000 02125nam a22003857a 4500
001 G68366
003 MX-TxCIM
005 20211006080737.0
008 121211s ||||f| 0 p|p||0|| |
020 _a970-648-035-8
040 _aMX-TxCIM
072 0 _aH20
082 0 4 _a632.4
_bGIN
100 1 _aHalama, P.
_uSeptoria and Stagonospora Diseases of Cereals: A Compilation of Global Research. Proceedings of International Workshop, 5. Mexico, D.F. (Mexico); 20-24 Sep 1999
110 2 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245 0 0 _aAggressiveness of Phaeosphaeria nodorum isolates and their in vitro secretion of cell-wall-degrading enzymes
260 _aMexico, DF (Mexico)
_bCIMMYT :
_c1999
340 _aPrinted
520 _aThe relationship between the in vitro production of cell-wall-degrading enzymes and the aggressiveness of three Phaeosphaeria nodorum isolates was studied. When grown in liquid medium containing 1% cell wall from wheat leaves as the only carbon source, the isolates secreted xylanase, ß-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. Xylanase, cellulase, polygalacturonase, and butyrate-esterase were positively correlated with isolate aggressiveness. The most aggressive isolate produced a higher proportion of xylanase than the other two isolates, suggesting the role of this enzyme in the pathogenesis of P. nodorum.
546 _aEnglish
591 _a9910|AGRIS 0001
593 _aJose Juan Caballero
595 _aCPC
650 1 0 _aEnzymes
650 1 7 _aFungi
_gAGROVOC
_2
_91121
650 1 0 _aPathogens
_91197
650 1 7 _aPlant diseases
_gAGROVOC
_2
_91206
650 1 0 _aStatistical analysis
_91276
653 0 _aCIMMYT
700 1 _aDumortier, V.,
_ecoaut.
700 1 _aGinkel, M. van|McNab, A.|Krupinsky, J.
_eeds.
700 1 _aLalaoui, F.,
_ecoaut.
700 1 _aPaul, B.,
_ecoaut.
_92495
942 _cPRO
999 _c4381
_d4381