Protection research centre, lincoln university, lincoln, new zealand spongospora subterranea root infection reduces potato plant growth and tuber yields. Spongospora subterranea fueron observadas en belladona vellosa solanum sarrachoide. Project report epidemiology, autecology and control of spongospora subterranea, cause of potato powdery scab ref. Evidence that potato tubers are susceptible to infection by spongospora subterranea only during lenticel formation and proliferation is presented and the capacity of apparently healthy tubers to carry low levels of inoculum is demonstrated. Epidemiology of spongospora subterranea, the cause. Knowledge of global genetic diversity and population structure of pathogens is essential for disease management including resistance breeding. Global genetics and invasion history of the potato powdery. Investigating factors affecting infection of potato by spongospora subterranea alison lees, louise sullivan and jennie brierley plant pathology, scri, invergowrie, dundee, dd2 5da, uk conclusions and future work dna of s.
Reaction of potato varieties to potato moptop virus. Based on visual inspection, discrimination between common scab streptomyces spp. Effect of environmental vectors on infection of potato by. The intention was to establish a site for information and orientation on different aspects of the pathogen spongospora subterranea f. Spongospora subterranea is the causal agent of powdery scab on potato. Investigating factors affecting infection of potato by.
A description is provided for spongospora subterranea f. Pdf powdery scab caused by spongospora subterranea is a serious disease, affecting both the quality and. Pdf differential distrubution of candidadate biocontrol. Monitoring spongospora subterranea development in potato. In brief, the lifecycle of the pathogen spongospora subterranea f. It is caused by the cercozoan spongospora subterranea f. During 19941996 surveys were performed in the netherlands on tubers with symptoms resembling common scab.
Pdf the identification and detection of spongospora subterranea. Though this disease can reduce yield somewhat, the true economic effect is due to the unmarketable, scabbed appearance figure 1 as well as rejection of tubers as seed to prevent. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. Powdery scab, caused by the obligate plasmodiophorale fungus spongospora subterranea, has become an important disease for potato production worldwide. Class project for pp 728, soilborne plant pathogens, fall 2012 introduction. Monitoring spongospora subterranea development in potato roots. These can eventually rupture within the tuber periderm. Other articles where spongospora subterranea is discussed. The first signs of infection are seen as small brown spots associated with lenticels or wounds and less frequently with eyes. Dehne hw, adam g, diekmann m, frahm j, maulermachnik a, halteren p van, eds. Effect of environmental vectors on infection of potato by spongospora subterranea f.
Pdf monitoring spongospora subterranea development in. Detection and quantification of spongospora subterranea in. Welcome to the spongospora competence center all about spongospora subterranea, member of the plasmodiophorid family. A sensitive realtime polymerase chain reaction pcr assay was developed for the quantification of spongospora subterranea, the cause of powdery scab and root galling in potato, and the vector of potato mop top virus. A new distribution map is provided for spongospora subterranea wallr.
Spongospora subterranea sponsuoverview eppo global. Kingdom protista 1protk phylum cercozoa 1cercp class phytomyxea. Its success is attributed to the characteristics of its pathogen and features of its life cycle. General information about spongospora subterranea sponsu. Inspections are performed on unwashed samples, incidentally supported by microscopic examination.
Symptoms of powdery scab include small lesions in the early stages of the disease, progressing to raised pustules containing a powdery mass. Infection of potato by spongospora subterranea sciencedirect. Serological detection of spongospora subterranea f. Iftikhar et al characterization of spongospora subterranea f sp subterranea root hair and epidermal cells of roots under a stereomicroscope with 20fold magnificatiarn rating of root infection done on 04 scale of marz 1989, vvhsre 0 no sporangia, 1 only a fevv sporangia, several roots with sporangia, 3 sporangia regularly. The significance to infection of the histological changes during the transformations of stomata to lenticels is discussed. Egan, department of environmental resource management, national university of ireland, belfield, dublin 4, ireland introduction the plasmodiophorid spongospora subterranea f.
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