NWIPB OpenIR
The effect of slope aspect on the phylogenetic structure of arbuscular mycorrhizal fungal communities in an alpine ecosystem
Chai, Yuxing; Jiang, Shengjing; Guo, Wanji; Qin, Mingsen; Pan, Jianbin; Bahadur, Ali; Shi, Guoxi; Luo, Jiajia; Jin, Zhongcai; Liu, Yongjun; Zhang, Qi; An, Lizhe; Feng, Huyuan
2018
Source PublicationSOIL BIOLOGY & BIOCHEMISTRY
Volume126
AbstractSlope aspect not only modifies microclimate and soil-forming processes, but also significantly influences biogeographical patterns of species and multiple ecosystem functions across terrestrial landscapes. However, the effect of slope aspect on arbuscular mycorrhizal (AM) fungi, a group of functionally important root-associated microorganisms, remains poorly understood. In this study, we investigated AM fungal communities in an alpine ecosystem on a northwest-facing slope (NS) and a southeast-facing slope (SS) along a steep environmental gradient. Ecological processes structuring the fungal communities were inferred according to phylogenetic patterns and species abundance distributions. Thirty-two distinct AM fungal virtual taxa (VTs) were identified, predominantly belonging to the genus Glomus. The change of slope aspect from SS to NS recorded a significant decline in AM fungal richness, resulting in a marked loss of Glomus VTs and the dominance of Rhizophagus. Moreover, both taxonomic and phylogenetic composition of AM fungal communities significantly varied between the two slope aspects, this being largely driven by niche partitioning based on microclimate, soil pH and plant species composition. The influence of geographical distance was negligible. AM fungal communities were phylogenetically clustered on SS and random on NS, suggesting that the central process structuring communities shifted from a niche-dominated filter to the combination of competitive exclusion and a niche filter. Similarly, AM fungal species abundance distribution showed the best fit with the Lognormal model on SS and the Zipf-Mandelbrot model on NS, indicating that community dynamics on both slopes were also in accordance with niche-based mechanisms.
KeywordSoil microbial community Slope aspect Phylogenetic structure Ecological process Environmental filtering Competition
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/59948
Collection中国科学院西北高原生物研究所
Recommended Citation
GB/T 7714
Chai, Yuxing,Jiang, Shengjing,Guo, Wanji,et al. The effect of slope aspect on the phylogenetic structure of arbuscular mycorrhizal fungal communities in an alpine ecosystem[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,126.
APA Chai, Yuxing.,Jiang, Shengjing.,Guo, Wanji.,Qin, Mingsen.,Pan, Jianbin.,...&Feng, Huyuan.(2018).The effect of slope aspect on the phylogenetic structure of arbuscular mycorrhizal fungal communities in an alpine ecosystem.SOIL BIOLOGY & BIOCHEMISTRY,126.
MLA Chai, Yuxing,et al."The effect of slope aspect on the phylogenetic structure of arbuscular mycorrhizal fungal communities in an alpine ecosystem".SOIL BIOLOGY & BIOCHEMISTRY 126(2018).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chai, Yuxing]'s Articles
[Jiang, Shengjing]'s Articles
[Guo, Wanji]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chai, Yuxing]'s Articles
[Jiang, Shengjing]'s Articles
[Guo, Wanji]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chai, Yuxing]'s Articles
[Jiang, Shengjing]'s Articles
[Guo, Wanji]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.