Overexpression of rice OsLOL2 gene confers disease resistance in tobacco to Pseudomonas syringae pv. Tabaci |
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Authors: | Khizar Hayat Bhatti Chunxiao Xu Jiahe Wu Chaozu He |
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Abstract: | LSD1-related proteins of Arabidopsis with LSD1-like zinc finger domains regulate disease resistance and programmed cell death(PCD). We cloned a rice OsLOL2 gene, orthologous to LSDI of Arabidopsis and expressed it in a tobacco plant. Transgenic tobacco lines displayed enhanced disease resistance to a virulent bacterium Pseudomonas syringae pv. tabaci (Pst). RT-PCR analysis showed that overexpression of OsLOL2 in transgenic tobacco lines resulted in upregulation of two pathogenesis-related (PR) protein genes, PR2 and PR5. Our results suggest that overexpression of OsLOL2 in transgenic tobacco enhances the resistance through the induction of PR pro-teins and hypersensitive response-like reaction. |
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Keywords: | OsLOL2 Zinc finger protein/domain Hypersensitive response (HR) Pseudomonas syringae pv tabaci Disease resistance |
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