Editor: Christoph Tebbe
Arbuscular mycorrhizal dynamics in a chronosequence of Caragana korshinskii plantations
Article first published online: 23 OCT 2008
© 2008 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved
FEMS Microbiology Ecology
Volume 67, Issue 1, pages 81–92, January 2009
How to Cite
Liu, Y., He, L., An, L., Helgason, T. and Feng, H. (2009), Arbuscular mycorrhizal dynamics in a chronosequence of Caragana korshinskii plantations. FEMS Microbiology Ecology, 67: 81–92. doi: 10.1111/j.1574-6941.2008.00597.x
- Issue published online: 9 DEC 2008
- Article first published online: 23 OCT 2008
- Received 30 March 2008; revised 17 July 2008; accepted 18 August 2008.First published online 23 October 2008.
- arbuscular mycorrhiza;
- Caragana korshinskii;
- denaturing gradient gel electrophoresis (DGGE);
- seasonal dynamics
Arbuscular mycorrhizal (AM) fungi in a chronosequence of 5–42-year-old Caragana korshinskii plantations in the semi-arid Loess Plateau region of northwestern China were investigated. AM fungi colonization, spore diversity and PCR-denatured gradient gel electrophoresis-based AM fungal SSU rRNA gene sequences were analyzed. AM fungi colonization [measured as the percent of root length (%RLC), vesicular (%VC) and arbuscular (%AC) colonization] and spore density were significantly correlated with sampling month, but not with plant age, except for %RLC. The percent of vesicular colonization was negatively correlated with soil total nitrogen and organic carbon, and spore density was negatively correlated with soil moisture and available phosphorus. Ten distinguishable AM fungal spore morphotypes, nine Glomus and one Scutellospora species, were found. Nine AM fungal Glomus phylotypes were identified by sequencing, but at each sampling time only four to six AM fungal phylotypes were detected. The AM fungal community was significantly seasonal, whereas the AM fungal species richness did not increase with plantation age. A significant change in AM fungal colonization and community composition over an annual cycle was observed in this study, and our results suggest that the changes of AM are the product of the interaction between host phenology, soil characteristics and habitat. Understanding these interactions is essential if habitat restoration is to be effective.