Plant Pathology (2000) 49, 727-733

F. Lalaoui, P. Halama, V. Dumortier and B. Paul (2000)
Cell wall-degrading enzymes produced in vitro by isolates of Phaeosphaeria nodorum differing in aggressiveness
Plant Pathology 49 (6), 727-733
Abstract: 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, ß-xylosidase, polygalacturonase, ß-galactosidase, cellulase, ß-1,3-glucanase, ß-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.
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Database assignments for author(s): Bernard Paul, Patrice Halama

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Parastagonospora nodorum