Molecular biological study on the pathogenic nematode-host plant interactions at the early stage of pine wilt disease

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Pine wilt disease is an infectious forest disease caused by the pathogenic pine wood nematode, Bursaphelenchus xylophilus. To elucidate the pathogenic mechanism of the disease, the interaction between the nematode and host pine at an early stage was investigated, by means of molecular biological techniques. The proteomic analyses determined the profile of surface-coat proteins and secreted proteins of the nematode, and cDNA subtraction analysis determined several genes involved in the host responses. Results obtained indicate that the pine wood nematode has a kind of system to defeat host defense responses.