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介绍了长期流行的松萎蔫病的单病原学说及其在解释松萎蔫病病理机制、新的实验结果等方面面临的困难。根据多项实验结果作者提出松萎蔫病是由松材线虫与其携带的致病细菌引起的复合侵染新假说。在此基础上,发现松材线虫与其致病细菌间的互惠共生现象、分离、鉴定致病细菌产生的鞭毛蛋白及其他毒素、松萎蔫病由细菌毒素导致萎蔫致死的致病机理等新进展。阐述了松萎蔫病致病新学说在研究松萎蔫病致病机理及测报、防控、抗病育种等方面新方向。
The monologial theory of long-term pine wilt disease and its difficulties in explaining the pathological mechanism of pine wilt disease and new experimental results were introduced. According to a number of experimental results, the authors propose that the wilt disease is a new hypothesis of composite infection caused by the pine wood nematode and the pathogenic bacteria it carries. On this basis, we found the mutualism between pine wood nematode and its pathogenic bacteria, isolated and identified flagellin and other toxins produced by pathogenic bacteria, and the new pathogenic mechanism of wilt disease caused by wilt disease. The new theory of pathogenicity of pine wilt disease is described in this paper. It is a new direction in the study of pathogenic mechanism of pine wilt disease and its reporting, prevention and control, disease resistance breeding and so on.