It suggested that endophyte of pine tree would be the main pathogenic factor of the disease, and PWN was one of irritative factors.
这说明植物内生菌是导致松材线虫病的内因，松材线虫是激发因子之一。
"PWN"Golden Mandheling is produced in SIDIKALANG unit that beside the TOBA Lake, with the planting altitude between 1500 ft to 2000 ft.
的黄金曼特宁产区位于TOBA湖旁边的SIDIKALANG，海拔1500公尺到2000公尺，颗粒较大，经过三次的手工筛选。
The resistance of pine to the PWN is evidently different in different species, and the resistance difference among the geographical population depends on the pine species.
在松树对松材线虫的抗性方面，树种之间抗性的差异性较显著，而同种松树不同地理种源之间抗性的差异性的显著程度因树种而异。
At present, symbiotic or parasitic bacteria were reported to be associated with many plant pathogenic nematodes, but the relationship between PWN and its associated bacteria was not understood.
目前，许多植物病原线虫都报道有伴生细菌，它们之间属于共生或者寄生关系，而松材线虫与其伴生细菌的关系还有待研究。
At present, symbiotic or parasitic bacteria were reported to be associated with many plant pathogenic nematodes, but the relationship between PWN and its associated bacteria was not understood.
目前，许多植物病原线虫都报道有伴生细菌，它们之间属于共生或者寄生关系，而松材线虫与其伴生细菌的关系还有待研究。
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