Changes in the cytosol carbohydrate composition during the cytodifferentiation process in fungi of the order Agaricales

被引:0
|
作者
Feofilova, EP
Tereshina, VM
Memorskaya, AS
Zav'yalova, LA
Maryshova, NS
机构
[1] Russian Acad Sci, Inst Microbiol, Moscow 117811, Russia
[2] Moscow MV Lomonosov State Univ, Moscow 119899, Russia
关键词
fungi; Basidiomycetes; polyols; trehalose; hypothermia; hyperthermia;
D O I
暂无
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
It was established that the disaccharide trehalose and the polyols mannitol and arabitol are the main cytosol carbohydrates of Basidiomycetes, whereas inositol is a minor component. Fungal cell differentiation is accompanied by qualitative and quantitative changes in the cytosol carbohydrate composition, which are species-specific and largely dependent on the cultivation temperature dynamics. It was shown for the first time that a cold shock, which triggers fruiting body formation in Lentinus edodes, causes intense arabitol synthesis, a decrease in the mannitol level, and the appearance of glycerol. Based on these results, in conjunction with the data on the temperature dependence of fruiting body formation in fungi under natural conditions, we suggest that fungi contain temperature-dependent protective carbohydrates. These include arabitol, mannitol, and glycerol under conditions of hypothermia and trehalose, inositol, and possibly sucrose under conditions of hyperthermia. Pleurotus ostreatus basidiospores and fruiting bodies were established to contain sucrose and an unidentified disaccharide. The data obtained are discussed in terms of the Basidiomycetes taxonomy and the relationship between Basidiomycetes and the kingdom Planta.
引用
收藏
页码:304 / 309
页数:6
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