Characterization of Fusarium oxysporum Isolated from Paprika in Korea
2007
Cha, S.D. (Dankook University, Cheonan, Republic of Korea) | Jeon, Y.J. (Dankook University, Cheonan, Republic of Korea) | Ahn, G.R. (Dankook University, Cheonan, Republic of Korea) | Han, J.I. (Dankook University, Cheonan, Republic of Korea) | Han, K.H. (Woosuk University, Wanju, Republic of Korea) | Kim, S.H. (Dankook University, Cheonan, Republic of Korea), E-mail: [email protected]
In the present study we first report in Korea the identification and characterization of Fusarium oxysporum isolated from rotten stems and roots of paprika (Capsicum annuum var. grossum) at Masan, Kyungsangnamdo in 2006. The fungal species produced white aerial mycelia accompanying with dark violet pigment on PDA. The optimal temperature and pH for the growth of the species was 25℃ and pH 7, respectively. Microscopic observation of one of isolates of the species shows that its conidiophores are unbranched and monophialides, its microconidia have oval-ellipsoidal shape with no septate and are of 3.0~11 × 1.5~3.5 ㎛ sizes, its macroconidia are of 15~20 × 2.0~3.5 ㎛ sizes and have slightly curved or slender shape with 2~3 septate. The results of molecular analysis show that the ITS rDNA of F. oxysporum from paprika shares 100% sequence identity with that of known F. oxysporum isolates.
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