PRODUCTION OF PECTIC AND CELLULOLYTIC ENZYMES BY AGGRESSIVE AND NON-AGGRESSIVE STRAINS OF OPHIOSTOMA ULMI.ELGERSMA DM.1976; NETHERL. J. PLANT PATHOL.; NETHERL.; DA. 1976; VOL. 82; NO 5; PP. 161-172; BIBL. 18 REF.Article

DETECTION OF A PHYTOTOXIC GLYCOPEPTIDE PRODUCED BY OPHIOSTOMA ULMI IN ELM BY ENZYME-LINKED IMMUNOSPECIFIC ASSAY (ELISA)SCHEFFER RJ; ELGERSMA DM.1981; PHYSIOL. PLANT PATHOL.; ISSN 0048-4059; GBR; DA. 1981; VOL. 18; NO 1; PP. 27-32; BIBL. 18 REF.Article

A STUDY OF THE DEVELOPMENT OF OPHIOSTOMA ULMI IN ELMS WITH IMMUNOLOGICAL TECHNIQUESELGERSMA DM; STEERENBERG PA.1978; NETHERL. J. PLANT PATHOL.; NLD; DA. 1978; VOL. 84; NO 4; PP. 127-133; ABS. DUT; BIBL. 15 REF.Article

TYLOSE FORMATION IN ELMS AFTER INOCULATION WITH AN AGGRESSIVE OR A NON-AGGRESSIVE STRAIN OF OPHIOSTOMA ULMI OR WITH A NON-PATHOGEN TO ELMS.ELGERSMA DM; MILLER HJ.1977; NETHERL. J. PLANT. PATHOL.; NETHERL.; DA. 1977; VOL. 83; PP. 241-243; ABS. NEERL.; BIBL. 7 REF.Article

FURTHER STUDIES ON THE ACTIVITY OF CELL WALL DEGRADING ENZYMES OF AGGRESSIVE AND NON-AGGRESSIVE ISOLATES OF OPHIOSTOMA ULMISVALDI R; ELGERSMA DM.1982; EUR. J. FOR. PATHOL.; ISSN 0300-1237; DEU; DA. 1982; VOL. 12; NO 1; PP. 29-36; ABS. FRE/GER; BIBL. 2 P.Article

FURTHER STUDIES ON THE ACTIVITY OF CELL WALL DEGRADING ENZYMES OF AGGRESSIVE AND NON-AGGRESSIVE ISOLATES OF OPHIOSTOMA ULMISVALDI R; ELGERSMA DM.1982; SONDERDRUCK AUS EUROPEAN JOURNAL OF FOREST PATHOLOGY; DEU; DA. 1982; VOL. 12; NO 1; 8 P.; BIBL. 32 REF.Miscellaneous

IDENTIFICATION OF A POLYACETYLENIC PHYTOALEXIN IN TOMATO PLANTS AFTER INOCULATION WITH VERTICILLIUM ALBO-ATRUMELGERSMA DM; OVEREEM JC.1981; NETH. J. PLANT PATHOL.; ISSN 0028-2944; NLD; DA. 1981; VOL. 87; NO 2; PP. 69-70; BIBL. 3 REF.Article

SPREAD AND SURVIVAL OF AN AGGRESSIVE AND A NON-AGGRESSIVE STRAIN OF OPHIOSTOMA ULMI IN ELMSELGERSMA DM; HEYBROEK HM.1979; NETHERL. J. PLANT PATHOL.; NLD; DA. 1979; VOL. 85; NO 6; PP. 235-240; ABS. DUT; BIBL. 6 REF.Article

DUTCH ELM DISEASE: AN ECOLOGICAL ACCIDENTHEYBROEK HM; ELGERSMA DM; SCHEFFER RJ et al.1982; OUTLOOK AGRIC.; GBR; DA. 1982; VOL. 11; NO 1; PP. 1-9; BIBL. 6 REF.Article

SYMPTOM EXPRESSION IN ELMS AFTER INOCULATION WITH COMBINATION OF AN AGGRESSIVE AND A NON-AGGRESSIVE STRAIN OF OPHIOSTOMA ULMISCHEFFER RJ; HEYBROEK HM; ELGERSMA DM et al.1980; NETH. J. PLANT PATHOL.; ISSN 0028-2944; NLD; DA. 1980; VOL. 86; NO 6; PP. 315-317; ABS. DUT; BIBL. 3 REF.Article