Heterogeneity of the genus Myrothecium as revealed by cell wall polysaccharides

被引:42
作者
Ahrazem, O
Gómez-Miranda, B
Prieto, A
Bernabé, M
Leal, JA
机构
[1] CSIC, Ctr Invest Biol, E-28006 Madrid, Spain
[2] CSIC, Inst Quim Organ, Dept Quim Organ Biol, E-28006 Madrid, Spain
关键词
Myrothecium; cell-wall polysaccharides; taxonomy;
D O I
10.1007/s002030000149
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The polysaccharides obtained from the alkali-extractable, water-soluble fraction (F1SS) from the cell wall of Myrothecium verrucaria and Myrothecium atroviride were shown to be composed of beta-(1-->6)-galactofuranose fully substituted at O-2 by terminal residues of alpha -glucopyranose and alpha -glucuronic acid. Glucuronic acid was substituted at O-4 by glucopyranose in the Myrothecium species M. inundatum, M. setiramosum, M. prestonii, M. tongaense and M. roridum. The acidic polysaccharides from Phaeostilbella atra (=Myrothecium atrum) and Myrothecium gramineum lacked the backbone of 2,6 di-b-substituted galactofuranose and contained a high amount of O-5-substituted beta -galactofuranose. The structures of the polysaccharides isolated from Myrothecium cinctum and Myrothecium penicilloides were unrelated to each other and to the polysaccharides from the other species analysed. The usefulness of these polysaccharides as a characteristic for delimitation of the genus Myrothecium is discussed.
引用
收藏
页码:296 / 302
页数:7
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