Ballesta J P, Alexander M
J Bacteriol. 1971 Jun;106(3):938-45. doi: 10.1128/jb.106.3.938-945.1971.
Zygorhynchus vuilleminii, a nonmelanin-containing fungus, was not lysed by mycolytic actinomycetes. Several enzymes and Streptomyces enzyme preparations digesting walls of other fungi were without appreciable activity on walls of Zygorhynchus species. A bacterium able to solubilize a portion of the Zygorhynchus wall released little or no reducing sugars from these structures. Fractions of Z. vuilleminii walls were resistant to glucanase hydrolysis, but certain fractions were digested by chitinase and microbial enzyme preparations. The walls and several wall fractions were not readily susceptible to degradation by a soil community. Walls of lysis-resistant Zygorhynchus species contained glucosamine, fucose, glucuronic acid, and galactose but little or no glucose. Resistant wall fractions were rich in uronic acid and fucose, whereas the readily degradable fractions contained abundant glucosamine. Cultural conditions affected the extent of digestion and composition of the walls. Possible reasons for the resistance of Zygorhynchus to lysis in nature are discussed.
无黑色素真菌维氏合喙藓菌不会被溶菌放线菌裂解。几种能消化其他真菌细胞壁的酶和链霉菌酶制剂对合喙藓菌属真菌的细胞壁没有明显活性。一种能够溶解部分合喙藓菌细胞壁的细菌从这些结构中释放出很少或没有还原糖。维氏合喙藓菌细胞壁组分对葡聚糖酶水解具有抗性，但某些组分可被几丁质酶和微生物酶制剂消化。土壤群落不易使合喙藓菌的细胞壁及其几个细胞壁组分降解。抗裂解的合喙藓菌属真菌的细胞壁含有氨基葡萄糖、岩藻糖、葡萄糖醛酸和半乳糖，但几乎不含或不含葡萄糖。抗性细胞壁组分富含糖醛酸和岩藻糖，而易于降解的组分含有大量氨基葡萄糖。培养条件影响细胞壁的消化程度和组成。文中讨论了合喙藓菌在自然环境中抗裂解的可能原因。
