Effects of   Long-Term   Phosphorus Fertiliser Application  on Phosphorus Fractions and Availability in Soils with Different Textures

Chen, Shiyong; Li, Wanyi; Liao, Fuxing; Jin, Shi; Yang, Shuo; Zhang, Haipeng; Yang, Yanju

doi:10.2139/ssrn.4356428

Cited by 1 publication

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“…Phosphorus activation coefficient (PAC) is the percentage of AP (mg•kg -1 ) to TP (g•kg -1 ) (Chen et al, 2020). SMBP/TP is considered as an indicator of P utilization efficiency by microorganisms .…”

Section: Determination Of Phosphotrophic Properties In Rhizospherementioning

confidence: 99%

Synergistic variation of rhizosphere soil phosphorus availability and microbial diversity with stand age in plantations of the endangered tree species Parashorea chinensis

Li,

Ullah,

Liu

et al. 2024

Front. Plant Sci.

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IntroductionSoil physicochemical properties and nutrient composition play a significant role in shaping microbial communities, and facilitating soil phosphorus (P) transformation. However, studies on the mechanisms of interactions between P transformation characteristics and rhizosphere microbial diversity in P-deficient soils on longer time scales are still limited.MethodsIn this study, rhizosphere soils were collected from a pure plantation of Parashorea chinensis (P. chinensis) at six stand ages in the subtropical China, and the dynamic transformation characteristics of microbial diversity and P fractions were analyzed to reveal the variation of their interactions with age.ResultsOur findings revealed that the rhizosphere soils across stand ages were in a strongly acidic and P-deficient state, with pH values ranging from 3.4 to 4.6, and available P contents ranging from 2.6 to 7.9 mg·kg-1. The adsorption of P by Fe3+ and presence of high levels of steady-state organic P highly restricted the availability of P in soil. On long time scales, acid phosphatase activity and microbial biomass P were the main drivers of P activation. Moreover, pH, available P, and ammonium nitrogen were identified as key factors driving microbial community diversity. As stand age increased, most of the nutrient content indicators firstly increased and then decreased, the conversion of other forms of P to bio-available P became difficult, P availability and soil fertility began to decline. However, bacteria were still able to maintain stable species abundance and diversity. In contrast, stand age had a greater effect on the diversity of the fungal community than on the bacteria. The Shannon and Simpson indices varied by 4.81 and 0.70 for the fungi, respectively, compared to only 1.91 and 0.06 for the bacteria. Microorganisms play a dominant role in the development of their relationship with soil P.DiscussionIn conclusion, rhizosphere microorganisms in P. chinensis plantations gradually adapt to the acidic, low P environment over time. This adaptation is conducive to maintaining P bioeffectiveness and alleviating P limitation.

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Section: Determination Of Phosphotrophic Properties In Rhizospherementioning

confidence: 99%

Synergistic variation of rhizosphere soil phosphorus availability and microbial diversity with stand age in plantations of the endangered tree species Parashorea chinensis

Li,

Ullah,

Liu

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

Effects of Long-Term Phosphorus Fertiliser Application on Phosphorus Fractions and Availability in Soils with Different Textures

Cited by 1 publication

References 0 publications

Synergistic variation of rhizosphere soil phosphorus availability and microbial diversity with stand age in plantations of the endangered tree species Parashorea chinensis

Synergistic variation of rhizosphere soil phosphorus availability and microbial diversity with stand age in plantations of the endangered tree species Parashorea chinensis

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