TITLE

BACTERIAL BLIGHT AND PITH NECROSIS OF EGGPLANT IN TURKEY

AUTHOR(S)
Ustun, N.
PUB. DATE
July 2012
SOURCE
Journal of Plant Pathology;Jul2012, Vol. 94 Issue 2, p437
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In early February 2011 severe blight and stem necrosis symptoms on eggplants of cv. 1017 grafted onto root-stock AGR-01 F1 were observed in commercial green-houses in Fethiye (Mug ?la province, Aegean Turkey). Disease incidence was estimated to approach 10-12% in some greenhouses with poor air circulation and very high relative humidity. Symptoms started with water-soaking followed by blackening of large areas of the upper stem. Blighting progressed towards the petiole and midrib of the leaves, which later collapsed followed by dieback of the whole foliage. On some plants irregular brown to black stem lesions of different size developed which evolved in brown discoloration and necrosis of the pith. Fluorescent, Gram-negative, aerobic bacteria were consistently isolated from all damaged plant organs. Based on morphological, biochemical and pathogenicity tests, the bacterial strains isolated from infected leaf midribs, petioles, blighting stem and large stem lesions were identified as Pseudomonas cichorii and the strains isolated from necrotic pith and small stem lesions as P. viridiflava. This is the first report of bacterial blight and pith necrosis disease on eggplant differing from necrotic leaf spot or bacterial leaf blight and the first evidence for the presence of P. cichorii and P. viridiflava on this host plant in Turkey.
ACCESSION #
86442678

 

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