European Journal of Plant Pathology (2018) 151, 745-755
Jelena Bacanovic-Sisic, Adnan Sisic, Jan Henrik Schmidt and Maria Renate Finckh (2018)
Identification and characterization of pathogens associated with root rot of winter peas grown under organic management in Germany
European Journal of Plant Pathology 151 (3), 745-755
Abstract: Root rots are limiting factor for pea production worldwide. This disease is caused by a pathogen complex and the role of single pathogens is unclear. This study aimed at identifying pathogens involved in a root rot of organically grown field pea in Germany, and establishing their importance in the disease complex. The potential of yard waste compost to suppress the diseased was also studied. Average disease severity index was similar in 2010 and 2011 (DI of 4.56 to 4.59, respectively) but it increased in 2012 to DI 5.8. Peyronellaea pinodella was most frequently isolated pathogen, with isolation frequency from 86%, 73% and 86% in 2010, 2011 and 2012, respectively. In addition, Didymella pinodes, Fusarium solani f. sp. pisi, F. oxysporum f. sp. pisi and F. avenaceum were the main fungi recovered from pea roots. In pathogenicity test all of the tested pathogens caused weak symptoms on the pigmented winter variety EFB33 and moderate to severe symptoms on the white flowering summer variety Santana. F. avenaceum was the most aggressive pathogen on Santana with DI of 7.4 followed by P. pinodella with DI of 5.7. The high aggressiveness combined with the wide host range highlights the possibility of F. avenaceum emerging as potential risk for organic crop rotation. High levels of resistance of EFB33 against all pathogens shows the potential of this variety to serve as a resource in further research for identification and development of new sources of resistance against root rot diseases of pea.
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Link to article at publishers website
Database assignments for author(s): Maria R. Finckh
Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
Pest and/or beneficial records:
Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
---|---|---|---|---|
Neocosmospora pisi | Pea (Pisum sativum) | Germany | ||
Fusarium avenaceum | Pea (Pisum sativum) | Germany | ||
Didymella pinodes | Pea (Pisum sativum) | Germany | ||
Fusarium oxysporum f.sp. pisi | Pea (Pisum sativum) | Germany | ||
Didymella pinodella | Pea (Pisum sativum) | Germany |