2. Materials and methods
2.1. Strains, plasmids and culture conditions
F. oxysporumstrain F-H.SY0975 isolated from cucumber.
Escherichia coli strain DH5a (procured from Takara program) was used in the construction and transformation of recombinant plasmids. All clonings were done using E. coli strain DH5a grown at 37 C in Luria broth (Sambrook et al.,1989) liquid media supplemented with 100 mg/ml ampicillin or chloramphenicol, and on plates solidified with 1.5% agar. Plasmid PBC-hygro stored in E. coli(procured from Biovector
Science Lab), plasmid pEGFP(containinggfpgene) stored in E. coli. pEGFP and PBC-hygro were extracted using plasmid Mini kit(OMEGA, D6943–01). E. coli strain Trans 109 was used for F.oxysporumtransformations (procured from Takara program).