Banding patterns produced from RAPD-PCR amplification with primer 17 on DNA. Lanes: 1, Leptosphaeria sp. isolated from S. castanea spores; 2, 3, 8, and 9, P. lingam aggressive isolate; 4, 5, 12, and 13, P. lingam nonaggressive isolate; 6, P. lingam PhTrZgg; 7, P. nigrificans; 10 and 11, P. lingam Thlaspi; 14, P. lingam Sisymbrium; 15, P. lingam Erysimum; 16, P. lingam Lepidium; 17, C. concentricum; 18, V. dahliae; 19, S. sclerotiorum.