The growth of Ophiostoma ulmi and O. novo-ulmi EAN and NAN races on callus cultures from Ulmus carpinifolia and U. pumila at 21, 25 and 33 °C were investigated and compared with the degree of compatibility of in vivo fungus-whole plant interactions and with fungal growth rates on a range of agar media at 21, 25 and 33 °C. No correlation was found between fungal growth on callus cultures, whole plant compatibility or incompatibility, and growth in the agar media, at any of the test temperatures. Mycelium of the isolates H328 of EAN O. novo-ulmi and E2 of O. ulmi showed intercellular growth and caused plasmolysis and necrosis of cells of both Ulmus species, although histological examination revealed that calli of U. carpinifolia suffered greater damage.
In vitro analysis of the interaction between elm and Ophiostoma ulmi or O. novo-ulmi / A. SCALA; C. COMPARINI; S. TEGLI; A. RAGAZZI; I. DELLAVALLE; L. MITTEMPERGHER; C. LAGAZIO. - In: PETRIA. - ISSN 1120-7698. - STAMPA. - 6:(1996), pp. 91-103.