草业学报2017，Vol.26Issue(12)：160-169,10.DOI:10.11686/cyxb2017071
磷添加条件下摩西球囊霉与禾草内生真菌对多年生黑麦草生长的影响
Effects of Glomus mosseae and grass endophytes on the growth of Lolium perenne under phosphorus addition
摘要
Abstract
This study aimed to determine the effects of arbuscular mycorrhizae fungi Glomus mosseae and grass endophytes on the growth,nutrient absorption and phosphatase activities of Lolium perenne without phosphorus addition (P0) and with 50 mg/kg phosphorus addition (P50).Seeds of perennial ryegrass infected with grass endophyte (E+) and without grass endophyte (E-) were used to establish plants with and without the endophytes.The results showed that:1) AM fungi and grass endophytes had significant effects on the host biomass (P＜0.05);plants infected by both AM fungi and grass endophytes (AME+) had the lowest biomass.Plants infected by only Glomus mosseae had the highest biomass under P0,while plants free of the two symbiosis fungi reached their highest biomass under P50.2) Phosphorus addition increased mycorrhizal colonization of perennial ryegrass by 11.40％,while infection with grass endophytes inhibited plant mycorrhizal colonization by 18.65％ and 11.77％ under P0 and P50 respectively.3) G.mosseae had no significant effect on the absorption of P (P＜0.05).Grass endophytes increased the content of total N,while AM colonization decreased the total N of plants with grass endophytes.4) Phosphorus addition significantly increased phosphatase activities (P＜ 0.05).Plants infected by AM fungi and grass endophytes had the highest phosphatase activities across the treatments.Each of the two symbiosis fungi improved plant growth when taken alone;however,they showed competition on photosynthate and did not enhance plant growth and nutrition absorption when applied together.关键词
AM真菌/禾草内生真菌/磷添加/多年生黑麦草Key words
arbuscular mycorrhizal fungi/grass endophyte/phosphorus addition/Lolium perenne引用本文复制引用
郭艳娥,王晓瑜,高萍,段廷玉..磷添加条件下摩西球囊霉与禾草内生真菌对多年生黑麦草生长的影响[J].草业学报,2017,26(12):160-169,10.基金项目
国家绿肥产业技术体系(CARS-22),中央高校基本科研业务费(2022016zr0003)和教育部创新团队发展计划项目(IRT_17R50)资助. （CARS-22）
