title: First Report of Foliar Blight on Dendropanax morbifera Caused by Alternaria panax.
abstract: Leaf spot and blight disease was observed on two-year-old seedlings of Dendropanax morbifera (Korean name: Hwangchil tree) during July of 2008 in Jindo Island, Korea. Symptoms included yellow-brown to dark brown irregularly enlarged spots frequently located along the veins of leaves. The lesions were often surrounded by chlorotic haloes. Severe leaf blight and subsequent defoliation occurred when conditions favored disease outbreak. The causal organism of the disease was identified as Alternaria panax based on morphological characteristics and sequence analysis of the internal transcribed spacer region of rDNA. A. panax isolates induced leaf spots and blight symptoms not only on D. morbifera but also on the other members of Araliaceae tested. This is the first report of foliar blight caused by A. panax on D. morbifera.
authors: Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 305-764, Korea.
authors: Jian Xin
authors: JX
authors: Deng
authors: Chang Sun
authors: CS
authors: Kim
authors: Eun Sung
authors: ES
authors: Oh
authors: Seung Hun
authors: SH
authors: Yu
keywords: Alternaria panax; Araliaceae; Dendropanax morbifera; Identification; Pathogenicity
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