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KMID : 1160220200480060495
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Mycobiology
2020 Volume.48 No. 6 p.495 ~ p.500
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Occurrence and Characterization of Leaf Spot Caused by Septoria melissae on Lemon Balm in Korea
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Yang Seon-Ah
Choi In-Young
Ju Ho-Jong
Lee Kui-Jae
Galea Victor
Shin Hyeon-Dong
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Abstract
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Leaf spot on lemon balm is frequently observed in Korea, causing considerable damage to crops. In 2014 and 2015, the occurrence of leaf spot was observed in several production greenhouses at Suwon, Gongju, and Namwon in Korea. Symptoms on lower leaves initially developed as small, distinct, discolored lesions, which enlarged progressively turning into dark brown, angular spots surrounded by purplish-brown margins. Based on the morphological characteristics and sequence analysis of actin (ACT), translation elongation factor 1-alpha (EF-1α), internal transcribed spacer (ITS), 28S nrDNA (LSU), and RNA polymerase II second largest subunit (RPB2), the fungus associated with the lemon balm leaf spot was determined as Septoria melissae. To the best of our knowledge, this is the first report of lemon balm leaf spot caused by S. melissae in Asia as well as in Korea.
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KEYWORD
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First report, medicinal plant, Melissa officinalis, multigene phylogenetic analysis, Septoria melissae
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