in a reduction of molecular motion in membranes, which is attained mainly via specific desaturation of fatty acids of membrane lipids [1]. It is assumed, that the response of systems to temperature stress via physiological, morphological and biochemical adjustments aimed at offset or compensate for the temperature-induced disturbances. Amongst the many compensatory responses, it seems that the major adjustment is the reorganization of the physical state of the cellular membranes, a phenomenon called “homeoviscous adaptation”.
Keywords
Thermal Sensor Desaturase Gene Thermal Perception desA Gene Homogeneous HydrogenationPreview
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