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Ultrastructure of Calli from Resistant and Susceptible Chestnut Inoculated with Phytophthora cambivora
Author(s) -
Casares A.,
González A.,
Tamés R. Sánchez
Publication year - 1994
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1994.tb00003.x
Subject(s) - biology , hypha , callus , haustorium , botany , inoculation , fungus , host (biology) , horticulture , ecology
The infection and colonization of calli from susceptible ( Castanea sativa Miller ) or resistant ( C. crenata Sieb and Zucc.) chestnut by zoospores of Phytophthora cambivora (Petri) Buisman was studied using scanning and transmission electron microscopy. P. cambivora grew more slowly over calli from C. crenata than C. sativa . In both calli the fungus penetrated along the surface fissures. In C. sativa callus, the fungus grew intercellularly and penetrated the host cells as a haustorium or intracellular hyphae. In callus from C. crenata the hyphae grew mostly intercellularly, due in part to the fact that the host cell formed wall appositions which made penetration difficult.