Chin J Plant Ecol ›› 2018, Vol. 42 ›› Issue (2): 252-260.DOI: 10.17521/cjpe.2017.0138

• Research Articles • Previous Articles    

Eco-geographical distribution of arbuscular mycorrhizal fungi associated with Hedysarum scoparium in the desert zone of northwestern China

LIU Hai-Yue,LI Xin-Mei,ZHANG Lin-Lin,WANG Jiao-Jiao,HE Xue-Li()   

  1. College of Life Sciences, Hebei University, Baoding, Hebei 071002, China
  • Online:2018-02-20 Published:2018-04-16
  • Contact: Xue-Li HE
  • Supported by:
    Supported by the National Natural Science Foundation of China(31470533)


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.

Important findings 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 were different, and those of the same species in different sites were also different. Soil organic matter, pH,ammonia, and available phosphorus had significant effects on AM fungi. The results showed that the species diversity and distribution of AM fungi have obvious spatial patterns, and were influenced by soil factors, among which soil moisture was the most significant factor.

Key words: arbuscular mycorrhizae fungi, species diversity, spatial distribution, Hedysarum scoparium, desert zone of northwestern China