Hairy Nightshade is an Alternative Host of Spongospora subterranea, the Potato Powdery Scab Pathogen

Nitzan, Nadav; Boydston, Rick A.; Batchelor, Dallas L.; Crosslin, J. M.; Hamlin, Launa L.; Brown, Charles R.

doi:10.1007/s12230-009-9083-1

Cited by 15 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…; e.g. Nitzan et al ., ; Shah et al ., ) indicates that these stages have co‐evolved with host plants. However, tuber powdery scab has become significant more recently.…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Root infection of potato by Spongospora subterranea: knowledge review and evidence for decreased plant productivity

et al. 2015

View full text Add to dashboard Cite

Information is reviewed on root infection of potato by the plasmodiophorid Spongospora subterranea f. sp. subterranea. This pathogen has long been recognized as the cause of root galls (hyperplasia) and the economically important disease powdery scab on tubers (modified stolons). The significance for plant productivity of the zoosporangium stages of the pathogen in potato roots has only recently begun to be documented. Two experiments are described that assessed effects of S. subterranea root infection on potato plant root function and productivity. A greenhouse experiment measured root function and plant parameters for eight potato cultivars with markedly different susceptibilities to tuber powdery scab. Water uptake and plant growth were reduced by S. subterranea inoculation in all eight cultivars. The magnitudes of these negative effects, and intensities of root hyperplasia, differed among the cultivars, but were not related to respective susceptibilities to tuber powdery scab. A field trial assessed root function and plant productivity for a cultivar (Iwa) that is very susceptible to Spongospora tuber and root diseases. Soil water content beneath uninoculated plants was consistently less than for inoculated plants, indicating that inoculation reduced water uptake (root function). Inoculation reduced shoot and root dry weights, and reduced weight of tubers per plant by 42%. Spongospora subterranea causes three diseases of potato: root membrane dysfunction, root hyperplasia and tuber powdery scab. The root diseases caused by the pathogen are likely to be important both for powdery scab management and for deleterious effects on potato crop yields.

show abstract

“…; e.g. Nitzan et al ., ; Shah et al ., ) indicates that these stages have co‐evolved with host plants. However, tuber powdery scab has become significant more recently.…”

Section: Discussionmentioning

confidence: 98%

“…Nitzan et al . () and Shah et al . () reported Spongospora root galls on roots of nightshade weeds ( Solanum spp.…”

Section: Introductionmentioning

confidence: 89%

Root infection of potato by Spongospora subterranea: knowledge review and evidence for decreased plant productivity

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Some other Solanum spp. hosts of the pathogen, which do not produce stolons or tubers (modified stolons), only develop root galls (Nitzan et al 2008;Nitzan et al 2009;Shah et al 2010). In potato, the first stage of root infection by the pathogen is when zoospores infect root epidermis cells and develop into zoosporangia, and galls later form on roots, stolons or tubers.…”

Section: Introductionmentioning

confidence: 99%

Low amounts of Spongospora subterranea sporosorus inoculum cause severe powdery scab, root galling and reduced water use in potato (Solanum tuberosum)

Shah

Falloon

Butler

et al. 2011

Australasian Plant Pathol.

View full text Add to dashboard Cite

This study measured effects of Spongospora subterranea soil inoculum levels on disease of potato tubers and roots, determining relationships between amount of sporosorus inoculum at planting, and both root function during plant growth and powdery scab on tubers at harvest. In a series of shadehouse experiments, different amounts of inoculum were applied to soil before planting tubers in large pots, and effects on plant growth and powdery scab incidence and severity were determined. In a glasshouse experiment different amounts of inoculum were applied to plants growing in sand/nutrient solution culture, and effects on water use, plant parameters and intensity of S. subterranea root gall formation were measured. In the shadehouse experiments, as few as 25 sporosori mL -1 soil caused powdery scab on daughter tubers, and greater amounts of inoculum reduced plant productivity (tuber yields). In the glasshouse experiment, from one to ten sporosori g -1 sand reduced water use by plants and shoot and root dry weights, and caused severe root galling. No consistently strong relationship was found between amount of inoculum at planting and disease incidence or severity at harvest. These results highlight the ability of S. subterranea to cause disease on host plants from low amounts of inoculum when conditions favour disease development, and emphasise the potential for the pathogen to reduce plant growth and tuber yields. They also show that inoculum detection methods should detect low soil inoculum amounts if they are to be useful for powdery scab prediction.

show abstract

“…Similarly, the roots of 14 C. album plants sampled from a field badly infested with PMTV in Finland were negative as tested for PMTV by RT‐PCR. Because S. nigrum is a host of S. subterranea (Andersen et al , 2002; Nitzdan et al , 2009), these results suggest that this weed may be an important natural host of PMTV that could maintain the infestation of a field in years of crop rotation when potato is not grown.…”

Section: Dispersal Of Potato Mop‐top Virusand Establishment In New Fimentioning

confidence: 90%

Detection, distribution and control of Potato mop‐top virus, a soil‐borne virus, in northern Europe

Santala

Samuilova

Hannukkala

et al. 2010

Annals of Applied Biology

View full text Add to dashboard Cite

show abstract

Hairy Nightshade is an Alternative Host of Spongospora subterranea, the Potato Powdery Scab Pathogen

Cited by 15 publications

References 17 publications

Root infection of potato by Spongospora subterranea: knowledge review and evidence for decreased plant productivity

Root infection of potato by Spongospora subterranea: knowledge review and evidence for decreased plant productivity

Low amounts of Spongospora subterranea sporosorus inoculum cause severe powdery scab, root galling and reduced water use in potato (Solanum tuberosum)

Detection, distribution and control of Potato mop‐top virus, a soil‐borne virus, in northern Europe

Contact Info

Product

Resources

About