First report of leaf spot on lettuce caused by Curvularia aeria
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In 2017, leaf spots were found on lettuce growing in fields in Songkhla Province, southern Thailand. The fungus isolated from the spot lesions on the leaves was identified as Curvularia aeria (Bat., J.A.Lima and C.T.Vasconc.) Tsuda based on morphological characteristics and DNA sequences of the ITS region of the rRNA gene. After a conidial suspension of the isolate was sprayed on lettuce seedlings, the leaf spots developed on lettuce seedlings, and the fungus was reisolated; leaves of plants inoculated with water did not develop spots. This is the first report of C. aeria causing leaf spot on lettuce.
KeywordsCurvularia Identification Lactuca sativa Leaf spot Lettuce New host Pathogenicity
This work was performed as collaborative research in the Core to Core Program, which was supported by the Scientific Cooperation Program as agreed by the Japan Society for the Promotion of Science (JSPS), the National Research Council of Thailand (NRCT), and universities involved in the program. The authors acknowledge the Prince of Songkla University for funding (Grant no. NAT610511N) and facilities.
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