1. Genome-wide identification of pathogenicity genes in Xanthomonas oryzae pv. oryzae by transposon mutagenesis.
- Author
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Wang, J. C., So, B. H., Kim, J. H., Park, Y. J., Lee, B. M., and Kang, H. W.
- Subjects
TRANSPOSONS ,MOBILE genetic elements ,BACTERIAL blight of peas ,PEA diseases & pests ,BACTERIAL diseases of plants ,SOUTHERN blot ,XANTHOMONAS ,RICE ,CULTIVARS - Abstract
A transposon mutant library was constructed from the bacterial blight pathogen Xanthomonas oryzae pv . oryzae ( Xoo) KACC10331 by Tn5 transposon mutagenesis. The susceptible rice cultivar Milyang 23 was inoculated with a total of 24 540 mutants resistant to kanamycin and 67 avirulent or reduced-pathogenicity mutant strains were selected for study. Southern hybridization verified that 84 mutant strains had single-copy insertions and their single-transposon insertion sites were identified by sequencing analysis combined with thermal asymmetric interlaced (TAIL)-PCR. The single-transposon-tagged sequences of 21 mutant strains belonged to pathogenicity-related genes previously reported in Xanthomonas species, while the other 46 single-transposon-tagged sequences included diverse functional genes encoding, five cell-wall-degrading enzymes, three fimbrial and flagella assembly regulators, five regulatory proteins, 15 metabolic regulators and 18 hypothetical proteins, which were identified as novel pathogenicity genes of Xoo. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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