Cell wall-degrading enzymes produced in vitro by isolates of Phaeosphaeria nodorum differing in aggressiveness

被引:37
|
作者
Lalaoui, F
Halama, P
Dumortier, V
Paul, B
机构
[1] Univ Catholique Lille, Inst Super Agr, F-59046 Lille, France
[2] Univ Bourgogne, Inst Jules Guyot, Lab Sci Vigne, F-21004 Dijon, France
关键词
aggressiveness; enzymes; Phaeosphaeria nodorum; Stagonospora nodorum;
D O I
10.1046/j.1365-3059.2000.00491.x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The relationships between in vitro production of cell wall-degrading enzymes and aggressiveness of three Phaeosphaeria nodorum isolates were investigated. When grown in liquid medium containing 1% cell wall from wheat leaves as the carbon source, the isolates secreted xylanase, alpha -arabinosidase, beta -xylosidase, polygalacturonase, beta -galactosidase, cellulase, beta -1,3-glucanase, beta -glucosidase, acetyl esterase and butyrate esterase. Time-course experiments showed different levels of enzyme production and different kinetics between isolates. A highly aggressive isolate produced more xylanase, cellulase, polygalacturonase and butyrate esterase than did the two weakly aggressive isolates. Xylanase was the most active polymer-degrading enzyme produced, suggesting a key role during pathogenesis by P. nodorum.
引用
收藏
页码:727 / 733
页数:7
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