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http://dx.doi.org/10.5423/RPD.2011.17.3.376

Development and Evaluation of PCR-Based Detection for Pseudomonas syrinage pv. tomato in Tomato Seeds  

Cho, Jung-Hee (Department of Plant Medicine, Chungbuk National University)
Yim, Kyu-Ock (Animal, Plant and Fisheries Quarantine and Inspection Agency)
Lee, Hyok-In (Animal, Plant and Fisheries Quarantine and Inspection Agency)
Yea, Mi-Chi (Animal, Plant and Fisheries Quarantine and Inspection Agency)
Cha, Jae-Soon (Department of Plant Medicine, Chungbuk National University)
Publication Information
Research in Plant Disease / v.17, no.3, 2011 , pp. 376-380 More about this Journal
Abstract
The bacterial speck of tomato caused by Pseudomonas syringae pv. tomato leads to serious economic losses especially on fruits of susceptible genotype. Thus, Pseudomonas syringae pv. tomato is a plant quarantine bacterium in many countries including Korea. In this study, we developed specific PCR assays for detection of the bacterium from tomato seeds. A specific primer set is designed from the hrpZ gene for specific detection of Pseudomonas syringae pv. tomato. A 501 bp PCR product corresponding to hrpZ gene was amplified only form Pseudomonas syringae pv. tomato strains, but no PCR product was amplified from other tomato bacterial pathogens, such as Pseudomonas syringae pv. glycinea, P. syringae pv. maculicola, P. syringae pv. atropurpurea, P. syringae pv. morsprunorum, and from other P. syringae pathovar strains. The nested-PCR primer set corresponding to an internal fragment of the 501 bp sequence (hrpZ) gine was used to specific detection of Pseudomonas syringae pv. tomato in tomato seed. A 119 bp PCR product using nested PCR primer was highly specific and sensitive to detect low level of Pseudomonas syrigae pv. tomato in tomato seeds. We believe that the PCR assays developed in this study is very useful to detect Pseudomonas syringae pv. tomato from the tomato seeds.
Keywords
Bacterial speck; Plant quarantine; Seed-borne disease;
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