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http://dx.doi.org/10.5423/RPD.2009.15.3.183

Incidence of Bacterial Brown Spot of Phalenopsis Orchids Caused by Acidovorax avenae subsp. cattleyae  

Han, Kyung-Sook (National Institute of Horticultural & Herbal Science, RDA.)
Lee, Seung-Don (Research Policy Bureau, RDA.)
Park, Jong-Han (National Institute of Horticultural & Herbal Science, RDA.)
Han, You-Kyoung (National Institute of Horticultural & Herbal Science, RDA.)
Kim, Dae-Hyun (National Institute of Horticultural & Herbal Science, RDA.)
Lee, Jung-Sup (National Institute of Horticultural & Herbal Science, RDA.)
Publication Information
Research in Plant Disease / v.15, no.3, 2009 , pp. 183-186 More about this Journal
Abstract
Leaf spot symptoms were observed in a commercial Palenopsis cultivated fields. Circular-elliptical watersoaked spots surrounded by a light green or yellow halo and turned to black when it was severe infection or blacken with gathered symptoms. These spots were finally enlarged to form of larger areas. Under the favorable conditions of temperature and moisture, the infection extended rapidly and dispersed to the crown and sometimes the infected plant became dead. A bacterial organism, isolated from the advancing margins of the lesions, was tested to characterize causing bacterium based on pathogenicity. The biochemical and physiological tests of that bacterium identified that as an Acidovorax avenae subsp. cattleyae. Therefore, we suggested to call that the new Phalaenopsis disease was bacterial brown spot caused by A.avenae subsp. cattleyae in Korea.
Keywords
Acidovorax avenae subsp. cattleyae; Orchid; Phalaenopsis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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