西北荒漠带花棒根际丛枝菌根真菌生态地理分布
刘海跃;李欣玫;张琳琳;王姣姣;贺学礼
【期刊名称】《植物生态学报》 【年(卷),期】2018(042)002
【摘要】Aims To understand the ecological significance of arbuscular mycorrhizal (AM) fungi associated with Hedysarum scoparium in semi-arid and arid lands,species diversity and ecological distribution of AM fungi associated with Hedysarum scoparium were elucidated in a desert ecosystem of northwestern China.Methods Soil samples (0-30 cm depth) under Hedysarum scopariumis were collected at seven different sites (Ordos,Wuhai,Dengkou,Alxa,Shapotou,Minqin,Anxi) in northwest China in July 2015.Based on the morphological characteristics of spores,AM fungi were identified,and redundancy analysis (RDA) was used to distinguish among different groups.Furthermore,the relationship between species diversity of AM fungi and soil factors were evaluated by Pearson's correlation analysis.Importantfindings A total of 42 AM fungal species belonging to six genera were isolated.Among these,16 species
belong
to
Glomus,17
to
Acaulospora,four
to
Claroideoglomus,two to Septoglomus,two to Funneliformis and one to Scutellospora.The abundance,spore density and Shannon-Wiener index of AM fungi decreased gradually along the aridity gradient from east to west.Spore density of AM fungi of different species in the same site
西北荒漠带花棒根际丛枝菌根真菌生态地理分布
