3Cooke D E L,Duncan J M.Phylogenetic analysis of Phytophthora species based on ITS1 and ITS2 sequences of the ribosomal RNA gene repeat[J].Mycological Research,1997,(101):667-677.
5Tooley P W,Bunyard B A.Development of PCR primers from internal transcribed spacer region 2 for detection of Phytophthora species infecting potatoes[J].Applied and environmental microbiology,1997,(4):1467-1475.
6Li X A,De Boer S H.Selection of polymerase chain reaction primers from an RNA intergenic spacer region for specific detection if Clavibacter michiganensis subsp.sepedonicum[J].Phytopathology,1995,(85):837-842.
7Pan Y B,Grisham M P,Burner D M,et al.A Polymerase chain reaction protocol for the detection of C.xyli subsp.xyli,the causal bacterium of sugarcane ratoon stunting disease[J].Plant Disease,1998,82(3):285-290.
8Maes M,Garbeva P,Kameon O.Recognition and detection in seed of the Xanthomonas pathogens that cause cereal leaf streak using rDNA spacer sequences and polymerase chain reaction[J].Phytopathology,1996,(86):63-69.
8Li X A, De Boer S H. Selection of polymerase chain reaction primers from an RNA intergenic spacer region for specific detection of Clavibacter michiganensis subsp.sepedorucum[J].Phytopathology,1995,85:837-842.
9Woese C R, Gutell R, Gupta R, et al. Detailed analysis of the higherorder structure of 16S-like ribosomal ribonucleic acids [J]. Microbiol.Rev., 1983, 47:621-669.
10Brosius J, Dull T J, Noller HF. Complete nucleotide sequeace of a 23S ribosomal RNA gene from Escherichia coli[J].Proc. Natl. Acad. Sci.USA, 1980, 77:201-204.
