Premium
Cytopathological Responses of Picea abies Seedling Roots Challenged in vitro by a Necrotrophic Fusarium avenaceum (Fr.) Sacc.
Author(s) -
Asiegbu F. O.,
Johansson M.,
Daniel G.
Publication year - 1997
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.1439-0434.1997.tb00393.x
Subject(s) - biology , seedling , pathogen , botany , browning , fusarium , host (biology) , picea abies , resistance (ecology) , fungus , plant disease resistance , horticulture , microbiology and biotechnology , agronomy , ecology , biochemistry , gene
Interaction of the necrotroph Fusarium avenaceum with seedling roots of Norway spruce was studied. The results showed that Norway spruce seedlings were susceptible to the pathogen but disease progression and severity was dependent on inoculum potential. Host recognition of the pathogen marked by hypersensitive browning reactions occurred late, thus making successful resistance to cellular damage impossible. Such host resistance responses were mostly in the form of lignification, accumulation of electron dense materials and papillae formation.