Occurrence of Tan-brown Leaf Spot Caused by Pilidium concavum on Fragaria ananassa in Korea

Mi-Jeong  Park1,*   Chang-Gi  Back1   Jong-Han  Park1   Kyung-Sook  Han2   

1Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science
2Urban Agricultural Research Division, National Institute of Horticultural and Herbal Science

Abstract

In 2015, a new leaf spot disease was observed on strawberry seedlings in Wanju, Korea. Tanned brown spots appeared on the leaves of the infected plants, and often coalesced to form larger necrotic areas, resulting in the death of foliage. An isolate was obtained in pure culture. On the basis of morphological characteristics and molecular analysis of internal transcribed spacer rDNA sequence, the causal agent was identified as Pilidium concavum. Pathogenicity tests revealed the isolate was pathogenic to the leaves and fruits of strawberry. To the best of our knowledge, this is the first report of P. concavum causing tan-brown leaf spot on strawberry in Korea.

Acknowledgements

This work was carried out with the support of the “Cooperative Research Program for Agriculture Science & Technology Development (Project No. PJ01136802)” Rural Development Administration, Republic of Korea.

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