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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Does the synthesis of sugar alcohols represent a general mechanism of plant stress response?
 Peldřimovská, Jitka ; Lipavská, Helena (advisor) ; Zelenková, Sylva (referee)
Plants cope with adverse environmental conditions with broad variety of defence mechanisms. One of them is the accumulation of compatible solutes, e.g. carbohydrates including sugar alcohols. The compatible solutes are involved in osmotic adjustment, scavenging of reactive oxygen species and they can protect macromolecules and cell membranes by simulation of water envelopes. The sugar alcohols appear in a large range of plants where they serve as primary products of photosynthesis and are involved in long distance transport of C and energy storage. Homologues of the enzymes of polyol metabolism, however, have been recently found also in the plant species that do not use sugar alcohols for fulfilling of above mentioned basic functions of carbohydrate metabolism and where their role remains elusive. It is well known that some plants are able to switch between different carbohydrates in response to different stresses, and some produce polyols only at a certain stage of development. It is therefore question of further studies, whether the polyols cannot be observed in other plants under specific stress conditions and in certain developmental stages as a part of stress response. The aim of this Bachelor thesis is to summarize knowledge of mannitol and sorbitol roles, and especially their involvement in...
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