Linkages between changes in plant and mycorrhizal fungal community composition at high versus low elevation in alpine ecosystems
文献类型： 外文期刊
作者： Li, Xiaoliang 1 ; Xu, Meng 3 ; Li, Xiaolin 4 ; Christie, Peter 4 ; Wagg, Cameron 5 ; Zhang, Junling 4 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Hainan, Peoples R China
2.Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhanceme, Haikou 571101, Hainan, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
4.China Agr Univ, Ctr Resources Environm & Food Secur, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
5.Agr & Agri Food Canada, Fredericton Res & Dev Ctr, Fredericton, NB E3B 4Z7, Canada
期刊名称：ENVIRONMENTAL MICROBIOLOGY REPORTS （ 影响因子：3.541； 五年影响因子：3.933 ）
ISSN： 1758-2229
年卷期： 2020 年 12 卷 2 期
页码：
收录情况： SCI
摘要： Arbuscular mycorrhizal fungi (AMF) play an important role in maintaining plant diversity and productivity in grassland ecosystems. However, very few studies have investigated how AMF and plant communities co-vary between contrasting environments in natural ecosystems. Intensive sampling (50 soil samples) was conducted in natural open grasslands at both 3570 and 4556 m on Mount Segrila on the Southeast Tibetan Plateau. We used 454-pyrosequencing to investigate soil AMF communities and to explore relationships between AMF diversity and plant richness, productivity and community composition. AMF diversity was negatively correlated with plant richness at 3570 m but positively at 4556 m. Differences in AMF community composition between elevations were attributable to plant community composition, soil pH and available phosphorus concentration. The AMF community was more phylogenetically clustered at the higher elevation than the lower elevation. However, greater phylogenetic clustering (under dispersion) of AMF communities at the two elevations was positively correlated with above-ground biomass. Our results indicate that plant community composition and environmental filtering are the primary drivers structuring the AMF community. Phylogenetic relatedness may be important in explaining the function of AMF communities in alpine ecosystems.
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