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Archaea is more important than bacteria in driving soil stoichiometry in phosphorus deficient habitats

文献类型： 外文期刊

作者： Wang, Jun-Tao 1 ; Zhang, Ya-Bo 1 ; Xiao, Qiang 5 ; Zhang, Li-Mei 1 ;

作者机构： 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China

2.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia

3.Western Sydney Univ, Global Ctr Land Based Innovat, Penrith, NSW 2751, Australia

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

5.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China

6.Beijing Engn Technol Res Ctr Slow Controlled Rele, Beijing 100097, Peoples R China

关键词： Acidic forest soil; Niche differentiation; Soil stoichiometry; Phosphorus deficiency; Archaea

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）

ISSN： 0048-9697

年卷期： 2022 年 827 卷

页码：

收录情况： SCI

摘要： Phosphorus deficiency is a critical limit on the cycling of carbon (C), nitrogen (N) and phosphorus (P) in forest ecosystems. Despite the pivotal roles of microbes in driving the biogeochemical cycling of C/N/P, our knowledge on the relationships of soil bacteria and archaea to P deficiency in forest ecosystems remains scarce. Here, we studied 110 acidic soils (average pH 4.5) collected across 700-km subtropical forests with a gradient of available phosphorus (AP) ranging from 0.21 to 17.6 mg/kg. We analysed the soil C/N/P stoichiometry and studied soil bacterial and archaeal diversity/abundance via high throughput sequencing and qPC12 approaches. Our results show that soil P decoupled with N or C when below 3 mg/kg but coupled with C and N when above 3 mg/kg. Archaeal diversity and abundance were significantly higher in low AP (< 3 mg/kg) soils than in high AP (>3 mg/kg) soils, while bacterial were less changed. Compared with bacteria, archaea are more strongly related with soil stoichiometry (C:N, C:P, N:P), especially when AP was less than 3 mg/kg. Taxonomic and functional composition analysis further confirmed that archaeal rather than bacterial taxonomic composition was significantly related with functional composition of microbial communities. Taken together, our results show that archaea are more important than bacteria in driving soil stoichiometry in phosphorus deficient habitats and suggest a niche differentiation of soil bacteria and archaea in regulating the soil C/N/P cycling in subtropical forests.

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