Response of soil microbial communities to contrasted histories of phosphorus fertilisation in pastures

Wakelin, Steven A.; Mander, Carolyn; Gerard, Emily; Jansa, Jan; Erb, Angela; Young, Sandra; Condron, Leo M.; O’Callaghan, Maureen

doi:10.1016/j.apsoil.2012.06.002

Cited by 75 publications

(40 citation statements)

References 61 publications

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“…While sites differed in geographical location, soil type, environmental factors, extent of cultivation and botanical composition, the addition of exogenous nutrients caused the strongest shifts in community assemblage and functional composition (Wakelin et al 2012a). This is supported by other recent investigations demonstrating that application of P fertilizer alters the abundance of bacteria involved in the biogeochemical cycling of P in soil (Mander et al 2012) and also alters the composition of various taxa in particular Actinobacteria and arbuscular mycorrhizal fungi (Wakelin et al 2012b). In addition, the structure and functions in soil ecosystems are closely linked to pH; several studies have identified soil pH as a 'first-order' factor driving community composition (e.g.…”

supporting

confidence: 66%

Physicochemical properties of 50 New Zealand pasture soils: a starting point for assessing and managing soil microbial resources

Wakelin

Koten

O’Callaghan

et al. 2013

New Zealand Journal of Agricultural Research

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New Zealand's pastoral agriculture faces challenges associated with increasing on-farm productivity, while minimizing the environmental footprint of farming. Soil microorganisms mediate a wide range of processes that affect plant production and also have environmental consequences. However, there has been little attempt to manage these in a farming system context. This is primarily because of difficulties in determining what microbiological resources are present in soils, how they link with soil processes and function, and how variation in soil types, climate or farm management practices influence microbial function. We sampled 50 pasture soils from across 11 of New Zealand's major soil groups, 10 geographical zones and under different grazing systems (high input dairy units to dry-stock grazing). The environmental and physicochemical properties of the soils were characterized and DNA extracted. The concentrations of elements primarily associated with fertilizer use (phosphorus, nitrogen and sulphur) were all significantly (P B 0.05) higher in dairy-based systems, yet soil carbon was unchanged. The concentration of many properties varied between the soil types, reflecting a combination of their pedogenesis and predominant land use. The amount of DNA in soils was closely related to anaerobically mineralizable nitrogen (P B 0.001), a measure of soil organic matter content, but did not vary with grazing system intensity. The extensive data set for each soil, coupled with DNA originating from the same samples, provides a unique opportunity for a number of ancillary studies to map biological resources in pastures and assess how these are regulated by edaphic and environmental properties.

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supporting

confidence: 66%

Physicochemical properties of 50 New Zealand pasture soils: a starting point for assessing and managing soil microbial resources

Wakelin

Koten

O’Callaghan

et al. 2013

New Zealand Journal of Agricultural Research

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“…Although in China, the soil may harbor a total phosphorus reserve, it cannot be efficiently used by the plants because of low soil quality (Wu 2004). PSMs able to release phosphorus from the soil minerals play a key role in soil fertility (Wakelin et al 2012) when P availability is low or P demand is high. Most relevant literature pertains to PSB and their potential use for the enhancement of soil fertility (Collavino et al 2010; Ghosh et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Isolation and characterization of phosphofungi, and screening of their plant growth-promoting activities

Wang

Sui

et al. 2018

AMB Expr

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Rhizospheric microorganisms can increase phosphorus availability in the soil. In this regard, the ability of phosphofungi to dissolve insoluble phosphorus compounds is greater than that of phosphate-solubilizing bacteria. The aim of the current study was to identify efficient phosphofungi that could be developed as commercial microbial agents. Among several phosphate-solubilizing fungal isolates screened, strain CS-1 showed the highest phosphorus-solubilization ability. Based on phylogenetic analysis of the internal transcribed spacer region sequence, it was identified as Aspergillus niger. High-performance liquid chromatography analysis revealed that the mechanism of phosphorus solubilization by CS-1 involved the synthesis and secretion of organic acids, mainly oxalic, tartaric, and citric acids. Furthermore, strain CS-1 exhibited other growth-promoting abilities, including efficient potassium release and degradation of crop straw cellulose. These properties help to returning crop residues to the soil, thereby increasing nutrient availability and sustaining organic matter concentration therein. A pot experiment revealed that CS-1 apparently increased the assessed biometric parameters of wheat seedlings, implying the potential of this strain to be developed as a commercial microbial agent. We used Illumina MiSeq sequencing to investigate the microbial community composition in the rhizosphere of uninoculated wheat plants and wheat plants inoculated with the CS-1 strain to obtain insight into the effect of the CS-1 strain inoculation. The data clearly demonstrated that CS-1 significantly reduced the content of pathogenic fungi, including Gibberella, Fusarium, Monographella, Bipolaris, and Volutella, which cause soil-borne diseases in various crops. Strain CS-1 may hence be developed into a microbial agent for plant growth improvement.Electronic supplementary materialThe online version of this article (10.1186/s13568-018-0593-4) contains supplementary material, which is available to authorized users.

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“…We had expected to find a positive relationship between treatments containing P (NP, PS, NPS, and NPSM) and VAM populations (Wakelin et al 2012). However, VAM population was significantly increased only under NPS and NPSM, with no observed relationship existing between VAM populations and the remaining double-fertilizer treatments containing P. This result suggests that a balanced fertilization with N, P, and S may also play an important role in regulating VAM populations in a conservation agriculture system.…”

Section: Discussionmentioning

confidence: 98%

“…In recent years, most studies have focused on the comparative effects of both mineral fertilization and organic manure practices on the physical, chemical, and biological indicators in the soil. It is generally accepted that the addition of organic manure tends to increase the total microbial biomass through the response of specific microbial groups (Ai et al 2012;Wakelin et al 2012). Nevertheless, farmers usually find mineral fertilizers more affordable in response to the rapid economic agriculture development.…”

Section: Introductionmentioning

confidence: 99%

Integrated multivariate analysis of selected soil microbial properties and their relationships with mineral fertilization management in a conservation agriculture system

Verdenelli

Conforto

Brandán

et al. 2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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The effect of mineral fertilizer application on soil microbial community was investigated in a conservation agriculture system. The aim of this work was to evaluate how mineral fertilization with nitrogen (N), phosphorus (P), sulfur (S), and micronutrients (M) affects microbial community structure and function. A 10-year experiment, conducted on a typic Hapludoll using six mineral fertilizer treatments (control, CK; PS; NS; NP; NPS; and NPSM) was evaluated in central Argentina. Microbial community structure and function were characterized by phospholipid fatty acids and community-level physiological profiles, respectively. Soil microbial metabolic activity was determined by monitoring microbial respiration, fluorescein diacetate activity (FDA), dehydrogenase activity and phosphatase activity (PHA). NPS and NPSM treatments showed higher total microbial biomass and gram-positive and gram-negative bacteria, but lower fungal biomass than the remaining treatments. Fertilizer treatments without S (CK and NP) showed lower carbon source utilization and Shannon index than the other treatments. In addition, both FDA and PHA significantly increased under NPSM. An integrated PC analysis indicated that sensitive bioindicators were significantly associated with three carbon sources, one metabolic parameter, and six fatty acid bioindicators. These results provide information about the importance of balanced fertilization with P, N, S, and M in promoting microbial biomass, metabolic activity, and functional diversity.

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Response of soil microbial communities to contrasted histories of phosphorus fertilisation in pastures

Cited by 75 publications

References 61 publications

Physicochemical properties of 50 New Zealand pasture soils: a starting point for assessing and managing soil microbial resources

Physicochemical properties of 50 New Zealand pasture soils: a starting point for assessing and managing soil microbial resources

Isolation and characterization of phosphofungi, and screening of their plant growth-promoting activities

Integrated multivariate analysis of selected soil microbial properties and their relationships with mineral fertilization management in a conservation agriculture system

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