Large elevation and small host plant differences in the arbuscular mycorrhizal communities of montane and alpine grasslands on the Tibetan Plateau

文献类型： 外文期刊

第一作者： Li, Xiaoliang

作者： Li, Xiaoliang;Xu, Meng;Christie, Peter;Li, Xiaolin;Zhang, Junling

作者机构：

关键词： Arbuscular mycorrhizal fungi; Montane and alpine grasslands; Preferential symbiotic association; Diversity; Elevation

期刊名称：MYCORRHIZA （ 影响因子：3.387； 五年影响因子：4.031 ）

ISSN： 0940-6360

年卷期： 2018 年 28 卷 7 期

页码：

收录情况： SCI

摘要： Understanding the diversity and community structure of arbuscular mycorrhizal fungi (AMF) in extreme conditions is fimdamental to predict the occurrence and evolution of either symbiotic partner in alpine ecosystems. We investigated the AMF associations of three plant species at elevations ranging between 3105 and 4556 m a.s.l. on Mount Segrila on the Tibetan Plateau. Three of four locations were studied in two consecutive years. The AMF diversity and community composition in the roots of Carex pseudofoetida, Pennisetum centrasiaticum, and Fragaria moupinensis differed little. However, at high elevations, the abundance of members of Acaulosporaceae increased relative to that of Glomeraceae. Plants at lower elevation sites, where Glomeraceae predominated as root symbionts, had higher leaf nitrogen and phosphorus concentrations than plants at higher elevation sites, where Acaulosporaceae predominated. The overall phylogenetic relatedness of the AMF increased with increasing elevation. This suggests that abiotic filtering may play an important role in the structuring of symbiotic AMF communities along elevational gradients. The functional role of Acaulosporaceae whose relative abundance was found to increase with elevation in alpine environments needs to be clarified in future studies.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序