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AOA and AOB communities respond differently to changes of soil pH under long-term fertilization

文献类型： 外文期刊

作者： Sun, Ruibo 1 ; Myrold, David D. 3 ; Wang, Daozhong 4 ; Guo, Xisheng 4 ; Chu, Haiyan 1 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, East Beijing Rd 71, Nanjing 210008, Peoples R China

2.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Key Lab Agr Water Resources, 286 Huaizhong Rd, Shijiazhuang 050021, Hebei, Peoples R China

3.Oregon State Univ, Dept Crop & Soil Sci, Corvallis, OR 97331 USA

4.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, South Nongke Rd 40, Hefei 230031, Peoples R China

关键词： AOA; AOB; Microbial diversity; Soil pH; Long-term fertilization; High-throughput sequencing

期刊名称：SOIL ECOLOGY LETTERS （ 影响因子：4.0； 五年影响因子：4.1 ）

ISSN： 2662-2289

年卷期： 2019 年 1 卷 3-4 期

页码：

收录情况： SCI

摘要： Archaeal and bacterial ammonia-oxidizers drive the first step of nitrification, ammonia oxidation. Despite their importance, the relative contribution of soil factors influencing the abundance, diversity and community composition of ammonia oxidizing archaea (AOA) and bacteria (AOB) are seldom compared. In this study, the AOA and AOB communities in soils from a long-term fertilization experiment (which formed gradients of pH and nutrients) were measured using 454 pyrosequencing of the amoA gene. Results showed that both AOA and AOB communities were influenced by fertilization practice. Changes of AOA abundance, diversity and community structure were closely correlated with a single factor, soil pH, and the abundance and diversity of AOA were lower under the acidified treatments. By contrast, AOB abundance was higher in the acidified soil than in the control soil while AOB diversity was little impacted by soil acidification, and both the abundance and diversity of AOB were most highly correlated with soil carbon and available phosphorus. These results indicated that AOB diversity seemed more resistant to soil acidification than that of AOA, and also suggested that AOB have greater ecophysiological diversity and broader range of habitats than AOA in this lime concretion black soil, and the potential contribution of AOB to ammonia oxidation in acid environments should not be overlooked.

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