中文摘要：

深色有隔内生真菌是针叶树种根际微生物的主要类群, 在与宿主植物互作过程中可发挥促生抗逆的作用, 该文通过测定樟子松苗木生物量、 抗逆生理指标及立枯病发生率, 探讨深色有隔内生真菌D340 Phialocephalahelvetica接种后对樟子松生长及抗病性的影响.结果表明： 苗高、 地径、 鲜重和干重比对照分别提高9.15%、 5.81%、 12.9%和23.23%.立枯丝核菌诱导处理后, 接种深色有隔内生真菌的樟子松苗木保护酶CAT、 POD和SOD酶活性分别比对照提高26.22%, 22.74%和7.31%, 丙二醛含量降低19.51%, β-1,3-葡聚糖酶和几丁质酶活性分别提高27.85%和8.69%.

英文摘要：

The dark septate endophyte（DSE）fungi is main rhizosphere microorganism groups of coniferous species,and play an important role in growth promote and stress resistance to host.Seedling biomass,physiological index of disease resistance and the incidence of damping off weremeasured to research the growth promotion and disease resistant of Pinus sylvestris var.Mongolica inoculated by dark septate endophyte fungiD340. The results indicated that：comparedwith the control,the seedling height,ground diameter, fresh and dry weight were increased 9.15%,5.81%,12.9% and 23.23% respectively.The seedling CAT,POD and SOD enzyme of Pinus sylvestris var. Mongolica inoculated by dark septate endophyte fungi D340 were increased 26.22%,22.74% and 7.31%,the MDAcontent was decreased 19.51%,and the β-1,3-glucanase and chitinase activity were increased 27.85% and 8.69% in contrast to control.