Ecological niche differentiation of ammonia-oxidising archaea and bacteria in acidic soils due to land use change

Dai, Shenyan; Liu, Qian; Zhao, Jun; Zhang, Jinbo

doi:10.1071/sr16356

Cited by 22 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result accorded with a previous study that found soil temperature was the important driver of global soil nitrification rate (Li et al 2020). Some studies have observed niche differentiation between the AOA and AOB communities across different land use types (Dai et al 2018;Hink et al 2018;Liuet al 2018). The inconsistency between our results and previous hypothesis indicated that land use changes in alkaline soil did not significantly affect the AOA and AOB community diversity (Fig.…”

Section: Factors Indirectly and Directly Regulate Ecosystem Functionssupporting

confidence: 91%

Keystone species affect the relationship between soil microbial diversity and ecosystem functioning under a subtropical land use change

Yang

Chen

Zhang

et al. 2020

Preprint

View full text Add to dashboard Cite

Soil microbial diversity is a key control over soil element cycling and ecosystem functioning, but how the keystone species regulate the association between soil microbial diversity and ecosystem functioning (particularly, the whole-community and specialized species driving) under land use change remain unresolved. Here we identified the relationship of microbial diversity [e.g., soil phospholipid fatty acids (PLFAs) richness and composition, ammonia-oxidizing archaea and bacteria (AOA and AOB) communities] with both the broad (i.e. microbial basal respiration) and specialized function (i.e. nitrification rate) in the wood land, shrubland and adjacent cropland in subtropical China. The microbial richness was significantly positively related to the broad function, but negatively correlated with the keystone species across different land use types. The relationship of biodiversity with the broad ecosystem functioning varied with land use change, with stronger relationship in the afforested land compared to the cropland. In contrast to the broad function, land use change did not significantly affect the specialized function (i.e. nitrification rate), but the specialized function was positively related to the AOA richness in the cropland. Additionally, the specialized function was predominately driven by the keystone species composition in AOA and AOB communities and indirectly regulated by soil environmental factors (particularly, soil temperature) across land use change. Overall, our results provided direct experimental insight into the mechanisms underlying the role of the keystone species in regulating below-ground ecosystem functioning under land use change, more especially, our findings also revealed shift in the maintaining mechanisms of ecosystem function from the broad function (i.e. niche compensation effect) to the specialize function (i.e. identity effect).

show abstract

Section: Factors Indirectly and Directly Regulate Ecosystem Functionssupporting

confidence: 91%

Keystone species affect the relationship between soil microbial diversity and ecosystem functioning under a subtropical land use change

Yang

Chen

Zhang

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…This result is in accordance with a previous study that found soil temperature was an important driver of the global soil nitrification rate (Li et al., 2020). Some studies have observed niche differentiation between the AOA and AOB communities across different land use types (Dai et al., 2018; Hink et al., 2018; Liu et al., 2018). However, our study cannot directly support the hypothesis of niche differentiation because land use change did not significant affect the AOA and AOB community (Figure 2b,c).…”

Section: Discussionmentioning

confidence: 99%

Keystone species affect the relationship between soil microbial diversity and ecosystem function under land use change in subtropical China

et al. 2021

View full text Add to dashboard Cite

Soil microbial diversity affects soil chemical cycling and ecosystem function. However, how highly connected keystone species regulate associated microbial structure and function (of the whole community and of specialized species), irrespective of their abundance under land use change, remains unresolved. Here, we identified the relationship between microbial diversity [soil phospholipid fatty acid (PLFA) richness and composition, and ammonia‐oxidizing archaea and bacteria (AOA and AOB) communities] with both a broad (i.e. microbial respiration) and specialized function (i.e. nitrification rate) in a woodland, shrubland and adjacent cropland in subtropical China. Microbial respiration was significantly positively related to the microbial richness, but negatively correlated with the keystone species richness across different land use types. The relationships between biodiversity and the broad ecosystem function varied with land use, with a stronger relationship in the afforested land compared with in the cropland. In contrast to the broad function, land use did not significantly affect the specialized function, but the specialized function was positively related to AOA richness in the cropland. Additionally, the specialized function was predominately driven by the keystone species composition in AOA and AOB communities and indirectly regulated by soil environmental factors (particularly soil temperature) across land uses. Overall, our results provide direct experimental insight into the mechanisms underlying the role of the keystone species in regulating below‐ground ecosystem functions under land use change. In particular, our findings reveal that the broad function is maintained by the niche compensation effect, while the specialized function is maintained by the identity effect. A free Plain Language Summary can be found within the Supporting Information of this article.

show abstract

“…Numerous studies have shown that nitrification activity in acidic soils is positively correlated with AOA abundance (7,10), and changes of AOA communities could significantly affect nitrification activity (7,11,12). However, recent studies of acidic upland soils have found that AOB are associated with potential nitrification rates (13) and act as metabolically active ammonia oxidizers (14)(15)(16). Such evidence could indicate that the assumption of AOA dominating nitrification in acidic soils may not hold true for all soil types and that the role of AOB in nitrification in acidic soils should be reevaluated.…”

mentioning

confidence: 99%

Nitrosospira Cluster 8a Plays a Predominant Role in the Nitrification Process of a Subtropical Ultisol under Long-Term Inorganic and Organic Fertilization

Lin

Luo

et al. 2018

Appl Environ Microbiol

View full text Add to dashboard Cite

Long-term effects of inorganic and organic fertilization on nitrification activity (NA) and the abundances and community structures of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) were investigated in an acidic Ultisol. Seven treatments applied annually for 27 years comprised no fertilization (control), inorganic NPK fertilizer (N), inorganic NPK fertilizer plus lime (CaCO) (NL), inorganic NPK fertilizer plus peanut straw (NPS), inorganic NPK fertilizer plus rice straw (NRS), inorganic NPK fertilizer plus radish (NR), and inorganic NPK fertilizer plus pig manure (NPM). In nonfertilized soil, the abundance of AOA was 1 order of magnitude higher than that of AOB. Fertilization reduced the abundance of AOA but increased that of AOB, especially in the NL treatment. The AOA communities in the control and the N treatments were dominated by the and B1 clades but shifted to clade A in the NL and NPM treatments. cluster 8a was found to be the most dominant AOB in all treatments. NA was primarily regulated by soil properties, especially soil pH, and the interaction with AOB abundance explained up to 73% of the variance in NA. When NL soils with neutral pH were excluded from the analysis, AOB abundance, especially the relative abundance of cluster 8a, was positively associated with NA. In contrast, there was no association between AOA abundance and NA. Overall, our data suggest that cluster 8a of AOB played an important role in the nitrification process in acidic soil following long-term inorganic and organic fertilization. The nitrification process is an important step in the nitrogen (N) cycle, affecting N availability and N losses to the wider environment. Ammonia oxidation, which is the first and rate-limiting step of nitrification, was widely accepted to be mainly regulated by AOA in acidic soils. However, in this study, nitrification activity was correlated with the abundance of AOB rather than that of AOA in acidic Ultisols. cluster 8a, a phylotype of AOB which preferred warm temperatures, and low soil pH played a predominant role in the nitrification process in the test Ultisols. Our results also showed that long-term application of lime or pig manure rather than plant residues altered the community structure of AOA and AOB. Taken together, our findings contribute new knowledge to the understanding of the nitrification process and ammonia oxidizers in subtropical acidic Ultisol under long-term inorganic and organic fertilization.

show abstract

Ecological niche differentiation of ammonia-oxidising archaea and bacteria in acidic soils due to land use change

Cited by 22 publications

References 50 publications

Keystone species affect the relationship between soil microbial diversity and ecosystem functioning under a subtropical land use change

Keystone species affect the relationship between soil microbial diversity and ecosystem functioning under a subtropical land use change

Keystone species affect the relationship between soil microbial diversity and ecosystem function under land use change in subtropical China

Nitrosospira Cluster 8a Plays a Predominant Role in the Nitrification Process of a Subtropical Ultisol under Long-Term Inorganic and Organic Fertilization

Contact Info

Product

Resources

About