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http://dx.doi.org/10.5423/RPD.2003.9.4.213

Occurrence of Brown Blight of Tea Plant Caused by Pseudomonas syringae pv. theae in Korea  

Choi, Jae-Eul (Chungnam National University)
Cha, Sun-Kyung (Chungnam National University)
Ryuk, Jin-Ah (Chungnam National University)
Choi, Chun-Hwan (Chungnam National University)
Nou, Ill-Sup (Suncheon National University)
Publication Information
Research in Plant Disease / v.9, no.4, 2003 , pp. 213-216 More about this Journal
Abstract
A bacterial disease of tea plants(Camellia sinensis L.) was found in the graftage nursery grown under vinyl house conditions in Suncheon city, Korea, in spring of 2002. The primary symptoms of the disease include small, water-soaked and dark brown spot development on the young leaves. This spot gradually increases in size, especially taking on elongate shape along the midrib or vein of the leaf, and then turns black. The diseased leaves were defoliated easily. Ten strains were isolated from the infected leaf. Inoculation on tea leaf with these isolates produced the same symptoms of naturally infected plants. On the basis of stain reactions, morphological characterization, colony pattern, physiological and biochemical reactions, the bacterium was identified as Pseudomonas syringae pv. theae. This is the first report of brown blight of tea plant in Korea.
Keywords
tea plant; Camellia sinensis; Pseudomonas syringae pv. theae; brown blight;
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