Abstract
We investigated soil contamination by Spongospora subterranea f. sp. subterranea (Sss) and disease severity of powdery scab in 29 potato fields in Hokkaido, Japan, using a hydroponic culture method with tomato seedlings as bait plants. The quantity of Sss infection on the roots of bait plants was evaluated using the polymerase chain reaction (PCR) and expressed in terms of the infection potential in the soil. The infection potential was positively correlated with the disease severity of harvested tubers, whereas the spore ball density determined using PCR had an indistinct relationship with disease severity. The infection potential can be useful in evaluating soil contamination and in applying countermeasures against powdery scab.
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Nakayama, T., Horita, M. & Shimanuki, T. Spongospora subterranea soil contamination and its relationship to severity of powdery scab on potatoes. J Gen Plant Pathol 73, 229–234 (2007). https://doi.org/10.1007/s10327-007-0008-x
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DOI: https://doi.org/10.1007/s10327-007-0008-x