Pathogenicity to Potato Tubers of Fusarium spp. Isolated from Potato, Cereal and Forage Crops

Potatoes are commonly grown in rotation with cereal and forage crops. Storage trials were conducted in Prince Edward Island, Canada from 2002 to 2004 to determine whether isolates of Fusarium spp. obtained from cereals or forages were able to cause disease (dry rot) in stored potato tubers. In each...

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Bibliographic Details
Published in:	American journal of potato research Vol. 85; no. 5; pp. 367 - 374
Main Authors:	Peters, Rick D, MacLeod, Chris, Seifert, Keith A, Martin, Richard A, Hale, Larry R, Grau, Craig R, MacInnis, Shelly
Format:	Journal Article
Language:	English
Published:	New York Springer-Verlag 01-10-2008 Springer Springer Nature B.V
Subjects:	Agriculture Agronomy. Soil science and plant productions alternative hosts Biological and medical sciences Biomedical and Life Sciences crop rotation cultivars Forage crops Fundamental and applied biological sciences. Psychology Fungal plant pathogens Fusarium grain crops Life Sciences necrosis pathogenicity Pathogens Phytopathology. Animal pests. Plant and forest protection Plant Breeding/Biotechnology Plant Genetics and Genomics plant pathogenic fungi Plant Pathology Plant Sciences postharvest diseases Potatoes soil-borne diseases Solanum tuberosum species differences strain differences Canada Prince Edward Island Province North America America L Seed piece decay Dry rot Plant pathogen Solanum tuberosum Decomposition Solanum tuberosum L Cereal crop Fungi Pathogenicity Potato Dicotyledones Rot Angiospermae Fusarium Tuber Spermatophyta Fungi Imperfecti Tuber plant Solanaceae Fodder crop
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Summary:	Potatoes are commonly grown in rotation with cereal and forage crops. Storage trials were conducted in Prince Edward Island, Canada from 2002 to 2004 to determine whether isolates of Fusarium spp. obtained from cereals or forages were able to cause disease (dry rot) in stored potato tubers. In each year of study, tubers of the cultivars ‘Red Norland’, ‘Yukon Gold’ and ‘Russet Burbank’ were wounded and then inoculated with an agar plug containing active mycelium of one of the 30 isolates tested. Following incubation for 5 weeks in a storage facility, tubers were cut longitudinally at the point of inoculation and the depth of necrosis measured. Isolates of F. sambucinum , F. coeruleum and F. avenaceum originating from potato tubers were strongly pathogenic to inoculated potato tubers. Isolates of F. oxysporum f.sp. medicaginis sourced from alfalfa were nonpathogenic to potato tubers, however, isolates of F. avenaceum from alfalfa and clover and F. oxysporum from clover were pathogenic to potatoes. Isolates of F. poae and F. sporotrichioides sourced from cereals were nonpathogenic and weakly pathogenic, respectively, to inoculated tubers. All isolates of F. graminearum (obtained from cereal crops) that were tested were pathogenic to potato tubers. Thus, crops grown in rotation with potatoes may harbour Fusarium spp. that can act as pathogens in subsequent potato crops.
Bibliography:	http://dx.doi.org/10.1007/s12230-008-9037-z
ISSN:	1099-209X 1874-9380
DOI:	10.1007/s12230-008-9037-z