Watermelon (Citrullus lanatus) is one of the most economically important cucurbitaceous crop over the world. Anthracnose disease caused by Colletotrichum orbiculare, result to severe damage to cucurbits worldwide. Anthracnose is a typical plant disease which significantly affecting the yield of cucurbit crop. Pathogeneis-related (PR) proteins are well-known plant defense proteins against pathogens. Therefore, we observed PR genes expression patterns when watermelon got anthracnose disease. We did RT-PCR experiment to evaluate differences of PR genes expression pattern among Au-Producer(R), one of the representative of resistance watermelon varieties against anthracnose, and 920533(S), one of the representative of susceptible watermelon varieties against anthracnose. As a result, there were differences of the expression of several PR genes between the R and S watermelon. Analysis of the function of these genes is expected to perform in the future.

• Yun-Chan Huh(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
• Woo-Moon Lee(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
• Yul-Kyun Ahn(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
• Do-Sun Kim(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
• Hye-Eun Lee(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) Corresponding Author
• Soo Jin Kim(Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)