草业学报2016，Vol.25Issue(4)：140-148,9.DOI:10.11686/cyxb2015308
内生真菌对醉马草根际土壤线虫群落的影响
Effect of the Epichloё endophyte on the soil nematode community in the rhizosphere of Achnatherum inebrians
摘要
Abstract
The aim of this study was to determine the effect of the Epichloё endophyte on soil nematodes and their community characteristics in the rhizosphere of Achnatherum inebrians .Soil nematodes were isolated and identified from the rhizosphere of A.inebrians plants grown with (E+)or without (E-)the Epichloёendo-phyte.A total of 11889 soil nematodes were collected,belonging to 37 genera,22 families,six orders,and two classes.The individual density of soil nematodes was higher in soil of E+ plants than in soil of E- plants. The generic number,Shannon-Wiener index,Pielou index,and Margalef index were lower in E+ soil than in E- soil,whereas the diversity index did not differ significantly between the two treatments.The results sug-gested that the Epichloёendophyte had a limited effect on the diversity of soil nematodes of A.inebrians .The maturity index (MI )of soil nematodes was significantly higher in the E+ soil than in the E- soil,whereas the plant parasite index (PPI )and PPI/MI were significantly lower in the E+ soil than in the E- soil.The pres-ence of the Epichloёendophyte had a significant effect on MI ,PPI ,and PPI/MI .These results show that the Epichloёendophyte can change the composition of functional groups of soil nematodes,especially that of plant-parasitic nematodes.关键词
醉马草/内生真菌/土壤线虫/多样性Key words
Achnatherum inebrians/Epichloёendophyte/soil nematodes/diversity引用本文复制引用
郭长辉,李秀璋,柳莉,曹建新,李春杰..内生真菌对醉马草根际土壤线虫群落的影响[J].草业学报,2016,25(4):140-148,9.基金项目
国家重点基础研究发展计划（973项目）课题（2014CB138702），长江学者和创新团队发展计划（IRT13019）资助。 （）
