【摘要】 液体培养5种稻瘟菌生理小种.随着培养天数增加,ZC₃、ZD₁和ZG₁培养液中纤维素酶活性增高较快,而ZE₁和ZF₁增高较慢.培养液中纤维素酶活性增高快的,葡萄糖含量增加也快.培养8天的稻瘟菌培养液中各生理小种果胶酶活性高低顺序,果胶甲酯酶为:ZD₁>ZC₃>ZG₁>ZE₁>ZF₁;多聚半乳糖醛酸酶活性为:ZD₁>ZC₃>ZE₁>ZF₁>ZG₁.研究表明,胞外纤维素酶和果胶酶活性高的稻瘟菌生理小种,其致病性也强.更多还原

【Abstract】 The Cellulase activity and content of glucose of Piricularia OryzaeCavara in races ZC₃, ZD₁, ZE₁, ZF₁ and ZG₁ in liquid culture were determinedafter different culture days The results were shown as follows: （1） Cellulaseactivity of P. O. Cavara in races ZC₃, ZD₁and ZG₁was higher than that of P. O. Ca-vara in races ZE₁, ZF₁; （2）The content of glucose in culture solution was higherin accordance with higher cellulase activity; （3）Cellulase activity decreased,but the content of glucose increased significantly after 20 days. Pectin methy-lesterase activity of 5 races in liquid cultrue after 8 days was; ZD₁>ZC₃>ZG₁>ZE₁>ZF₁. There were positive correlations between the pathogenicity of P.O. Carara and the activity of cellulase and pectinase.更多还原