C:P stoichiometric imbalance between soil and microorganisms drives microbial phosphorus turnover in the rhizosphere

Yi, Peng; Duan, Yisheng; Huo, Weige; Zhang, Zuojian; Huang, Da; Xu, Minggang; Wang, Xihe; Yang, Xueyun; Wang, Boren; Kuzyakov, Yakov; Feng, Gu

doi:10.1007/s00374-022-01633-0

Cited by 31 publications

(5 citation statements)

References 70 publications

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“…The soil C:P ratio was used to measure the ability of P mineralization, playing crucial roles in regulating plant growth (Wang et al, 2014;Fu et al, 2015;Peng et al, 2022). The soil C:P ratio of <200 indicates that the organic matter would accumulate and further promote the net mineralization of microbial biomass P, increasing the soil P content (Paul, 2014).…”

Section: Discussionmentioning

confidence: 99%

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Tong

Wu²,

Jiang³

et al. 2023

Front. For. Glob. Change

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The crucial roles of soil carbon (C) and nutrients and their stoichiometric characteristics in indicating the soil interior nutrient cycling and plant nutrient supply of forest ecosystems have been widely verified, whereas it has been less explored when considering the influencing factors regionally, especially for the widely cultivated plantation tree species. In the current study, the patterns of soil organic C (SOC), total nitrogen (TN), and total phosphorus (TP) stoichiometry in Chinese fir [Cunninghamia lanceolata (Lamb.) Hook] plantations across subtropical China were analyzed, and their influencing factors were also investigated. The results showed that the range of SOC: TN (C:N), SOC: TP (C:P), and TN: TP (N:P) ratios were 7.32–18.27, 20.15–230.48, and 2.11–15.05 with a mean value of 13.22, 83.50, and 6.05, respectively. Well-constrained correlations were found in SOC and TN, as well as in TN and TP. Soil TN and TP contents increased with increasing altitude, whereas soil C:N, C:P, and N:P ratios decreased. Soil TP content decreased, and the C:P ratio increased with increasing mean annual temperature (MAT) and annual total solar radiation (ATSR). Soil C:N, C:P, and N:P ratios increased with increased mean annual precipitation (MAP) and mean annual evaporation (MAE). Overall, our findings suggested that the soil nutrient supply is relatively adequate in Chinese fir plantations across subtropical China. Meanwhile, soil C, N, and P stoichiometric characteristics were affected by geographical and climatic variables to different degrees.

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Section: Discussionmentioning

confidence: 99%

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Tong

Wu²,

Jiang³

et al. 2023

Front. For. Glob. Change

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“…This characteristic of chemical P fertilizers resulted in significantly higher soil CaCl 2 -P levels compared to other treatments when the substitution rate was ≤30%, increasing soil environmental stress. It is well-established that soil MBP is biologically fixed by soil microorganisms and exhibits an extremely fast turnover rate ( Peng et al., 2022 ). MBP serves as a supplementary energy source for plant-available P and plays a role as a “transit station” in the soil P cycle ( Zhang et al., 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Optimizing the manure substitution rate based on phosphorus fertilizer to enhance soil phosphorus turnover and root uptake in pepper (Capsicum)

Sun,

Cui,

Sun

et al. 2024

Front. Plant Sci.

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IntroductionIn contemporary agriculture, the substitution of manure for chemical fertilizer based on phosphorus (P) input in vegetable production has led to a significant reduction in P fertilizer application rates, while, the effect of manure substitution rates on soil P transformation and uptake by root remain unclear.MethodsThis research conducts a pot experiment with varying manure substitution rates (0%, 10%, 20%, 30%, 40%, 50%, 75% and 100%) based on P nutrient content to elucidate the mechanisms through which manure substitution affects P uptake in pepper.Results and discussionThe result showed that shoot and root biomass of pepper gradually increased as manure substitution rate from 10% to 40%, and then gradually decreased with further increases in the substitution rate. Soil alkaline phosphatase activity and arbuscular mycorrhizal (AM) colonization gradually increased with manure substitution rates improvement. Specifically, when the substitution rate reached 30%–40%, the alkaline phosphatase activity increased by 24.5%–33.8% compared to the fertilizer treatment. In contrast, phytase activity and the relative expression of phosphate transporter protein genes in the root system was declined after peaking at 30% manure substitution. Additionally, soil available P remained moderate under 30%–40% substitution rate, which was reduced by 8.6%–10.2% compared to that in chemical fertilizer treatment, while microbial biomass P was comparable. In the current study, soil labile P similar to or even higher than that in chemical fertilizer treatment when the substitution rate was ≤40%. Correlation heatmaps demonstrated a significant and positive relationship between soil available P and factors related to labile P and moderately labile P.ConclusionThis finding suggested that substituting 30%–40% of chemical P with manure can effectively enhance root length, AM colonization, soil enzyme activity, soil labile P, and consequently improve P uptake in pepper. These findings provide valuable insights for future organic agricultural practices that prioritize P supply, aiming to standardize organic P management in farmland and achieve high crop yields and maintain soil health.

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“…One explanation is that the higher alpha diversity of understory vegetation encouraged C breakdown through a microbial priming effect by niche compensation across artificial shrubs in the intermediate treatment (Zhang et al., 2023). The priming effect in soil was driven by C/N/P stoichiometry in soil microbial biomass (Peng et al., 2022). The C/N/P of soil microorganisms at the intermediate planting density was 22.12/1.25/3.90, while it was 18.24/1.12/0.69, 61.68/1.62/1.85 and 39.02/1.12/2.54 in unplanted, low and high planting density treatments, respectively.…”

Section: Discussionmentioning

confidence: 99%

Optimum planting density of Amorpha fruticosa promotes the recovery of understory vegetation and the arbuscular mycorrhizal fungal community in plantations in arid coal mining areas

Bi,

Wang,

Xiao

et al. 2024

Soil Use and Management

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Establishment of plantations may be a useful means of vegetation reconstruction in coal mining areas, especially in fragile environments. However, the influence of shrub planting on the relationship between understory vegetation and soil microorganisms remains poorly understood. Here, we describe a field experiment in which the relationships between understory vegetation and soil microorganisms under different planting densities of Amorpha fruticosa L. (A. fruticosa) were investigated. Compared with areas allowed to recover naturally, shrub planting changed the community and increased the biomass of understory vegetation and soil microbes, especially of arbuscular mycorrhizal fungi (AMF). Planting density was also a key factor that influenced understory vegetation and the soil AMF community and biomass. The maximum diversity of understory vegetation and the AMF community occurred at an intermediate density of introduced shrubs, which was considered to be the optimum density of A. fruticosa. The major soil nutrient cycles that influence understory vegetation and the AMF community were also investigated. An optimum density of introduced shrubs was important in the ecological reconstruction of vegetation in the coal mining area. There may also have been an optimum relationship between the understory vegetation and soil microorganisms especially with AMF in the experimental conditions.

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C:P stoichiometric imbalance between soil and microorganisms drives microbial phosphorus turnover in the rhizosphere

Cited by 31 publications

References 70 publications

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Optimizing the manure substitution rate based on phosphorus fertilizer to enhance soil phosphorus turnover and root uptake in pepper (Capsicum)

Optimum planting density of Amorpha fruticosa promotes the recovery of understory vegetation and the arbuscular mycorrhizal fungal community in plantations in arid coal mining areas

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