期刊
NEW PHYTOLOGIST
卷 205, 期 4, 页码 1598-1607出版社
WILEY
DOI: 10.1111/nph.13224
关键词
18S rRNA; arbuscular mycorrhizas; atmospheric change; free air concentration enrichment (FACE); Glomeromycota; microbial diversity; soil fungi; temporal dynamics
资金
- Biotechnology and Biological Sciences Research Council (BBSRC) studentship [BB/D527026/1]
- Worldwide Universities Network (WUN)
- US Department of Energy, Office of Science, Office of Biological and Environmental Research, Climate and Environmental Sciences Division [DE-AC02-06CH11357]
- BBSRC [BB/D527026/1] Funding Source: UKRI
Understanding the natural dynamics of arbuscular mycorrhizal (AM) fungi and their response to global environmental change is essential for the prediction of future plant growth and ecosystem functions. We investigated the long-term temporal dynamics and effect of elevated atmospheric carbon dioxide (CO2) and ozone (O-3) concentrations on AM fungal communities. Molecular methods were used to characterize the AM fungal communities of soybean (Glycine max) grown under elevated and ambient atmospheric concentrations of both CO2 and O-3 within a free air concentration enrichment experiment in three growing seasons over 5yr. Elevated CO2 altered the community composition of AM fungi, increasing the ratio of Glomeraceae to Gigasporaceae. By contrast, no effect of elevated O-3 on AM fungal communities was detected. However, the greatest compositional differences detected were between years, suggesting that, at least in the short term, large-scale interannual temporal dynamics are stronger mediators than atmospheric CO2 concentrations of AM fungal communities. We conclude that, although atmospheric change may significantly alter AM fungal communities, this effect may be masked by the influences of natural changes and successional patterns through time. We suggest that changes in carbon availability are important determinants of the community dynamics of AM fungi.
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