Biochar application under low phosphorus input promotes soil organic phosphorus mineralization by shifting bacterial phoD gene community composition

Tian, Jing; Kuang, Xizhi; Tang, Mengtian; Chen, Xiao; Huang, Fei; Cai, Yiting; Cai, Kunzheng

doi:10.1016/j.scitotenv.2021.146556

Cited by 85 publications

(23 citation statements)

References 44 publications

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“…Major et al (2010) found that biochar was rich in soluble potassium, and the application of biochar could rapidly improve the AK content in the soil. In addition, Tian et al (2021) and Xia et al (2022) also confirmed that biochar could improve the soil microhabitat environment and accelerate the growth of phosphorus-and potassiumsolubilizing bacteria, which eventually converted phosphorus and potassium from ineffective forms to effective forms. Notably, the experimental results also showed that biochar application significantly reduced the MBC content and showed a decreasing trend with increasing soil depth, which may be related to the higher rate of microbial N fixation than total N mineralization (Mcclellan et al, 2010;Dempster et al, 2011).…”

Section: Effects Of Biochar On Soil Nutrient Content and Availabilitymentioning

confidence: 80%

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Biochar application ameliorated the nutrient content and fungal community structure in different yellow soil depths in the karst area of Southwest China

et al. 2022

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The influence of biochar on the change of nutrient content and fungal community structure is still not clear, especially in different yellow soil depths in karst areas. A soil column leaching simulation experiment was conducted to investigate the influence of biochar on soil content, enzymatic activity, and fungal community diversity and structural composition. Three biochar amounts were studied, namely, 0%(NB, no biochar), 1.0%(LB, low-application-rate biochar), and 4.0% (HB, high-application-rate biochar). The results showed that biochar increased the pH value and the contents of soil organic matter (SOM), total nitrogen (TN), available phosphorus (AP), and available potassium (AK) but reduced the microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN). Furthermore, this effect was enhanced with increasing biochar amount. Biochar was conducive to improving the nutrient availability in topsoil (0–20 cm), especially TN, AK, and MBN. Meanwhile, biochar affected the enzymatic activity, especially the sucrase activity. Biochar affected the diversity and structure of the fungal community, of which HB treatment had the most obvious effect. Among these treatments, Aspergillus, unclassified_Chaetomiaceae, Mortierella, Spizellomyces, Penicillium, Fusarium, and unclassified_Chromista fungal genera were the highest. Moreover, biochar inhibited the growth of harmful pathogens and increased the abundance of beneficial fungi in soil, and the effect was enhanced with increasing biochar amount and soil depth. Redundancy analysis (RDA) showed that AK was an important factor in yellow soil, although the main environmental factors affecting the fungal community structure were different in different soil depths. Overall, biochar had a positive effect on improving the land productivity and micro-ecological environment of yellow soil in the karst area.

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Section: Effects Of Biochar On Soil Nutrient Content and Availabilitymentioning

confidence: 80%

“…(2010) found that biochar was rich in soluble potassium, and the application of biochar could rapidly improve the AK content in the soil. In addition, Tian et al. (2021) and Xia et al.…”

Section: Discussionmentioning

confidence: 99%

Biochar application ameliorated the nutrient content and fungal community structure in different yellow soil depths in the karst area of Southwest China

et al. 2022

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“…Different responses of phoC and phoD gene abundance to rhizosphere effects Positive correlations between PSM abundance and phosphatase activities in various habitats have been frequently observed (Chen et al 2017;Zheng et al 2019). However, in another study, phoD gene abundance did not contribute to a change in phosphatase activity in upland red soil (Tian et al 2021).…”

Section: Discussionmentioning

confidence: 91%

“…2d). The rhizosphere environment with a higher C source and lower AP contents (Table S2) might be more conducive to the growth of speci c phoD-harboring bacteria (Tian et al 2021). However, the high AP content in the soil, resulting from P fertilization, can cause the negative feedback mechanism for limiting the growth of phoD-harboring bacteria (Chen et al 2019a).…”

Section: Discussionmentioning

confidence: 99%

“…This nding implies that phoD-harboring bacteria may have a strict requirement for a rhizosphere environment. For instance, speci c phoD-harboring genus is more preferentially selected under P-poor and C-rich conditions (Tian et al 2021). The growth of some phoDharboring bacterial species, such as Lysobacter antibioticus and Bradyrhizobium icense, was inhibited in the rhizosphere (Liu et al 2021).…”

Section: Different Rhizosphere Effects On Phoc and Phod Gene Diversitymentioning

confidence: 99%

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Stronger effect of maize rhizosphere than phosphorus fertilization on soil phosphatase activity and associated bacterial communities in acidic soil: distinct influences on phoC- and phoD-harboring bacteria

Guo¹,

Wang²,

Shen³

2021

Preprint

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Aims The bacteria phoC and phoD genes encode acid and alkaline phosphatase (ACP and ALP), respectively, which mineralize organic phosphorus (P) to inorganic P. The relative importance of P fertilization and the plant rhizosphere on soil phosphatase activities and associated bacterial communities in acidic soils are poorly understood; whether phoC- and phoD-harboring bacterial communities display different responses remains undetermined. Methods Maize was grown in acidic soil supplemented with 0 (P0), 20 (P20), and 200 (P200) mg P2O5 kg− 1 for 42 days. Maize biomasses, plant nutrients, soil properties, phosphatase activities, and associated bacterial abundance and community composition were determined. Results Relative to bulk soils, rhizosphere showed increased ACP and ALP activities, phoC and phoD gene abundance, but these effects were reduced in strength with P200 treatment, except for phoC gene abundance. The rhizosphere effect increased α-diversity of phoC-harboring bacteria under P fertilization but reduced α-diversity of phoD-harboring bacteria under P0 and P20 treatments. The rhizosphere significantly influenced both phoC- and phoD-harboring bacterial community compositions, with stronger effect on phoD-harboring bacteria; while P fertilization affected phoD-harboring bacteria but not phoC-harboring bacteria. Immigrated and extinct species play important roles in reshaping phoC- and phoD-harboring bacterial communities, respectively, in response to the rhizosphere effect. Conclusions Compared with P fertilization, the maize rhizosphere more strongly influenced soil phosphatase activities and phoC- and phoD-harboring bacterial communities in acidic soils, with phoD-harboring bacteria responding more strongly to the rhizosphere effect and P fertilization. Notably, the strength of the rhizosphere effect heavily relied on P fertilization level.

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Enhancing Switchgrass Growth With Biochar Derived From Mushroom Residue: A Study on Regulating Physicochemical Properties of Acidic Phosphogypsum

Xiang,

Mao,

Liu

et al. 2024

Food and Energy Security

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Acidity limits plant growth, particularly when the growing medium has a pH below 5, a challenge that is particularly relevant for certain plants like switchgrass (Panicum virgatum). Although adding biochar to the growing medium has been shown to improve plant growth by modulating acidity, its specific impact on switchgrass remains largely uninvestigated. Thus, we conducted a pot experiment to assess how different biochar application rates (0%, 1%, 2.5%, 5%, 10%, and 20% w/w), derived from mushroom residue through muffle furnace pyrolysis at 350°C for 2 h, affect the physicochemical attributes of phosphogypsum and subsequent switchgrass growth. Our findings revealed that adding biochar to phosphogypsum significantly alleviated acidity and enhanced moisture, organic matter, total nitrogen, total phosphorus, total potassium, available phosphorus, and available potassium contents. Notably, the 10% biochar treatment had the most positive impacts on germination rates, while the 5% treatment had the greatest improvements in shoot length, tiller number, and total weight compared to the control. Structural equation modeling illustrated that biochar indirectly contributed to switchgrass health by altering the physicochemical properties of phosphogypsum, with pH as the pivotal regulator. Our study demonstrated the potential of mushroom residue biochar as an effective amendment for acidic substrates/matrix (e.g., soil), offering a promising strategy to improve physicochemical conditions and stimulate plant growth.

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Biochar application under low phosphorus input promotes soil organic phosphorus mineralization by shifting bacterial phoD gene community composition

Cited by 85 publications

References 44 publications

Biochar application ameliorated the nutrient content and fungal community structure in different yellow soil depths in the karst area of Southwest China

Biochar application ameliorated the nutrient content and fungal community structure in different yellow soil depths in the karst area of Southwest China

Stronger effect of maize rhizosphere than phosphorus fertilization on soil phosphatase activity and associated bacterial communities in acidic soil: distinct influences on phoC- and phoD-harboring bacteria

Enhancing Switchgrass Growth With Biochar Derived From Mushroom Residue: A Study on Regulating Physicochemical Properties of Acidic Phosphogypsum

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