National estimates of environmental thresholds for upland soil phosphorus in China based on a meta-analysis

Zhou, Jia; Zhang, Yufu; Wu, Kaibin; Hu, Minpeng; Wu, Hao Bin; Chen, Dingjiang

doi:10.1016/j.scitotenv.2021.146677

Cited by 25 publications

(12 citation statements)

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“…The environmental threshold of P and loss risk is influenced by a combination of factors such as land cover, snowmelt rainfall, temperature, soil texture and biochemical properties (Liu et al, 2013; Xie et al, 2021; Zhou et al, 2021). Part of the P desorbed from soil aggregate is absorbed and used by plants, and part of it may be lost.…”

Section: Discussionmentioning

confidence: 99%

“…The P storage and the AP supply capacity are related to well‐established soil ecosystems, but soil P accumulation level usually has an environmental threshold (or inflection point). It is reported that beyond this threshold, the adsorption capacity of soil to P decreased and the concentration of soluble P increased (Boeykens et al, 2017; Withers et al, 2019; Yang et al, 2017; Zhou et al, 2021). Due to the erosion of rainwater, the soluble P mobility increased rapidly and P run‐off and leaching are easy to occur, which leads to the degradation of soil quality and a negative impact on the soil ecosystems (Kristin et al, 2021; Simpson et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

et al. 2022

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This article is a study of total phosphorus (TP), available phosphorus (AP) and phosphorus (P) fractions of soil aggregates along an altitude gradient in the sub-alpine region of Southwest China. We conclude that soil aggregate TP and AP contents are higher at 3980 m and 3347 m; there are no significant differences in soil aggregate TP at any altitude (p > 0.05); the AP and phosphorus activation coefficient (PAC) are higher in 0.25-0.5 mm aggregate. Soil aggregates TPi > TPo at 3009 m and TPo > TPi at 3347, 3654 and 3980 m. Using multiple stepwise regression analysis, we conclude that NaOH-Pi is the key fraction of AP supply, NaHCO 3 -Pi and NaOH-Pi are important fractions of CaCl 2 -P. Through piecewise linear fitting of soil aggregate AP and CaCl 2 -P, the soil P environmental threshold obtained is 27.766 mg kg À1 in this region. Also we got <0.25 mm, 0.25-0.5 mm aggregates at 3980 m which have high soil P loss risk. Our study fills in gap about the distribution of P fraction in aggregates and effects of soil P fraction for AP and CaCl 2 -P in high-altitude areas. Our study provides a reference and scientific basis for understanding the soil aggregate P storage capacity and the biological effectiveness of P fractions at high altitudes. Our study on the P environmental threshold provides a reference for soil P storage capacity. Our study provides a reference value for the soil P loss risk management, and sustainable development of soil ecosystems in the sub-alpine region of Southwest China.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

et al. 2022

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“…Examples of this include increasing the number and length of root hairs; increasing the root-to-shoot ratio; adjusting the angle of root growth; increasing the number of lateral roots, adventitious roots, and young roots; increasing root length, shallow roots; and increasing root length and density in the soil surface layer ( Hammelehle et al, 2018 ; Lynch, 2019 ; Zhang Z. et al, 2021 ). Mycorrhizal plants can obtain P from the soil through the root pathway absorbed by root hairs and root epidermal cells, as well as the hyphal pathway absorbed by arbuscular mycorrhizal fungi, which synergistically promote nutrient absorption ( Ferrol et al, 2019 ; Chu et al, 2020 ; Zhou J. et al, 2021 ). In the hyphal pathway, arbuscular mycorrhizal fungi improve plant P nutrient status through the hyphae.…”

Section: The P Removal Mechanism Of Psmsmentioning

confidence: 99%

“…P in soil includes two forms: organic and inorganic P. Although soil contains a large amount of phosphorus, it usually exists in a form that cannot be directly utilized by plants ( Ikhajiagbe et al, 2020 ; Divjot et al, 2021 ). P combines with Ca, Fe, and Al metals to form minerals, and P is adsorbed by iron/aluminum (hydrogen) oxides, leading to P fixation in the soil ( Ma J. et al, 2021 ; Zhou J. et al, 2021 ). The mobility of P is poor in soil, and plants cannot directly absorb and utilize P, leading to the widespread phenomenon of low P in ecosystems, which limits plant growth and yield.…”

Section: Introductionmentioning

confidence: 99%

Soil phosphorus transformation and plant uptake driven by phosphate-solubilizing microorganisms

Pang,

Li,

Solanki

et al. 2024

Front. Microbiol.

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Phosphorus (P) is an important nutrient for plants, and a lack of available P greatly limits plant growth and development. Phosphate-solubilizing microorganisms (PSMs) significantly enhance the ability of plants to absorb and utilize P, which is important for improving plant nutrient turnover and yield. This article summarizes and analyzes how PSMs promote the absorption and utilization of P nutrients by plants from four perspectives: the types and functions of PSMs, phosphate-solubilizing mechanisms, main functional genes, and the impact of complex inoculation of PSMs on plant P acquisition. This article reviews the physiological and molecular mechanisms of phosphorus solubilization and growth promotion by PSMs, with a focus on analyzing the impact of PSMs on soil microbial communities and its interaction with root exudates. In order to better understand the ability of PSMs and their role in soil P transformation and to provide prospects for research on PSMs promoting plant P absorption. PSMs mainly activate insoluble P through the secretion of organic acids, phosphatase production, and mycorrhizal symbiosis, mycorrhizal symbiosis indirectly activates P via carbon exchange. PSMs can secrete organic acids and produce phosphatase, which plays a crucial role in soil P cycling, and related genes are involved in regulating the P-solubilization ability. This article reviews the mechanisms by which microorganisms promote plant uptake of soil P, which is of great significance for a deeper understanding of PSM-mediated soil P cycling, plant P uptake and utilization, and for improving the efficiency of P utilization in agriculture.

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“…For one of these genes, VcHA11.1, two transcription factors, VcbHLH104 and VcDof2.1, were discovered. The fact that plants' PM H + -ATPases are coded with this multigene family is considered to be an evolutionary step associated with the emergence of land plants and the resulting need for the independent regulation of isozymes localized in different tissues and organs [61,62]. The expression levels of H + -ATPase genes in the V. corymbosum 'Emerald' variety decreased with the increase in the growth medium pH from 5.0 to 8.0 [59].…”

Section: Release Of Phosphate Ions From Soil Components: Potential Ca...mentioning

confidence: 99%

Phosphorus Supply to Plants of Vaccinium L. Genus: Proven Patterns and Unexplored Issues

Struchkova,

Mikheev,

Berezina

et al. 2024

Agronomy

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Phosphorus availability is a serious problem for plants growing and grown in acidic soils of bogs, poor in macronutrients. The application of phosphorus fertilizers to such soils is unprofitable because of the physical and chemical properties of these soils, where phosphate is firmly bound to organic and inorganic compounds and becomes inaccessible to plants. Plants of the Vaccinium genus both from natural stands and commercial plantations may suffer from phosphorus deficiency, so they need to have a number of adaptations that allow them to efficiently extract phosphorus. This review addresses the following issues in relation to plants of the Vaccinium genus: sources of phosphorus for plants; the release of phosphate ions from soil components; the transport of phosphate ions into plants; and the importance of mycorrhiza in supplying phosphorus to plants. Thus, we sought to draw researchers’ attention to sources and routes of phosphorus supply of plants of the Vaccinium genus and its unexplored aspects.

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National estimates of environmental thresholds for upland soil phosphorus in China based on a meta-analysis

Cited by 25 publications

References 70 publications

The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

Soil phosphorus transformation and plant uptake driven by phosphate-solubilizing microorganisms

Phosphorus Supply to Plants of Vaccinium L. Genus: Proven Patterns and Unexplored Issues

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