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      Response of the Higher Basidiomycetic Ganoderma resinaceum to Sodium Chloride Stress

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          Abstract

          Ganoderma resinaceum tolerated sodium chloride salt stress within a range of 0 mM till 300 mM. It responded to salt stress with fluctuation in proline formation at different NaCl concentrations. However,the mycelial dry weight,total protein contents and exopolysaccharides did not changed considerably. Increasing sodium chloride concentration led to morphological alteration in fungal mycelia with disappearance of fungal cell wall,plasmolysis,and vacuolation as indicated with electron microscopic examination of the fungal growth.

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          Most cited references31

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          A low-viscosity epoxy resin embedding medium for electron microscopy.

          A R Spurr (1969)
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            Ion Homeostasis in NaCl Stress Environments.

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              Physiological roles of trehalose in bacteria and yeasts: a comparative analysis.

              The disaccharide trehalose is widely distributed in nature and can be found in many organisms, including bacteria, fungi, plants, invertebrates and mammals. Due to its particular physical features, trehalose is able to protect the integrity of the cell against a variety of environmental injuries and nutritional limitations. In addition, data available on several species of bacteria and yeast suggest specific functions for trehalose in these organisms. Bacteria can use exogenous trehalose as the sole source of carbon and energy as well as synthesize enormous amounts of the disaccharide as compatible solute. This ability to accumulate trehalose is the result of an elaborate genetic system, which is regulated by osmolarity. Some mycobacteria contain sterified trehalose as a structural component of the cell wall, whereas yeast cells are largely unable to grow on trehalose as carbon source. In these lower eukaryotes, trehalose appears to play a dual function: as a reserve compound, mainly stored in vegetative resting cells and reproductive structures, and as a stress metabolite. Recent findings also point to important biotechnological applications for trehalose.
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                Author and article information

                Journal
                Mycobiology
                Mycobiology
                MB
                Mycobiology
                The Korean Society of Mycology
                1229-8093
                2092-9323
                September 2007
                30 September 2007
                : 35
                : 3
                : 124-128
                Affiliations
                [1 ]Tanta University, Faculty of Science, Botany Department, Tanta 31527, Egypt.
                [2 ]Department of Biological and Environmental Science, Faculty of Home Economics, Al-Azhar University, Tanta, Egypt.
                Author notes
                Corresponding author ( Yehiam2001@ 123456yahoo.com )
                Article
                10.4489/MYCO.2007.35.3.124
                3763139
                24015082
                0ad9d1a9-210a-4189-b7fb-8bf56b286248
                Copyright © 2007 by The Korean Society of Mycology

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 03 May 2007
                Categories
                Research Article

                Plant science & Botany
                proline,sodium chloride,ganoderma resinaceum,exopolysaccharides
                Plant science & Botany
                proline, sodium chloride, ganoderma resinaceum, exopolysaccharides

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