Biodiv Sci ›› 2009, Vol. 17 ›› Issue (5): 506-511.DOI: 10.3724/SP.J.1003.2009.09020

• Editorial • Previous Articles     Next Articles

Diversity of arbuscular mycorrhizal fungi associated with a desert plant Artemisia ordosica

Weihua Qian, Xueli He()   

  1. College of Life Sciences, Hebei University, Baoding, Hebei 071002
  • Received:2009-01-16 Accepted:2009-07-17 Online:2009-09-20 Published:2009-09-20
  • Contact: Xueli He

Abstract:

To elucidate the diversity of arbuscular mycorrhizal (AM) fungi associated with the common desert plant Artemisia ordosica, we sampled, in April 2007, the following four representative sites in the Mu Us Sandland and Tengger Desert regions: Yulin Psammophyte Garden (Yulin), Yanchi Desert Shrub Garden (Yanchi), Ordos Sandland Ecological Research Station (Research Station), and Shapotou Desert Research and Experiment Station (Shapotou). We collected soil samples from the rhizosphere ofA. ordosica and divided them into five depth intervals, each 10 cm, to 50 cm depth. A total of 28 AM fungal species from four genera were isolated. Of these, 16 species belonged to Glomus, 7 to Acaulospora, 4 to Scutellospora and 1 toDiversispora. Glomus mosseae was the dominant species. Acaulospora bireticulata andG. reticulatum were common species (>25% frequency of occurence) andG. constrictum was rare species (≤25% frequency of occurence) at the four sampling sites.Glomus geosporum was found only in Yanchi, G. melanosporum only in Yulin and A. mellea, A. lacunosa, G. coremioides and G. magnicaule occurred only in Research Station. Richness of AM species was highest in Yanchi and Research Station and spore density was highest in Yulin. Species richness and spore density were the lowest in Shapotou. Generally, spore density, isolation frequency, relative abundance and importance value followed the trend Glomus > Acaulospora > Paraglomus > Diversispora. Our results are the first to assess the considerable diversity of arbuscular mycorrhizal fungi found in association with Artemisia ordosica. Further research should concentrate on understanding the dynamics of these relationships.

Key words: Artemisia ordosica, Mu Us Sandland, Tengger Desert, spore density, importance value