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- Title
Arbuscular mycorrhizal fungal communities show low resistance and high resilience to wildfire disturbance.
- Authors
Xiang, Xingjia; Gibbons, Sean; Yang, Jian; Kong, Jianjian; Sun, Ruibo; Chu, Haiyan
- Abstract
Aims: Wildfires are important disturbances that help to shape the structure and function of forest ecosystems, and arbuscular mycorrhizal fungi (AMF) are key players in the post-fire recovery of soils and understory vegetation. We aimed to investigate the response of AMF communities to wildfire over different timescales. Methods: Primer set AMV4.5NF/AMDGR was used to amplify soil 18S rRNA gene fragments for the 454 GS-FLX pyrosequencing platform to examine belowground AMF communities 1 and 11 years following low- and high-intensity wildfires in the Greater Khingan Mountains of China. Results: The majority of AMF sequences detected were annotated as Glomeraceae, Claroideoglomeraceae, Diversisporaceae and Acaulosporaceae. Both AMF community composition and alpha-diversity were correlated with herbaceous and shrubby biomass, available phosphorus (AP) and NH, which were in turn altered by wildfire. AMF community composition, alpha-diversity, and phylogenetic structure were significantly altered 1-year-post-fire. However, AMF communities were indistinguishable from unburned forest soils 11-year-post-fire. Conclusions: Our results indicated that AMF communities are resilient to wildfire on decadal timescales. This resilience appears to depend on the post-fire regrowth of understory vegetation and the subsequent recovery of soil chemical properties.
- Subjects
VESICULAR-arbuscular mycorrhizas; FUNGAL communities; FOREST fire ecology; FOREST resilience; EFFECT of fires on soils; UNDERSTORY plants
- Publication
Plant & Soil, 2015, Vol 397, Issue 1/2, p347
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1007/s11104-015-2633-z