诱导物和金属离子对竹子白腐菌降解影响的研究  

Studies on the Influence of Inducers and Metal Ions on Bamboo Degradation by White-rot Fungus

作　　者：徐春燕[1] 王宏勋[1] 周建兵[1] 张雯[1] 张晓昱[1] 

机构地区：[1]华中科技大学生命科学与技术学院,湖北武汉430074

出　　处：《生物技术》2005年第6期68-71,共4页Biotechnology

基　　金：制浆造纸国家重点实验室(华南理工大学)开放基金项目(200439)

摘　　要：研究了4种诱导物和5种金属离子对白腐菌降解竹子的影响。结果表明这4种诱导物对木质素的降解没有明显的促进作用,低浓度的吐温80抑制纤维素的降解,降解率仅为3.057%;5种离子对木质素降解均有促进作用,一定浓度的离子明显地抑制纤维素的降解,其中Ca2+对纤维素降解的抑制作用最强,降解率仅为0.620%;诱导物和离子对半纤维素降解率影响较小;吐温80和Ca2+能显著提高半纤维素和木质素的选择系数,其中添加Ca2+时半纤维素和木质素选择性系数分别为66.565和49.331,初步显示:部分诱导物和金属离子可以有效影响白腐菌对竹子的选择性降解。The influence d inducers and metal ions on bamboo degradation by white- rot fungus was studied in this paper. The result indicated that there was no obvious promotion to lignin degradation when the 4 inducers were added to bamboo powder respectively. Low concentration Tween 80 inhibits cellulose degradation and the rate of degradation was only 3.057%. Every ion studied can promote lignin degradation, at the same time cellulose degradation was obviously inhibited by certain concentration ions. When Ca^2＋ was added in medium, cellulose degradation was evidently restrained and the rate of degradation was only 0.620%. While inducers and metal ions changed hemicellulose degradation a little. Tween 80 and Ca^2＋ can remarkably enhance the coefficient of hemicellulose and lignin selectivity. Ca^2＋ remarkably increased the coefficient of hemicellulose and lignin selectivity to 66.565 and 49.331. This result indicated that inducers and metal ions can efficiently influence bamboo selectively degradation by white- rot fungus.

关 键 词：白腐菌 竹子 选择性降解 金属离子 诱导物 

分 类 号：Q936[生物学—微生物学] Q539