Arbuscular mycorrhizal fungal community composition affected by original elevation rather than translocation along an altitudinal gradient on the Qinghai-Tibet Plateau.
Arbuscular mycorrhizal fungal community composition affected by original elevation rather than translocation along an altitudinal gradient on the Qinghai-Tibet Plateau.
复制标题
青藏高原丛枝菌根真菌群落组成受原始海拔影响而不是沿海拔梯度易位
DOI：
10.1038/srep36606
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发表时间：
2016-11-09
影响因子：
4.6
通讯作者：
Guo LD
中科院分区：
文献类型：
--
作者：
Yang W;Zheng Y;Gao C;Duan JC;Wang SP;Guo LD
阐明丛枝菌根真菌对海拔变化的响应对于提高对全球不对称气候变化情景下生态系统微生物功能的认识至关重要。AM真菌孢子密度在海拔较低的地方显著高于海拔较高的地方，但在海拔较高的地方，AM真菌孢子密度从原来的3200 m向上迁移到3400 m和3600 m后显著增加。对AM真菌的18S rDNA序列进行454焦磷酸测序，获得73个操作分类单位（otu），序列相似性为97%。原始海拔、向下移位和向上移位对AM真菌OTU丰富度无显著影响。但随着海拔高度的升高，云杉科和双孢科的OTU丰富度呈上升趋势，而禾本科和球孢科的OTU丰富度呈下降趋势。AM真菌群落组成明显受原始海拔高度的影响，而不受向下迁移和向上迁移的影响。
Elucidating arbuscular mycorrhizal (AM) fungal responses to elevation changes is critical to improve understanding of microbial function in ecosystems under global asymmetrical climate change scenarios. Here we examined AM fungal community in a two-year reciprocal translocation of vegetation-intact soil blocks along an altitudinal gradient (3,200 m to 3,800 m) in an alpine meadow on the Qinghai-Tibet Plateau. AM fungal spore density was significantly higher at lower elevation than at higher elevation regardless of translocation, except that this parameter was significantly increased by upward translocation from original 3,200 m to 3,400 m and 3,600 m. Seventy-three operational taxonomic units (OTUs) of AM fungi were recovered using 454-pyrosequencing of 18S rDNA sequences at a 97% sequence similarity. Original elevation, downward translocation and upward translocation did not significantly affect AM fungal OTU richness. However, with increasing altitude the OTU richness of Acaulosporaceae and Ambisporaceae increased, but the OTU richness of Gigasporaceae and Glomeraceae decreased generally. The AM fungal community composition was significantly structured by original elevation but not by downward translocation and upward translocation. Our findings highlight that compared with the short-term reciprocal translocation, original elevation is a stronger determinant in shaping AM fungal community in the Qinghai-Tibet alpine meadow.
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影响因子：
2.5
作者：
Egli, M;Hitz, C;Mirabella, A
通讯作者：
Mirabella, A
DOI：
10.1016/j.jembe.2005.12.017
发表时间：
2006-03-07
影响因子：
2
作者：
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通讯作者：
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影响因子：
9.7
作者：
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通讯作者：
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影响因子：
2.5
作者：
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通讯作者：
Kiers, E. Toby
影响因子：
9.7
作者：
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通讯作者：
Zhao, Lili