Construction and characterization of a copy number-inducible fosmid library of Xanthomonas oryzae pathovar oryzae MAFF311018 |
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Authors: | Hiroyuki Ichida Xiaoying SunSuguru Imanaga Yasuhiro ItoKatsuyoshi Yoneyama Shigeru KuwataShuichi Ohsato |
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Affiliation: | School of Agriculture, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan |
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Abstract: | A fosmid library of Xanthomonas oryzae pathovar oryzae MAFF311018 (T7174), the causative agent of bacterial blight on rice, was constructed and characterized. The average fosmid library insert size was > 34 kb, and 967 clones were uniquely positioned on its sequenced genome. The entire Xoo MAFF311018 genome was covered by end-sequenced clones with at least 5 kb of overlap. The fosmid vector contains both the single-copy Escherichia coli fertility factor origin, which enhances fosmid stability, and the multi-copy IncPα origin, allowing amplification of copy number upon induction with l-arabinose. Real-time quantitative PCR on 12 randomly picked fosmid library clones determined that fosmid copy number increased 8- to 58-fold after 5 hour induction. This library provides a new resource for complementation experiments and systematic functional studies in Xoo and related species. |
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