Comparative colonisation by virulent versus avirulent Pyricularia oryzae on wild Oryza australiensis |
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| Authors: | Dolar Pak Ming Pei You Vincent Lanoiselet Martin J. Barbetti |
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| Affiliation: | 1.UWA School of Agriculture and Environment, Faculty of Science,The University of Western Australia,Crawley,USA;2.The UWA Institute of Agriculture, Faculty of Science,The University of Western Australia,Crawley,USA;3.Department of Agriculture and Food Western Australia,Baron-Hay Court,South Perth,Australia |
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| Abstract: | Pyricularia oryzae (rice blast) conidial development at pre-penetration stage determines success or otherwise of infection inside the rice host plants. Studies on conidial germination and growth on the leaf surface in commercial rice (Oryza sativa) report differently, dependent upon host type and level of blast resistance. Although wild rice (O. australiensis) is known to be an alternative host of blast, the interaction between P. oryzae conidia and wild O. australiensis on its leaf surface has not been previously studied. We found significant (P?P?P?P?P?P?O. australiensis was significantly (P?O. sativa for both virulent and avirulent P. oryzae at 12 hpi, a clear indication that host type influences the extent of appressoria formation. |
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