Root rot symptoms in sugar beet lines caused by Fusarium oxysporum f. sp. betae

The soil-borne fungus Fusarium oxysporum can cause both Fusarium yellows and Fusarium root rot diseases with severe yield losses in cultivated sugar beet. These two diseases cause similar foliar symptoms but different root response and have been proposed to be caused by two distinct F. oxysporum for...

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Bibliographic Details
Published in:European journal of plant pathology 2018-03, Vol.150 (3), p.589-593
Main Authors: Hanson, Linda, De Lucchi, Chiara, Stevanato, Piergiorgio, McGrath, Mitch, Panella, Lee, Sella, Luca, De Biaggi, Marco, Concheri, Giuseppe
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Black rot
Breeding
Discoloration
Disease
Ecology
Fusarium
Fusarium oxysporum
Genotypes
Germplasm
Inoculation
Life Sciences
Plant Pathology
Plant Sciences
Root rot
Yellows
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Summary:The soil-borne fungus Fusarium oxysporum can cause both Fusarium yellows and Fusarium root rot diseases with severe yield losses in cultivated sugar beet. These two diseases cause similar foliar symptoms but different root response and have been proposed to be caused by two distinct F. oxysporum formae speciales. Fusarium yellows, caused by F. oxysporum f. sp. betae, presents vascular discoloration, whereas Fusarium root rot, due to F. oxysporum f. sp. radicis-betae, appears as black rot visible on the root surface. The aim of this work was to study the host-pathogen interaction between sugar beet lines and isolates originally characterized as Fusarium oxysporum f. sp. betae . Eight susceptible sugar beet lines, selected by the USDA-ARS (US) and UNIPD (University of Padova, Italy) breeding programs, were inoculated with three different isolates of F. oxysporum f. sp. betae , the causal agent of Fusarium yellows, representing different genetic groups. All inoculated lines developed symptoms, but severity, expressed as area under the disease progress curve (AUDPC), differed significantly ( P  
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-017-1302-x