doi: 10.4489/KJM.520106 Citation BibTeX RIS Mendeley

First Report of Anthracnose Caused by Colletotrichum sojae on Peanut in Korea

First Report of Anthracnose Caused by Colletotrichum sojae on Peanut in Korea

• Shinhwa Kim (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)
• Soo Yeon Choi (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)
• Hyunjung Chung (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)
• Nak Jung Choi (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)
• Bo Yoon Seo (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)
• Sang-Min Kim (National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea)

In August 2023, a leaf spot disease was observed on peanut in Cheongju-si, Korea. The leaf spots occurred at the leaf margins, and then the lesion expanded gradually. The diseased leaf areas were light or dark brown and irregular in shape. A fungal isolate was obtained from symptomatic leaf and identified as a Colletotrichum sojae based on morphological characteristics and phylogenetic analysis of the internal transcribed spacers, glyceraldehyde3-phosphate dehydrogenase, chitin synthase-1, actin, β-tubulin genes. Pathogenicity test were performed on the peanut seedling with conidial suspension (1×106 conidia/mL). Lesions were observed on peanut leaf 5 days after inoculation. The pathogen was re-isolated from the lesions of inoculated leaf. To our knowledge, this is the first report of anthracnose on peanut caused by C. sojae in Korea.