Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility
文献类型：期刊论文
| 作者 | Liu, Yongjun1,2; Johnson, Nancy Collins3; Mao, Lin1; Shi, Guoxi4; Jiang, Shengjing1; Ma, Xiaojun1; Du, Guozhen5; An, Lizhe1,2; Feng, Huyuan1 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2015-10-01 |
| 卷号 | 89页码:196-205 |
| 关键词 | Symbiotic fungi Phylogenetic structure Ecological process Competition Environmental filtering Resource availability |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2015.07.007 |
| 通讯作者 | An, Lizhe(lizhean@lzu.edu.cn) |
| 英文摘要 | Understanding the underlying mechanisms driving responses of belowground communities to increasing soil fertility will facilitate predictions of ecosystem responses to anthropogenic eutrophication of terrestrial systems. We studied the impact of fertilization of an alpine meadow on arbuscular mycorrhizal (AM) fungi, a group of root-associated microorganisms that are important in maintaining sustainable ecosystems. Species and phylogenetic composition of AM fungal communities in soils were compared across a soil fertility gradient generated by 8 years of combined nitrogen and phosphorus fertilization. Phylogenetic patterns were used to infer the ecological processes structuring the fungal communities. We identified 37 AM fungal virtual taxa, mostly in the genus Glomus. High fertilizer treatments caused a dramatic loss of Glomus species, but a significant increase in genus richness and a shift towards dominance of the lineage of Diversispora. AM fungal communities were phylogenetically clustered in unfertilized soil, random in the low fertilizer treatment and over-dispersed in the high fertilizer treatments, suggesting that the primary ecological process structuring communities shifted from environmental filtering (selection by host plants and fungal niches) to a stochastic process and finally to competitive exclusion across the fertilization gradient. Our findings elucidate the community shifts associated with increased soil fertility, and suggest that high fertilizer inputs may change the dominant ecological processes responsible for the assembly of AM fungal communities towards increased competition as photosynthate from host plants becomes an increasingly limited resource. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | FUNGAL COMMUNITIES ; NITROGEN-FERTILIZATION ; EXPERIMENTAL GRASSLAND ; MICROBIAL COMMUNITIES ; MOLECULAR DIVERSITY ; PLANT DIVERSITY ; ROOT ; ECOSYSTEM ; FOREST ; ECOLOGY |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000361159800018 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557030 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | An, Lizhe |
| 作者单位 | 1.Lanzhou Univ, Sch Life Sci, MOE Key Lab Cell Act & Stress Adaptat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.No Arizona Univ, Sch Earth Sci & Environm Sustainabil, Flagstaff, AZ 86011 USA 4.Longdong Univ, Univ Key Lab Protect & Utilizat Longdong Bioresou, Qingyang 745000, Peoples R China 5.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yongjun,Johnson, Nancy Collins,Mao, Lin,et al. Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,89:196-205. |
| APA | Liu, Yongjun.,Johnson, Nancy Collins.,Mao, Lin.,Shi, Guoxi.,Jiang, Shengjing.,...&Feng, Huyuan.(2015).Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility.SOIL BIOLOGY & BIOCHEMISTRY,89,196-205. |
| MLA | Liu, Yongjun,et al."Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility".SOIL BIOLOGY & BIOCHEMISTRY 89(2015):196-205. |
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来源：寒区旱区环境与工程研究所
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